contract-review
Deep review that audits API contracts for mismatches between what callers assume and what implementations enforce. Designed for nightly CI, pre-release scans, or manual deep audits — runs in tens of minutes, not seconds. Surfaces bugs that single-pass OWASP review misses — caller/callee invariant gaps, trust-anchor confusion, predicate misnaming.
Install
With your agent
Install OMGSkills skill "thejefflarson/soundcheck:.claude/skills/contract-review" into this agent's normal skills directory: call the OMGSkills MCP get_install_plan tool for your agent and run the script it returns (it installs only the pinned commit and verifies SKILL.md), and stop if MCP or the pin is unavailable. Do not overwrite or change existing skills without asking me.
Manual command
git clone https://github.com/thejefflarson/soundcheck /tmp/soundcheck && ln -s /tmp/soundcheck/.claude/skills/contract-review ~/.claude/skills/contract-review
From README
Contract Review (deep) (A04:2025) What this checks Bugs that only resolve across both sides of a contract — a helper whose body guarantees less than callers assume. security-review pattern-matches 45 OWASP/LLM categories; this exists for what that misses. Nightly CI or manual audits; not per-PR. Vulnerable patterns Deliberately none. Pattern lists bias the search; contract-audit uses one open question per hotspot — what does the caller assume that the body doesn't enforce? — and the orchestrator does not inspect code. Procedure Use the Agent tool to dispatch subagents. Don't audit yourself. Keep state in conversation memory; don't write files. Stage 0 — Threat model Dispatch one threat-modeling subagent. Keep its JSON in conversation context; thread it into every later subagent. Stage 1 — Hotspot seed Dispatch one hotspot-mapping subagent with the threat model JSON.
More from this repo
authentication-failures
Detects weak password storage, flawed JWT validation, sessions surviving logout, and missing MFA in authentication code.
broken-access-control
Detects missing ownership checks, broken role enforcement, and IDOR vulnerabilities that let users access other users'...
concurrency-correctness
Detects multi-threaded code where a lock is held across a blocking operation, lock acquisition order risks deadlock,...
