toolgrep / APIs & backend / APEX
Alternatives to APEX
APEX: Pay-per-call data APIs for AI agents over x402, plus a free X1 faucet and on-chain tooling. 8 products similar to APEX, compared on pricing, free tier, API, MCP server, SDK and open source. 5 of 8 have a free tier, 8 of 8 have an API, 8 of 8 offer an MCP server.
- AgentBIT
Pay-per-call API tools for AI agents, monetized with the x402 protocol
- agentsvc.io
Pay-per-call API marketplace for AI agents with 127 services settled in USDC via x402
- Vextorium
Pay-per-call data APIs for AI agents over x402
- PayAPI Market
x402 marketplace for AI agents
- Fatstack
Pay-per-call tools 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
- Ausca
Pay-per-call APIs and MCP services for agents
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| APEX | Usage-based · from $0.001 | yes | yes | yes | yes | — |
| AgentBIT | Usage-based | yes | yes | yes | no | — |
| agentsvc.io | Usage-based · from $0.002 per call | yes | yes | yes | no | — |
| Vextorium | Usage-based · from $0.001 | no | yes | yes | no | no |
| PayAPI Market | Free | yes | yes | yes | yes | — |
| Fatstack | Usage-based · from $0.0005 per call | — | yes | yes | yes | — |
| minia2a.uk | Usage-based | yes | yes | yes | no | — |
| ISHOB | Usage-based · from $0.0001 per call | yes | yes | yes | — | — |
| Ausca | Usage-based | — | yes | yes | yes | — |
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/apex/alternatives