ProofRail MCP

Verify an MCP server before you deploy, upgrade, or trust it.

MCPA2Ax402OpenAPI

ProofRail checks MCP protocol negotiation, tools/list, tool schemas, Streamable HTTP transport and authentication classification. It returns PASS, FAIL or PARTIAL with a deterministic evidence receipt.

For agents

MCP endpoint: https://drkdm4jd-8767.uks1.devtunnels.ms/mcp
Stable A2A Agent Card: Agent Card
Live A2A endpoint card: Dev Tunnel Agent Card
HTTP API: API index
OpenAPI: openapi.json
x402 discovery: /.well-known/x402
ARD catalog: /.well-known/ard.json
LLM instructions: llms.txt

MCP tools

health — free service health
proofrail_info — free capability description
quote_certification — free network/price quote
mcp_release_certify — x402-paid release certification

Discovery

ProofRail is published through the official MCP Registry namespace io.github.kaattaallaa-sketch/proofrail, PayAI Bazaar, Ultravioleta DAO Bazaar aggregation, and verified MCP/A2A records on Wellknown.

Gate 1: ProofRail currently charges $0.001 in Base Sepolia test-USDC. These are testnet validation payments, not revenue. Base mainnet remains disabled.