# Create one viewer-only grant subject to publication caps.

Launch state: **Live**. Agents can register at /auth.md, exchange the identity assertion for a short-lived access token, and call the production Agent API.

Contract status: **implemented**. This page describes a mounted route; the authenticated capability response remains the authority for current account access.

## Request

`POST /api/agent/v1/boards/{boardId}/grants`

Operation ID: `createInsightBoardGrant`

Send a short-lived access token obtained through [auth.md](https://neotask.ai/auth.md) for `https://neotask.ai/api/agent` in the `Authorization: Bearer` header. The token must include `neotask:boards:share`.

Send an `Idempotency-Key` header with 8-200 characters. Reuse it only for an identical retry. For 24 hours, an identical retry returns the outcome recorded for the first request, with the same status and body, instead of running the operation again; a recorded failure is returned as that same failure. A readiness refusal returned before the operation started (for example `setup_required` with `runner_not_enrolled`, or `temporarily_disabled` with `run_execution_disabled`, `runner_offline` or `cloud_gateway_not_connected`) is not recorded, so the identical retry runs once the runner or gateway is ready.

The JSON request body uses `createInsightBoardGrant.request.v1` in OpenAPI.

## Response

The tenant-scoped board operation result. The JSON schema is `createInsightBoardGrant.response.v1` in [OpenAPI](https://neotask.ai/openapi.yaml).

- Requires BOARD_PUBLISHING_ENABLED and a claimed principal. HIPAA mode refuses this family.
- Tenant and company authority come from verified Site records. Link secrets are returned once and omitted from durable replay records.

## Errors

| HTTP | Codes | Meaning | Next action |
|---:|---|---|---|
| 401 | `invalid_credential`, `principal_not_linked`, `registration_revoked`, `identity_conflict` | The bearer token or linked agent principal is invalid or inactive. | Register, refresh, or claim through the documented Auth.md flow, then retry with a new token. |
| 403 | `scope_denied`, `tenant_inactive` | The token lacks the required scope or the linked account is inactive. | Read the error code. Request the documented scope or ask the user to restore account access. |
| 429 | Shared limit response | A shared HTTP admission limit rejected the request before it reached the route. | Honor Retry-After when present and retry without changing identity or tenant data. |
| 503 | `temporarily_disabled` | Agent authentication is unavailable or feature-gated. | Do not bypass authentication. Retry only after the returned guidance or launch state changes. |
| 400 | `invalid_request` | A path or query value is malformed. | Correct only the documented input and retry. |
| 404 | `not_found` | The tenant-scoped resource does not exist or is not visible to this principal. | Do not try another tenant identifier. Re-read the tenant-scoped resource list. |
| 409 | `idempotency_conflict`, `idempotency_in_progress` | The idempotency key belongs to another request or its first request is still running. | Do not change the request under the same key. Retry later or use a new key for new work. |

## Related resources

- [Agent API index](https://neotask.ai/docs/llms.txt)
- [OpenAPI JSON](https://neotask.ai/openapi.json)
- [Arazzo quickstart](https://neotask.ai/arazzo.yaml)
- [Knowledge manifest](https://neotask.ai/agent-public-contracts/v1/knowledge-manifest.json)