{"record":{"id":"8a28e862d854ffcd","repo":"earendil-works/pi","slug":"extension-command-commandname-cannot-be-queu","errorCode":null,"errorMessage":"Extension command \"/${commandName}\" cannot be queued. Use prompt() or execute the command when not streaming.","messagePattern":"Extension command \"/(.+?)\" cannot be queued\\. Use prompt\\(\\) or execute the command when not streaming\\.","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/coding-agent/src/core/agent-session.ts","lineNumber":1430,"sourceCode":"\t\t\tcontent.push(...images);\n\t\t}\n\t\tthis.agent.followUp({\n\t\t\trole: \"user\",\n\t\t\tcontent,\n\t\t\ttimestamp: Date.now(),\n\t\t});\n\t}\n\n\t/**\n\t * Throw an error if the text is an extension command.\n\t */\n\tprivate _throwIfExtensionCommand(text: string): void {\n\t\tconst spaceIndex = text.indexOf(\" \");\n\t\tconst commandName = spaceIndex === -1 ? text.slice(1) : text.slice(1, spaceIndex);\n\t\tconst command = this._extensionRunner.getCommand(commandName);\n\n\t\tif (command) {\n\t\t\tthrow new Error(\n\t\t\t\t`Extension command \"/${commandName}\" cannot be queued. Use prompt() or execute the command when not streaming.`,\n\t\t\t);\n\t\t}\n\t}\n\n\t/**\n\t * Send a custom message to the session. Creates a CustomMessageEntry.\n\t *\n\t * Handles three cases:\n\t * - Streaming: queues message, processed when loop pulls from queue\n\t * - Not streaming + triggerTurn: appends to state/session, starts new turn\n\t * - Not streaming + no trigger: appends to state/session, no turn\n\t *\n\t * @param message Custom message with customType, content, display, details\n\t * @param options.triggerTurn If true and not streaming, triggers a new LLM turn\n\t * @param options.deliverAs Delivery mode: \"steer\", \"followUp\", or \"nextTurn\"\n\t */\n\tasync sendCustomMessage<T = unknown>(","sourceCodeStart":1412,"sourceCodeEnd":1448,"githubUrl":"https://github.com/earendil-works/pi/blob/4af9d21d3b4d664e4a29fcabfec85171077248e3/packages/coding-agent/src/core/agent-session.ts#L1412-L1448","documentation":"Error \"Extension command \"/${commandName}\" cannot be queued. Use prompt() or execute the command when not streaming.\" thrown in earendil-works/pi.","triggerScenarios":"Thrown at packages/coding-agent/src/core/agent-session.ts:1430 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":"4af9d21d3b4d664e4a29fcabfec85171077248e3","analyzedAt":"2026-08-24T13:07:14.692Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}