# Agent Trust Score for Base Wallet

> Agent Trust Score for Base Wallet is a paid API for AI agents from agent-trust-api-production.up.railway.app, paid per call via x402, $0.030000/call, status unknown (last checked 2026-09-15).

Returns a trust score (0-100), letter grade (A-F), tier, and x402 ecosystem participation status for a given Base wallet address

## Facts

- Endpoint: GET https://agent-trust-api-production.up.railway.app/score/:address
- Price: $0.030000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-trust-score-for-base-wallet-f718bf12
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_b7aS8H6cZl4Y9tMZe79bb

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 agent-trust-score-for-base-wallet-f718bf12
```

Example prompt: What's the trust score and grade for the Base wallet 0x1234...abcd? I want to vet them before agreeing to an on-chain deal.

## When to prefer this

Use this endpoint when you need a fast, single-wallet trust assessment before an on-chain transaction on the Base network, especially when vetting counterparties in x402-enabled agent-to-agent deals. Prefer this over the full report endpoint when you only need the top-line score and grade rather than a dimensional breakdown, and over batch scoring when you are evaluating a single address.

## Known failure modes

- Invalid or malformed wallet address returns 400 or error response
- Non-Base wallet address (e.g. Ethereum mainnet) may return no data or low-confidence score
- Wallet with no on-chain history may return a very low score or insufficient data error
- Payment failure (insufficient USDC) results in 402 Payment Required response
- Service downtime on Railway hosting may cause 503 errors

## How this service works

Agent trust score (0-100) for any Base wallet. Returns score, grade (A-F), tier, and x402 ecosystem participation status. Useful for vetting counterparties before on-chain deals.

## Output

Returns a JSON object containing a numeric trust score from 0 to 100, a letter grade from A to F, a trust tier label, and a boolean or status field indicating whether the wallet participates in the x402 ecosystem.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "address": "0x742d35Cc6634C0532925a3b844Bc9e7595f42bE8"
  }
 }
}
```

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-trust-score-for-base-wallet-f718bf12/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-trust-api-production.up.railway.app](https://www.zero.xyz/host/agent-trust-api-production.up.railway.app/llms.txt)