# ARAKEL FDA Drug Recalls Evidence Check

> ARAKEL FDA Drug Recalls Evidence Check is a paid API for AI agents from proof.arakelproof.space, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Queries FDA drug recall records and returns a cryptographically signed machine-evidence proof (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE) for a given subject

## Facts

- Endpoint: GET https://proof.arakelproof.space/v1/fda-drug-recalls
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/arakel-fda-drug-recalls-evidence-check-50ff82bd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lw4S8YdbDrwRpU-uYBV3a

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-drug-recalls-evidence-check-50ff82bd
```

Example prompt: Check whether Zantac 150mg has any active FDA drug recalls and give me a signed machine-evidence proof of the result — I need to know if it's OBSERVED, NOT_OBSERVED, or INCONCLUSIVE.

## When to prefer this

Choose this endpoint when you need a cryptographically signed, machine-verifiable attestation of FDA drug recall status — not just a raw database query. It is ideal for compliance workflows, supply chain audits, or counterparty due diligence where a NOT_OBSERVED proof (with Ed25519 signature) must be produced as evidence. Prefer this over direct FDA API access when you need structured, signed proofs consumable by downstream agents or smart contracts.

## Known failure modes

- Drug or NDC not found in FDA recall database — returns NOT_OBSERVED with empty evidence array
- Ambiguous query returns INCONCLUSIVE result
- FDA source temporarily unavailable — may return error or INCONCLUSIVE
- Invalid or missing query parameters — returns HTTP 400
- Payment not received or underpaid — returns HTTP 402 (x402 payment required)
- Rate limiting or quota exceeded — returns HTTP 429

## How this service works

Machine-verifiable official-source evidence with free preflight and x402 USDC payments on Base.

## Output

A JSON object containing a result field (OBSERVED, NOT_OBSERVED, or INCONCLUSIVE), the ARAKEL machine-evidence schema version, the source identifier (fda), an array of matching evidence records, and an Ed25519 cryptographic signature attesting to the proof's authenticity.

## 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": "FDA drug recall lookup by drug, brand, ingredient, firm, recall number, or product term using official openFDA enforcement data."
      },
      "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 365 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-drug-recalls-evidence-check-50ff82bd/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)