{
  "slug": "temporal-cli-workflow-start-accepts-headers-f1459a68edfd",
  "title": "Temporal CLI workflow start accepts headers",
  "tools": [
    "temporal"
  ],
  "tags": [
    "agent"
  ],
  "introduced_at": "2026-02-05T15:35:29.000Z",
  "announced_at": "2026-02-05T15:35:29.000Z",
  "effective_at": null,
  "date_basis": "source-publication",
  "status": "unknown",
  "how": {
    "incantation": "When starting a Workflow Execution with Temporal CLI, use `temporal workflow start` and pass each header as a repeatable `--headers KEY=VALUE` option. Header keys must be identifiers and values must be JSON values.",
    "examples": [
      "temporal workflow start \\\n  --workflow-id <WorkflowId> \\\n  --type <WorkflowType> \\\n  --task-queue <TaskQueue> \\\n  --headers 'my-header=\"value\"' \\\n  --headers 'another-header=123'"
    ],
    "gotchas": [
      "Version: v1.6.0",
      "--headers: Repeatable `KEY=VALUE` workflow header; keys must be identifiers and values must be JSON values. Sets workflow headers, not gRPC headers.",
      "--workflow-id: Workflow ID; if omitted, the Service generates a unique ID.",
      "--type (required): Workflow Type name.",
      "--task-queue (required): Workflow Task queue."
    ]
  },
  "why_it_matters": "Start a workflow with headers set from the Temporal CLI.",
  "sources": [
    "https://github.com/temporalio/cli/releases/tag/v1.6.0",
    "https://github.com/temporalio/cli/pull/883",
    "https://docs.temporal.io/cli/command-reference/workflow"
  ],
  "rank": 0.96023,
  "judge": {
    "publish": true,
    "judge_model": "codex-cli/gpt-6-luna+typesafe/jev-1.13.0",
    "prompt_version": "extract-v7+enrich-v2+judge-v2x3+jev-publish-v1"
  },
  "review_state": "approved",
  "provenance": {
    "run_id": "wave2b-20261017",
    "verdict_id": "wave2b-20261017:wave2b-20261017-75910f05bdf05cbd-4:gate",
    "evidence_hash": "4bdf829b426420af68752ae52164f332687e915629357b8c169ceb8197a030d7"
  },
  "review": {
    "draft_hash": "ae896ed25906a8327e04ae05d9fe5bd2f6a271ef0b507e613e2c1be12179694c",
    "reviewer": "publication-gate",
    "reviewed_at": "2026-10-07T00:00:00.000Z",
    "decision": "wave2b-20261017:gate",
    "reason": "3 of 3 judge runs approved with p_yes >= 0.9 (mean 0.96 >= 0.9; 2 needed) and Jev gave 0.75 (>= 0.6 needed)."
  }
}