# EPA Air Quality & Emissions Compliance Digest

> EPA Air Quality & Emissions Compliance Digest is a paid API for AI agents from oracles-production.up.railway.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Returns an LLM-generated brief summarizing the most important EPA air quality and emissions regulatory changes within a specified time window, with deadlines highlighted.

## Facts

- Endpoint: GET https://oracles-production.up.railway.app/v1/reg-epa-air/brief
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/epa-air-quality-emissions-compliance-digest-435f8318
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E4467FxMxKExm7VxrtLC5

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability epa-air-quality-emissions-compliance-digest-435f8318
```

Example prompt: Give me a quick compliance brief on EPA air quality and emissions rules that have come out since January 1, 2025 — just the ones that actually matter, with any deadlines called out.

## When to prefer this

Use this endpoint when you need a concise, human-readable executive summary of EPA air quality and emissions rules rather than raw rule listings. Prefer it over raw Federal Register endpoints when the user wants curated insights with deadlines called out, not a firehose of documents. Best for compliance officers, legal teams, or automated monitoring workflows that need actionable digests, not full rule text.

## Known failure modes

- No relevant changes found in the window — brief may be empty or minimal
- Invalid 'since' datetime format returns a 400-style error
- Payment not processed (x402 protocol) results in 402 Payment Required
- Upstream Federal Register data unavailable causes generation failure
- LLM generation failure may fall back to template-based output

## How this service works

LLM-written compliance digest of the air quality & emissions rules in the window that actually matter (air quality, emission, clean air, ozone, particulate) — issuing agency named, deadlines called out.

## Output

A structured object containing: a 'brief' string with LLM-written prose summarizing the most relevant EPA air quality and emissions regulatory changes and their deadlines; a 'generatedBy' field indicating 'llm' or 'template'; and a 'basedOnChanges' integer showing how many Federal Register changes were analyzed to produce the digest.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "since": {
       "type": "string",
       "format": "date-time",
       "description": "Window start (default: last 30 days)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "brief": {
       "type": "string"
      },
      "generatedBy": {
       "enum": [
        "llm",
        "template"
       ],
       "type": "string"
      },
      "basedOnChanges": {
       "type": "integer"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/epa-air-quality-emissions-compliance-digest-435f8318/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from oracles-production.up.railway.app](https://www.zero.xyz/host/oracles-production.up.railway.app/llms.txt)