# Quietforge Puzzle Generation API

**Canonical:** https://apis.io/apis/quietforge/puzzle-generation-api/  
**Provider:** Quietforge Studio — https://apis.io/providers/quietforge/  
**Base URL:** https://qf-api.quietforge-studio.workers.dev  
**Documentation:** https://quietforge-studio.pages.dev/docs-api/#sudoku

Quietforge Puzzle Generation API is one of 6 APIs that [Quietforge Studio](https://apis.io/providers/quietforge/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Puzzles, Sudoku, Crossword, PDF, and Print. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and pricing.

Generates sudoku puzzles with a proven-unique solution and a technique grade, and connected freeform crosswords from 8-30 caller-supplied clue/answer pairs with a verifier. Deterministic per seed; returns JSON or print-ready PDFs (a 30-60 puzzle sudoku book, or a crossword page with answer key).

## Operations (2)

| Method | Path | Summary |
|---|---|---|
| POST | `/v1/sudoku` | Generate graded sudoku puzzles ($0.01 per call, x402) |
| POST | `/v1/sudoku/book` | Build a print-ready sudoku book ($3.99 per call, x402) |

## Machine-readable artifacts (4)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/quietforge/refs/heads/main/openapi/quietforge-sudoku-api-openapi.yml
- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/quietforge/refs/heads/main/openapi/quietforge-crossword-api-openapi.yml
- **Documentation** — https://quietforge-studio.pages.dev/docs-api/#sudoku
- **Pricing** — https://qf-api.quietforge-studio.workers.dev/.well-known/x402

## Other Quietforge Studio APIs (5)

- [Quietforge Document Conversion API](https://apis.io/apis/quietforge/document-conversion-api/)
- [Quietforge x402 Service Index API](https://apis.io/apis/quietforge/x402-service-index-api/)
- [Quietforge Book Typesetting API](https://apis.io/apis/quietforge/book-typesetting-api/)
- [Quietforge Family Tree Chart API](https://apis.io/apis/quietforge/family-chart-api/)
- [Quietforge Dataset Audit API](https://apis.io/apis/quietforge/dataset-audit-api/)

## Tags

Puzzles, Sudoku, Crossword, PDF, Print

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/quietforge/puzzle-generation-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/quietforge/.