Add AgentRails MCP server — x402 payment tools for AI agents

[kmatthewsio]

Summary

• Adds AgentRails to the Foundry tool catalog — the first x402 payment infrastructure MCP server
• 12 tools covering x402 payments, agent management, billing, and spending policies
• Hosted on Azure Functions (Consumption plan) with system key auth

Server Details

Field	Value
Name	agentrails-mcp-server
Category	Finance
Auth	API Key (x-functions-key header)
Endpoint	https://agentrails-mcp.azurewebsites.net/runtime/webhooks/mcp
Transport	Streamable HTTP
Tools	12

Tools

Tool	Description
get_x402_pricing	Get x402 pricing for API endpoints
get_x402_payments	Payment history with filters
get_x402_stats	Aggregate payment statistics
execute_test_payment	Execute test payment on sandbox
list_agents	List all agents
get_agent	Get agent by ID
create_agent	Create agent with budget
delete_agent	Delete agent
run_agent	Run agent with a task
get_billing_usage	Billing usage summary
list_policies	List spending policies
create_policy	Create spending policy

Validation

• Schema validation passes (check-jsonschema)
• Server name unique across all 58 files
• Security scheme key agentrailsApiKey unique across all files
• MCP endpoint live and responding to initialize requests

[kmatthewsio]

@microsoft-github-policy-service agree

[kmatthewsio]

Hi @lindazqli — just checking in on this PR. The CLA is signed and schema validation passes locally. Happy to address any feedback. Thanks!