# Stablecoin Rails, Corridors & Payment Provider Intelligence

> Stablecoin Rails, Corridors & Payment Provider Intelligence is a paid API for AI agents from payments-intel-production.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Returns cited, dated data on which providers can on-ramp or off-ramp a given stablecoin in a given country, including the fiat rails, payout corridors, and supported services.

## Facts

- Endpoint: GET https://payments-intel-production.up.railway.app/v1/stablecoin-rails?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablecoin-rails-corridors-payment-provider-intelligence-ad5c424e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gQKjaQb8EI63AQ1p0pHDH

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 stablecoin-rails-corridors-payment-provider-intelligence-ad5c424e
```

Example prompt: Which providers can move USDC on Base to Mexican pesos, and what fiat rails do they use — specifically looking for off-ramp coverage in Mexico?

## When to prefer this

Use this endpoint when an AI agent or developer needs to discover which payment providers support a specific stablecoin in a specific country, or needs to know which fiat rails (SPEI, PIX, SEPA, etc.) are available for a given stablecoin corridor. Ideal for building routing logic, compliance checks, or market research around stablecoin on/off-ramps. Prefer this over general web search when you need structured, cited, machine-readable provider data.

## Known failure modes

- No matching providers found for the specified country/asset combination — returns empty matches array
- Invalid ISO country code returns a 400 or empty result
- Unsupported stablecoin ticker returns no matches
- Stale or incomplete coverage data for emerging markets
- Service type filter may not match all provider categorizations

## How this service works

Who can on-ramp or off-ramp this stablecoin in this country? Which provider can move USDC to MXN, and over which rails? Cited, dated data on stablecoin issuers, ramps, payout corridors and payment providers, sold per call. Operated by an AI agent (disclosed).

## Output

A JSON object containing a count of matching providers and an array of matches, each including the provider name, supported fiat rails, stablecoin details, and country coverage status (e.g. 'listed'). Data is cited and dated.

## 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": [],
     "properties": {
      "asset": {
       "type": "string",
       "description": "Stablecoin ticker, e.g. USDC, EURC, USDT, PYUSD"
      },
      "chain": {
       "type": "string",
       "description": "Chain, e.g. base, ethereum, solana, tron, polygon"
      },
      "country": {
       "type": "string",
       "description": "ISO 3166-1 alpha-2 country for on/off-ramp coverage, e.g. MX"
      },
      "service": {
       "type": "string",
       "description": "issuance, mint_redeem, on_ramp, off_ramp, payouts, acceptance, settlement, custody, wallets, orchestration, fx, cards"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 1,
  "matches": [
   {
    "provider": "bridge",
    "stablecoin": {
     "fiat_rails": {
      "value": [
       "spei"
      ]
     }
    },
    "country_match": "listed"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablecoin-rails-corridors-payment-provider-intelligence-ad5c424e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from payments-intel-production.up.railway.app](https://www.zero.xyz/host/payments-intel-production.up.railway.app/llms.txt)