STP SPEI

v0.2.0-alpha.1API Keyalpha

Mexican instant bank transfers via SPEI. Your agent sends and receives MXN in real time through the national payment system.

18 tools2 env vars🇲🇽 Mexicoalpha — pending validation

Install

terminal

$ npm install @codespar/mcp-stp-spei@alpha

Quickstart

Add this entry to your claude_desktop_config.json (or any MCP-compatible client config).

claude_desktop_config.json

{
  "mcpServers": {
    "stp-spei": {
      "command": "npx",
      "args": [
        "-y",
        "@codespar/mcp-stp-spei@alpha"
      ],
      "env": {
        "STP_API_KEY": "<your_stp_api_key>",
        "STP_COMPANY": "<your_stp_company>"
      }
    }
  }
}

After restart, your agent can call any of the 18 tools below — try create_transfer first.

Environment variables · 2

Required to authenticate the server. Stored encrypted when using CodeSpar managed hosting.

STP_API_KEY

requiredsecret

API key for STP

STP_COMPANY

required

Company identifier for STP

Available tools · 18

Each tool is independent — your agent loads only what it needs to reduce context and response time.

WRITEcreate_transfer

Create a SPEI transfer

READget_transfer

Get transfer details by ID

READlist_transfers

List transfers with filters

DELETEcancel_transfer

Cancel a pending SPEI orden by clave_rastreo (only works while orden is pending)

READget_balance

Get account balance

READlist_account_balances

List balances for all company accounts

WRITEvalidate_account

Validate a CLABE account number against the receiving bank (online check)

WRITEvalidate_clabe

Validate CLABE structure and checksum locally (no API call). Returns bank code, plaza, account, and check digit

Compatible frameworks

MCP is a protocol — any framework that speaks it can mount this server.

Claude Agent SDKAnthropic

OpenAI AgentsOpenAI

Vercel AI SDKVercel

LangChainLangChain

LlamaIndexLlamaIndex

CrewAICrewAI

MastraMastra

Any MCP clientProtocol

Frequently asked questions

All credentials are encrypted at rest in an isolated vault scoped per organization. OAuth2 tokens are automatically refreshed before expiry. Your agent code never sees raw secrets — it receives scoped, short-lived session tokens.