> ## Documentation Index > Fetch the complete documentation index at: https://docs.simforge.ai/llms.txt > Use this file to discover all available pages before exploring further. # Exchange a grant for tokens > The token endpoint (RFC 6749). The public `simforge-cli` client (its `client_id` required): the device code grant, `authorization_code` with PKCE, and rotating `refresh_token`. An AI agent (auth.md, no `client_id`): the claim grant `urn:workos:agent-auth:grant-type:claim`, polling its registration, and the JWT-bearer grant (RFC 7523) re-exchanging the identity assertion the claim grant returned; agents get no refresh token. Unauthenticated by design: each grant is bound by a device code, PKCE, a claim token, an assertion this host signed, or an unspent refresh token. While the person has not approved yet, the device and claim grants answer `authorization_pending` (or `slow_down`). ## OpenAPI ````yaml /api-reference/openapi.json post /api/cli/token openapi: 3.1.0 info: title: SimForge Cloud API version: '2026-10-24' description: >- The public SimForge API: what `simforge --cloud`, `simforge login` and the Python client call. Authenticate with a bearer token: the access token `simforge login` stores, an AI agent's access token (its recipe is `/auth.md`), or an `sfk_` API key. A `/api/v1` 401 carries `WWW-Authenticate: Bearer resource_metadata="/.well-known/oauth-protected-resource"`. `/api/v1` errors are an `ErrorEnvelope`; `/api/cli` and `/agent` errors are an OAuth error object. Versions: send `SimForge-Version: ` (2026-10-01, 2026-10-21, 2026-10-22, 2026-10-23, 2026-10-24) and every `/api/v1` response is in that version's shape and names it in the same header; this document describes 2026-10-24. A request without the header gets 2026-10-01, where an error's hint is `detail.hint` and `GET /api/v1/evaluations` names its rows `jobs`. A header that is not a date, or a date before 2026-10-01, is `400 bad_request`. Every response also carries `SimForge-Cli-Minimum`: the oldest `simforge` CLI the server serves. Retries: from 2026-10-21, send a new `Idempotency-Key` (1-255 characters) with every POST, PUT, PATCH and DELETE, and the same key when retrying that request. The first request's answer is kept for 24 hours and a repeat gets it again with `Idempotent-Replayed: true`; the key with any other request, or while the first is still running, is `409 idempotency_conflict` (`retryable` while running). A 5xx answer is not kept. Creating an API key refuses a key (its secret is shown once). license: name: Apache-2.0 identifier: Apache-2.0 servers: - url: https://dev.simforge.ai description: Development (dev.simforge.ai) security: [] tags: - name: Sign-in description: >- `simforge login`: OAuth 2.0 device and browser sign-in for the CLI, the session behind a token. AI agents sign in through auth.md (`/auth.md`): register, a person approves, then the claim and JWT-bearer grants. - name: Account description: The principal, its workspaces, API keys and usage, and system status. - name: Runs description: >- Cloud runs (`--cloud`): renders, simulations, Recast log ingestion and transfers, their events and artifacts. - name: Models description: Customer fine-tunes and their workspace-owned model weights. - name: Datasets description: >- Datasets, their files as signed links (`simforge.dataset-files/v1`, `simforge datasets pull`), and copies out of shared datasets (SIMLOG-25k). - name: Maps and vehicles description: >- Maps the workspace can use, the vehicles a scenario can bind and the asset gallery. - name: Authoring description: >- Hosted scenario authoring: drafts, transactions, validation and map discovery. - name: Distribution description: >- The runtime and map pack agreement and signed downloads (`simforge runtime install`, `simforge maps pull`). - name: Telemetry description: Runtime usage telemetry, a condition of the runtime terms. - name: Benchmark description: Renderer benchmark results and scene packs (`simforge bench`). - name: Challenge description: >- The driving challenge: team, registry login and submissions (`simforge challenge`). paths: /api/cli/token: post: tags: - Sign-in summary: Exchange a grant for tokens description: >- The token endpoint (RFC 6749). The public `simforge-cli` client (its `client_id` required): the device code grant, `authorization_code` with PKCE, and rotating `refresh_token`. An AI agent (auth.md, no `client_id`): the claim grant `urn:workos:agent-auth:grant-type:claim`, polling its registration, and the JWT-bearer grant (RFC 7523) re-exchanging the identity assertion the claim grant returned; agents get no refresh token. Unauthenticated by design: each grant is bound by a device code, PKCE, a claim token, an assertion this host signed, or an unspent refresh token. While the person has not approved yet, the device and claim grants answer `authorization_pending` (or `slow_down`). operationId: createCliToken requestBody: required: true content: application/x-www-form-urlencoded: schema: $ref: '#/components/schemas/CliTokenRequest' responses: '200': description: >- A CLI session's access and refresh tokens; an agent's first access token and identity assertion (claim grant); or a fresh access token (JWT-bearer grant). content: application/json: schema: oneOf: - $ref: '#/components/schemas/CliTokenResponse' - $ref: '#/components/schemas/AgentClaimTokenResponse' - $ref: '#/components/schemas/AgentJwtBearerTokenResponse' '400': description: 'The request failed: an OAuth error object.' content: application/json: schema: $ref: '#/components/schemas/CliOAuthError' '401': description: 'The request failed: an OAuth error object.' content: application/json: schema: $ref: '#/components/schemas/CliOAuthError' '403': description: 'The request failed: an OAuth error object.' content: application/json: schema: $ref: '#/components/schemas/CliOAuthError' '429': description: 'The request failed: an OAuth error object.' content: application/json: schema: $ref: '#/components/schemas/CliOAuthError' security: [] components: schemas: CliTokenRequest: oneOf: - type: object properties: client_id: type: string enum: - simforge-cli grant_type: type: string enum: - urn:ietf:params:oauth:grant-type:device_code device_code: type: string required: - client_id - grant_type - device_code - type: object properties: client_id: type: string enum: - simforge-cli grant_type: type: string enum: - authorization_code code: type: string redirect_uri: type: string description: The loopback redirect the authorization request named. code_verifier: type: string description: The PKCE (S256) verifier. required: - client_id - grant_type - code - redirect_uri - code_verifier - type: object properties: client_id: type: string enum: - simforge-cli grant_type: type: string enum: - refresh_token refresh_token: type: string description: >- An unspent `sfc_rt_…` token. Refresh tokens rotate: each one is spent once. required: - client_id - grant_type - refresh_token - type: object properties: grant_type: type: string enum: - urn:workos:agent-auth:grant-type:claim claim_token: type: string description: The `claim_token` of the registration. required: - grant_type - claim_token - type: object properties: grant_type: type: string enum: - urn:ietf:params:oauth:grant-type:jwt-bearer assertion: type: string description: The `identity_assertion` the claim grant returned. resource: type: string description: >- Optional (RFC 8707): the protected resource, which must be this host's `/api/v1`. required: - grant_type - assertion CliTokenResponse: type: object properties: access_token: type: string description: A `sfc_at_…` bearer token for `/api/v1` and `/api/cli`. token_type: type: string enum: - Bearer expires_in: type: integer refresh_token: type: string refresh_expires_in: type: integer scope: type: string session_id: type: string account: type: object properties: id: type: string email: type: string name: type: string required: - id - email - name organization: type: object properties: id: type: string name: type: string workspace_id: type: string required: - id - name - workspace_id required: - access_token - token_type - expires_in - refresh_token - refresh_expires_in - scope - session_id - account - organization AgentClaimTokenResponse: type: object properties: access_token: type: string description: >- A `sfc_at_…` bearer token for `/api/v1`, valid for `expires_in` seconds. token_type: type: string enum: - Bearer expires_in: type: integer scope: type: string identity_assertion: type: string description: >- A service-signed JWT: exchange it with the JWT-bearer grant for a fresh access token until `assertion_expires`. A secret: keep it like a password. assertion_expires: type: string session_id: type: string description: >- The session the account sees and can revoke under Account → CLI sessions. account: type: object properties: id: type: string email: type: string name: type: string required: - id - email - name organization: type: object properties: id: type: string name: type: string workspace_id: type: string required: - id - name - workspace_id required: - access_token - token_type - expires_in - scope - identity_assertion - assertion_expires - session_id - account - organization AgentJwtBearerTokenResponse: type: object properties: access_token: type: string description: >- A `sfc_at_…` bearer token for `/api/v1`, valid for `expires_in` seconds. token_type: type: string enum: - Bearer expires_in: type: integer scope: type: string required: - access_token - token_type - expires_in - scope CliOAuthError: type: object properties: error: type: string description: >- Machine code: an RFC 6749/8628 error (`invalid_grant`, `authorization_pending`, `slow_down`, `invalid_token`, `insufficient_scope`) or a SimForge code (`not_found`, `rate_limited`, …). error_description: type: string description: One sentence for a person. detail: type: object additionalProperties: {} required: - error - error_description ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.