OpenPredicate — The filter grammar for search APIs
openpredicate.tech
LaunchIndex first observed OpenPredicate — The filter grammar for search APIs (openpredicate.tech) live on 23 October 2026. View its launch screenshot, category, and verification evidence.
A launch record built from evidence.
OpenPredicate — The filter grammar for search APIs (openpredicate.tech) was first observed live on 23 October 2026.
OpenPredicate provides a JSON Schema and guide for a reusable filter grammar for search APIs, with specifications, playgrounds, and examples.
Its profile is classified as Documentation within Technology / Developer tools.
What the launch signal contained.
- First observed live
- Previous state
- No prior non-live observation
- Last verified
- Canonical host
- openpredicate.tech
- Category
- Technology / Developer tools
- Website type
- Documentation
- Observed title
- OpenPredicate — The filter grammar for search APIs
- Observed description
- Design a search API once. OpenPredicate is one JSON Schema for the filter half of any search endpoint — $ref it from an OpenAPI document, or inline it as an MCP tool's inputSchema, and every search endpoint speaks the same grammar.
- Detected technologies
- None detected
- Screenshot captured
- Evidence source
- Browser observation · Local
- Evidence confidence
- 93%
- HTTP status
- 200
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