# agent402.dev Developer tools API

**Canonical:** https://apis.io/apis/agent402-dev/agent402-dev-developer-tools-api/  
**Provider:** agent402.dev — https://apis.io/providers/agent402-dev/  
**Base URL:** https://agent402.dev  
**Documentation:** https://agent402.dev/

agent402.dev Developer tools API is one of 3 APIs that [agent402.dev](https://apis.io/providers/agent402-dev/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Developer Tools. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, an API reference, and a getting-started guide.

The Developer tools API from agent402.dev — 9 operation(s) for developer tools.

## Operations (9)

| Method | Path | Summary |
|---|---|---|
| POST | `/website-preflight` | Preflight one public website with seven HEAD-only checks |
| GET | `/url-evidence` | Capture bounded HTTP, TLS, and SHA-256 evidence for $1 |
| POST | `/site-release-audit` | AI Discovery Site Audit — AEO/GEO Fix Pack for one public URL |
| POST | `/site-release-audit/eligibility` | Check main-document delivery eligibility before paying |
| GET | `/site-release-audit/sample.json` | Inspect a full production-format audit sample for example.com |
| GET | `/site-release-audit/methodology.json` | Inspect the live fixed audit method and fail-closed rules |
| GET | `/site-release-audit/proof/v1/case-study.json` | Verify one frozen v1 base 22-check before/after audit case |
| POST | `/audit-x402` | Audit one public x402 v2 GET endpoint |
| POST | `/x402-health` | Check one public x402 GET endpoint for $0.01 |

## Machine-readable artifacts (11)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/agent402-dev/refs/heads/main/openapi/agent402-dev-developer-tools-api-openapi.yml
- **Documentation** — https://agent402.dev/
- **Documentation** — https://agent402.dev/site-release-audit
- **Documentation** — https://agent402.dev/task-day-plan
- **Documentation** — https://agent402.dev/x402-audit
- **APIReference** — https://agent402.dev/
- **GettingStarted** — https://agent402.dev/
- **Examples** — https://raw.githubusercontent.com/api-evangelist/agent402-dev/refs/heads/main/examples/agent402-dev-examples.yml
- **X-X402Discovery** — https://agent402.dev/.well-known/x402
- **Metrics** — https://agent402.dev/metrics
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/agent402-dev/refs/heads/main/apis.yml

## Other agent402.dev APIs (2)

- [agent402.dev Downloads API](https://apis.io/apis/agent402-dev/agent402-dev-downloads-api/)
- [agent402.dev Productivity API](https://apis.io/apis/agent402-dev/agent402-dev-productivity-api/)

## Tags

Developer Tools

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/agent402-dev/agent402-dev-developer-tools-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/agent402-dev/.