toolgrep / MCP servers / FiatDock
Alternatives to FiatDock
FiatDock: MCP marketplace where AI agents buy services per call in USDC over x402. 8 products similar to FiatDock, 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.
- Fatstack
Pay-per-call tools for AI agents
- agentsvc.io
Pay-per-call API marketplace for AI agents with 127 services settled in USDC via x402
- PayAPI Market
x402 marketplace for AI agents
- minia2a.uk
Marketplace of 1,600+ pay-per-call API services for AI agents, settled in USDC on Base via the x402 protocol.
- ISHOB
Intelligent Service Hub for Autonomous Bots
- Agentropolis
Search engine for agent tools: MCP servers, x402/MPP paid APIs, A2A agents and kits with payment-verified trust.
- nohumans.directory
A machine-readable registry of paid x402 APIs and datasets, verified by paying endpoints with real USDC and publishing purchase outcomes.
- Vextorium
Pay-per-call data APIs for AI agents over x402
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| FiatDock | Freemium | yes | yes | yes | yes | yes |
| Fatstack | Usage-based · from $0.0005 per call | — | yes | yes | yes | — |
| agentsvc.io | Usage-based · from $0.002 per call | yes | yes | yes | no | — |
| PayAPI Market | Free | yes | yes | yes | yes | — |
| minia2a.uk | Usage-based | yes | yes | yes | no | — |
| ISHOB | Usage-based · from $0.0001 per call | yes | yes | yes | — | — |
| Agentropolis | Free | yes | yes | yes | yes | — |
| nohumans.directory | Free | yes | yes | yes | — | — |
| Vextorium | Usage-based · from $0.001 | no | yes | yes | no | 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/fiatdock/alternatives