{"record":{"id":"e7ecc19bb6ca7ff6","repo":"earendil-works/pi","slug":"state-mismatch-e7ecc1","errorCode":null,"errorMessage":"State mismatch.","messagePattern":"State mismatch\\.","errorType":"http","errorClass":null,"httpStatus":400,"severity":"error","filePath":"packages/ai/src/auth/oauth/anthropic.ts","lineNumber":139,"sourceCode":"\n\t\t\t\tconst code = url.searchParams.get(\"code\");\n\t\t\t\tconst state = url.searchParams.get(\"state\");\n\t\t\t\tconst error = url.searchParams.get(\"error\");\n\n\t\t\t\tif (error) {\n\t\t\t\t\tres.writeHead(400, { \"Content-Type\": \"text/html; charset=utf-8\" });\n\t\t\t\t\tres.end(oauthErrorHtml(\"Anthropic authentication did not complete.\", `Error: ${error}`));\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tif (!code || !state) {\n\t\t\t\t\tres.writeHead(400, { \"Content-Type\": \"text/html; charset=utf-8\" });\n\t\t\t\t\tres.end(oauthErrorHtml(\"Missing code or state parameter.\"));\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tif (state !== expectedState) {\n\t\t\t\t\tres.writeHead(400, { \"Content-Type\": \"text/html; charset=utf-8\" });\n\t\t\t\t\tres.end(oauthErrorHtml(\"State mismatch.\"));\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tres.writeHead(200, { \"Content-Type\": \"text/html; charset=utf-8\" });\n\t\t\t\tres.end(oauthSuccessHtml(\"Anthropic authentication completed. You can close this window.\"));\n\t\t\t\tsettleWait?.({ code, state });\n\t\t\t} catch {\n\t\t\t\tres.writeHead(500, { \"Content-Type\": \"text/plain; charset=utf-8\" });\n\t\t\t\tres.end(\"Internal error\");\n\t\t\t}\n\t\t});\n\n\t\tserver.on(\"error\", (err) => {\n\t\t\treject(err);\n\t\t});\n\n\t\tserver.listen(CALLBACK_PORT, CALLBACK_HOST, () => {","sourceCodeStart":121,"sourceCodeEnd":157,"githubUrl":"https://github.com/earendil-works/pi/blob/4af9d21d3b4d664e4a29fcabfec85171077248e3/packages/ai/src/auth/oauth/anthropic.ts#L121-L157","documentation":"Error \"State mismatch.\" thrown in earendil-works/pi.","triggerScenarios":"Thrown at packages/ai/src/auth/oauth/anthropic.ts:139 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["The OAuth state did not match; retry the login and do not reuse stale callback URLs."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"4af9d21d3b4d664e4a29fcabfec85171077248e3","analyzedAt":"2026-08-24T13:07:14.692Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}