API Tools is a local-first OpenAPI workbench. Version 0.1.0 parses bounded JSON or YAML OpenAPI 3.0/3.1 descriptions, navigates operations, resolves $ref values from explicitly supplied local files, inventories security schemes, generates schema/request/response examples and inert client command text, compares revisions, and summarizes saved HTTP exchanges or HAR 1.2 files.

It never executes HTTP, follows a URL, resolves a remote reference, stores a credential or loads an external asset. Generated curl, Fetch and Python snippets are text for review and may reproduce untrusted description values safely quoted for their target syntax.

Development and release

Requires Node.js 22+ and npm 11+.

npm ci
npm run check
npm run test:browser
npm run release:artifact

The release command writes deterministic release/api-tools-0.1.0.zip and a SHA-256 sidecar. Relative assets are tested at /deep/nested/api/.

v0.1 boundary

JSON/YAML files up to 4 MiB each, 20 files/16 MiB per selected workspace, depth 64, 100,000 values, 50 YAML aliases, 2,000 operations;
focused OpenAPI identity/info/paths checks and remote-reference rejection;
fragment/relative-file JSON Pointer resolution with missing/cycle reports;
bounded sample generation for common schema composition and scalar formats;
path/query/request/response examples and inert curl/Fetch/Python output;
security scheme inventory, conservative operation compatibility report;
HAR or raw saved-exchange summary without rendering bodies or secrets.

This is not a complete OpenAPI/JSON Schema validator, code generator, API client, proxy or security scanner. See the documented limitations and review generated values before use. Licensed under GPL-3.0-or-later.