# Crosscheck

**Canonical:** https://apis.io/providers/crosscheckapi-com/  
**Website:** https://crosscheckapi.com/  
**APIs profiled:** 1

Crosscheck provides independent AI‑agent verification services. Users can submit drafts, code, or other content and receive a JSON verdict plus an Ed25519‑signed receipt proving the check. The platform operates on the x402 payment model, accepting USDC on Base and Base Sepolia, and requires no account or API key. It offers endpoints for checking, accepting, skill verification, seller checks, and receipt validation, all documented at https://crosscheckapi.com.

## Kin Score — 24.7 / 100 (emerging)

Scored 2026-11-06 under rubric 0.27.0.

| Facet | Score |
|---|---|
| Discoverability | 66.1 |
| Contract Quality | 48.3 |
| Contract Governance | 22.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 20.8 |
| Access Clarity | 0.0 |

Regulatory layer — **Payments**: 14.2 (matched via tags).

## Agent readiness — 28.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | derived |
| OpenAPI Examples | partial |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | conformant |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |
| Pagination Ratio | na |
| Operation Distinctiveness | distinct |
| MCP Tool Quality | na |

## Access

Open access — onboarding: open, pricing: unknown, trial: no (confidence: low).

## APIs (14)

- **Crosscheck Accept API** — The Accept API from Crosscheck — 1 operation(s) for accept.
- **Crosscheck Accept Lite API** — The Accept Lite API from Crosscheck — 1 operation(s) for accept lite.
- **Crosscheck acceptance test API** — The acceptance test API from Crosscheck — 2 operation(s) for acceptance test.
- **Crosscheck Checks API** — The Checks API from Crosscheck — 1 operation(s) for checks.
- **Crosscheck draft review API** — The draft review API from Crosscheck — 1 operation(s) for draft review.
- **Crosscheck Quote API** — The Quote API from Crosscheck — 1 operation(s) for quote.
- **Crosscheck Receipts API** — The Receipts API from Crosscheck — 1 operation(s) for receipts.
- **Crosscheck Sellercheck API** — The Sellercheck API from Crosscheck — 2 operation(s) for sellercheck.
- **Crosscheck Sellerwatch API** — The Sellerwatch API from Crosscheck — 1 operation(s) for sellerwatch.
- **Crosscheck skill security API** — The skill security API from Crosscheck — 2 operation(s) for skill security.
- **Crosscheck Skillcheck API** — The Skillcheck API from Crosscheck — 2 operation(s) for skillcheck.
- **Crosscheck Skillcheck Lite API** — The Skillcheck Lite API from Crosscheck — 1 operation(s) for skillcheck lite.
- **Crosscheck W API** — The W API from Crosscheck — 1 operation(s) for w.
- **Crosscheck x402 seller API** — The x402 seller API from Crosscheck — 2 operation(s) for x402 seller.

## Agentic access (1)

- **Crosscheckapi Com Agentic Access** — 19 operations · 15 acting · 4 human-in-the-loop

## Security (2)

- **Crosscheckapi Com Authentication** — http · 1 scheme
- **Crosscheckapi Com Domain Security** — TLSv1.3 · DMARC

## Tags

Artificial Intelligence, Verification, Payments, x402, Blockchain

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/crosscheckapi-com/). Scores are computed from the provider's own public artifacts under a published rubric.