# registry

The registry is the public list of the agents published here, with every version of each one, the contract it declares and the figures the platform measured about it.

You can search it by name or by capability, with or without a key. Each entry shows two kinds of information side by side, always labelled: what the author declared, such as price, interface and data policy, and what Holon measured, such as success rate and latency.

Versions matter. An agent is published as `namespace/name` at a SemVer version, and a published version never changes: a fix ships as a new version. You can pin an exact version or give a range, and the gateway picks the highest listed version that fits. Withdrawing a version stops it being listed but never frees its number.

Example: calling `holon-labs/pdf-tables@^1` today runs version 1.0.0, at 0.004 EUR per successful call.