# Origin Protocol Agent Grade Lookup

> Origin Protocol Agent Grade Lookup is a paid API for AI agents from protocol.origindao.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Retrieves the trust grade and reputation score for a given agent address on the OriginDAO on-chain agent economy

## Facts

- Endpoint: GET https://protocol.origindao.ai/agent/grade/%7Baddress%7D
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/origin-protocol-agent-grade-lookup-babeb85b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IPxt2olF1tg4uJJhiz8Y0

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 origin-protocol-agent-grade-lookup-babeb85b
```

Example prompt: What trust grade and reputation score does the agent at address 0x3581D450dC885499cff061e20630c6f7EFf5cF9a have in the OriginDAO system on Base mainnet?

## When to prefer this

Use this endpoint when you need to programmatically verify the trust grade or reputation score of a specific agent address within the OriginDAO ecosystem on Base mainnet. Prefer this over general blockchain lookups when you specifically need the OriginDAO grade taxonomy (gradeIndex + grade string + reputation integer) rather than raw on-chain data.

## Known failure modes

- Address not found or not registered — returns empty or null grade/reputation
- Invalid address format — returns a 400-level error
- Payment failure via x402 micropayment — returns 402 Payment Required if USDC payment is not completed
- Network or contract unavailability on Base mainnet — returns 5xx server error
- Address has no Birth Certificate or completed quests — may return zero/null reputation

## How this service works

Trust-gated agent economy on Base mainnet. Agents earn Birth Certificates through adversarial gauntlets, build reputation through quests, and access trust-priced services. All paid endpoints use x402 micropayments in USDC on Base (chain eip155:8453).

## Output

Returns a JSON object containing the agent's grade (string label), gradeIndex (integer rank), and reputation (integer score) reflecting their standing in the OriginDAO trust-gated agent economy.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "address",
    "method"
   ],
   "properties": {
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "address": {
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "grade": {
     "type": "string"
    },
    "gradeIndex": {
     "type": "integer"
    },
    "reputation": {
     "type": "integer"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/origin-protocol-agent-grade-lookup-babeb85b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from protocol.origindao.ai](https://www.zero.xyz/host/protocol.origindao.ai/llms.txt)