toolgrep / MCP servers / Blocks
Alternatives to Blocks
Blocks: MCP server connecting AI agents to your training calendar, rides and a sourced sports-science base. 8 products similar to Blocks, 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.
- TrainZilla MCP Server
Connect your coaching data to an AI agent via a hosted MCP server
- Unblocked MCP Server
MCP server that gives AI agents shared context from an organization's code, conversations, issues, docs, and production systems
- MCP Charts
The MCP for MCPs
- A2APark
Public behavior lab for AI agents
- Stele
Shared, persistent project memory for AI coding agents
- Reps: Gym Workout Log
Gym workout log for iPhone and Android that connects to ChatGPT and Claude over MCP
- Routebase MCP Server
MCP server that lets AI agents design, test, and publish OpenAPI specs under your team's permissions
- Zenable
AI Guardrails That Clean Up Sloppy AI Code
Side by side
| Product | Pricing | Free tier | API | MCP server | SDK | Open source |
|---|---|---|---|---|---|---|
| Blocks | Freemium · from $59 | yes | yes | yes | — | no |
| TrainZilla MCP Server | Freemium | yes | yes | yes | no | yes |
| Unblocked MCP Server | Freemium · from 29 | no | yes | yes | no | no |
| MCP Charts | Free | yes | yes | yes | — | — |
| A2APark | Free | yes | yes | yes | no | — |
| Stele | Freemium · from $0 | yes | yes | yes | yes | no |
| Reps: Gym Workout Log | Free | yes | yes | yes | no | no |
| Routebase MCP Server | Freemium · from $0 | yes | yes | yes | no | no |
| Zenable | Freemium · from $99/user/month (Professional, billed annually) | 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
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