Head to head
Castor vs Semiotic
Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.
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Castor for Confluence Data Center — MCP server bridging Confluence DC with AI agents
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Verified React chart generation: select, validate, repair, render, and inspect charts through MCP.
Full listingThe short version
Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. The safety scan favours Semiotic (82/100 against 55). Semiotic is hosted and callable through the gateway; Castor runs on your own machine. Semiotic has noticeably more public adoption.
| Castor | Semiotic | |
|---|---|---|
| User rating | No reviews yet | No reviews yet |
| Safety grade | C55/100 | B82/100 |
| Adoption | New | Widely used |
| GitHub stars | – | 2.7k |
| Downloads / week | 165 | 5.8k |
| Runs where | Your machine (local) | Hosted (remote) |
| Gateway-ready | No | Yes |
| Tools | — | 5 |
| Write actions | — | 1 |
| Price per call | Free | Free |
| Licence | MIT | Apache-2.0 |
| Last release | — | 2026-09-19 |
| Category | Everything else | Everything else |