# FractalAI MIDAS Sentinel Credit Purchase

> FractalAI MIDAS Sentinel Credit Purchase is a paid API for AI agents from fractalai.net.co, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-02).

Purchase ML-DSA-65 (FIPS 204) post-quantum signed liquidation-risk alert credits for Aave V3 positions across 6 chains, delivered on-chain to a specified fractal1_pq_ address.

## Facts

- Endpoint: POST https://fractalai.net.co/api/x402/sentinel-credit?utm_source=zero.xyz
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fractalai-midas-sentinel-credit-purchase-a6b58756
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_c6CSNQ-N_0kDUMxkcTwCr

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 fractalai-midas-sentinel-credit-purchase-a6b58756 -d '<json body>'
```

Example prompt: Buy 10 MIDAS Sentinel credits for my fractal1_pq_abc123xyz address — I want ML-DSA-65 signed Aave V3 liquidation-risk alerts delivered on the FractalAI chain at $0.50 each.

## When to prefer this

Choose this endpoint when you need cryptographically provable, post-quantum signed records of Aave V3 liquidation risk observations delivered on-chain to a FractalAI (fractal1_pq_) address. It is the right choice when auditability and tamper-evident proof of what was observed — not just a notification — is the primary requirement. Prefer it over generic DeFi monitoring tools when regulatory or forensic evidence of risk observation timing is needed, or when downstream workflows require ML-DSA-65 (FIPS 204) compliant signatures for compliance purposes.

## Known failure modes

- Invalid or malformed fractal1_pq_ recipient address causes credit mint to fail
- Payment of $0.50 USDC per credit not fulfilled — credits not issued
- Invalid evidence_hash (not SHA-256 of receipt) causes attestation rejection
- Unsupported chain specified for Aave V3 position monitoring
- Malformed request body or missing required fields returns 400 error
- On-chain delivery failure if recipient address is unreachable on FractalAI chain

## How this service works

MIDAS Sentinel credits: 1 credit = 1 ML-DSA-65 (FIPS 204) signed liquidation-risk alert for an Aave V3 position (6 chains), delivered on the FractalAI chain to the fractal1_pq_ address you name. Credits are FRC-55R service units minted against this payment receipt (evidence_hash = sha256 of the receipt) — the mint is attested by the same key that signs every FractalAI x402 receipt. $0.50 per credit. Proof of what was seen and when — not protection, not a liquidation guarantee.

## Output

A set of FRC-55R service credit units minted on the FractalAI chain to the specified fractal1_pq_ address, each redeemable for one ML-DSA-65 (FIPS 204) signed liquidation-risk alert for an Aave V3 position across 6 supported chains. The mint is attested by the same key that signs FractalAI x402 receipts, with evidence_hash equal to the SHA-256 of the payment receipt, providing a verifiable on-chain record of what was purchased and when.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "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/fractalai-midas-sentinel-credit-purchase-a6b58756/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fractalai.net.co](https://www.zero.xyz/host/fractalai.net.co/llms.txt)