11afca2968
* feat(#656): add Research Store module (content-addressed cache, TTL staleness) Content-addressed research cache behind a clock seam: researchKey (sha256, deterministic), putResearch/getResearch ({hit,stale}, never throws), ttlForSource (curated HIGH 30d / MED 7d / web LOW 1d), two-tier resolveStorePath (curated -> ~/.gsd/research-cache, web/synthesis -> project .planning/research/.cache). 28 behavioral + property tests; boundary coverage at ttl-1/ttl/ttl+1. Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * feat(#656): add Research Provider module (waterfall + confidence + plan) Single source of truth for the Balanced provider waterfall (docs Context7->Ref->Jina, web Exa+Tavily, fallback Perplexity/Brave, Firecrawl scrape-only). classifyConfidence stamps HIGH|MEDIUM|LOW by provider (never throws). providerAvailability maps config flags to usable providers. planResearch checks the Research Store (injected seam) and returns cache-hits + a per-question fetch plan, falling through the waterfall to the always-available websearch terminal. 22 behavioral + property tests. Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * feat(#656): add Package Legitimacy module (registry-API verdicts, slopcheck optional) Replaces the pip-install-or-degrade slopcheck prose gate with code: classifyPackage (pure, never throws) computes OK|SUS|SLOP from tunable thresholds (minAgeDays 30, minWeeklyDownloads 1000, requireRepo). checkPackages queries injectable npm/PyPI/crates registry adapters (real https with 5s timeout, degraded-not-thrown on failure); slopcheck is one optional adapter that can only escalate severity, never degrade to [ASSUMED]. 34 behavioral + property tests; boundary coverage on age and downloads (limit-1/limit/limit+1). Known follow-up: real npm adapter must add api.npmjs.org last-week downloads fetch (currently null -> unknown-downloads). Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * feat(#656): detect Tavily/Ref/Perplexity/Jina provider keys; complete npm downloads adapter config: add tavily_search/ref_search/perplexity/jina availability flags (env var or ~/.gsd/<x>_api_key), mirroring brave_search/exa_search/firecrawl, so the Research Provider waterfall can gate them. package-legitimacy: real npm adapter now fetches api.npmjs.org last-week downloads (bounded, degraded-not-thrown) so weeklyDownloads is populated. +12 config tests; 34 legitimacy tests unchanged. Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * feat(#656): expose Research seam via gsd-tools query (research-plan, research-store, package-legitimacy) Routes the L2-hybrid surface so agents reach it as CLI: 'query research-store get/put' (cache, HOME-sandboxable), 'query research-plan --input' (cache-hits + fetch plan from planResearch), 'query package-legitimacy check --ecosystem' (async registry verdicts). Commands skip .planning root resolution and appear in top-level usage. 5 behavioral runGsdTools tests; command-contract unchanged (335). Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * docs(#656): document Research module (CONTEXT predicates, ADR-0656, architecture, changeset) Adds GSD-RESEARCH.* + DEFECT.RESEARCH-PROVIDER-PROSE-DRIFT predicates to CONTEXT.md, ADR-0656 recording the L2-hybrid seam decision, a docs/ARCHITECTURE.md Research Module subsection, and an Added changeset fragment (pr:0, backfill on PR). Notes the #657 deferrals (agent collapse + install.js MCP mapping). Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * chore(#656): sync inventory for research modules Regenerate INVENTORY-MANIFEST.json and bump docs/INVENTORY.md CLI Modules count 82->85 with rows for research-store/research-provider/package-legitimacy (DEFECT.INVENTORY-DRIFT). Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * chore(#656): eslint-ignore generated research .cjs artifacts (ADR-457) research-store/research-provider/package-legitimacy .cjs are tsc-generated from src/*.cts, so they belong in the ESLint ignore block (lint the .cts source, not the emitted .cjs). Fixes tests/551-eslint-bin-lib-coverage. Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * chore(#656): backfill changeset pr number to #664 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * chore(#656): satisfy eslint lint-tests gate Fix 20 eslint errors in the new research files: use helpers.cleanup() instead of raw fs.rmSync() in tests (local/no-raw-rmsync-in-tests, Windows-EBUSY retry budget); drop redundant '| string' union members and unnecessary type assertions; deterministic object normalization in researchKey (no-base-to-string). Logic unchanged; 6180 tests still green. Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * fix(#656): harden package legitimacy per review (W1/W2/I3/I4) W1: httpsGet now reads statusCode; npm/PyPI/crates map 404 -> exists:false -> SLOP (registry-existence is the #1 slopsquatting defense; previously only npm caught it). Transport made injectable (_setHttpGet) for hermetic 404 tests. W2: suspicious-postinstall is now terminal SLOP independent of the optional slopcheck adapter, and the regex drops the bare https?:// arm (over-fired on esbuild/sharp/node-gyp) for shell-exec/download-exec signatures only. I3: checkPackages now threads version to registry.lookup and adapters verify that specific version exists. I4: moreServerVerdict -> moreSevereVerdict. +11 regression tests (all RED-first); 45 total green. Addresses review by @davesienkowski on #664. Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * fix(#656): research-store tier coherence + freshness + version TTL (W4/I1/I2/I4) I1: tier now derives from source (curated -> user ~/.gsd, else -> project .planning), not kind, so put-tier and get-tier can't diverge; kind is a key component only. W4: getResearch searches both tiers and returns the freshest (non-stale preferred), never letting a stale curated entry shadow a fresh web one; blank version caps TTL at 1 day (no 30d on version-blind keys). I2: atomic platformWriteSync instead of raw fs.writeFileSync on the shared global path. I4: dropped the dead ttlForSource arm. CLI get now searches both tiers. +5 RED-first regression tests; 38 green. Addresses review by @davesienkowski on #664. Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * fix(#656): expose classifyConfidence as a CLI route, killing dead code (W3) Adds 'gsd-tools query classify-confidence --provider X [--verified]' so research agents get the confidence tier FROM CODE (provider waterfall + verification lever) instead of asserting it in prose. classifyConfidence previously had no runtime caller. HIGH means 'trusted provider'; --verified raises web results to MEDIUM (verification semantics documented in ADR-0656). +4 behavioral tests. Addresses review by @davesienkowski on #664 (W3). Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * fix(#656): close Codex adversarial-review findings (path-traversal, version-age, malformed-cache) HIGH: research key must be 64-hex sha256 (isValidResearchKey) + resolved-path containment check in put/get + CLI validation -> blocks '../../x' arbitrary-file-write. HIGH: package legitimacy now derives publishedAt from the REQUESTED version (npm time[version], PyPI releases[version] upload_time, crates versions[].created_at) so a new malicious version of an old package can't inherit old age and evade 'too-new'. MEDIUM: getResearch validates entry shape (finite fetched_at + positive ttl + required fields) -> malformed cache entry is a miss, not fresh-forever. +regression tests (RED-first); 111 green. Codex adversarial review (required pre-PR gate). Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * fix(#656): close code-review correctness findings (1) package-legitimacy CLI now rejects unknown --flags instead of silently consuming the following package as a flag value; only --ecosystem takes a value. (2) crates recent_downloads (90-day) normalized to a weekly figure before the minWeeklyDownloads threshold (was ~13x too lenient). (3) research-plan --input validates parsed JSON is an object with an Array questions before destructuring -> clean usage error instead of an uncaught TypeError on null/bad input. (4) research-store put rejects a flag value that is itself a --flag (no more storing '--source' as content). (5) planResearch skips questions whose text is not a non-empty string instead of emitting question:undefined. +13 RED-first regression tests; 143 green. Code-review gate. Issue #656. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * refactor(#657): extract researcher documentation_lookup to shared @-reference 6 researcher agents carried a near-duplicate <documentation_lookup> block; consolidate into gsd-core/references/research-documentation-lookup.md (@-included). Unifies the ctx7 CLI fallback to the safer 'command -v ctx7' guard (drops silent 'npx --yes ctx7@latest' execution in 5 agents). Behavior-preserving dedup; inventory 63->64 references. Phase A of the agent collapse. Issue #657. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * refactor(#657): extract researcher philosophy + verification-protocol to shared @-references philosophy and the pitfalls+pre-submission-checklist common-core were near-duplicated in project/phase researchers; consolidate into gsd-core/references/research-{philosophy,verification-protocol}.md (@-included). phase-researcher keeps its 3 extra checklist items inline. Pre-submission domains checklist made agent-agnostic so project-researcher doesn't lose features/architecture coverage. Write-contract intentionally left inline (bug-214 tests assert it verbatim). Inventory 64->66 refs. Behavior-preserving. Phase A. Issue #657. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * feat(#657): wire gsd-phase-researcher to the Research seam (Phase B / S1) The phase researcher now CALLS the code seam instead of carrying inline mechanics: provider waterfall -> 'gsd-tools query research-plan' (+ research-store put to cache digests); confidence-tier prose -> 'gsd-tools query classify-confidence'; slopcheck pip-install protocol -> 'gsd-tools query package-legitimacy check'. This makes the Research module a real runtime consumer (validates the seam end-to-end, addresses reviewer S1) and removes the duplicated waterfall/confidence/slopcheck prose. RESEARCH.md output contract, commit step, structured returns, and Phase-A @-includes unchanged. package-legitimacy-gate.test.cjs rewritten prose-grep -> behavioral (asserts the seam invocation). Issue #657. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * feat(#657): wire gsd-project-researcher to the seam + add tavily/ref/jina MCP tools (Phase C.1) project-researcher now calls gsd-tools query research-plan / classify-confidence (+ research-store put) instead of the inline provider waterfall + confidence-tier prose (mirrors the phase-researcher rewire; no package-legitimacy — phase-only). Output contract (STACK/FEATURES/ARCHITECTURE/PITFALLS/SUMMARY.md + sections, no-commit, structured returns, Phase-A @-includes) unchanged. Adds mcp__tavily/ref/jina__* to the project/phase/ui researcher tools frontmatter (Balanced provider set) so install.js MCP mapping (C.2) has a consumer. Issue #657. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * test(#657): cover tavily/ref/jina MCP install handling + frontmatter parity guard (Phase C.2) Investigation: exa/firecrawl have no explicit per-runtime tool-mapping — every mcp__<server>__* except context7 rides the generic passthrough (Copilot lowercases; OpenCode/Cursor/Windsurf/Augment keep as-is; Gemini auto-discovers). tavily/ref/jina are handled identically, no install path broken. Added 12 copilot-install passthrough tests + a mcp-tool-inheritance parity guard (tavily co-declared with exa, jina with firecrawl, ref present across the 3 web researchers) so the MCP set can't drift. No io.github registry ids invented (none sourceable in-repo); documented as a follow-up. 488 tests green. Issue #657. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * feat(#657): profiles as source of truth for researcher agents + drift-guard (Phase C.3) scripts/research-profiles.cjs declares each of the 7 researcher agents' identity + contract (name, description, color, tools, required @-includes, required gsd-tools seam calls, output-contract markers). scripts/gen-research-agents.cjs --check validates every committed agent against its profile; --write regenerates ONLY the frontmatter from profiles (body untouched) and is a verified no-op against the current agents (zero diff = fidelity). tests/research-agent-profiles.test.cjs is the DEFECT.GENERATIVE-FIX drift guard. Design note: profiles govern the generatable/contract surface rather than destructively regenerating the disparate operational prose bodies (those were deduped via @-includes in Phase A). scripts/ is not inventoried (no inventory change). Issue #657. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * fix(#657): complete agent provider-dispatch + parity guard; align legitimacy field; validate profiles Adversarial-review findings: (HIGH) the seam-wired agents' Step-C dispatch only mapped 6 providers, so a planResearch result of jina/ref/perplexity/brave (reachable via the waterfall fallbacks) had no handling -> agent stall; completed both agents' dispatch to all 9 PROVIDER_WATERFALL ids + a catch-all, and added a parity test asserting agent dispatch stays in sync with research-provider PROVIDER_WATERFALL (DEFECT.GENERATIVE-FIX). (MEDIUM) phase-researcher package-legitimacy JSON example used 'package' but the module returns 'name' -> aligned. (LOW) gen-research-agents checkAgent now returns a clear failure for a malformed profile instead of throwing. +parity/validation tests (RED-first). Issue #657. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * fix(#656): make classifyConfidence verification-evidence-driven (W3) Confidence conflated provider authority with claim verification — context7/ref stamped HIGH purely by provider identity, and the only verification lever was a self-set --verified flag. Split into two axes: provider authority (static) + verification evidence (code-computed). HIGH now requires ground-truth corroboration (legitimacyVerdict OK), independent of provider; authority alone caps at MEDIUM; SLOP caps at LOW; the self-reported --verified is demoted to a MEDIUM-only web lever. HIGH = corroborated-against-authoritative-source, not a correctness guarantee. Adds --legitimacy-verdict to the classify-confidence CLI; updates CONTEXT.md predicate + ADR-0656 (tier set unchanged, ADR-consistent). Addresses davesienkowski's W3 review on #664. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * fix(#656): bind classify-confidence verdict to code, closing CLI self-grading Adversarial review found the new --legitimacy-verdict flag was caller-supplied, so an agent could self-assert OK->HIGH without any real legitimacy check — reintroducing the exact self-grading hole W3 closes. Remove the free flag; the CLI now computes the verdict via checkPackages only when --package/--ecosystem is given (code-computed, not agent-asserted). Update the stale CLI test (context7 alone -> MEDIUM) and extend the property test to vary legitimacyVerdict. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
GSD Core
Git. Ship. Done.
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A light-weight meta-prompting, context engineering, and spec-driven development system for Claude Code, OpenCode, Gemini CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more.
What is GSD Core
GSD Core is a context-engineering and spec-driven development framework that drives AI coding agents (Claude Code, Codex, Gemini CLI, Copilot, Cursor, and more) through a disciplined phase loop. It solves context rot — the quality degradation that accumulates as an AI fills its context window — by running all heavy research, planning, and execution work in fresh-context subagents while keeping your main session lean.
How it works
Each milestone repeats the same five-step loop, one phase at a time:
- Discuss — capture implementation decisions before anything is planned
- Plan — research, decompose, and verify the plan fits a fresh context window
- Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
- Verify — walk through what was built; diagnose and fix before declaring done
- Ship — create the PR, archive the phase, repeat for the next one
Quickstart
npx @opengsd/gsd-core@latest
The installer prompts for your runtime (Claude Code, OpenCode, Gemini CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more) and whether to install globally or locally. The installer is required for cross-runtime compatibility — do not copy files from agents/ or commands/ directly.
On another runtime or without Node.js? See Install on your runtime.
Once installed, start your first project:
/gsd-new-project
New here? Follow Your first project for a guided walkthrough from install to first shipped phase.
Documentation
Tutorials — learning by doing:
How-to guides — task-focused recipes:
Reference — authoritative facts:
Explanation — concepts and design decisions:
Full index: docs/README.md. Other languages: 日本語 · 한국어 · Português · 简体中文.
Why it works
Most AI-coding setups fail at scale because context bloat silently degrades output quality, there is no shared memory between sessions, and nothing verifies that code actually works. GSD Core solves all three: heavy work runs in fresh subagents, structured artifacts like STATE.md and CONTEXT.md survive session boundaries, and the verify step walks through what was built and generates fix plans before a phase is declared done. See docs/explanation/context-engineering.md for the full reasoning.
Troubleshooting? See docs/how-to/recover-and-troubleshoot.md.
Community
| Project | Platform |
|---|---|
| gsd-opencode | Original OpenCode port |
| Discord | Community support |
Star History
License
MIT License. See LICENSE for details.
Claude Code is powerful. GSD Core makes it reliable.