US federal agency directory — the Federal Register's agency slugs, names, short
US federal agency directory — the Federal Register's agency slugs, names, short names and parent-child links, searchable by substring. Use to find the slug an agency filter needs, e.g. environmental-protection-agency for the EPA.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
648 msmedian answer time
$0.005listed price per call
$0.005price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://us-regulations.use.x402atlas.com/agencies
| Category | Everything else |
|---|---|
| Provider host | us-regulations.use.x402atlas.com |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.005 | 648 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"query": "environmental"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"query": {
"description": "Substring of slug, name or short name, case-insensitive",
"maxLength": 200,
"type": "string"
}
},
"required": [
"query"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"agencies": {
"description": "Sorted by name",
"items": {
"additionalProperties": false,
"properties": {
"children": {
"description": "Sub-agency slugs",
"items": {
"type": "string"
},
"type": "array"
},
"name": {
"type": "string"
},
"parent_slug": {
"description": "Empty for top-level agencies",
"type": "string"
},
"short_name": {
"description": "Empty when the venue has none",
"type": "string"
},
"slug": {
"description": "Pass to the agency filter",
"type": "string"
}
},
"required": [
"slug",
"name",
"short_name",
"parent_slug",
"children"
],
"type": "object"
},
"type": "array"
},
"as_of": {
"description": "Retrieval time, UTC",
"format": "date-time",
"type": "string"
},
"caveat": {
"description": "Fixed interpretation note",
"type": "string"
},
"count": {
"type": "integer"
},
"modified": {
"description": "Always true: fields are normalized, not the official record",
"type": "boolean"
},
"note": {
"description": "Present only on a sample or empty response",
"type": "string"
},
"query": {
"type": "string"
},
"source": {
"additionalProperties": false,
"properties": {
"citation": {
"type": "string"
},
"name": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"name",
"url",
"citation"
],
"type": "object"
}
},
"required": [
"as_of",
"source",
"caveat",
"modified",
"query",
"count",
"agencies"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}