Files
msd-core/docs/AGENTS.md
Tom Boucher 14679b866b enhance(#2856): add default-off live-DOM UAT capability (#3716)
* test(#2856): add failing-first suite for the live-dom-uat capability

Binds the approved triage shape before any of it exists:

- containment — the execute:wave:post hook must not render unless
  workflow.live_dom_uat is true AND the capability resolves active
  (fail-closed on a missing state entry, and on a non-boolean value)
- criterion 4 — agents/gsd-executor.md carries no browser MCP family;
  asserted as an absence, which is the only way it is observable
- Hyrum guard — the pre-existing mcp__playwright__* branch must stay
  outside the key-gated block, or upgrading silently removes working
  automated UI verification for every current Playwright-MCP user
- parity — the browser glob list now lives in two surfaces (agent
  frontmatter + workflow detection block); the assertion fails if
  either gains or loses a family without the other

Red by construction: the capability, agent and workflow block do not
exist yet. Verified on the remote runner.

Refs #2856

* enhance(#2856): add default-off live-DOM UAT capability

A phase whose acceptance criteria needed a live DOM could not be
finished by the agent that executed it: gsd-executor carries no browser
tools, so it correctly returned checkpoint:human-action even though the
work was not human-only, just tool-less. Every such phase degraded to
"executed, then finished by hand in the orchestrator", and autonomous:
false could not distinguish "a human must judge this" from "the executor
lacks the tool".

Implements the shape approved at triage, not the one reported. The
executor's tools: line is NOT widened, in any configuration: for a
first-party agent the static list is the only control that exists
(ADR-1244 D2, ADR-857 D4, no per-dispatch override). Instead one
default-off capability owns the key, the agent, and the step:

- capabilities/live-dom-uat/ — activationKey workflow.live_dom_uat
  (boolean, default false), one additive step at execute:wave:post
  (onError: skip, gates: []), so it can never halt a wave
- agents/gsd-dom-verifier.md — the only GSD agent carrying browser MCP
  globs, in its own tools: line, with no Bash
- verify-work automated_ui_verification — a gsd:live-dom-families block
  naming both new families AND the key; presence alone never activates

Two independent fail-closed gates: isCapabilityActive renders a hook
only on state.active === true, plus the step's own `when`.

The pre-existing mcp__playwright__* branch keeps the gating it already
had and stays outside the new block. Pulling it behind a default-off key
would have silently removed working automated UI verification from every
current Playwright-MCP user on upgrade.

Also closes a host gap this surfaced: execute:wave:post dispatched only
contribution + gate, so ANY registered step was declared and silently
never run — exactly the single-kind hand-roll loop-hook-dispatch.md
names. Step 5.75 now dispatches every kind == "step".

The browser-profile lock is tolerated, not coordinated: --isolated is a
flag on the operator's own MCP-server registration that GSD neither
launches nor parameterizes, so the verifier reports could_not_look /
profile_locked, names the flag, and stops. DOM-VERIFY.md keeps
could_not_look and nothing_to_report distinct behind a closed reason
enum — collapsing them is the ambiguous-run-notes defect reported.

Verified on the remote runner.

Closes #2856

* fix(#2856): apply review findings from the orthogonal passes

Correctness pass (blocker):
- delete detectionBlockIsCrlfSafe. It was pass-always: it read the file,
  replaced LF with CRLF, then indexOf'd marker strings that contain no
  newline, so the replacement could not change the result and the
  assertion could never fail for the reason it stated. There is no real
  CRLF risk on this surface either — the gsd:live-dom-families block has
  no parser, only human and agent readers. Deleted rather than replaced,
  per the repo's pass-always-test rule.

Isolated security pass (two minors, both real):
- execute-phase.md step 5.75: this change is what first activates
  kind == "step" dispatch at execute:wave:post, which newly opens the
  ref.command shell path at that loop point. Our own step uses ref.agent
  and never touches it, but the door is now open, so the step-dispatch
  line carries the same in-context validate-before-shell warning the
  sibling gate-dispatch line directly below it already carries.
- gsd-dom-verifier: quoted page text in DOM-VERIFY.md is attacker
  influenced. Require it wrapped in inline code or a fence, kept short,
  and never left reading as a directive to the next reader.

Verified on the remote runner.

Refs #2856

* fix(#2856): settle the new-agent roster ripple

Checkpoint 2 returned 28 failures, none in the new suite — all of them
the guards that exist to make adding an agent a deliberate act. Each is
a real boundary that had to move:

- docs/AGENTS.md: Tools row must copy the frontmatter verbatim (#2526),
  so the browser globs lose their backticks; primary-agent counts 21->22,
  roster 33/34->34/35, Verifiers category 1->2
- docs/INVENTORY.md: roster completeness requires every agents/gsd-*.md
  to be classified exactly once
- gsd-dom-verifier: add the anti-heredoc instruction and the commented
  hooks: frontmatter pattern both agent gates require
- gsd-core/bin/shared/model-catalog.json: every shipped agent needs a
  profile entry (#3229)
- copilot-install / kilo-upgrades / qwen-upgrades: expected agent list
  and the 34->35 roster boundary
- execute-wave-post-gate-pipeline-e2e: execute:wave:post legitimately
  carries one step now. Asserted as an exact shape — one step, capId
  live-dom-uat, ref.agent gsd-dom-verifier, onError skip — so it stays a
  real guard against accidental change rather than being relaxed

Two findings worth naming:

mcp-tool-inheritance (#2526) rejected the agent for documenting
mcp__playwright__* while its tools: line withholds it — a dead
instruction that invites the agent to claim a path it cannot take. The
prose now names the Playwright MCP family without the dispatchable
token, in both the agent and the capability fragment.

runtime-launcher-parity rejected the new gsd_run call: each fenced block
is its own shell, so a workflow step file invoking gsd_run needs its own
canonical preamble. Propagated with scripts/sync-runtime-launcher.cjs.
That script also normalizes explore.md, which is unrelated pre-existing
drift the parity check tolerates, so it is reverted to keep this diff
scoped.

The emitted-drift ack supersedes the spent #3370 entry for
execute-phase.md — it is merged into next, so its ripple is absorbed at
the base and it can no longer clear anything. That is the same supersede
the #3370 entry itself performed on the spent #3324 fragment. Its
unrelated execute-plan.md entry is untouched.

Verified on the remote runner.

Refs #2856

* fix(#2856): drop the stale emitted-drift ack entry

The automated-ui-verification.md entry was written speculatively rather
than from a reported growth, and the check names that precisely: an ack
"written or reworded in THIS diff, but nothing here needed it, so it
explains nothing".

The growth tier keys on the bare filename as it appears under
gsd-core/workflows/ or agents/. automated-ui-verification.md is nested
under verify-work/steps/, so it was never in the tracked set — only
execute-phase.md was ever reported, both before and after the launcher
preamble landed.

Only ack what the check actually reports.

Verified on the remote runner.

Refs #2856

* chore(#2856): backfill changeset pr number

pr:0 -> 3716. The placeholder fails both changeset-lint
(fail_invalid_fragment) and docs-lint (fail_malformed_fragment) by
design and can only be resolved once the PR number exists. Both now
report ok against GITHUB_BASE_REF=next.

Refs #2856

---------

Co-authored-by: sim <sim@local>
2026-08-20 15:07:21 -04:00

42 KiB
Raw Blame History

GSD Agent Reference

Full role cards for 22 primary agents plus concise stubs for 12 advanced/specialized agents (34 shipped agents total). The agents/ directory and docs/INVENTORY.md are the authoritative roster; see Architecture for context.


Overview

GSD uses a multi-agent architecture where thin orchestrators (workflow files) spawn specialized agents with fresh context windows. Each agent has a focused role, limited tool access, and produces specific artifacts.

Required reading (#3423): the canonical spawn-block tag is <required_reading> on BOTH sides — orchestrators emit it, and gating agents enforce it ("you MUST use the Read tool to load every file listed there before performing any other actions"). The legacy <files_to_read> emit-tag is retired and banned repo-wide by tests/agent-required-reading-consistency.test.cjs, because a mismatched pair silently disarms the enforcement clause.

Agent Categories

The table below covers the 22 primary agents detailed in this section. Thirteen additional shipped agents (pattern-mapper, debug-session-manager, code-reviewer, code-fixer, ai-researcher, domain-researcher, eval-planner, eval-auditor, framework-selector, intel-updater, doc-classifier, doc-synthesizer, mempalace-curator) have concise stubs in the Advanced and Specialized Agents section below. For the authoritative 35-agent roster, see docs/INVENTORY.md and the agents/ directory.

Category Count Agents
Researchers 3 project-researcher, phase-researcher, ui-researcher
Analyzers 2 assumptions-analyzer, advisor-researcher
Synthesizers 1 research-synthesizer
Planners 1 planner
Roadmappers 1 roadmapper
Executors 1 executor
Checkers 3 plan-checker, integration-checker, ui-checker
Verifiers 2 verifier, dom-verifier
Auditors 3 nyquist-auditor, ui-auditor, security-auditor
Mappers 1 codebase-mapper
Debuggers 1 debugger
Doc Writers 2 doc-writer, doc-verifier
Profilers 1 user-profiler

Agent Details

gsd-project-researcher

Role: Researches domain ecosystem before roadmap creation.

Property Value
Spawned by /gsd-new-project, /gsd-new-milestone
Parallelism 4 instances (stack, features, architecture, pitfalls)
Tools Read, Write, Bash, Grep, Glob, Skill, WebSearch, WebFetch, mcp__context7__, mcp__plugin_context7_context7__, mcp__firecrawl__, mcp__exa__, mcp__tavily__, mcp__ref__, mcp__jina__, mcp__perplexity__
Model (balanced) Sonnet
Color Cyan
Produces .planning/research/STACK.md, FEATURES.md, ARCHITECTURE.md, PITFALLS.md

Capabilities:

  • Web search for current ecosystem information
  • Context7 MCP integration for library documentation
  • Writes research documents directly to disk (reduces orchestrator context load)

gsd-phase-researcher

Role: Researches how to implement a specific phase before planning.

Property Value
Spawned by /gsd-plan-phase
Parallelism 4 instances (same focus areas as project researcher)
Tools Read, Write, Edit, Bash, Grep, Glob, Skill, WebSearch, WebFetch, mcp__context7__, mcp__plugin_context7_context7__, mcp__firecrawl__, mcp__exa__, mcp__tavily__, mcp__ref__, mcp__jina__, mcp__perplexity__
Model (balanced) Sonnet
Color Cyan
Produces {phase}-RESEARCH.md

Capabilities:

  • Reads CONTEXT.md to focus research on user's decisions
  • Investigates implementation patterns for the specific phase domain
  • Detects test infrastructure for Nyquist validation mapping
  • Tags in-repo discrete values (enums, schema unions, error codes, status constants, paths) [VERIFIED] only after reading the source-of-truth file that run, citing path and line range, and quoting the values verbatim
  • Refuses [VERIFIED] for a compatibility claim resting on missing metadata (no python_requires, no engines field, no per-version classifier, no changelog entry, no matching support-matrix row) — an absence constrains no version, and an enumerated allow-list that stops short of the target is still an absence, so only a positive falsification attempt with its failing output pasted earns the tag; anything less stays [ASSUMED]

gsd-ui-researcher

Role: Produces UI design contracts for frontend phases.

Property Value
Spawned by /gsd-ui-phase
Parallelism Single instance
Tools Read, Write, Edit, Bash, Grep, Glob, Skill, WebSearch, WebFetch, mcp__context7__, mcp__plugin_context7_context7__, mcp__firecrawl__, mcp__exa__, mcp__tavily__, mcp__ref__, mcp__jina__*
Model (balanced) Sonnet
Color Purple
Produces {phase}-UI-SPEC.md

Capabilities:

  • Detects design system state (shadcn components.json, Tailwind config, existing tokens)
  • Offers shadcn initialization for React/Next.js/Vite projects
  • Asks only unanswered design contract questions
  • Enforces registry safety gate for third-party components

gsd-assumptions-analyzer

Role: Deeply analyzes codebase for a phase and returns structured assumptions with evidence, confidence levels, and consequences if wrong.

Property Value
Spawned by discuss-phase-assumptions workflow (when workflow.discuss_mode = 'assumptions')
Parallelism Single instance
Tools Read, Bash, Grep, Glob, Skill
Model (balanced) Sonnet
Color Cyan
Produces Structured assumptions with decision statements, evidence file paths, confidence levels

Key behaviors:

  • Reads ROADMAP.md phase description and prior CONTEXT.md files
  • Searches codebase for files related to the phase (components, patterns, similar features)
  • Reads 5-15 most relevant source files to form evidence-based assumptions
  • Classifies confidence: Confident (clear from code), Likely (reasonable inference), Unclear (could go multiple ways)
  • Flags topics that need external research (library compatibility, ecosystem best practices)
  • Output calibrated by tier: full_maturity (3-5 areas), standard (3-4), minimal_decisive (2-3)

gsd-advisor-researcher

Role: Researches a single gray area decision during discuss-phase advisor mode and returns a structured comparison table.

Property Value
Spawned by discuss-phase workflow (when ADVISOR_MODE = true)
Parallelism Multiple instances (one per gray area)
Tools Read, Bash, Grep, Glob, Skill, WebSearch, WebFetch, mcp__context7__, mcp__plugin_context7_context7__
Model (balanced) Sonnet
Color Cyan
Produces 5-column comparison table (Option / Pros / Cons / Complexity / Recommendation) with rationale paragraph

Key behaviors:

  • Researches a single assigned gray area using Claude's knowledge, Context7, and web search
  • Produces genuinely viable options — no padding with filler alternatives
  • Complexity column uses impact surface + risk (never time estimates)
  • Recommendations are conditional ("Rec if X", "Rec if Y") — never single-winner ranking
  • Output calibrated by tier: full_maturity (3-5 options with maturity signals), standard (2-4), minimal_decisive (2 options, decisive recommendation)

gsd-research-synthesizer

Role: Combines outputs from parallel researchers into a unified summary.

Property Value
Spawned by /gsd-new-project (after 4 researchers complete)
Parallelism Single instance (sequential after researchers)
Tools Read, Write, Bash, Skill
Model (balanced) Sonnet
Color Purple
Produces .planning/research/SUMMARY.md

gsd-planner

Role: Creates executable phase plans with task breakdown, dependency analysis, and goal-backward verification.

Property Value
Spawned by /gsd-plan-phase, /gsd-quick
Parallelism Single instance
Tools Read, Write, Edit, Bash, Glob, Grep, Skill, WebFetch, mcp__context7__, mcp__plugin_context7_context7__
Model (balanced) Opus
Color Green
Produces {phase}-{N}-PLAN.md files

Key behaviors:

  • Reads PROJECT.md, REQUIREMENTS.md, CONTEXT.md, RESEARCH.md
  • Creates 2-3 atomic task plans sized for single context windows
  • Uses XML structure with <task> elements
  • Includes read_first and acceptance_criteria sections
  • Groups plans into dependency waves
  • Performs reachability check to validate plan steps reference accessible files and APIs (v1.32)
  • Enforces a comment-text discipline HARD GATE at plan-write time (verify.plan-structure): a literal that an acceptance criterion negative-greps for (grep -c 'LIT' file == 0) must not appear verbatim in an <action> body; violations fail plan creation. Use <!-- planner-discipline-allow: LIT --> to allowlist a legitimate occurrence. (#429)

gsd-roadmapper

Role: Creates project roadmaps with phase breakdown and requirement mapping.

Property Value
Spawned by /gsd-new-project
Parallelism Single instance
Tools Read, Write, Bash, Glob, Grep, Skill
Model (balanced) Sonnet
Color Purple
Produces ROADMAP.md

Key behaviors:

  • Maps requirements to phases (traceability)
  • Derives success criteria from requirements
  • Respects granularity setting for phase count
  • Validates coverage (every v1 requirement mapped to a phase)

gsd-executor

Role: Executes GSD plans with atomic commits, deviation handling, and checkpoint protocols.

Property Value
Spawned by /gsd-execute-phase, /gsd-quick
Parallelism Multiple (parallel within waves, sequential across waves)
Tools Read, Write, Edit, Bash, Grep, Glob, Skill, mcp__context7__, mcp__plugin_context7_context7__
Model (balanced) Sonnet
Color Yellow
Produces Code changes, git commits, {phase}-{N}-SUMMARY.md

Key behaviors:

  • Fresh 200K context window per plan
  • Follows XML task instructions precisely
  • Atomic git commit per completed task
  • Handles task types: auto, tracer, checkpoint (human-verify, decision, human-action)
  • Tracer feedback gate: after a tracer slice, verifies it end-to-end before expansion tasks — autonomous runs halt on failure; interactive runs emit a human-verify checkpoint
  • Reports deviations from plan in SUMMARY.md
  • Invokes node repair on verification failure

gsd-plan-checker

Role: Verifies plans will achieve phase goals before execution.

Property Value
Spawned by /gsd-plan-phase (verification loop, max 3 iterations)
Parallelism Single instance (iterative)
Tools Read, Bash, Glob, Grep, Skill
Disallowed Tools Write, Edit, MultiEdit
Model (balanced) Sonnet
Color Green
Produces PASS/FAIL verdict with specific feedback

Verification Dimensions — labels match the agent's own ## Dimension <N> headings:

# Dimension
1 Requirement coverage
2 Task completeness
3 Dependency correctness
3b Undeclared / temporal coupling — advisory; flags same-wave plan pairs coupled through shared mutable state or execution order with no depends_on between them
4 Key links planned
5 Scope sanity
6 Verification derivation
7 Context compliance (when CONTEXT.md exists)
7b Scope reduction detection
7c Architectural tier compliance (when RESEARCH.md defines a responsibility map)
8 Nyquist compliance (when enabled)
9 Cross-plan data contracts
10 CLAUDE.md compliance
11 Research resolution
12 Pattern compliance

Two further dimensions carry no number: Verify Command Format Sanity and Numeric/Factual Claim Authority.


gsd-integration-checker

Role: Verifies cross-phase integration and end-to-end flows.

Property Value
Spawned by /gsd-audit-milestone
Parallelism Single instance
Tools Read, Bash, Grep, Glob, Skill
Disallowed Tools Write, Edit, MultiEdit
Model (balanced) Sonnet
Color Blue
Produces Integration verification report

gsd-ui-checker

Role: Validates UI-SPEC.md design contracts against quality dimensions.

Property Value
Spawned by /gsd-ui-phase (validation loop, max 2 iterations)
Parallelism Single instance
Tools Read, Bash, Glob, Grep, Skill
Disallowed Tools Write, Edit, MultiEdit
Model (balanced) Sonnet
Color Cyan
Produces BLOCK/FLAG/PASS verdict

Key behaviors:

  • Adversarial stance / "The Auditor" (#1578): applies explicit BLOCK/FLAG/PASS tiers and an anti-capitulation rule that resists author-framing pressure while still allowing self-correction when the prior dimension application was mistaken. Persona effects are strongest on Sonnet-class reasoning and unvalidated on budget/Haiku-class routing; the criteria and evidence remain authoritative.

gsd-verifier

Role: Verifies phase goal achievement through goal-backward analysis.

Property Value
Spawned by /gsd-execute-phase (after all executors complete)
Parallelism Single instance
Tools Read, Write, Bash, Grep, Glob, Skill
Disallowed Tools Edit, MultiEdit
Model (balanced) Sonnet
Color Green
Produces {phase}-VERIFICATION.md

Key behaviors:

  • Checks codebase against phase goals, not just task completion

  • PASS/FAIL with specific evidence

  • Logs issues for /gsd-verify-work to address

  • Milestone scope filtering: gaps addressed in later phases are marked as "deferred", not reported as failures (v1.32)

  • Test quality audit (v1.32): verifies that tests prove what they claim by checking for disabled/skipped tests on requirements, circular test patterns (system generating its own expected values), assertion strength (existence vs. value vs. behavioral), and expected value provenance. Blockers from test quality audit override an otherwise passing verification

  • Runs the full workspace test suite at most once per verification — proves a test exists by enumeration and that it passes via a single named test, never re-running the whole suite per must-have.

  • Behavior-dependent calibration (#966): a must-have that asserts a state transition or a cancellation/cleanup/ordering invariant is marked ⚠️ PRESENT_BEHAVIOR_UNVERIFIED (not VERIFIED) when no test exercises it — excluded from the verified_truths score, counted in the behavior_unverified frontmatter field, and routed to human verification, so a clean N/N certifies behavioral evidence rather than mere symbol presence.

  • Coincidental-reliance advisory (#1955): a truth that reaches ✓ VERIFIED is additionally asked why it holds. When the recorded evidence shows the truth holding for an incidental reason — undeclared-precondition, incidental-ordering, or fixture-only — the verdict is qualified as ✓ VERIFIED (coincidental-reliance) and the truth is listed in the coincidental_reliance_items frontmatter field with what to harden. This is advisory: the base ✓ VERIFIED token is unchanged, the truth still counts toward verified_truths, the overall status is unaffected, and no human-verification item is emitted — a passing phase still passes. It classifies evidence the verifier already gathered rather than asking it to rate its own confidence — but it is honestly an endogenous check, and gsd-core/references/honest-verifier.md records that endogenous gates are measurably weaker than the exogenous backstop tag it routes on. Advisory status is the consequence, not a coincidence: a miss costs exactly today's behaviour (a plain ✓ VERIFIED) and a false positive costs one line of prose, never a failed phase, so a weaker mechanism is affordable here in a way it would not be on a pass/fail axis. Its precision is unmeasured. It complements the two existing axes: PRESENT_BEHAVIOR_UNVERIFIED is no behavioral evidence, insufficient_spec is an under-specified truth, and this is evidence that exists and passes for the wrong reason.

    The advisory is carried by two surfaces. agents/gsd-verifier.md (Step 3, sub-step 5c) holds the detection rule, and the verifier's eagerly-imported gsd-core/references/verifier-phase-gates.md points at the canonical report template @~/.claude/gsd-core/templates/verification-report.md, whose ## Guidelines carry the same instruction. (The former third surface, the retired verify-phase workflow, was deleted as an orphan in #1892 — every verification path is subagent-shaped today.)


gsd-nyquist-auditor

Role: Fills Nyquist validation gaps by generating tests.

Property Value
Spawned by /gsd-validate-phase
Parallelism Single instance
Tools Read, Write, Edit, Bash, Glob, Grep, Skill
Model (balanced) Sonnet
Color Purple
Produces Test files, updated VALIDATION.md

Key behaviors:

  • Never modifies implementation code — only test files
  • Max 3 attempts per gap
  • Flags implementation bugs as escalations for user

gsd-ui-auditor

Role: Retroactive 6-pillar visual audit of implemented frontend code.

Property Value
Spawned by /gsd-ui-review
Parallelism Single instance
Tools Read, Write, Bash, Grep, Glob, Skill
Disallowed Tools Edit, MultiEdit
Model (balanced) Sonnet
Color Pink
Produces {phase}-UI-REVIEW.md with scores

6 Audit Pillars (scored 1-4):

  1. Copywriting
  2. Visuals
  3. Color
  4. Typography
  5. Spacing
  6. Experience Design

gsd-dom-verifier

Role: Observes a live DOM and reports which of a wave's stated UI acceptance criteria hold. Additive — never blocks.

Property Value
Spawned by live-dom-uat capability step at execute:wave:post
Parallelism One per wave
Tools Read, Write, Glob, Grep, mcp__chrome-devtools__, mcp__claude-in-chrome__
Disallowed Tools Edit, Bash, the Playwright MCP family
Model (balanced) Sonnet
Color Cyan
Produces {phase}-DOM-VERIFY.md
Gated by workflow.live_dom_uat (default false)

This is the only GSD agent carrying browser MCP tools. gsd-executor is deliberately not widened — for a first-party agent the static tools: list is the only control that exists (ADR-1244 D2, ADR-857 D4). It carries no Bash: it does not start dev servers or shell out.

Outcome codes (nothing_to_report and could_not_look are never conflated):

outcome reason Meaning
verified ok Criteria existed and were observed
nothing_to_report no_criteria The wave stated no UI acceptance criteria
could_not_look no_browser_mcp No browser MCP answered
could_not_look profile_locked Another instance holds the browser profile
could_not_look target_unreachable Nothing serving the target

Reference: Enable live-DOM verification · Explanation


gsd-codebase-mapper

Role: Explores codebase and writes structured analysis documents.

Property Value
Spawned by /gsd-map-codebase, post-execute drift gate in /gsd-execute-phase
Parallelism 4 instances (tech, architecture, quality, concerns)
Tools Read, Bash, Grep, Glob, Write, Skill
Model (balanced) Haiku
Color Cyan
Produces .planning/codebase/*.md (7 documents, with last_mapped_commit frontmatter)

Key behaviors:

  • Read-only exploration + structured output
  • Writes documents directly to disk
  • No reasoning required — pattern extraction from file contents

--paths <p1,p2,...> scope hint (#2003): Accepts an optional --paths directive in its prompt. When present, the mapper restricts Glob/Grep/Bash exploration to the listed repo-relative path prefixes — this is the incremental-remap path used by the post-execute codebase-drift gate. Path values that contain .., start with /, or include shell metacharacters are rejected. Without the hint, the mapper runs its default whole-repo scan.


gsd-debugger

Role: Investigates bugs using scientific method with persistent state.

Property Value
Spawned by /gsd-debug, /gsd-verify-work (for failures)
Parallelism Single instance (interactive)
Tools Read, Write, Edit, Bash, Grep, Glob, Skill, WebSearch
Model (balanced) Sonnet
Color Orange
Produces .planning/debug/*.md, knowledge-base updates

Debug Session Lifecycle: gathering → investigating → fixing → verifying → awaiting_human_verify → resolved

Key behaviors:

  • Tracks hypotheses, evidence, and eliminated theories
  • State persists across context resets
  • Requires human verification before marking resolved
  • Runs a multi-signal fix-acceptance guardrail (mutation check, no-op/deletion detector, adjacent tests, revert-and-reconfirm) before accepting a fix; degrades gracefully when Stryker or a test suite is absent
  • Ranks suspect code by Ochiai suspiciousness from test pass/fail coverage (spectrum-based fault localization) before forming hypotheses; skips cleanly when no coverage exists
  • Branches root-cause analysis across ≥2 Ishikawa categories and applies an AND-gate check before committing root_cause (guards against 5-Whys single-cause bias); root_cause may hold a set when the AND-gate fires
  • Classifies each failure as Bohrbug / Heisenbug-Mandelbug / Concurrency at Phase 1.75 and routes the investigation technique accordingly (routes Bohrbugs to SBFL+bisect, Heisenbugs to record-replay/stability with SBFL skipped, Concurrency to the atomicity/order/deadlock checklist)
  • Hardens regression tests via PBT shrinking (minimized counterexample as the seed), explicit oracle classification (specified/derived/metamorphic/implicit), and boundary neighbors around the fixed equivalence class
  • Emits a blameless-postmortem Prevention block at resolution (branching 5-Whys, why-wasn't-this-caught, a concrete recurrence guard) and records why_not_caught + recurrence_guard in the knowledge base so the same bug class is prevented, not just fixed
  • Recalls prior resolved sessions semantically via MemPalace at Phase 0 (top-k meaning-similar), catching same-root-cause/different-wording cases keyword overlap misses; falls back to keyword matching when MemPalace is absent
  • Appends to persistent knowledge base on resolution
  • Consults knowledge base on new sessions

gsd-user-profiler

Role: Analyzes session messages across 8 behavioral dimensions to produce a scored developer profile.

Property Value
Spawned by /gsd-profile-user
Parallelism Single instance
Tools Read
Model (balanced) Sonnet
Color Purple
Produces USER-PROFILE.md, CLAUDE.md profile section

Behavioral Dimensions: Communication style, decision patterns, debugging approach, UX preferences, vendor choices, frustration triggers, learning style, explanation depth.

Key behaviors:

  • Read-only agent — analyzes extracted session data, does not modify files
  • Produces scored dimensions with confidence levels and evidence citations
  • Questionnaire fallback when session history is unavailable

gsd-doc-writer

Role: Writes and updates project documentation. Spawned with a doc_assignment block specifying doc type, mode, and project context.

Property Value
Spawned by /gsd-docs-update
Parallelism Multiple instances (one per doc type)
Tools Read, Bash, Grep, Glob, Write, Edit, Skill
Model (balanced) Sonnet
Color Purple
Produces Project documentation files (README, architecture, API docs, etc.)

Key behaviors:

  • Supports modes: create, update, supplement, fix
  • Handles doc types: readme, architecture, getting_started, development, testing, api, configuration, deployment, contributing, custom
  • Monorepo-aware: can generate per-package READMEs
  • Fix mode accepts failure objects from gsd-doc-verifier for targeted corrections
  • Writes directly to disk — does not return content to orchestrator

gsd-doc-verifier

Role: Verifies factual claims in generated documentation against the live codebase.

Property Value
Spawned by /gsd-docs-update (after doc-writer completes)
Parallelism Multiple instances (one per doc file)
Tools Read, Write, Bash, Grep, Glob
Disallowed Tools Edit, MultiEdit
Model (balanced) Sonnet
Color Orange
Produces Structured JSON verification results per doc

Key behaviors:

  • Extracts checkable claims (file paths, function names, CLI commands, config keys)
  • Verifies each claim against filesystem using tools only — no assumptions
  • Writes structured JSON result file for orchestrator to process
  • Failed claims feed back to doc-writer in fix mode

gsd-security-auditor

Role: Verifies threat mitigations from PLAN.md threat model exist in implemented code.

Property Value
Spawned by /gsd-secure-phase
Parallelism Single instance
Tools Read, Bash, Glob, Grep, Skill
Model (balanced) Sonnet
Color Red
Produces Structured verdict (SECURED / OPEN_THREATS / ESCALATE) — orchestrator writes {phase}-SECURITY.md (#2119)

Key behaviors:

  • Verifies each threat by its declared disposition (mitigate / accept / transfer)
  • Does NOT scan blindly for new vulnerabilities — verifies declared mitigations only
  • Implementation files are read-only — never patches implementation code
  • Unmitigated threats reported as OPEN_THREATS or ESCALATE
  • Supports ASVS levels 1/2/3 for verification depth

Advanced and Specialized Agents

Twelve additional agents ship under agents/gsd-*.md and are used by specialty workflows (/gsd-ai-integration-phase, /gsd-eval-review, /gsd-code-review, /gsd-code-review --fix, /gsd-debug, /gsd-map-codebase --query, /gsd-ingest-docs) and by the planner pipeline. Each carries full frontmatter in its agent file; the stubs below are concise by design. The authoritative roster (with spawner and primary-doc status per agent) lives in docs/INVENTORY.md.

gsd-pattern-mapper

Role: Read-only codebase analysis that maps files-to-be-created or modified to their closest existing analogs, producing PATTERNS.md for the planner to consume.

Property Value
Spawned by /gsd-plan-phase (between research and planning)
Parallelism Single instance
Tools Read, Bash, Glob, Grep, Write
Model (balanced) Sonnet
Color Purple
Produces PATTERNS.md in the phase directory

Key behaviors:

  • Extracts file list from CONTEXT.md and RESEARCH.md; classifies each by role (controller, component, service, model, middleware, utility, config, test) and data flow (CRUD, streaming, file I/O, event-driven, request-response)
  • Searches for the closest existing analog per file and extracts concrete code excerpts (imports, auth patterns, core pattern, error handling)
  • Strictly read-only against source; only writes PATTERNS.md

gsd-debug-session-manager

Role: Runs the full /gsd-debug checkpoint-and-continuation loop in an isolated context so the orchestrator's main context stays lean; spawns gsd-debugger agents, dispatches specialist skills, and handles user checkpoints via AskUserQuestion.

Property Value
Spawned by /gsd-debug
Parallelism Single instance (interactive, stateful)
Tools Read, Write, Edit, Bash, Grep, Glob, Agent, AskUserQuestion
Model (balanced) Sonnet
Color Orange
Produces Compact summary returned to main context; evolves the .planning/debug/{slug}.md session file

Key behaviors:

  • Reads the debug session file first; passes file paths (not inlined contents) to spawned agents to respect context budget
  • Treats all user-supplied AskUserQuestion content as data-only, wrapped in DATA_START/DATA_END markers
  • Coordinates TDD gates and reasoning checkpoints introduced in v1.36.0

gsd-code-reviewer

Role: Reviews source files for bugs, security vulnerabilities, and code-quality problems; produces a structured REVIEW.md with severity-classified findings.

Property Value
Spawned by /gsd-code-review
Parallelism Typically single instance per review scope
Tools Read, Write, Bash, Grep, Glob, Skill
Model (balanced) Sonnet
Color Orange
Produces REVIEW.md in the phase directory

Key behaviors:

  • Detects bugs (logic errors, null/undefined checks, off-by-one, type mismatches, unreachable code), security issues (injection, XSS, hardcoded secrets, insecure crypto), and quality issues
  • Honors CLAUDE.md project conventions and .claude/skills/ / .agents/skills/ rules when present
  • Read-only against implementation source — never modifies code under review

gsd-code-fixer

Role: Applies fixes to findings from REVIEW.md with intelligent (non-blind) patching and atomic per-fix commits; produces REVIEW-FIX.md.

Property Value
Spawned by /gsd-code-review --fix
Parallelism Single instance
Tools Read, Edit, Write, Bash, Grep, Glob, Skill
Model (balanced) Sonnet
Color Green
Produces REVIEW-FIX.md; one atomic git commit per applied fix

Key behaviors:

  • Treats REVIEW.md suggestions as guidance, not a patch to apply literally
  • Commits each fix atomically so review and rollback stay granular
  • Honors CLAUDE.md and project-skill rules during fixes

gsd-ai-researcher

Role: Researches a chosen AI/LLM framework's official documentation and distills it into implementation-ready guidance — framework quick reference, patterns, and pitfalls — for the Section 3–4b body of AI-SPEC.md.

Property Value
Spawned by /gsd-ai-integration-phase
Parallelism Single instance (sequential with domain-researcher / eval-planner)
Tools Read, Write, Edit, Bash, Grep, Glob, WebFetch, WebSearch, mcp__context7__, mcp__plugin_context7_context7__
Model (balanced) Sonnet
Color Green
Produces Sections 3–4b of AI-SPEC.md (framework quick reference + implementation guidance)

Key behaviors:

  • Uses Context7 MCP when available; falls back to the ctx7 CLI via Bash when MCP tools are stripped from the agent
  • Anchors guidance to the specific use case, not generic framework overviews

gsd-domain-researcher

Role: Surfaces the business-domain and real-world evaluation context for an AI system — expert rubric ingredients, failure modes, regulatory context — before the eval-planner turns it into measurable rubrics. Writes Section 1b of AI-SPEC.md.

Property Value
Spawned by /gsd-ai-integration-phase
Parallelism Single instance
Tools Read, Write, Edit, Bash, Grep, Glob, WebSearch, WebFetch, mcp__context7__, mcp__plugin_context7_context7__
Model (balanced) Sonnet
Color Purple
Produces Section 1b of AI-SPEC.md

Key behaviors:

  • Researches the domain, not the technical framework — its output feeds the eval-planner downstream
  • Produces rubric ingredients that downstream evaluators can turn into measurable criteria

gsd-eval-planner

Role: Designs the structured evaluation strategy for an AI phase — failure modes, eval dimensions with rubrics, tooling, reference dataset, guardrails, production monitoring. Writes Sections 5–7 of AI-SPEC.md.

Property Value
Spawned by /gsd-ai-integration-phase
Parallelism Single instance (sequential after domain-researcher)
Tools Read, Write, Edit, Bash, Grep, Glob, AskUserQuestion
Model (balanced) Sonnet
Color Orange
Produces Sections 5–7 of AI-SPEC.md (Evaluation Strategy, Guardrails, Production Monitoring)

Required reading: gsd-core/references/ai-evals.md (evaluation framework).

Key behaviors:

  • Turns domain-researcher rubric ingredients into measurable, tooled evaluation criteria
  • Does not re-derive domain context — reads Section 1 and 1b of AI-SPEC.md as established input

gsd-eval-auditor

Role: Retroactive audit of an implemented AI phase's evaluation coverage against its planned AI-SPEC.md eval strategy. Scores each eval dimension COVERED / PARTIAL / MISSING and produces EVAL-REVIEW.md.

Property Value
Spawned by /gsd-eval-review
Parallelism Single instance
Tools Read, Write, Bash, Grep, Glob, Skill
Disallowed Tools Edit, MultiEdit
Model (balanced) Sonnet
Color Red
Produces EVAL-REVIEW.md with dimension scores, findings, and remediation guidance

Required reading: gsd-core/references/ai-evals.md.

Key behaviors:

  • Compares the implemented codebase against the planned eval strategy — never re-plans
  • Reads implementation files incrementally to respect context budget

gsd-framework-selector

Role: Interactive decision-matrix agent that runs a ≤6-question interview, scores candidate AI/LLM frameworks, and returns a ranked recommendation with rationale.

Property Value
Spawned by /gsd-ai-integration-phase
Parallelism Single instance (interactive)
Tools Read, Bash, Grep, Glob, WebSearch, AskUserQuestion
Model (balanced) Sonnet
Color Cyan
Produces Scored ranked recommendation (structured return to orchestrator)

Required reading: gsd-core/references/ai-frameworks.md (decision matrix).

Key behaviors:

  • Scans package.json, pyproject.toml, requirements*.txt for existing AI libraries before the interview to avoid recommending a rejected framework
  • Asks only what the codebase scan and CONTEXT.md have not already answered

gsd-intel-updater

Role: Reads project source and writes structured intel (JSON + Markdown) into .planning/intel/, building a queryable codebase knowledge base that other agents use instead of performing expensive fresh exploration.

Property Value
Spawned by /gsd-map-codebase --query (refresh / update flows)
Parallelism Single instance
Tools Read, Write, Bash, Glob, Grep
Model (balanced) Sonnet
Color Cyan
Produces .planning/intel/*.json (and companion Markdown) consumed by gsd-tools query intel

Key behaviors:

  • Writes current state only — no temporal language, every claim references an actual file path
  • Uses Glob / Read / Grep for cross-platform correctness; Bash is reserved for gsd-tools query intel CLI calls

gsd-doc-classifier

Role: Classifies a single planning document as ADR, PRD, SPEC, DOC, or UNKNOWN. Extracts title, scope summary, and cross-references. Writes a JSON classification file used by gsd-doc-synthesizer to build a consolidated context.

Property Value
Spawned by /gsd-ingest-docs (parallel fan-out over the doc corpus)
Parallelism One instance per input document
Tools Read, Write, Grep, Glob
Model (balanced) Haiku
Color Yellow
Produces One JSON classification file per input doc (type, title, scope, refs)

Key behaviors:

  • Single-doc scope — never synthesizes or resolves conflicts (that is the synthesizer's job)
  • Heuristic-first classification; returns UNKNOWN when the doc lacks type signals rather than guessing
  • Extraction discipline (#1578): few-shot input→output exemplars plus a terminal schema restatement; marks a field absent rather than fabricating a value when the doc lacks the signal.

gsd-doc-synthesizer

Role: Synthesizes classified planning docs into a single consolidated context. Applies precedence rules, detects cross-reference cycles, enforces LOCKED-vs-LOCKED hard-blocks, and writes INGEST-CONFLICTS.md with three buckets (auto-resolved, competing-variants, unresolved-blockers).

Property Value
Spawned by /gsd-ingest-docs (after classifier fan-in)
Parallelism Single instance
Tools Read, Write, Grep, Glob, Bash
Model (balanced) Sonnet
Color Orange
Produces Consolidated context for .planning/ plus INGEST-CONFLICTS.md report

Key behaviors:

  • Hard-blocks on LOCKED-vs-LOCKED ADR contradictions instead of silently picking a winner
  • Follows the references/doc-conflict-engine.md contract so /gsd-import and /gsd-ingest-docs produce consistent conflict reports
  • Extraction discipline (#1578): few-shot exemplars plus a terminal schema restatement and a mark-absent (no-fabrication) rule for missing fields.

gsd-mempalace-curator

Role: Ship-time memory curation — writes per-agent diary entries, proposes and creates cross-project tunnels, runs wing-scoped sync pruning, and mirrors extract-learnings output into MemPalace's temporal knowledge graph with provenance.

Property Value
Spawned by MemPalace capability at ship:post (when mempalace.enabled = true); diary/tunnels/KG-mirror are then refined by their own toggles
Parallelism Single instance
Tools Read, Bash, Grep, Glob
Model (balanced) Sonnet
Produces Diary entry in MemPalace, wing tunnel proposals, KG provenance records

Key behaviors:

  • Best-effort only — every operation is onError: skip; a MemPalace failure never halts the loop
  • Wing-scoped sync pruning (mempalace sync --wing <wing> --apply) — never runs a global prune
  • Cross-project tunnel proposals when mempalace.cross_project_tunnels = true
  • Mirrors extract-learnings decisions, lessons, patterns, and surprises into the KG with source_drawer_id provenance
  • Requires MemPalace MCP server or CLI to be reachable; writes a skip-notice stub when unavailable

Agent Tool Permissions Summary

Scope: this table covers the 22 primary agents only. The 13 advanced/specialized agents listed above carry their own tool surfaces in their agents/gsd-*.md frontmatter (summarized in the per-agent stubs above and in docs/INVENTORY.md).

Agent Read Write Edit Bash Grep Glob WebSearch WebFetch MCP
project-researcher ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
phase-researcher ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
ui-researcher ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓
assumptions-analyzer ✓ ✓ ✓ ✓
advisor-researcher ✓ ✓ ✓ ✓ ✓ ✓ ✓
research-synthesizer ✓ ✓ ✓
planner ✓ ✓ ✓ ✓ ✓ ✓ ✓
roadmapper ✓ ✓ ✓ ✓ ✓
executor ✓ ✓ ✓ ✓ ✓ ✓
plan-checker ✓ ✓ ✓ ✓
integration-checker ✓ ✓ ✓ ✓
ui-checker ✓ ✓ ✓ ✓
verifier ✓ ✓ ✓ ✓ ✓
nyquist-auditor ✓ ✓ ✓ ✓ ✓ ✓
ui-auditor ✓ ✓ ✓ ✓ ✓
codebase-mapper ✓ ✓ ✓ ✓ ✓
debugger ✓ ✓ ✓ ✓ ✓ ✓ ✓
user-profiler ✓
doc-writer ✓ ✓ ✓ ✓ ✓
doc-verifier ✓ ✓ ✓ ✓ ✓
security-auditor ✓ ✓ ✓ ✓ ✓ ✓

Principle of Least Privilege:

  • Checkers are read-only (no Write/Edit) — they evaluate, never modify
  • Researchers have web access — they need current ecosystem information
  • Executors have Edit — they modify code but not web access
  • Mappers have Write — they write analysis documents but not Edit (no code changes)

Completion Contracts (machine-enforced)

Every agent's return contract is declared in gsd-core/references/agent-contracts.md's Agent Registry table — (Agent, Completion Markers, Consumed by, Kind) — and enforced by npm run check:contract-drift (part of lint:ci).

The Kind column records how a caller actually detects the agent's completion:

Kind Detection mechanism
sentinel-match Exact-case string match against a declared marker (by a workflow, command, or another agent)
artifact+query The agent writes a file; the caller reads or queries that artifact
structured-return The agent returns parseable sections/JSON inline; the caller reads the return text

When you add an agent or change what it returns, update its registry row in the same change — a stale row is a build failure, not a documentation cleanup for later. Markers are extracted fence-aware (a heading inside a fenced block is the emitted template; the same words outside a fence are prose documentation), producer scope includes @-included gsd-core/references/** files, and consumers are matched exact-case (a case-insensitive hit is reported as a collision, never accepted). A marker that is deliberately emitted but matched by nothing carries an (unconsumed: <reason>) annotation — an auditable exemption that waives only the consumer requirement.

The same check also enforces the read-tag pairing: whenever a declared consumer emits <required_reading>, the producing agent's instructions must reference the gate (directly or via an @-included reference) — and the retired <files_to_read> vocabulary may not reappear under workflows/, commands/, or agents/.

For acting on a specific finding, see How to resolve a contract-drift finding.