# x402 Trust Layer - Seller Audition Coach

> x402 Trust Layer - Seller Audition Coach is a paid API for AI agents from x402trustlayer.xyz, paid per call via x402, $0.06/call, status unknown (last checked 2026-10-02).

Audits an API seller's routes against x402/Dexter trust standards and returns per-route coaching, scores, and fix instructions to help sellers pass certification.

## Facts

- Endpoint: POST https://x402trustlayer.xyz/api/seller/audition-coach?utm_source=zero.xyz
- Price: $0.06/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-trust-layer-seller-audition-coach-37f6a4b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eoqVZ7oQpq_e-zycQGC4w

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-trust-layer-seller-audition-coach-37f6a4b1 -d '<json body>'
```

Example prompt: Can you audit my API using the x402 Trust Layer audition coach and give me a coaching report — use a GET method so I can see which routes pass, which fail, and what fixes I need to reach a score of 75+ for the Dexter/x402gle certified seller network?

## When to prefer this

Use this endpoint when you need pre-certification coaching for an x402 seller API — specifically to identify route-level issues, get actionable fix instructions, and estimate the host trust score before submitting to the Dexter/x402gle certified seller network. Prefer this over generic API linting tools when the goal is x402 trust compliance.

## Known failure modes

- Invalid or missing 'type' field (must be 'http') — returns validation error
- Invalid method enum value (only GET, HEAD, DELETE allowed) — returns 422
- Host unreachable or OpenAPI not discoverable — returns coached:false with discovery failures
- Routes below trust threshold — returns allowed:false with fix instructions
- Low confidence score if discovery endpoints are missing or incomplete

## How this service works

68 paid x402 trust infrastructure APIs: guard, semantic escrow, mandate diff, certified seller network, KYM, mandates, compliance, disputes, and orchestration.

## Output

Returns a JSON object with: overall ok/status flags, coached boolean, allowed boolean, a human-readable summary, per-route audit results (url, method, scoreEstimate, status, issues, fixInstructions), aggregated coaching stats (passCount, failCount, warnCount, topFixes, hostScoreEstimate), discovery health (openapiOk, wellKnownOk, resourceCount, openapiPathCount), confidence score, and a list of checks_passed.

## 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",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "status",
      "ok",
      "coached",
      "allowed",
      "hostScoreEstimate",
      "summary",
      "discovery",
      "routes",
      "routeAudits",
      "coaching",
      "confidence",
      "checks_passed"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "routes": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "url",
         "method",
         "scoreEstimate",
         "status",
         "issues",
         "fixInstructions"
        ],
        "properties": {
         "url": {
          "type": "string"
         },
         "issues": {
          "type": "array",
          "items": {
           "type": "object"
          }
         },
         "method": {
          "type": "string"
         },
         "status": {
          "type": "string"
         },
         "scoreEstimate": {
          "type": "number"
         },
         "fixInstructions": {
          "type": "array",
          "items": {
           "type": "object"
          }
         }
        }
       }
      },
      "status": {
       "type": "string"
      },
      "allowed": {
       "type": "boolean"
      },
      "coached": {
       "type": "boolean"
      },
      "summary": {
       "type": "string"
      },
      "coaching": {
       "type": "object",
       "required": [
        "hostScoreEstimate",
        "failCount",
        "passCount",
        "warnCount",
        "topFixes"
       ],
       "properties": {
        "topFixes": {
         "type": "array",
         "items": {
          "type": "object"
         }
        },
        "failCount": {
         "type": "number"
        },
        "passCount": {
         "type": "number"
        },
        "warnCount": {
         "type": "numb
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "routes": [
   {
    "url": "https://x402trustlayer.xyz/api/guard/pre-x402",
    "issues": [],
    "method": "POST",
    "status": "pass",
    "scoreEstimate": 85,
    "fixInstructions": []
   }
  ],
  "status": "ok",
  "allowed": true,
  "coached": true,
  "summary": "3 routes audited; ~78 avg score; 0 need fixes before Dexter/x402gle pass (75+).",
  "coaching": {
   "topFixes": [],
   "failCount": 0,
   "passCount": 3,
   "warnCount": 0,
   "hostScoreEstimate": 78
  },
  "discovery": {
   "openapiOk": true,
   "wellKnownOk": true,
   "resourceCount": 38,
   "openapiPathCount": 38
  },
  "confidence": 0.88,
  "routeAudits": [
   {
    "url": "https://x402trustlayer.xyz/api/guard/pre-x402",
    "issues": [],
    "method": "POST",
    "status": "pass",
    "scoreEstimate": 85,
    "fixInstructions": []
   }
  ],
  "checks_passed": [
   "openapi_checked",
   "well_known_checked",
   "routes_audited"
  ],
  "hostScoreEstimate": 78
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trust-layer-seller-audition-coach-37f6a4b1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402trustlayer.xyz](https://www.zero.xyz/host/x402trustlayer.xyz/llms.txt)