agentic-dev/docs/work/2026-05-14-ci-security-and-supply-chain/02-socket-integration/_story.md

id, epic, title, type, status, feature, depends-on, blocks

id	epic	title	type	status	feature	depends-on	blocks
02-socket-integration	2026-05-14-ci-security-and-supply-chain	Socket integration (skill + CI)	technical-story	done	tooling	01-trace-schema-extensions	08-reviewer-prompt-update

Goal

Wire Socket.dev into two enforcement layers: (1) the evaluate-library skill gains Filter 9 (supply-chain behavior) using socket-cli, and (2) ci.yml gains a socket-cli scan step that fails on critical severity findings.

Why

CVE databases are lagging indicators — event-stream, ua-parser-js, and tj-actions/changed-files all shipped malware before any CVE existed. Socket detects behavioral signals (new network calls, new post-install scripts, maintainer-account changes) in real time. Placing it as the 9th filter in evaluate-library + as a CI gate closes the behavior-compromise surface that CVE scanning misses.

External dependency: library-evaluation epic story 04 (evaluate-library skill) must be complete — the skill's SKILL.md must exist and have the 8-filter structure. That epic is marked done.

Done when

• .claude/skills/evaluate-library/SKILL.md has a "Filter 9 — Supply-chain behavior (Socket)" section. The skill's fail-fast logic positions Socket as expensive (network call), running it after the cheap structural filters. The section documents the socket-cli verification command and the JSON output fields used to classify clean / flagged / <finding-summary>. The trace's socket-risk field in filter-results is set from this output.
• .socket.json exists at repo root: { "issueRules": { "critical": "error", "high": "warn", "medium": "ignore", "low": "ignore" } }.
• ci.yml's validate job has a step that runs socket-cli scan against the lockfile, filtered to PRs that touch package.json or pnpm-lock.yaml (via paths: condition). The step exits non-zero on any critical finding.
• docs/guides/ci-security.md Socket App install instructions are deferred to Story 09 (the human guide). This story ships only the machine-enforced layers.
• pnpm typecheck && pnpm lint && pnpm test && pnpm conformance && pnpm fallow:audit && pnpm coverage:diff all pass.

In scope

• .claude/skills/evaluate-library/SKILL.md — Filter 9 section addition.
• .socket.json — repo-root config file.
• .github/workflows/ci.yml — one new step in the validate job (with paths: filter).

Out of scope

• Paid Socket Team plan or server-side PR-block enforcement — explicitly out of PRD scope.
• Socket GitHub App install — consumer-facing instructions live in Story 09's guide.
• Backfilling existing traces with socket-risk — Story 05 (revalidation cron handles this).

Tasks

• Add .socket.json at repo root and extend .claude/skills/evaluate-library/SKILL.md with a "Filter 9 — Supply-chain behavior (Socket)" section: position Socket after cheap filters, document socket-cli as the verification command, specify how clean/flagged/<finding-summary> maps to the trace's socket-risk field; one commit, all gates pass.
• Add a socket-cli scan step to ci.yml's validate job, scoped to PRs touching package.json or pnpm-lock.yaml via a paths: condition; step exits non-zero on any critical finding; one commit, all gates pass.