# Agent Preflight Api API

**Canonical:** https://apis.io/apis/agent-preflight-com/agent-preflight-api-api/  
**Provider:** Agent Preflight — https://apis.io/providers/agent-preflight-com/  
**Base URL:** https://api.agent-preflight.com  
**Documentation:** https://agent-preflight.com/docs

Agent Preflight Api API is one of 2 APIs that [Agent Preflight](https://apis.io/providers/agent-preflight-com/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. The published artifact set on APIs.io includes an OpenAPI specification.

V0.3: V0.1 validates a proposed HTTP body against JSON Schema. POST /v0.2/preflight/tool-call returns allow|block|reuse|defer|advise for a budgeted tool call without executing it. Production charges $0.002 USDC per HTTP POST on Base mainnet (eip155:8453) via x402 when payment env is enabled. MCP and

## Operations (6)

| Method | Path | Summary |
|---|---|---|
| POST | `/check-request` | Validate a proposed HTTP request body |
| POST | `/v0.2/preflight/tool-call` | Decide whether to execute a metered tool call |
| GET | `/health` | Liveness |
| GET | `/openapi.json` | OpenAPI document |
| GET | `/mcp` | MCP HTTP transport |
| POST | `/mcp` | MCP HTTP transport |

## Machine-readable artifacts (1)

- **OpenAPI** — https://artifacts.apis.io/agent-preflight-com/openapi/_original/agent-preflight-com-api-openapi.json

## Other Agent Preflight APIs (1)

- [Agent Preflight API](https://apis.io/apis/agent-preflight-com/agent-preflight-api/)

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