# x402 Identity Gate Check

> x402 Identity Gate Check is a paid API for AI agents from x402-agent-suite-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-23).

Checks whether an agent or request is allowed to proceed through an identity gate, returning a boolean allow/deny decision with a summary, gated behind x402 micropayment.

## Facts

- Endpoint: POST https://x402-agent-suite-production.up.railway.app/api/identity-gate/check?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-identity-gate-check-820b45da
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_58Ssbx7roCSF0i-uCuexP

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-identity-gate-check-820b45da -d '<json body>'
```

Example prompt: Run an identity gate check for this GET request to see if it's allowed to proceed — I need a yes/no decision and a short summary of the outcome.

## When to prefer this

Choose this endpoint when you need a lightweight, micropayment-gated identity/access check integrated into an x402-native agent pipeline. It is best suited for agent fleet orchestration scenarios where each gate check is a discrete, pay-per-use operation and you need a simple boolean allow/deny with a human-readable summary. Prefer alternatives if you need rich identity assertions, OAuth flows, or JWT-based auth rather than a simple pass/fail gate decision.

## Known failure modes

- Payment not settled — x402 payment challenge returned instead of gate result
- Invalid HTTP method supplied (only GET, HEAD, DELETE are accepted) — schema validation error
- Missing required 'input' field or 'type'/'method' subfields — 400 bad request
- Network or Railway deployment downtime — 502/503 error
- Disallowed request type — allowed=false with explanatory summary

## How this service works

24 paid x402 infrastructure APIs for AI agent fleets: buy advisor, audition coach, guard, proxy, MPP, attestations, and pipeline orchestration.

## Output

Returns a JSON object with three fields: 'ok' (boolean indicating the call succeeded), 'allowed' (boolean indicating whether the request passed the identity gate), and 'summary' (a short human-readable string explaining the decision). After the x402 micropayment of $0.05 USDC is settled, the response reflects the gate's allow/deny verdict.

## 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": [
      "ok",
      "allowed",
      "summary"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "allowed": {
       "type": "boolean"
      },
      "summary": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "allowed": true,
  "summary": "Paid response after x402 settlement"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-identity-gate-check-820b45da/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent-suite-production.up.railway.app](https://www.zero.xyz/host/x402-agent-suite-production.up.railway.app/llms.txt)