# Stablecoin rails, corridors and payment provider data

> Cited stablecoin rails, corridors, providers, chain and token facts for agents. x402/MPP paid.

- name: app.railway.up.payments-intel-production/payments-intel
- version: 0.1.1
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/app.railway.up.payments-intel-production%2Fpayments-intel
- tools: https://api.protogrid.dev/v1/servers/app.railway.up.payments-intel-production%2Fpayments-intel/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "payments-intel": {
      "type": "http",
      "url": "https://payments-intel-production.up.railway.app/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-2d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-03-26; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: search_providers (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_provider (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); find_corridor (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,705 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: 4 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 8, about 1,705 tokens to load them all
- tool set hash: 07aeec450d5421b6a7bc1d9670e2e248
- tools last changed: 2026-10-13T15:14:23.525Z
- badge: [![protogrid quality](https://protogrid.dev/badge/app.railway.up.payments-intel-production/payments-intel.svg)](https://protogrid.dev/servers/app.railway.up.payments-intel-production/payments-intel)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-13 `get_token` added
  - What are the symbol, name, decimals, contract address and issuer of this stablecoin on this chain? Paid ($0.001 USDC): Cited stablecoin token facts from a prepared dataset (USDC, EURC, USDT, PYUSD, DAI on the chains /v1/chain covers, where a permissively licensed source lists them): symbol, name, decimals, contract address, chain, issuer, each with a source citation and license. Fields not established from a source are the string "unknown". Malformed input and tokens not in the dataset return 400/404 and are never charged. This server holds no wallet and never pays: it returns the HTTP 402 payment requirements (x402 on Base, MPP on Tempo) and the URL https://payments-intel-production.up.railway.app/v1/token. Pay with your own x402/MPP client and retry that URL.
- 2026-10-12 `get_chain` added
  - What are the basic facts of this chain (CAIP-2 id, gas token, explorer, x402/MPP settlement, stablecoins)? Paid ($0.001 USDC): Cited chain facts from a prepared dataset: CAIP-2 chain id, gas token, finality class, block explorer, whether x402 and MPP settle there, and stablecoins. Fields not established from a source are the string "unknown". Unknown chains and malformed input return 404/400 and are never charged. This server holds no wallet and never pays: it returns the HTTP 402 payment requirements (x402 on Base, MPP on Tempo) and the URL https://payments-intel-production.up.railway.app/v1/chain. Pay with your own x402/MPP client and retry that URL.
- 2026-10-12 `check_address_format` added
  - Is this address well formed for this chain, and what is its EIP-55 checksummed form? Free: deterministic address format check for EVM chains (EIP-55 checksum: valid, checksummed form, whether the input checksum was correct, all lowercase or all uppercase) and Solana (base58, 32 bytes). No external calls. 60 calls/min per client. Format only; says nothing about who controls an address.
- 2026-10-12 `get_examples` added
  - What do the paid endpoints return, and what do they cost? Free: prices and paths of every paid endpoint, plus a full example response for GET /v1/provider taken verbatim from a real record, labelled as an example with its last-verified date. Use it to see the shape and depth of paid data before paying.

Full history: https://api.protogrid.dev/v1/servers/app.railway.up.payments-intel-production%2Fpayments-intel/changes

## Remotes

- https://payments-intel-production.up.railway.app/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (8)

- `check_address_format`: Is this address well formed for this chain, and what is its EIP-55 checksummed form? Free: deterministic address format check for EVM chains (EIP-55 checksum: valid, checksummed form, whether the input checksum was correct, all lowercase or all uppercase) and Solana (base58, 32 bytes). No external calls. 60 calls/min per client. Format only; says nothing about who controls an address.
- `find_corridor`: Who can move money from this currency or stablecoin to that one, in this country, over which rails? Paid ($0.03 USDC): Money-movement routes from one currency or stablecoin to another: corridors providers publish (rails, speed, fee notes, cited), plus on/off-ramp routes inferred from ramp coverage, labelled as inferred. This server holds no wallet and never pays: it returns the HTTP 402 payment requirements (x402 on Base, MPP on Tempo) and the URL https://payments-intel-production.up.railway.app/v1/corridor. Pay with your own x402/MPP client and retry that URL.
- `get_chain`: What are the basic facts of this chain (CAIP-2 id, gas token, explorer, x402/MPP settlement, stablecoins)? Paid ($0.001 USDC): Cited chain facts from a prepared dataset: CAIP-2 chain id, gas token, finality class, block explorer, whether x402 and MPP settle there, and stablecoins. Fields not established from a source are the string "unknown". Unknown chains and malformed input return 404/400 and are never charged. This server holds no wallet and never pays: it returns the HTTP 402 payment requirements (x402 on Base, MPP on Tempo) and the URL https://payments-intel-production.up.railway.app/v1/chain. Pay with your own x402/MPP client and retry that URL.
- `get_examples`: What do the paid endpoints return, and what do they cost? Free: prices and paths of every paid endpoint, plus a full example response for GET /v1/provider taken verbatim from a real record, labelled as an example with its last-verified date. Use it to see the shape and depth of paid data before paying.
- `get_provider`: What exactly does this provider support, where is it licensed and what does it charge? Paid ($0.01 USDC): Full cited record for one provider: stablecoin rails, corridors, licences, published fees, coverage, developer and agent-payment support. Every fact has source URL, retrieval date, quote and confidence. This server holds no wallet and never pays: it returns the HTTP 402 payment requirements (x402 on Base, MPP on Tempo) and the URL https://payments-intel-production.up.railway.app/v1/provider. Pay with your own x402/MPP client and retry that URL.
- `get_token`: What are the symbol, name, decimals, contract address and issuer of this stablecoin on this chain? Paid ($0.001 USDC): Cited stablecoin token facts from a prepared dataset (USDC, EURC, USDT, PYUSD, DAI on the chains /v1/chain covers, where a permissively licensed source lists them): symbol, name, decimals, contract address, chain, issuer, each with a source citation and license. Fields not established from a source are the string "unknown". Malformed input and tokens not in the dataset return 400/404 and are never charged. This server holds no wallet and never pays: it returns the HTTP 402 payment requirements (x402 on Base, MPP on Tempo) and the URL https://payments-intel-production.up.railway.app/v1/token. Pay with your own x402/MPP client and retry that URL.
- `search_providers`: Which payment or stablecoin providers support this asset, chain, country or service? Free: search payment and stablecoin providers by category, asset, chain, ramp country or service. Returns compact cards (no citations); use get_provider for the full cited record. 50 calls/day per client.
- `stablecoin_rails`: Who can on-ramp, off-ramp, issue or settle this stablecoin, on which chain, in which country? Paid ($0.01 USDC): Stablecoin rails by asset, chain, country and service, with the cited stablecoin block for each matching provider (assets, chains, ramp countries, fiat rails, custody model). Country matches say whether the country is listed or only covered by a 'global' claim. This server holds no wallet and never pays: it returns the HTTP 402 payment requirements (x402 on Base, MPP on Tempo) and the URL https://payments-intel-production.up.railway.app/v1/stablecoin-rails. Pay with your own x402/MPP client and retry that URL.