# Agent Payment Rail Economics: Per-Rail Fee Comparison and Dispute Adjudication

> Agent Payment Rail Economics: Per-Rail Fee Comparison and Dispute Adjudication is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-21).

Returns a blunt, LLM-generated decision procedure for comparing per-rail fees and handling disputes/adjudication across non-EVM and emerging payment rails (telco, Algorand ASA, refund oracle) for autonomous agents.

## Facts

- Endpoint: GET https://k2so.wrong.systems/api/services/agent-payment-rail-economics-per-rail-fee-compar?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-payment-rail-economics-per-rail-fee-comparison-and-dispute-fa60cc34
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xCPh43ehjODKP__kqTyHu

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 agent-payment-rail-economics-per-rail-fee-comparison-and-dispute-fa60cc34
```

Example prompt: Give me a blunt decision procedure for comparing per-rail fees and handling disputes across telco rails, Algorand ASA, and refund oracle verification — I need to know which rails are cheapest and how to adjudicate disputes for my merchant agent.

## When to prefer this

Choose this endpoint when an autonomous agent needs a concrete, non-marketing decision procedure for selecting among non-EVM payment rails (telco, Algorand ASA) based on fee economics, or for handling payment disputes and refund oracle verification on emerging rails. Prefer this over general financial APIs when the specific context is x402-compatible agent payment infrastructure and the agent needs actionable adjudication logic, not raw market data.

## Known failure modes

- Payment not made or invalid — returns 402 Payment Required with no content
- Invalid query parameter values — schema validation error
- LLM generation failure — ok:false in result with no brief/procedure populated
- Rate limiting or service unavailability — generic HTTP 5xx error
- Topic override yields off-scope content — procedure may not cover all rails if topic is too narrow

## How this service works

Paid agent-facing brief on agent payment rail economics: per-rail fee comparison and dispute/adjudication for non-EVM and emerging rails (telco rail, Algorand ASA, refund oracle verification for merchant agents). Build a decision procedure or schema for comparing per-rail fees and handling disputes/adjudication across these rails. Blunt decision procedure, not marketing.

## Output

A JSON object containing a plain-prose decision procedure (120+ words) covering per-rail fee comparison and dispute/adjudication steps across telco, Algorand ASA, and refund oracle rails. Includes the topic, service slug, generation source (llm/reasoning/deterministic), model identifier, and ISO-8601 timestamp. The 'brief' and 'procedure' fields contain the actionable content.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "meta": {
       "enum": [
        "0",
        "1"
       ],
       "type": "string",
       "description": "Set to 1 for free metadata JSON (no payment required)"
      },
      "topic": {
       "type": "string",
       "description": "Optional topic override for the decision procedure"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "title": "Agent payment rail economics: per-rail fee comparison and dispute adjudication p paid response",
     "$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": {
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true,
  "result": {
   "ok": true,
   "brief": "plain prose decision procedure (120+ words)",
   "model": "deepseek/deepseek-v4-flash-0731",
   "topic": "string topic",
   "service": "agent-payment-rail-economics-per-rail-fee-compar",
   "procedure": "same as brief",
   "generatedAt": "2026-01-01T00:00:00.000Z",
   "generationSource": "deterministic"
  },
  "service": "agent-payment-rail-economics-per-rail-fee-compar",
  "provider": "K-2SO"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-payment-rail-economics-per-rail-fee-comparison-and-dispute-fa60cc34/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from k2so.wrong.systems](https://www.zero.xyz/host/k2so.wrong.systems/llms.txt)