# x402.nsgoods.org Solana Settlement Verifier

> x402.nsgoods.org Solana Settlement Verifier is a paid API for AI agents from x402.nsgoods.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Verifies whether a Solana transaction credited a specified amount of a given SPL token mint to a designated payee address

## Facts

- Endpoint: GET https://x402.nsgoods.org/settle
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-nsgoods-org-solana-settlement-verifier-504c7501
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YUALxpjriOWYuz5N4rPGj

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 x402-nsgoods-org-solana-settlement-verifier-504c7501
```

Example prompt: Can you verify that Solana transaction 5J3mBbAH5XeHX... actually credited 1000000 atomic units of USDC to the payee address 7Xk3mN...? I need a VERIFIED or REFUTED verdict before I release the order.

## When to prefer this

Use this endpoint when you need a signed, structured attestation that a specific Solana SPL token transfer (typically USDC) credited a precise atomic amount to a known payee address — especially in automated x402 payment workflows where a machine-readable VERIFIED/REFUTED verdict is required before releasing goods, services, or access. Prefer this over raw Solana RPC calls when you need a normalized, schema-versioned response with explicit verdict semantics rather than raw transaction data.

## Known failure modes

- Transaction not found on-chain returns NOT_FOUND verdict
- Transaction found but amount or payee does not match returns REFUTED verdict
- Transaction not yet confirmed returns UNCONFIRMED verdict
- Invalid or malformed base58 transaction signature causes request error
- Incorrect payee or amount format leads to REFUTED rather than an error
- Network or RPC unavailability may cause timeout or error response

## How this service works

Signed Solana settlement verification (did tx credit amount of mint to payee). Free preview: GET /settle/preview

## Output

Returns a signed settlement verification object containing a verdict enum (VERIFIED, REFUTED, UNCONFIRMED, NOT_FOUND, or not_evaluated), the chain identifier, the signer address, the original transaction signature, and optionally the slot number and commitment level at which the transaction was observed.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "tx",
      "payee",
      "amount"
     ],
     "properties": {
      "tx": {
       "type": "string",
       "description": "Solana transaction signature (base58)."
      },
      "mint": {
       "type": "string",
       "description": "SPL mint (default USDC EPjFWdd5...)."
      },
      "payee": {
       "type": "string",
       "description": "Solana address expected to be credited."
      },
      "payer": {
       "type": "string",
       "description": "Optional: address expected to be a signer."
      },
      "amount": {
       "type": "string",
       "description": "Expected atomic units of the mint credited to payee."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "schema_version",
      "verdict",
      "chain",
      "signer",
      "signature"
     ],
     "properties": {
      "slot": {
       "type": [
        "integer",
        "null"
       ]
      },
      "chain": {
       "type": "string"
      },
      "signer": {
       "type": "string"
      },
      "verdict": {
       "enum": [
        "VERIFIED",
        "REFUTED",
        "UNCONFIRMED",
        "NOT_FOUND",
        "not_evaluated"
       ],
       "type": "string"
      },
      "signature": {
       "type": "string"
      },
      "commitment": {
       "type": [
        "string",
        "null"
       ]
      },
      "schema_version": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-nsgoods-org-solana-settlement-verifier-504c7501/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.nsgoods.org](https://www.zero.xyz/host/x402.nsgoods.org/llms.txt)