Open source Self-hostable MCP support free
In these stacks
LicenseApache-2.0
PriceFree
UsageBYOK
Model supportclaude, gpt, local, byok
Languagesrust, python
GitHub stars50.6k
Last activity2026-07-03
VerifiedThu Jun 25 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Verified byseed
An extensible open-source agent from Block built around MCP tool-use, designed to automate engineering tasks locally.
Strengths
- MCP-native extensibility
- Runs fully local
Tradeoffs
- Smaller community than Aider/Cline
- Rust extension model has a learning curve
Covers
MCP support