# FDA Investigations Operations Manual API

The manual FDA field investigators follow when they inspect a facility.

The Investigations Operations Manual is the FDA's primary field guidance for inspections, sample collection, and enforcement procedure. The FDA publishes it as a single large document per chapter with no per-section retrieval. This API serves each section verbatim from a structured database.

- Coverage: 546 sections across 10 chapters
- Source: Food and Drug Administration — public-domain US government work
- API root: https://fda-iom-api.canvas-cart.workers.dev
- Machine guide: https://fda-iom-api.canvas-cart.workers.dev/llms.txt
- Record ids: a section id, e.g. "chapter-05--5-1-1"; get it from /search or /chapter/{id}

## Routes

- `GET /search?q=<keywords>&limit=<1-50>` — free
- `GET /chapter/{id}` — free
- `GET /section/{id}` — free
- `GET /section/{id}/full` — paid ($0.01)

## Free search example

https://fda-iom-api.canvas-cart.workers.dev/search?q=credentials&limit=3

## Paid call

Request `/section/{id}/full`. Expect `402 Payment Required` with price $0.01 per section, network eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USDC), payout 0xA40Dadc75B69bEe8325E8089258235213293F8F4. Pay, repeat, receive the record.

Sample paid URL: https://fda-iom-api.canvas-cart.workers.dev/section/chapter-05--5-1-1/full