{"record":{"id":"68e9d1555ee8cbfc","repo":"openai/codex","slug":"unknown-mcp-server-name","errorCode":null,"errorMessage":"unknown MCP server '{name}'","messagePattern":"unknown MCP server '(.+?)'","errorType":"exception","errorClass":"anyhow::Error","httpStatus":null,"severity":"error","filePath":"codex-rs/codex-mcp/src/connection_manager/resources.rs","lineNumber":175,"sourceCode":"            .with_context(|| format!(\"resources/read failed for `{server}` ({uri})\"))\n    }\n\n    pub(crate) async fn client_by_name(\n        &self,\n        name: &str,\n    ) -> Result<(ManagedClient, Option<Duration>)> {\n        let (client, timeout, _connection) = self.client_with_connection_by_name(name).await?;\n        Ok((client, timeout))\n    }\n\n    pub(crate) async fn client_with_connection_by_name(\n        &self,\n        name: &str,\n    ) -> Result<(ManagedClient, Option<Duration>, Arc<McpServerConnection>)> {\n        let view = self\n            .servers\n            .get(name)\n            .ok_or_else(|| anyhow!(\"unknown MCP server '{name}'\"))?;\n        let connection = Arc::clone(&view.connection);\n        let client = connection.client().await.context(\"failed to get client\")?;\n        Ok((client, view.tool_timeout, connection))\n    }\n}\n","sourceCodeStart":157,"sourceCodeEnd":181,"githubUrl":"https://github.com/openai/codex/blob/339751715c64496cb86246bfb3935f40e309dd3d/codex-rs/codex-mcp/src/connection_manager/resources.rs#L157-L181","documentation":"Error \"unknown MCP server '{name}'\" thrown in openai/codex.","triggerScenarios":"Thrown at codex-rs/codex-mcp/src/connection_manager/resources.rs:175 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"339751715c64496cb86246bfb3935f40e309dd3d","analyzedAt":"2026-08-25T05:35:09.876Z","schemaVersion":2},"datasetVersion":"2026-08-25T06:17:31.827Z"}