# USPS & DEA Prescription Drug Mailing Rules Lookup

> USPS & DEA Prescription Drug Mailing Rules Lookup is a paid API for AI agents from api.healthtravel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).

Retrieves official US regulatory text governing prescription drug mailing, covering USPS Publication 52 §453 and DEA 21 CFR Part 1306, with filtering by source, section, or keyword.

## Facts

- Endpoint: GET https://api.healthtravel-api.workers.dev/api/health/usps-prescription-ship?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/usps-dea-prescription-drug-mailing-rules-lookup-01c1ae3c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vCKPsE3oxRO33aBzSm15M

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 usps-dea-prescription-drug-mailing-rules-lookup-01c1ae3c
```

Example prompt: What does USPS Publication 52 section 453 say about packaging and marking requirements for mailing prescription drugs? Pull the relevant sections from the USPS source only.

## When to prefer this

Choose this endpoint when you need authoritative, citation-backed regulatory text about mailing prescription drugs in the US — specifically USPS Publication 52 §453 and DEA 21 CFR Part 1306. Prefer it over general web search when precise section-level citations are needed, or when building compliance tools, legal research aids, or pharmacy/healthcare agent workflows that must reference official government text rather than summaries.

## Known failure modes

- No sections match the requested keyword query — returns empty results
- Invalid section number format returns no results
- Source enum value outside allowed options (usps/dea/all) causes validation error
- Regulatory text unavailable due to upstream data issues returns an error response

## How this service works

US rules for mailing prescription drugs from the official texts, section by section with citations: USPS Publication 52 section 453 (definitions, mailer responsibility, what may be mailed, packaging and marking) and DEA 21 CFR Part 1306 (who may prescribe and fill, Schedule II-V refills, labeling, online pharmacies, telemedicine). Filter by source or words in the text.

## Output

Returns matching sections of official regulatory text from USPS Publication 52 §453 and/or DEA 21 CFR Part 1306, including section numbers, full text content, and source citations. Results can be filtered to a specific regulatory source (USPS or DEA), a specific section number, or sections containing particular keywords.

## 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": {
      "query": {
       "type": "string",
       "description": "Optional words that must all appear in the section title or text, e.g. packaging, schedule II, refill"
      },
      "source": {
       "enum": [
        "all",
        "usps",
        "dea"
       ],
       "type": "string",
       "description": "usps = Publication 52 §453, dea = 21 CFR Part 1306, all (default)"
      },
      "section": {
       "type": "string",
       "description": "Optional exact section number, e.g. 453.34 or 1306.12"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/usps-dea-prescription-drug-mailing-rules-lookup-01c1ae3c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.healthtravel-api.workers.dev](https://www.zero.xyz/host/api.healthtravel-api.workers.dev/llms.txt)