Exactlane Preflight

The check before the call.

Caller-specific static compatibility evidence for autonomous agents evaluating an MCP capability before relying on it.

Exactlane helps an agent answer: does this exact declared MCP capability fit my bounded workflow requirements? before integration.

Problem it addresses

Before an autonomous agent depends on an external MCP capability, it often needs a pre-integration compatibility check:

• compare a caller-provided capability snapshot to caller-specific requirements;
• obtain static compatibility evidence (not live probing);
• keep the operational decision with the caller.

Exactlane Preflight is a Phase 0A public service for that workflow.

Use when

An agent has a caller-provided MCP capability snapshot and needs to determine whether that exact declared capability fits its own bounded workflow requirements.

Does not prove

• live availability
• full MCP conformance
• business-result correctness
• provider trust
• security certification
• payment success

Exactlane Preflight is primarily a REST evidence service with a thin remote MCP adapter at /mcp. It is not an A2A agent, marketplace, or certification authority.

Live machine contract

Canonical public discovery origin:

• Service root: https://exactlane.dev/
• Manifest: https://exactlane.dev/.well-known/exactlane.json
• OpenAPI: https://exactlane.dev/openapi.json
• Agent discovery text: https://exactlane.dev/llms.txt
• Sitemap: https://exactlane.dev/sitemap.xml
• Remote MCP: https://exactlane.dev/mcp

Temporary migration hostname (compatibility; not canonical):

• https://preflight.happybitemochi.com/

Scope of this repository

Public discovery anchor only.

Source implementation is not part of this public discovery repository.

Official MCP Registry

• Server name: dev.exactlane/preflight
• Version: 0.1.0
• Remote: Streamable HTTP https://exactlane.dev/mcp
• Registry search: https://registry.modelcontextprotocol.io/v0.1/servers?search=exactlane

Primary tool: check_mcp_capability (adapter over Exactlane Phase 0A; no live probing; caller owns CONTINUE/UPDATE/HOLD).