Observed arrival · 2026-09-14

PLAS: One API for the Public Library Stack

plasapi.info Observed source

Editorial interest 84/100 Selection signal · not a rating of the site

PLAS is an open, vendor-independent API specification intended to give library systems and digital products a shared interface for library data and functions.

Landing page captured for the 2026-09-14 issue.

Field notes

PLAS separates the library system’s Provider API from the product-facing Vendor API, with Search and Content offered as Provider profiles. The visible reference lists Provider API v0.6.5 with 22 groups, 54 operations, and 379 schemas, while Vendor API v0.6.5 lists 3 groups, 3 operations, and 152 schemas. Its documentation is generated from OpenAPI files and is intended to sit above existing systems such as Bibliofil, Cicero, or Koha rather than replace them.

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✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

◉HumanPersonal, local, civic, or handmade

ƒJavaScriptBrowser-side code central

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