{"record":{"id":"c45f8499972d3c1f","repo":"JuliusBrussee/caveman","slug":"tool-search-response-contained-an-unknown-or-dupli","errorCode":null,"errorMessage":"tool search response contained an unknown or duplicate tool","messagePattern":"tool search response contained an unknown or duplicate tool","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/sdk/typescript/src/index.ts","lineNumber":1631,"sourceCode":"  const fullSchemaTokens = validCounts ? rawFull : 0;\n  const savedTokens = fullSchemaTokens - sentSchemaTokens;\n  const reductionPct = fullSchemaTokens === 0 ? 0 : Math.round((savedTokens / fullSchemaTokens) * 1000) / 10;\n\n  const catalogByName = new Map<string, CaveTool>();\n  for (const tool of catalog) {\n    if (typeof tool.name !== \"string\" || tool.name.trim() === \"\" || catalogByName.has(tool.name)) {\n      throw new Error(\"tool catalog names must be non-empty and unique\");\n    }\n    catalogByName.set(tool.name, tool);\n  }\n  if (!Array.isArray(data.tools)) throw new Error(\"tool search response tools must be an array\");\n  const returnedNames = new Set<string>();\n  const selectedTools = data.tools.map((wire: unknown) => {\n    const name = wire !== null && typeof wire === \"object\" && typeof (wire as Record<string, unknown>)[\"name\"] === \"string\"\n      ? (wire as Record<string, unknown>)[\"name\"] as string\n      : \"\";\n    const local = catalogByName.get(name);\n    if (!local || returnedNames.has(name)) throw new Error(\"tool search response contained an unknown or duplicate tool\");\n    returnedNames.add(name);\n    return local;\n  });\n\n  return {\n    sessionId: typeof data.session_id === \"string\" ? data.session_id : undefined,\n    tools: selectedTools,\n    sentSchemaTokens,\n    fullSchemaTokens,\n    deferredCount: strictNonNegativeInt(data.deferred_count) ?? 0,\n    method: data.method ?? \"unknown\",\n    tokenBasis: typeof data.token_basis === \"string\" && data.token_basis.trim() ? data.token_basis : \"unavailable\",\n    basis: \"inferred\",\n    savedTokens,\n    reductionPct\n  };\n}\n","sourceCodeStart":1613,"sourceCodeEnd":1649,"githubUrl":"https://github.com/JuliusBrussee/caveman/blob/27d5a3981a347890211bb1bf2439e5c821a63bc9/packages/sdk/typescript/src/index.ts#L1613-L1649","documentation":"Error \"tool search response contained an unknown or duplicate tool\" thrown in JuliusBrussee/caveman.","triggerScenarios":"Thrown at packages/sdk/typescript/src/index.ts:1631 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["The search returned an unknown or duplicate tool; refresh the catalog and retry."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"27d5a3981a347890211bb1bf2439e5c821a63bc9","analyzedAt":"2026-08-15T09:26:11.751Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}