PR #27138 verification, 2026-10-30 Main: github/main 6575ce32508b PR exact head: a367d12b42d126235792aba4e2b5c77162a7e192 This PR changes only evals; no product bug fix is claimed. Baseline check via Blacksmith: vp test run evals/mcp-tool-use/run.test.ts, 409 passed. PR check via Blacksmith: same command, 411 passed. Baseline gradeSample: three newThreads expectations plus one launch => [] (no checks). PR gradeSample: same input => newThreads check pass:false. PR simulator runtime: mixed launch/batch generated ids 1,2,3; own titles and briefs read back; no-brief id4 idle with no items. Real app: installed each checkout using vp i. Main dev ports 8693/16733, stopped by captured process group. PR dev ports 5733/13773 with explicit isolated home /home/user/t3code/.t3. Playwright 1.60.0 from repo dependencies, /usr/bin/google-chrome. Created projects in UI pointing to real checkout paths, selected Codex gpt-6.1-sol, submitted real turns. No Replay provider, mocked app state, seeded fixtures or demo data. Paid eval replay (separate simulated-tool evidence): node mcp-tool-use/run.ts --cases mcp-tool-use/cases/threads-vs-tasks.ndjson --case tt-three-new-threads-one-per-bug --model gpt-6.1-sol --samples 1 --concurrency 1 --max-steps 12 --out /tmp/pr27138-eval Result 1/1 passed. Temporary vibeproxy alias to existing local proxy restored afterward. A 9-sample focused batch hit timeout 600: two provider errors, one three-thread pass, one ordinary task-queue pass reported before termination. No complete batch score claimed. Live main transcript: Create Routing Verification Threads 602fd23a-fa4b-4fa6-831f-871af9a0624c completed codex/gpt-6.1-sol [user] verification only. do not edit files, run tests, commit or publish anything. create exactly three new top-level threads in this project using codex gpt-6.1-sol: one titled routing reconnect with brief Reply exactly RECONNECT VERIFIED, one titled routing csv with brief Reply exactly CSV VERIFIED, and one titled routing admin with brief Reply exactly ADMIN VERIFIED. use the current root checkout. read each created thread back, report its title and brief and link all three distinct threads. do not create delegates for this request. [assistant] i'll create the three top-level threads in the root checkout, then read each back to verify its title and brief. [assistant] created exactly three distinct top-level threads using codex gpt-6.1-sol in the root checkout. read back and verified each title and brief: - routing reconnect: `Reply exactly RECONNECT VERIFIED` - routing csv: `Reply exactly CSV VERIFIED` - routing admin: `Reply exactly ADMIN VERIFIED` no delegates, file edits, tests, commits, or publishing. Live PR transcript: Verify Routing Thread Creation e6f7cf0f-b374-4d67-b5b3-22935b5662f6 completed codex/gpt-6.1-sol [user] verification only. do not edit files, run tests, commit or publish anything. create exactly three new top-level threads in this project using codex gpt-6.1-sol: one titled routing reconnect with brief Reply exactly RECONNECT VERIFIED, one titled routing csv with brief Reply exactly CSV VERIFIED, and one titled routing admin with brief Reply exactly ADMIN VERIFIED. use the current root checkout. read each created thread back, report its title and brief and link all three distinct threads. do not create delegates for this request. [assistant] i'll create the three top-level threads in the root checkout, then read each back to verify its title and brief. [assistant] created exactly three distinct top-level threads in the root checkout using codex gpt-6.1-sol. read back and verified each title and brief. - routing reconnect: `Reply exactly RECONNECT VERIFIED` - routing csv: `Reply exactly CSV VERIFIED` - routing admin: `Reply exactly ADMIN VERIFIED` no delegates, file edits, tests, commits, or publication. [user] verification only: in the background, have another agent using codex gpt-6.1-sol read packages/contracts/src/orchestratorMcp.ts and report two input fields of delegate_task. do not edit files, run tests, commit or publish. meanwhile, read the root package.json and tell me the package name here. do not start any new top-level threads. report the background result when it arrives. [assistant] i'll delegate the read in the background and read the root package.json here. [assistant] the root package name is `@t3tools/monorepo`. the background codex gpt-6.1-sol agent is reading the contract. i'll report its result when it arrives. no new top-level threads were created. [assistant] the background agent reported two `delegate_task` input fields: - `isolation`: optional `"shared" | "worktree"` at [line 173](/home/user/t3code/packages/contracts/src/orchestratorMcp.ts:173). - `mode`: optional `"async" | "wait"` at [line 179](/home/user/t3code/packages/contracts/src/orchestratorMcp.ts:179). [user] read apps/server/src/mcp/delegatedTaskModes.ts and explain what taskPrompt adds to an application task prompt. this is an ordinary code question. keep it brief and do not change files or run checks. [assistant] i'll read the file and summarize what `taskPrompt` adds. [assistant] `taskPrompt` adds a role instruction when `role` is set to something other than `"general"`: ```text Act as the sub-agent for this task. ``` if `role` is missing or `"general"`, it returns the original task unchanged. Live PR children: routing admin mcp:launch:4d62bf7250a44001537c6d65920bebbbf64c9f691f6d64934964dcdc8feb7520 completed codex/gpt-6.1-sol [user] Reply exactly ADMIN VERIFIED [assistant] ADMIN VERIFIED routing csv mcp:launch:64dffafc3b8085565e528ab2cfc8e5dff645adb7b2b25bf6e2cd0e90f7e8b771 completed codex/gpt-6.1-sol [user] Reply exactly CSV VERIFIED [assistant] CSV VERIFIED routing reconnect mcp:launch:477f316705c4ae8550c000dff5befad3fdd133fdb6bb573485da468270cb3357 completed codex/gpt-6.1-sol [user] Reply exactly RECONNECT VERIFIED [assistant] RECONNECT VERIFIED Actual provider tool path, selected fields only: [ { "tool": "t3_thread_launch", "status": "completed", "arguments": { "clientRequestId": "routing-verification-20261030-routing-reconnect", "title": "routing reconnect", "message": "Reply exactly RECONNECT VERIFIED", "modelSelection": { "provider": "codex", "model": "gpt-6.1-sol" }, "workspaceStrategy": { "type": "root" } }, "result": { "threadId": "mcp:launch:477f316705c4ae8550c000dff5befad3fdd133fdb6bb573485da468270cb3357", "link": "", "projectId": "62928edb-38c0-480f-b169-c92825743b9c", "modelSelection": { "instanceId": "codex", "model": "gpt-6.1-sol" }, "runId": "run:thread:mcp%3Alaunch%3A477f316705c4ae8550c000dff5befad3fdd133fdb6bb573485da468270cb3357:ordinal:1", "status": "preparing" } }, { "tool": "t3_thread_launch", "status": "completed", "arguments": { "clientRequestId": "routing-verification-20261030-routing-csv", "title": "routing csv", "message": "Reply exactly CSV VERIFIED", "modelSelection": { "provider": "codex", "model": "gpt-6.1-sol" }, "workspaceStrategy": { "type": "root" } }, "result": { "threadId": "mcp:launch:64dffafc3b8085565e528ab2cfc8e5dff645adb7b2b25bf6e2cd0e90f7e8b771", "link": "", "projectId": "62928edb-38c0-480f-b169-c92825743b9c", "modelSelection": { "instanceId": "codex", "model": "gpt-6.1-sol" }, "runId": "run:thread:mcp%3Alaunch%3A64dffafc3b8085565e528ab2cfc8e5dff645adb7b2b25bf6e2cd0e90f7e8b771:ordinal:1", "status": "preparing" } }, { "tool": "t3_thread_launch", "status": "completed", "arguments": { "clientRequestId": "routing-verification-20261030-routing-admin", "title": "routing admin", "message": "Reply exactly ADMIN VERIFIED", "modelSelection": { "provider": "codex", "model": "gpt-6.1-sol" }, "workspaceStrategy": { "type": "root" } }, "result": { "threadId": "mcp:launch:4d62bf7250a44001537c6d65920bebbbf64c9f691f6d64934964dcdc8feb7520", "link": "", "projectId": "62928edb-38c0-480f-b169-c92825743b9c", "modelSelection": { "instanceId": "codex", "model": "gpt-6.1-sol" }, "runId": "run:thread:mcp%3Alaunch%3A4d62bf7250a44001537c6d65920bebbbf64c9f691f6d64934964dcdc8feb7520:ordinal:1", "status": "preparing" } }, { "tool": "t3_thread_read", "status": "completed", "arguments": { "threadId": "mcp:launch:64dffafc3b8085565e528ab2cfc8e5dff645adb7b2b25bf6e2cd0e90f7e8b771", "limit": 3, "maxCharsPerItem": 1000 }, "result": { "threadId": "mcp:launch:64dffafc3b8085565e528ab2cfc8e5dff645adb7b2b25bf6e2cd0e90f7e8b771", "title": "routing csv", "createdBy": "agent", "status": "running", "model": "gpt-6.1-sol", "items": [ { "type": "user_message", "text": "Reply exactly CSV VERIFIED", "createdBy": "agent" } ] } }, { "tool": "t3_thread_read", "status": "completed", "arguments": { "threadId": "mcp:launch:477f316705c4ae8550c000dff5befad3fdd133fdb6bb573485da468270cb3357", "limit": 3, "maxCharsPerItem": 1000 }, "result": { "threadId": "mcp:launch:477f316705c4ae8550c000dff5befad3fdd133fdb6bb573485da468270cb3357", "title": "routing reconnect", "createdBy": "agent", "status": "completed", "model": "gpt-6.1-sol", "items": [ { "type": "user_message", "text": "Reply exactly RECONNECT VERIFIED", "createdBy": "agent" }, { "type": "assistant_message", "text": "RECONNECT VERIFIED", "createdBy": "agent" } ] } }, { "tool": "t3_thread_read", "status": "completed", "arguments": { "threadId": "mcp:launch:4d62bf7250a44001537c6d65920bebbbf64c9f691f6d64934964dcdc8feb7520", "limit": 3, "maxCharsPerItem": 1000 }, "result": { "threadId": "mcp:launch:4d62bf7250a44001537c6d65920bebbbf64c9f691f6d64934964dcdc8feb7520", "title": "routing admin", "createdBy": "agent", "status": "running", "model": "gpt-6.1-sol", "items": [ { "type": "user_message", "text": "Reply exactly ADMIN VERIFIED", "createdBy": "agent" } ] } }, { "tool": "shell", "command": "/bin/bash -lc 'cat package.json'", "exitCode": 0, "output": "{\"name\":\"@t3tools/monorepo\",\"private\":true,\"type\":\"module\",\"scripts\":{\"prepare\":\"vp config --no-agent\",\"dev\":\"node scripts/dev-runner.ts dev\",\"dev:share\":\"node scripts/dev-runner.ts dev --share\",\"dev:server\":\"node scripts/dev-runner.ts dev:server\",\"dev:web\":\"node scripts/dev-runner.ts dev:web\",\"dev:marketing\":\"vp run --filter @t3tools/marketing dev\",\"dev:desktop\":\"node scripts/dev-runner.ts dev:de" }, { "tool": "orchestrator_capabilities", "status": "completed", "arguments": { "search": "gpt-6.1-sol" }, "result": { "parentThreadId": "e6f7cf0f-b374-4d67-b5b3-22935b5662f6", "inheritedProviderInstanceId": "codex", "inheritedModel": "gpt-6.1-sol", "inheritedOptions": [], "runtimeMode": "full-access", "interactionMode": "default", "providers": [ { "providerInstanceId": "codex", "driverKind": "codex", "displayName": "Codex", "models": [ { "id": "gpt-6.1-sol", "options": [ { "id": "reasoningEffort", "values": [ "low", "medium", "high", "xhigh", "max", "ultra" ], "default": "low" }, { "id": "serviceTier", "values": [ "default", "priority" ], "default": "default" } ] } ], "canRunChildTask": true, "canRunCrossProviderChildTask": true, "constraints": [] }, { "providerInstanceId": "claudeAgent", "driverKind": "claudeAgent", "displayName": "Claude", "models": [], "canRunChildTask": false, "canRunCrossProviderChildTask": false, "constraints": [ "Claude Code is not authenticated. Run `claude auth login` and try again.", "Provider is not authenticated." ] }, { "providerInstanceId": "cursor", "driverKind": "cursor", "displayName": "Cursor", "models": [], "canRunChildTask": false, "canRunCrossProviderChildTask": false, "constraints": [ "Provider instance is disabled." ] }, { "providerInstanceId": "grok", "driverKind": "grok", "displayName": "Grok", "models": [], "runtimeModes": [ "approval-required", "auto", "full-access" ], "canRunChildTask": false, "canRunCrossProviderChildTask": false, "constraints": [ "Provider instance is disabled." ] }, { "providerInstanceId": "opencode", "driverKind": "opencode", "displayName": "OpenCode", "models": [], "canRunChildTask": false, "canRunCrossProviderChildTask": false, "constraints": [ "Provider instance is disabled." ] }, { "providerInstanceId": "antigravity", "driverKind": "antigravity", "displayName": "Antigravity", "models": [], "canRunChildTask": false, "canRunCrossProviderChildTask": false, "constraints": [ "Provider instance is disabled." ] }, { "providerInstanceId": "fx", "driverKind": "fx", "displayName": "fx", "models": [], "runtimeModes": [ "approval-required", "auto" ], "canRunChildTask": false, "canRunCrossProviderChildTask": false, "constraints": [ "Provider instance is disabled." ] }, { "providerInstanceId": "devReplay", "driverKind": "acpRegistry", "displayName": "Replay (dev)", "models": [], "canRunChildTask": true, "canRunCrossProviderChildTask": true, "constraints": [] }, { "providerInstanceId": "muse", "driverKind": "muse", "displayName": "Muse Code", "models": [], "runtimeModes": [ "approval-required", "full-access" ], "canRunChildTask": false, "canRunCrossProviderChildTask": false, "constraints": [ "Provider instance is disabled." ] }, { "providerInstanceId": "pi", "driverKind": "pi", "displayName": "Pi", "models": [], "runtimeModes": [ "approval-required", "auto-accept-edits", "full-access" ], "canRunChildTask": false, "canRunCrossProviderChildTask": false, "constraints": [ "Provider instance is disabled." ] } ], "features": { "appOwnedSubagents": true, "asyncPolling": true, "cancellation": true, "batchThreadCreation": true, "threadManagement": true, "incrementalThreadRead": true, "scheduledTasks": true, "maxBatchThreads": 20 } } }, { "tool": "delegate_task", "status": "completed", "arguments": { "mode": "async", "isolation": "shared", "role": "research", "title": "verify delegate_task input fields", "target": { "providerInstanceId": "codex", "model": "gpt-6.1-sol" }, "task": "Verification only. Read /home/user/t3code/packages/contracts/src/orchestratorMcp.ts and report two input fields of delegate_task, with their types and line references. Do not edit files, run tests, commit, publish, create top-level threads, or delegate further." }, "result": { "taskId": "node:delegated-task:command%3Amcp%3Ad38f1b92-1823-4c3c-a185-5790b991437b%3Adelegate-task%3Aa69f1b3e-6c1e-48b5-bfdd-c3bf83d3d48a", "childThreadId": "thread:delegated-task:command%3Amcp%3Ad38f1b92-1823-4c3c-a185-5790b991437b%3Adelegate-task%3Aa69f1b3e-6c1e-48b5-bfdd-c3bf83d3d48a", "link": "", "childRunId": "run:thread:thread%3Adelegated-task%3Acommand%253Amcp%253Ad38f1b92-1823-4c3c-a185-5790b991437b%253Adelegate-task%253Aa69f1b3e-6c1e-48b5-bfdd-c3bf83d3d48a:ordinal:1", "childNodeId": "node:delegated-task:command%3Amcp%3Ad38f1b92-1823-4c3c-a185-5790b991437b%3Adelegate-task%3Aa69f1b3e-6c1e-48b5-bfdd-c3bf83d3d48a", "status": "running", "workState": "working", "hasPendingChildRuns": false, "latestTerminalRunId": null, "latestTerminalStatus": null, "latestTerminalSummary": null, "latestTerminalResultContextTransferId": null, "providerInstanceId": "codex", "model": "gpt-6.1-sol", "options": [], "summary": null, "resultContextTransferId": null, "hasPendingQuestion": false, "pendingApproval": null, "waitTimedOut": false, "next": "Completion wakes this thread, so end your turn. Do not wait on it or poll it." } }, { "tool": "shell", "command": "/bin/bash -lc 'cat apps/server/src/mcp/delegatedTaskModes.ts'", "exitCode": 0, "output": "import {\n type ModelSelection,\n OrchestratorMcpFailure,\n type OrchestratorMcpDelegateTaskInput,\n type OrchestratorMcpInteractionMode,\n type OrchestratorMcpRuntimeMode,\n type ProviderInteractionMode,\n type RuntimeMode,\n} from \"@t3tools/contracts\";\nimport * as Effect from \"effect/Effect\";\n\n/** How much a runtime mode allows, narrowest first. */\nexport function runtimeModeRank(mode: RuntimeMod" } ]