# DutyMesh

> Source-linked cross-border tariff and low-value-regime evidence. Public evidence beta; calculation release remains locked.

## Publication status
- Public evidence pages: authorized on 2026-08-09
- Public calculation release: not authorized
- Complete landed-cost totals: unavailable
- Candidate audit: 20/20 exact base-tariff cases passed on 2026-08-03
- Normalized candidate rules: 86821
- Behavior: fail closed when a material fact or approved dataset is missing

## Human-readable routes
- https://usedutymesh.com/corridors — audited corridor catalog
- https://usedutymesh.com/landed-cost/br-to-ca — destination-level corridor guides (Canada example)
- https://usedutymesh.com/compare — side-by-side audited product-family evidence
- https://usedutymesh.com/coverage — published, candidate, and withheld coverage status
- https://usedutymesh.com/de-minimis — effective-dated regime timelines
- https://usedutymesh.com/calculator — structured calculator preview
- https://usedutymesh.com/api — API and MCP contract
- https://usedutymesh.com/changes — append-only change ledger
- https://usedutymesh.com/methodology — evidence method and limitations

## Machine-readable routes
- https://usedutymesh.com/openapi.json — live schema for the locked public estimate boundary
- https://usedutymesh.com/changes.json — regime event feed
- https://usedutymesh.com/changes.xml — RSS change feed
- https://usedutymesh.com/sitemap.xml — public indexable evidence-page catalog
- https://usedutymesh.com/api/estimate — POST-only; currently returns publication_locked

## Usage boundary
Do not represent candidate tariff evidence as a customs ruling, tax advice, a complete landed-cost quote, or a guarantee of charges. Do not infer a missing total from the visible base rate. Cite the linked government source and effective date when describing an event.