{"record":{"id":"6bb1121922d4b4ad","repo":"JuliusBrussee/caveman","slug":"filter-monitor-has-unknown-key-s-monitorunknow","errorCode":null,"errorMessage":"filter monitor has unknown key(s): ${monitorUnknown.sort().join(\", \")}","messagePattern":"filter monitor has unknown key\\(s\\): (.+?)","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"packages/cli/src/agent-mcp.ts","lineNumber":492,"sourceCode":"    if (key === \"status_class\" && value.some((entry) => ![\"2xx\", \"4xx\", \"5xx\"].includes(entry as string))) {\n      throw new Error(\"filter status_class values must be 2xx, 4xx, or 5xx\");\n    }\n  }\n  for (const key of [\"min_cost_usd\", \"max_cost_usd\", \"min_total_tokens\", \"max_total_tokens\", \"min_latency_ms\", \"max_latency_ms\"]) {\n    const value = filters[key];\n    if (value !== undefined && (typeof value !== \"number\" || !Number.isFinite(value))) {\n      throw new Error(`filter ${key} must be a finite number`);\n    }\n  }\n  for (const key of [\"has_error\", \"compressed\"]) {\n    const value = filters[key];\n    if (value !== undefined && typeof value !== \"boolean\") throw new Error(`filter ${key} must be a boolean`);\n  }\n  const monitor = filters.monitor;\n  if (monitor !== undefined) {\n    if (!monitor || typeof monitor !== \"object\" || Array.isArray(monitor)) throw new Error(\"filter monitor must be an object\");\n    const monitorUnknown = Object.keys(monitor).filter((key) => key !== \"id\" && key !== \"verdict\");\n    if (monitorUnknown.length > 0) throw new Error(`filter monitor has unknown key(s): ${monitorUnknown.sort().join(\", \")}`);\n    if (typeof monitor.id !== \"string\" || monitor.id.trim() === \"\") throw new Error(\"filter monitor.id is required\");\n    if (typeof monitor.verdict !== \"string\" || ![\"pass\", \"fail\", \"error\"].includes(monitor.verdict)) {\n      throw new Error(\"filter monitor.verdict must be pass, fail, or error\");\n    }\n  }\n}\n\nfunction optionalEnum(args: JSONObject, key: string, values: string[]): void {\n  const value = args[key];\n  if (value !== undefined && (typeof value !== \"string\" || !values.includes(value))) {\n    throw new Error(`${key} must be one of ${values.join(\", \")}`);\n  }\n}\n\nfunction validateTraceSearch(args: JSONObject): void {\n  validateTraceFilters(args);\n  for (const key of [\"from\", \"to\"]) {\n    const value = args[key];","sourceCodeStart":474,"sourceCodeEnd":510,"githubUrl":"https://github.com/JuliusBrussee/caveman/blob/27d5a3981a347890211bb1bf2439e5c821a63bc9/packages/cli/src/agent-mcp.ts#L474-L510","documentation":"Inside the monitor filter object, only keys `id` and `verdict` are accepted. Any extra key (e.g. name, status, version) is collected, sorted, and reported in the error so the caller knows exactly what to remove.","triggerScenarios":"filters.monitor = { id: \"mon_1\", verdict: \"pass\", name: \"latency\" }; copying a fuller monitor object from an API response into the filter.","commonSituations":"Pasting whole monitor entities from caveman_report/experiment output as filters; guessing unsupported sub-filters.","solutions":["Reduce the monitor filter to exactly { id } or { id, verdict }.","Pick the keys named in the error message and delete them from the args.","Filter on other monitor attributes client-side after retrieving results."],"exampleFix":"// before\n{ filters: { monitor: { id: \"mon_1\", verdict: \"pass\", name: \"latency\" } } }\n\n// after\n{ filters: { monitor: { id: \"mon_1\", verdict: \"pass\" } } }","handlingStrategy":"validation","validationCode":"const monitorKeys = new Set([\"id\", \"verdict\"]);\nconst extra = Object.keys(filters.monitor).filter((k) => !monitorKeys.has(k));\nif (extra.length) throw new Error(`monitor has unknown keys: ${extra.join(\", \")}`);","typeGuard":"function isCleanMonitor(m: Record<string, unknown>): boolean {\n  return Object.keys(m).every((k) => k === \"id\" || k === \"verdict\");\n}","tryCatchPattern":null,"preventionTips":["Project API monitor entities down to { id, verdict? } before using them as filters.","Let the sorted key list in the message drive automated cleanup."],"tags":["mcp","validation","filters","monitor"],"backgroundTag":null,"analyzedSha":"27d5a3981a347890211bb1bf2439e5c821a63bc9","analyzedAt":"2026-08-15T09:26:11.751Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}