toolgrep / MCP servers / 402MCP.org
Alternatives to 402MCP.org
402MCP.org: The Open Registry for Agentic Commerce & HTTP 402. 8 products similar to 402MCP.org, compared on pricing, free tier, API, MCP server, SDK and open source. 6 of 8 have a free tier, 8 of 8 have an API, 8 of 8 offer an MCP server.
- Agentropolis
Search engine for agent tools: MCP servers, x402/MPP paid APIs, A2A agents and kits with payment-verified trust.
- PayAPI Market
x402 marketplace for AI agents
- agentsvc.io
Pay-per-call API marketplace for AI agents with 127 services settled in USDC via x402
- Agent Margin Router
Data infrastructure for autonomous AI agents
- Agent Nexus
A machine-readable registry of APIs, MCP servers and CLIs that AI agents call, with live health checks and reliability scores.
- Ausca
Pay-per-call APIs and MCP services for agents
- Fatstack
Pay-per-call tools for AI agents
- AgentIndex
Directory of open-source AI agents, MCP servers, agent frameworks and Cursor rules, updated daily
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| 402MCP.org | Free | yes | yes | yes | no | — |
| Agentropolis | Free | yes | yes | yes | yes | — |
| PayAPI Market | Free | yes | yes | yes | yes | — |
| agentsvc.io | Usage-based · from $0.002 per call | yes | yes | yes | no | — |
| Agent Margin Router | Freemium · from $0.005 per request | yes | yes | yes | yes | — |
| Agent Nexus | Freemium · from $0 | yes | yes | yes | no | — |
| Ausca | Usage-based | — | yes | yes | yes | — |
| Fatstack | Usage-based · from $0.0005 per call | — | yes | yes | yes | — |
| AgentIndex | Free | yes | yes | yes | no | — |
Facts come from each product's own website, or from its verified owner when they have edited the listing. Each product page shows when it was last verified and how it was extracted. Similarity comes from the products' descriptions.
API
curl https://toolgrep.com/api/products/402mcp-org/alternatives