# BYTE Library x402 Gateway – Merchant Trust Feed

> BYTE Library x402 Gateway – Merchant Trust Feed is a paid API for AI agents from x402.payperbyte.io, paid per call via x402, $0.004883/call, status unknown (last checked 2026-09-15).

Returns a cryptographically signed, EIP-712 provenance-stamped merchant trust data feed, paid per call in USDC via x402 with no API key required.

## Facts

- Endpoint: GET https://x402.payperbyte.io/feeds/merchant-trust
- Price: $0.004883/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/byte-library-x402-gateway-merchant-trust-feed-ef8baf10
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_I1EwbiRMtAUFGgSdNRK-U

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 byte-library-x402-gateway-merchant-trust-feed-ef8baf10
```

Example prompt: Pull the merchant-trust feed from BYTE Library — I need the latest cryptographically signed and provenance-stamped merchant trust data, and pay for it with USDC via my wallet on Base.

## When to prefer this

Choose this endpoint when you need verifiable, provenance-first merchant trust data with cryptographic attestation and do not want to manage API keys. Ideal for AI agents that require tamper-evident data with on-chain provenance (EIP-712) and can pay micropayments in USDC on Base via x402.

## Known failure modes

- Insufficient USDC balance in wallet — payment fails, 402 response returned
- Invalid or missing x402 payment header — endpoint rejects request
- Network congestion on Base causing settlement delay
- Feed temporarily unavailable — empty or error payload returned
- Wallet not authorized or misconfigured — authentication failure

## How this service works

Verified, provenance-first data feeds for AI agents. Every payload is cryptographically signed and EIP-712 PayloadAttestation provenance-stamped — covering crypto markets, DeFi yields, weather, earthquakes, news, code-pulse, threat-intel, and a slashable fact-oracle. Pay per call in USDC over x402 with no API keys — a wallet, not a secret on the box. Settlement is on Base (eip155:8453). Price is per-feed, derived from expected payload size at $0.005000/KB (floor $0.001000).

## Output

A JSON payload containing the merchant-trust feed data, cryptographically signed and stamped with an EIP-712 PayloadAttestation for provenance verification. The response includes the feed identifier and associated trust metrics, with settlement confirmed on Base (eip155:8453).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "feed": "merchant-trust"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/byte-library-x402-gateway-merchant-trust-feed-ef8baf10/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.payperbyte.io](https://www.zero.xyz/host/x402.payperbyte.io/llms.txt)