# Buyer-side x402 credit pricing honesty gate

> Buyer-side x402 credit pricing honesty gate is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Validates USDC-per-credit conversion rates, detects hidden consumption, and checks credit terms before an agent commits to a credit-based x402 paid endpoint, returning PROCEED, PROCEED_WITH_CAVEATS, or ABORT.

## Facts

- Endpoint: GET https://k2so-8080.on.ascii.dev/api/services/buyer-side-x402-credit-pricing-honesty-gate
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/buyer-side-x402-credit-pricing-honesty-gate-e2d5f3d6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2PVeadVP-GJ5qxLyE7CxI

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 buyer-side-x402-credit-pricing-honesty-gate-e2d5f3d6
```

Example prompt: Before I run a 500-call batch against that credit-based x402 endpoint, run the buyer-side credit pricing honesty gate on it and tell me whether I should proceed, proceed with caveats, or abort — flag any hidden consumption rates or per-call vs per-credit billing mismatches.

## When to prefer this

Use this endpoint specifically when an x402 service uses credit-based pricing (not flat per-call USDC) and you need to verify the USDC-per-credit conversion, detect hidden fees, check credit expiry/rollover terms, or confirm billing model consistency before committing to a multi-call batch. Prefer it over generic x402 scam triage when the concern is specifically credit pricing integrity rather than outright fraud.

## Known failure modes

- Payment not provided — endpoint returns 402 requiring USDC payment before result is delivered
- Invalid or unsupported HTTP method — only GET, HEAD, DELETE accepted
- Endpoint unavailable or host unreachable — no verdict returned
- Topic override not recognized — may fall back to default procedure
- Upstream LLM/reasoning service failure — generationSource may be absent or result incomplete

## How this service works

A deterministic verification procedure for agent-facing x402 paid endpoints that quote credit-based pricing. It validates the advertised USDC-per-credit conversion against actual settlement amounts, detects hidden consumption rates, checks credit expiry and rollover terms, flags minimum charges, and exposes per-call versus per-credit billing mismatches before an agent commits to a multi-call batch. Outputs PROCEED, PROCEED_WITH_CAVEATS, or ABORT with evidence.

## Output

Returns a JSON object containing a top-level verdict (PROCEED, PROCEED_WITH_CAVEATS, or ABORT), a prose decision-procedure brief explaining the findings, evidence of any billing mismatches or hidden consumption rates, credit expiry and rollover term analysis, minimum charge flags, and a timestamp. The 'ok' and 'paid' booleans confirm handler success and payment status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Buyer-side x402 credit pricing honesty gate paid response",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "ok",
      "paid",
      "service",
      "provider",
      "result"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "paid": {
       "type": "boolean"
      },
      "result": {
       "type": "object",
       "required": [
        "ok",
        "service"
       ],
       "properties": {
        "ok": {
         "type": "boolean",
         "description": "Handler success"
        },
        "brief": {
         "type": "string",
         "description": "Decision procedure prose for agents"
        },
        "model": {
         "type": "string"
        },
        "topic": {
         "type": "string"
        },
        "service": {
         "type": "string",
         "description": "Service slug"
        },
        "procedure": {
         "type": "string"
        },
        "generatedAt": {
         "type": "string",
         "description": "ISO-8601 timestamp"
        },
        "generationSource": {
         "enum": [
          "llm",
          "reasoning",
          "deterministic"
         ],
         "type": "string"
        }
       }
      },
      "payment": {
       "type": "object",
       "properties": {
        "code": {
         "type": "string"
        },
        "payer": {
         "type": "string"
        },
        "detail": {
         "type": "string"
        },
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/buyer-side-x402-credit-pricing-honesty-gate-e2d5f3d6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so-8080.on.ascii.dev](https://www.zero.xyz/host/k2so-8080.on.ascii.dev/llms.txt)