Mint API

Mint API

Use Mint's production API as an account-owned asset pipeline.

Start Safely

1. Read references/quickstart.md.
2. When a compact map of the current public docs would help, fetch https://docs.mint.gg/llms.txt. Fetch https://docs.mint.gg/llms-full.txt only when the task needs broader context across several guides.
3. Read the production OpenAPI contract at https://api.mint.gg/openapi.json before using an unfamiliar endpoint or field. It is the source of truth for exact endpoints and schemas.
4. Read MINT_API_KEY from the environment. Never print, paste, transmit to an unrelated service, or commit it.
5. Run node scripts/check-connection.mjs only when the user authorizes a live identity and Credits check.

Workflow

1. Choose the service and fast/standard/production preset. Omit generationMode to use the recommended auto workflow; opt into review only when the integration needs a Preview decision.
2. Start the generation. Use name only when the user wants a specific title shown in Mint.
3. Save the returned operation ID. When the operation creates an asset, read its type and ID from operation.resource.
4. Poll the operation with bounded exponential backoff. Use scripts/poll-operation.mjs or equivalent application logic.
5. In review mode, stop at preview_ready; approve or revise only with the user's intended decision.
6. Handle every terminal status, including partially_succeeded.
7. Retrieve the asset and discover its files through manifests rather than guessing file URLs.

Read references/service-workflows.md for service workflows and review actions, and references/assets-and-files.md for asset delivery.

Invariants

• API-created resources belong to the Mint account and can appear through API, MCP, and Mint.
• World, 3D Model, and Asset Pack generation accepts either one imageUrl or 2–8 sourceImages, never both. Materials and Material Packs consume only one imageUrl.
• Start Asset Packs with a natural-language prompt; Mint plans the individual assets and shared style. Use optional itemCount, assetPackType, or styleGuide only when exact control is needed. If no count is supplied or stated in the prompt, Mint creates 8 assets. If no specialized type fits, Mint uses general_asset_pack.
• Use riggingPose: "t_pose" | "a_pose" only for 3D Models and Asset Packs. It prepares a full-body, front-facing, empty-handed humanoid Preview for later rigging; it does not rig or animate the asset.
• Convert an account-owned 3D Model with POST /v1/models/{modelId}:convert. Send only the requested formats and optional name in the body; never send an external source URL.
• Provider model IDs are not part of the public contract. Send a public preset.
• Treat totalReserved, monthlyReserved, and topUpReserved as pending Credits, not settled spend.
• When an operation reports billing_required, show its billing action and preserve the operation ID. After billing is resolved, resume an operation that has a Preview or intermediate resource; if no resource was created, retry the original request with the same Idempotency-Key.
• Bound polling, retries, batch size, and total cost. Respect Retry-After. Mint allows 600 authenticated requests per minute and 30 paid-work starts per minute per account, shared across the account's API keys.
• Omit Idempotency-Key for normal mutations. If an integration will retry an uncertain mutation, generate one stable key before the first attempt and reuse it only for retries of that request.
• Never expose internal URLs, local-testing keys, provider credentials, private documentation, or implementation-only model IDs.
• Keep API keys out of browser and mobile clients. Call Mint from trusted server code.

Read references/errors-and-retries.md before designing error handling.