About Catraca
Catraca is an MCP server published by macmaia in the Agents category: provenance-aware authorisation for LLM agent tool calls. Denies a call when a consequential argument came from untrusted content. Stdlib only.
The repository has 5 stars and 0 forks, with the last commit 19 days ago. Recent commit activity is the strongest signal that reported issues will get attention.
Install
From source
git clone https://github.com/macmaia/catracaThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
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Releases
v0.1.2catraca 0.1.2 · 28 Sep 2026Changed The 0.1.1 change to grouped numbers is withdrawn. It refused a few blocks out of a longer number only when they were passed without spaces, while the same blocks with their spaces were always trusted as whole tokens of the user's…
v0.1.1catraca 0.1.1 · 28 Sep 2026Fixed A number written in groups (an IBAN, a card, a phone number) is now trusted only as the whole run. Before, a few blocks out of the middle or either end, such as `NWBK60161331` from "GB29 NWBK 6016 1331 9268 19", came out trusted,…
v0.1.0catraca 0.1.0 · 25 Sep 2026First public release. Added Labels and channels: an integrity lattice, confidentiality scopes, and channel config in JSON, validated on load. Context registry (mode B): per-window provenance, normalisation and decoded variants, audited…