# Federal Administrative Procedure Sourcebook API

**Canonical:** https://apis.io/apis/administrative-conference-of-the-united-states/federal-administrative-procedure-sourcebook/  
**Provider:** Administrative Conference of the United States — https://apis.io/providers/administrative-conference-of-the-united-states/  
**Base URL:** https://sourcebook.acus.gov/api.php  
**Documentation:** https://sourcebook.acus.gov/wiki/Federal_Administrative_Procedure_Sourcebook

Federal Administrative Procedure Sourcebook API is one of 3 APIs that [Administrative Conference of the United States](https://apis.io/providers/administrative-conference-of-the-united-states/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Administrative Law, Administrative Procedure Act, Legal Reference, Open Data, and Federal-Government. The published artifact set on APIs.io includes an API reference, API documentation, authentication docs, and rate-limit docs.

The Federal Administrative Procedure Sourcebook is ACUS's reference wiki covering the core statutes of U.S. federal administrative procedure — the Administrative Procedure Act, FOIA, the Privacy Act, the Government in the Sunshine Act, FACA, the Negotiated Rulemaking Act, the Regulatory Flexibility Act, the Paperwork Reduction Act, the Equal Access to Justice Act and more. It runs on MediaWiki 1.43.0 and exposes both the MediaWiki Action API at /api.php and the MediaWiki REST API v1 at /rest.php/v1. Both answer anonymously with no API key, account or quota. This is the only programmatically callable interface ACUS operates. Note that every acus.gov host returns HTTP 403 to non-browser user agents, so a client must send a browser-like User-Agent header.

## Machine-readable artifacts (7)

- **APIReference** — https://sourcebook.acus.gov/api.php
- **Documentation** — https://sourcebook.acus.gov/wiki/Federal_Administrative_Procedure_Sourcebook
- **Examples** — https://raw.githubusercontent.com/api-evangelist/administrative-conference-of-the-united-states/refs/heads/main/examples/administrative-conference-of-the-united-states-sourcebook-api-examples.yml
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/administrative-conference-of-the-united-states/refs/heads/main/authentication/administrative-conference-of-the-united-states-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/administrative-conference-of-the-united-states/refs/heads/main/conventions/administrative-conference-of-the-united-states-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/administrative-conference-of-the-united-states/refs/heads/main/errors/administrative-conference-of-the-united-states-problem-types.yml
- **RateLimits** — https://raw.githubusercontent.com/api-evangelist/administrative-conference-of-the-united-states/refs/heads/main/rate-limits/administrative-conference-of-the-united-states-rate-limits.yml

## Other Administrative Conference of the United States APIs (2)

- [Equal Access to Justice Act (EAJA) Database](https://apis.io/apis/administrative-conference-of-the-united-states/eaja-database/)
- [Federal Administrative Adjudication Database](https://apis.io/apis/administrative-conference-of-the-united-states/federal-administrative-adjudication-database/)

## Tags

Administrative Law, Administrative Procedure Act, Legal Reference, Open Data, Federal-Government, MediaWiki

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/administrative-conference-of-the-united-states/federal-administrative-procedure-sourcebook/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/administrative-conference-of-the-united-states/.