AI Constraint Engine with AI Patch Firewall. 42 MCP tools. Patch Gateway (ALLOW/WARN/BLOCK verdicts), diff-native review (10 scored signals, hard escalation rules), Spec Compiler, Code Graph, Typed constraints, Python SDK, ROS2. Works with Claude Code, Cursor, Windsurf, Cline, Bolt.new, Lovable. 1073 tests. Free and open source. By Sandeep Roy.
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process.env. You'll be asked to provide them before it can run.ANTHROPIC_API_KEYGEMINI_API_KEY— Google Gemini API key for hybrid conflict detectionGOOGLE_API_KEYOPENAI_API_KEYPORTSPECLOCK_API_KEY— API key for authenticated accessSPECLOCK_API_URLSPECLOCK_AUDIT_SECRETSPECLOCK_CLI_NO_AUTORUNSPECLOCK_CORS_ORIGINSSPECLOCK_ENCRYPTION_KEY— export ="your-secret"SPECLOCK_LICENSE_KEYSPECLOCK_LLM_KEY— Your own LLM API key (Gemini/OpenAI/Anthropic)SPECLOCK_LLM_PROVIDERSPECLOCK_NO_PROXY— false Set true for heuristic-only mode (~250ms). Skips the Gemini proxy (~2s)SPECLOCK_PROJECT_ROOTSPECLOCK_PROXY_URLSPECLOCK_PUBLIC_URLSPECLOCK_RATE_LIMITSPECLOCK_SAVES_DIRSPECLOCK_SSO_CLIENT_IDSPECLOCK_SSO_CLIENT_SECRETSPECLOCK_SSO_ISSUERSPECLOCK_SSO_REDIRECT_URISPECLOCK_STRICT— Default WARN mode — no more false-positive blocks. Loud warnings instead. Opt in to strict with --strict or =1.SPECLOCK_TELEMETRY— false Opt-in anonymous usage analyticsSPECLOCK_TELEMETRY_ENDPOINTSPECLOCK_VERBOSE[](https://m8ven.ai/mcp/sgroy10-speclock-35bwua)