toolgrep / MCP servers / Fatstack
Alternatives to Fatstack
Fatstack: Pay-per-call tools for AI agents. 8 products similar to Fatstack, compared on pricing, free tier, API, MCP server, SDK and open source. 7 of 8 have a free tier, 8 of 8 have an API, 8 of 8 offer an MCP server, 1 of 8 is open source.
- 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.
- agentsvc.io
Pay-per-call API marketplace for AI agents with 127 services settled in USDC via x402
- FiatDock
MCP marketplace where AI agents buy services per call in USDC over x402
- AgentBIT
Pay-per-call API tools for AI agents, monetized with the x402 protocol
- ISHOB
Intelligent Service Hub for Autonomous Bots
- Vextorium
Pay-per-call data APIs for AI agents over x402
- Superpowers
APIs and tools for AI agents, one key
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Fatstack | Usage-based · from $0.0005 per call | — | yes | yes | yes | — |
| PayAPI Market | Free | yes | yes | yes | yes | — |
| minia2a.uk | Usage-based | yes | yes | yes | no | — |
| agentsvc.io | Usage-based · from $0.002 per call | yes | yes | yes | no | — |
| FiatDock | Freemium | yes | yes | yes | yes | yes |
| AgentBIT | Usage-based | yes | yes | yes | no | — |
| ISHOB | Usage-based · from $0.0001 per call | yes | yes | yes | — | — |
| Vextorium | Usage-based · from $0.001 | no | yes | yes | no | no |
| Superpowers | Usage-based | yes | 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
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