index-query-engine
index-query-engine is a Databases & SQL skill for AI agents, published by cardstack in the boxel repository on GitHub. Skillspace rates index-query-engine D (64/100) and it passed the safety scan; the rating is based on static analysis only.
Architecture of the index query engine (`packages/runtime-common/index-query-engine.ts`) — the two-pass pipeline that compiles a `Query` filter tree into SQL that runs identically on Postgres and SQLite, plus the invariants every change must preserve (deferred expression nodes, cardinality-driven json_tree confinement, filter polarity, the shared table-valued alias semantics, synthetic search-doc keys, and the client-side parity contract with `instance-filter-matcher.ts`). Use when editing or reviewing the query engine, adding a filter operator or synthetic key, changing how field paths compile, or debugging why a query behaves differently across adapters or between server and local search.
- Grade
- D
- Quality
- 64 / 100
- Safety
- Passed
- GitHub stars
- 23
Unproven: rated by static analysis only, not yet compared head-to-head.
This rating describes the version of the repository we crawled; it may have changed since, so go by its current files.
Our review
- Architecture
- 100 / 100
- Maturity
- Basic: a single SKILL.md
- Security scan
- Low-risk patterns
- License
- MIT
- Adoption
- Adopted by 0 other repositories, in 0 collections
What the scanner flagged
- mentions secrets in text
Not checked yet
- Category is a classifier prediction; no model has read this skill yet
- Not judged on the rubric yet (not a contender in its category)
- No blind task eval yet
- Scope (portable / vendor / repo-internal) not assessed; only the top of each category is read for scope
- Sibling files (scripts, references) not fetched; security scan covers SKILL.md only
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