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This section covers the API at api.quiver.ai.
If you are using the app at app.quiver.ai, start with the App docs.

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Authentication

The QuiverAI API uses API keys with bearer authentication.
  • Create and manage keys in API Keys.
  • Follow the Quickstart to run your first call.
  • Keep keys server-side and load them from environment variables or secret managers.
Authorization: Bearer <QUIVERAI_API_KEY>

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Base URL and headers

Send API requests to: https://api.quiver.ai/v1 Use these headers on JSON requests: 
Authorization: Bearer <QUIVERAI_API_KEY>
Content-Type: application/json
When stream is false, SVG endpoints return JSON with id, created, data, and optional usage. When stream is true, they return text/event-stream with reasoning, draft, and content events, followed by data: [DONE].

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Core endpoints

  • GET /v1/models
  • GET /v1/models/{model}
  • POST /v1/svgs/generations
  • POST /v1/svgs/vectorizations

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Billing and usage records

  • Each generated or vectorized SVG uses 1 credit.
  • Requests with n > 1 consume n credits when they succeed.
  • In Usage, API calls appear with a request ID.

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Errors and rate limits

The API returns standard HTTP status codes and a JSON error payload. Current public API rate limit for SVG endpoints:
  • 20 requests per 60 seconds
  • Scoped per organization
  • Applied to POST /v1/svgs/generations and POST /v1/svgs/vectorizations
  • Exposed through X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset
{
  "status": 429,
  "code": "rate_limit_exceeded",
  "message": "Rate limit exceeded",
  "request_id": "550e8400-e29b-41d4-a716-446655440000"
}
  • 400 Bad Request: malformed body, missing required fields, or invalid parameter values.
  • 401 Unauthorized: API key missing, malformed, revoked, otherwise invalid, or the organization could not be resolved for billing. Machine-readable codes include invalid_api_key and unauthorized.
  • 402 Payment Required: insufficient credits. Purchase more at Billing.
  • 403 Forbidden: frozen accounts return the account_frozen code.
  • 404 Not Found: the requested model does not exist.
  • 429 Too Many Requests: rate limit exceeded. Retry after the period in the Retry-After header.
  • 500 Internal Server Error: unexpected server error.
  • 502 Bad Gateway: an upstream processing dependency returned an error.
  • 503 Service Unavailable: an upstream processing dependency could not be reached.
Use exponential backoff for retries and respect Retry-After when present.

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SDKs

QuiverAI provides an official Node.js SDK: 
npm install @quiverai/sdk
For other languages, call the REST API directly.