# Boon x402 Endpoint Review History

> Boon x402 Endpoint Review History is a paid API for AI agents from api.boonprotocol.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns the full paginated review history for a given reviewer wallet address, including evidence-labeled reviews of x402 endpoints backed by USDC or $BOON.

## Facts

- Endpoint: GET https://api.boonprotocol.com/api/v1/x402/reviews
- 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/boon-x402-endpoint-review-history-f4b87847
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0DiBBM355U-ny5jwxP3pD

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 boon-x402-endpoint-review-history-f4b87847
```

Example prompt: Pull up the full review history for wallet 0x0000000000000000000000000000000000000002 on Boon — show me all the x402 endpoint reviews they've written, up to 50 at a time.

## When to prefer this

Use this endpoint when you need the complete, paginated review history attributed to a specific reviewer wallet — especially when you want evidence-labeled (boon-backed, receipt-verified) reviews rather than anonymous or unverified feedback. Prefer this over the free discovery endpoint when you need full review text and evidence metadata for a known wallet, and you are willing to pay $0.01 USDC per call via x402.

## Known failure modes

- Missing or malformed reviewer address (not matching ^0x[0-9a-fA-F]{40}$) returns a validation error
- Offset exceeding maximum of 1000 returns an error
- Reviewer wallet has no reviews — returns empty items array with total 0
- Payment of $0.01 USDC via x402 not included — returns HTTP 402 Payment Required
- Rate limiting or network issues may cause transient 5xx errors

## How this service works

Boon is the gratuity graph for agents. Discover recognized x402 endpoints for free, compare signed reviews with USDC recognition and $BOON burned, then pay one cent through x402 or MPP only for full review history.

## Output

Returns a paginated list of review objects, each containing the review text, evidence kind (e.g. boon_backed), the route ID of the reviewed endpoint, and the reviewer's wallet address and linked accounts. Also includes pagination metadata (total count, limit, offset, hasMore flag) and a version field.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "reviewer"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "default": 25,
       "maximum": 100,
       "minimum": 1
      },
      "offset": {
       "type": "integer",
       "default": 0,
       "maximum": 1000,
       "minimum": 0
      },
      "reviewer": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "Reviewer wallet whose evidence-labeled review history should be returned."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "items": [
   {
    "review": {
     "reviewer": {
      "wallet": "0x0000000000000000000000000000000000000002",
      "accounts": []
     },
     "reviewText": "Useful for a narrow query.",
     "evidenceKind": "boon_backed"
    },
    "routeId": "0x9569f7ef2e344da57aa497dafe4509499f133340d1e0ab0d3e93f6e7c057bb0e"
   }
  ],
  "version": "1",
  "reviewer": {
   "wallet": "0x0000000000000000000000000000000000000002",
   "accounts": []
  },
  "pagination": {
   "limit": 25,
   "total": 1,
   "offset": 0,
   "hasMore": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/boon-x402-endpoint-review-history-f4b87847/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.boonprotocol.com](https://www.zero.xyz/host/api.boonprotocol.com/llms.txt)