# Crossary – AI-assisted field mapping that outputs signed Excel files > Source: > Published: 2026-06-22 01:25:56+00:00 # A wrong mapping is worse than an honest gap. Crossary turns messy source and target specs into a reviewed, implementation-ready mapping workbook — every row backed by its exact source quote, every uncertain one flagged for you. It maps the spec, not the data. Nothing moves until you sign off. 3 integration credits free · no card · your mappings never train a shared model. ## If you hand-build the mapping sheet someone else implements — this is for you. ## A strict five-stage pipeline. Then a round-trip. Upload to signed workbook in five steps — and back again, without losing a note. Drop in your source + target specs. If a file can't be fully read, it tells you exactly how much it dropped. xlsx · pdf · csv · json · xml · xsd · sql · yaml A field inventory is extracted from both sides — every path, every column — so you map against the real surface. For each target: a proposed source, type, verbatim evidence, reasoning, and confidence. Abstains when unsure. A deterministic check for structural & cardinality blockers. Zero AI, zero spend. A signed .xlsx your team can open anywhere — that reconciles cleanly when it comes back. ## Six things every row tells you. Nothing taken on faith. Open any proposed mapping and you see exactly why the AI suggested it — and how sure it says it is. The evidence, not the confidence, is the product. `to_date(S_SHIP_DATE)` ## The honest gap it won't guess — and the round-trip that holds. The real sample, end to end: where the AI withdraws a tempting guess and asks instead, and where your edits survive a trip through Excel and back. When it isn't sure, it says so. confidence: none · no guess ## Every mapping you approve makes the next one faster. Sign off an export and your approved field-pairs become a private, workspace-scoped library. On the next run it gap-fills only the targets the AI abstained on — inserted as suggestions you still review, never auto-applied. - Scoped to your workspace — it never crosses to another. - Captures the decision only — no evidence, values, or client data. - It never trains a shared model. ## Trust isn't asked for here — it's enforced in code, and written down. If more than ~10% of a source is dropped during ingestion, it stays flagged — in the app and on the export cover sheet. A partial read is never reported as complete. Validation is deterministic and checks structure and cardinality only. It does not claim semantic correctness — and the UI says exactly that. On re-import it applies what matched, skips what changed underneath you, and turns every reviewer note into a tracked question. Nothing is silently overwritten. Every AI response is checked against a strict schema before it can touch your data. A malformed result is thrown away, never persisted. Crossary maps from your source and target specs — schemas, dictionaries, guides. It's built to work from the spec, not your data, so in most cases there's no need to upload production records or PII. ## Start free. Pay for AI runs, never for reviewing. Reviewing, validating, exporting, and round-trip re-import don't call the AI — so they're always free, on every plan. For your first real integration. [Start free](/register) - 3 integration credits - Free review, validate & export - Round-trip re-import - Mapping Memory included - 1 workspace · up to 2 members ~20 integrations a month. [Start with Pro](/register) - Everything in Free - ~20 integration credits / mo - Higher-accuracy pass - Unused credits roll over - 3 workspaces · up to 3 members ~75 integrations a month. [Start with Team](/register) - Everything in Pro - ~75 integration credits / mo - Unlimited workspaces · up to 10 members - Shared mapping library Plus applicable taxes. Run out? Existing work is never blocked — review, validate, export & re-import stay free. Unused credits roll over, you can buy more anytime, or upgrade. Only new AI runs pause. ## The honest answers, before you sign up. Roughly one standard integration. Higher Accuracy and unusually large or heavily re-run jobs use more — and you can see what each integration cost. Reviewing, validating, exporting, and round-trip re-import. They don't call the AI, so they never use a credit. Every plan gets the same core mapping quality. Higher Accuracy — an optional, heavier pass — is on paid plans; Mapping Memory is included on every plan. Existing work is never blocked — review, validate, export and re-import stay free. Unused credits roll over, you can buy more anytime, or upgrade. Only new AI runs pause. Click subscribe on the plan you want — secure checkout, and your plan activates immediately. No. Mapping Memory is scoped to your workspace and never crosses it; no shared model learns from your mappings. ## Map your first integration in the next ten minutes. Upload a source and a target spec. Get back a reviewed, evidence-backed workbook — with every honest gap flagged for you. 3 integration credits free · no card · no lock-in.