FlowMCP is a framework designed to adapt and expose existing web APIs (e.g., REST interfaces) through a standardized Model Context Protocol (MCP) interface. It allows APIs to be consumed by AI systems in a structured, testable, and semantically consistent way.
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| flowmcp-cli |  |
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| flowmcp-core |  |
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| flowmcp-schemas |  |
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| flowmcp-servers |  |
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- flowmcp-cli: Command-line interface for developing, validating, and managing FlowMCP API schemas
- flowmcp-core: Framework for adapting REST APIs into MCP-compatible tools with schema-driven validation
- flowmcp-schemas: 187+ curated API schemas for AI-driven access to Web3, finance, and public data
- flowmcp-servers: Local (stdio) and remote (HTTP/SSE) servers for deploying FlowMCP schemas
| Title | Updated | Release | Workflow | Coverage | Issues | License |
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| x402-core |  |
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| x402-mcp-middleware |  |
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- x402-core: Multi-chain ERC20 payment layer using EIP-3009 signed authorizations with CAIP-2 network routing
- x402-mcp-middleware: Express middleware for payment-gated MCP servers with automatic routing and JSON-RPC 402 compliance
| Title | Updated | Release | Workflow | Coverage | Issues | License |
|---|---|---|---|---|---|---|
| a2a-agent-validator |  |
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| erc8004-registry-parser |  |
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| mcp-agent-assessment |  |
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| mcp-agent-validator |  |
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| mcp-apps-validator |  |
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| x402-mcp-validator |  |
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- x402-mcp-validator: MCP server validator for x402 payment support, latency measurement, and protocol compliance
- a2a-agent-validator: A2A Protocol Agent Card validator with AP2 (Agent Payments Protocol) and x402 detection — 16 capability categories and 17 entry fields
- erc8004-registry-parser: ERC-8004 on-chain agent registration parser and verifier
- mcp-agent-assessment: Unified assessment pipeline for HTTP, MCP, A2A/AP2, x402, OAuth, MCP Apps, HTML, and ERC-8004
- mcp-apps-validator: MCP Apps UI extension validator for ui:// resources, CSP, permissions, theming, and display modes
- mcp-agent-validator: AgentProbe — web-based multi-protocol validator for HTTP, MCP, A2A/AP2, x402, OAuth, MCP Apps, HTML, and ERC-8004
| Name | URL |
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| AgentProbe | agentprobe.xyz |