# ARAKEL FDA Recall Watch

> ARAKEL FDA Recall Watch is a paid API for AI agents from proof.arakelproof.space, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-13).

Monitors FDA enforcement recalls over a date range for a given query (drug, food, device, brand, ingredient, or firm) and returns machine-verifiable signed evidence.

## Facts

- Endpoint: GET https://proof.arakelproof.space/v1/agent/recall-watch?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arakel-fda-recall-watch-c6154d4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eYLfksm7OODndAf-dEFlt

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 arakel-fda-recall-watch-c6154d4f
```

Example prompt: Watch for any new FDA recalls affecting acetaminophen products from the past 7 days and give me machine-signed evidence of what was found.

## When to prefer this

Choose this endpoint when you need machine-verifiable, cryptographically signed evidence of FDA recall status — not just a raw data dump. It is best for autonomous agents that need to prove compliance, audit trails, or tamper-evident recall monitoring over a specific date range. Prefer it over direct openFDA queries when signature verification and structured evidence schemas (arakel.machine-evidence.v2) are required.

## Known failure modes

- Query string missing — returns 400 validation error
- Date range too broad or malformed datetime — returns 400
- No recalls found for query returns result: NOT_OBSERVED (not an error)
- FDA openFDA source unavailable — may return INCONCLUSIVE
- Payment not completed via x402 — returns 402 with payment requirements
- Rate limits or network errors return 5xx

## How this service works

$0.001 OFAC destination-wallet preflight for autonomous agents, plus machine-verifiable official-source evidence over x402 USDC on Base.

## Output

A JSON object with a result field (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE), an array of FDA enforcement evidence records, the source identifier (fda), an Ed25519 cryptographic signature for machine verification, the schema version (arakel.machine-evidence.v2), and a count of observed recalls.

## 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",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Recurring FDA recall monitoring for autonomous AI agents: watch drugs, food, medical devices, products, brands, firms, and ingredients for new official openFDA enforcement recalls."
      },
      "to": {
       "type": "string",
       "format": "date-time",
       "description": "Optional UTC end. Defaults to now."
      },
      "from": {
       "type": "string",
       "format": "date-time",
       "description": "Optional UTC start. Defaults to the last 7 days."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "OBSERVED|NOT_OBSERVED|INCONCLUSIVE",
  "schema": "arakel.machine-evidence.v2",
  "source": {
   "id": "fda"
  },
  "evidence": [
   {}
  ],
  "signature": {
   "alg": "Ed25519"
  },
  "observed_count": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/arakel-fda-recall-watch-c6154d4f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proof.arakelproof.space](https://www.zero.xyz/host/proof.arakelproof.space/llms.txt)