# API reference

Source: https://plas.redia.dk/en/apis/

PLAS is not one API but four — and they are not siblings. Two are entry points: Provider is what the library system exposes, Vendor is what the product exposes back. The other two are profiles of Provider that can be implemented on their own.

## Provider API

The interface a library system exposes so that library products can read and write patrons, loans, reservations and holdings.

v0.6.5 · 22 groups · 54 operations · 43 paths · 379 schemas
Source: https://plas.redia.dk/en/provider/v0.6.5/

### Search API

The read-only discovery interface. Search and retrieve works, publications, agents and suggestions through one query language.

v0.6.5 · 6 groups · 8 operations · 8 paths · 147 schemas
Profile of Provider API: 8 of the 54 operations in Provider API
Source: https://plas.redia.dk/en/search/v0.6.5/

### Content API

The events a library plans and publishes, with scheduling, location, audiences, pricing and the series they belong to.

v0.6.5 · 3 groups · 4 operations · 4 paths · 48 schemas
Profile of Provider API: 4 of the 54 operations in Provider API
Source: https://plas.redia.dk/en/content/v0.6.5/

## Vendor API

The other direction. Where the Provider API is what the library system exposes, this is what the library product exposes back.

v0.6.5 · 3 groups · 3 operations · 3 paths · 152 schemas
Source: https://plas.redia.dk/en/vendor/v0.6.5/