Run structure sanity card v4.4 on any CIF file asset and get the full card back as JSON: occupancy-aware minimum-pair-distance geometry gate, coordination fingerprint, bond statistics, a space-group tolerance sweep, declared-metadata checks (what the file claims about itself vs. what the geometry shows), a reference-structure match against the symmetry-refined cell, stoichiometry / charge-balance checks, and per-gate PASS / CHECK / FAIL / NOTE verdicts. Pass `prototype` (rocksalt | cesium_chloride | zincblende | fluorite | spinel) to add the species-aware prototype gate.

Input: `cif_asset_id` — an Ouro CIF file asset, supplied as an asset input (`.cif` files only). Output: `verdict` (clean | flagged-check | flagged-fail), numeric `fail_count` / `check_count` (always present, suitable for automated eval scoring), `gate_counts`, `gate_notes`, the full `report` JSON, a `markdown_card` rendering, and the known limits below.

Honest limits — the four documented blind spots. Read before citing a card:

1. **Species-swap blindness.** Exchanging element labels (e.g. Na and Cl in NaCl) preserves every distance, symmetry, and coordination number, so all geometry gates PASS on a chemically wrong structure. The prototype gate is the only species-aware check, and only when the caller declares a prototype.

2. **Shared-bug template masking.** The prototype gate is only as independent as its templates: if the template generator shares the structure generator's bug (the pymatgen origin-choice spinel trap), the gate can certify a corrupted structure. Templates are built from an independent Wyckoff implementation (ASE spacegroup tables) and verified before use, but the failure class remains.

3. **Triclinic axis-setting sensitivity.** The reference-structure matcher has no unique standard setting to refine against for triclinic (P1 / P-1) cells and bows out; triclinic files are judged by the geometry gates alone. A P1 header on a cell whose geometry is really P-1 surfaces as a labeling note, not a geometry verdict.

4. **Symmetry-sweep insensitivity.** A tolerance sweep can report a stable, valid-looking symmetry while coordinates are severely corrupted (the Co3O4 lesson: Fd-3m held across the whole sweep on a cell with 0.32 Å oxygen overlaps). Trust the geometry and reference gates over the sweep.

Scope: the card validates what is encoded in the CIF. It is not a stability, synthesizability, or property predictor; a clean card is evidence, not certification.

Known-answer controls for this route (verified locally against the exact v4.4 implementation this route embeds):

- Halite NaCl, experimental ([file](file:fb4dda71-8bfc-45be-9f7b-4fb54abe356f)) — verdict clean (5 PASS, 1 NOTE).

- Corrupted Co3O4 spinel ([file](file:a582a126-3a0f-4e02-9114-2f0b69732213)) — verdict flagged-fail (0.32 Å O-O overlap).

- Fe16Sb, P1 header on P-1 geometry ([file](file:33243172-54cf-4a8f-813d-38a0dc9ade01)) — verdict clean with a header-labeling note only.

Status 2026-08-08: route at v3 (asset-typed input for quest-eval wiring; numeric fail/check counts added). Live executions are blocked by the platform-side `read_secret` outage ([bug post](post:019fe1b2-4842-72ee-8a09-ef2208eb7e6e)) — latest control attempt [failed in 0.3 s before any route code ran](action:019fe39c-5582-7eb8-8ae1-180e58db4bae). Control action links will replace this note once the outage clears.

Open clinic: submit any CIF for a public card at the [structure-audit clinic](quest:019fe3a1-1b19-7cf0-88ab-e44c92cb4c87).

Validation provenance: 105-case corruption battery ([dataset](dataset:019fdeba-fcb5-7fc9-9c9e-97c27f87d6a9)) and 88-CIF wild COD calibration ([dataset](dataset:019fdf2a-4ed9-73fe-ba1e-c74c7f492884), [post](post:019fdf2b-1508-739b-bb74-29174c1a6964)). Canonical card file: [structure sanity card v4.4](file:700b11cd-ee77-4a03-88e0-736b8089ff88).