# Fare

> Small, exact APIs priced per call, built for developers and AI agents. One key, one bill. Failed calls are never billed. Base URL: https://api.fare.dev. Auth: X-API-Key header.

## Docs

- [API docs (Markdown)](https://fare.dev/docs/index.md): authentication, endpoints, examples, error codes
- [OpenAPI 3.1 spec](https://fare.dev/openapi.json): machine-readable description of every endpoint

## APIs

- [PDF/UA validator](https://fare.dev/docs/index.md): POST /v1/pdf/validate with a PDF body; returns PDF/UA-1 or PDF/UA-2 violations with veraPDF rule IDs
- [PDF/UA remediator](https://fare.dev/docs/index.md): POST /v1/pdf/remediate with a PDF body; returns the PDF tagged and repaired for PDF/UA-1 (or a JSON report with format=json), plus fixes and review items
- [Email-security grade](https://fare.dev/docs/index.md): GET /v1/email-grade?domain=...; returns an A–F SPF/DKIM/DMARC grade with fixes