About Json Query Language
Json Query Language is an MCP server published by christosgkoros in the Documentation category: a JSON-encoded, SQL-flavoured predicate language described by a single JSON Schema — $ref it from an OpenAPI document, or inline it into an MCP tool's inputSchema. One filter grammar for every search endpoint in an API.
The repository has 2 stars and 0 forks, with the last commit a month ago. Recent commit activity is the strongest signal that reported issues will get attention.
Install
From source
git clone https://github.com/christosgkoros/json-query-languageThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
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Releases
v0.6.2v0.6.2 — close the gaps the last audit did not look for · 14 Sep 2026A packaging release, again.** The schema is still byte-identical and the `$id` still names `v0.4.0`. 0.6.1 fixed the defects an audit of the package found; this one fixes the ones that audit had not looked for, and closes the coverage gaps…
v0.6.1v0.6.1 — make the package work the way 0.6.0 said it did · 14 Sep 2026A packaging release.** No change to the grammar, the schema or the semantics of evaluation: `open-predicate-schema.json` is byte-identical to 0.6.0, and the `$id` still names `v0.4.0`. What changed is that the package now works the way…
v0.6.0v0.6.0 — the project is OpenPredicate · 13 Sep 2026A naming release.** No change to the grammar or to the semantics of evaluation: `open-predicate-schema.json` is byte-identical to 0.5.0 apart from three lines — its `$id`, its `title` and its `$comment` — and the `$id` still names…
v0.5.0v0.5.0 — a generator a provider can point at their own API · 13 Sep 2026A tooling release.** No change to the grammar or to the semantics of evaluation: `query-language-schema.json` is byte-identical to 0.4.0 apart from its root `description`, and its `$id` still names `v0.4.0`, because the `$id` version…
v0.4.0v0.4.0 — one array quantifier family, and an escape hatch for UNKNOWN · 9 Sep 2026Breaking.** The `$id` is now `…/v0.4.0/query-language-schema.json`. This release resolves the three operator overlaps that an external review and this repository's own `experiments/filter-to-sql` flagged independently; the design and the…