Enviadores

Multi-carrier shipping in Mexico (Estafeta, DHL, FedEx, Paquetexpress and more): live rates, label creation, tracking and address book on a prepaid balance…

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What it can do

  • Get Shipping Rates: Quote a Mexican domestic shipment across all available carriers and compare rates. Origin/destination: a bare postal code ({"postal_code":"01000"}), a full address, or saved from_i
  • Create Shipment: Create a shipment and buy the label (guía) using a valid rate_id from get_shipping_rates (same key, <30 min). SPENDS REAL BALANCE with ek_live_ keys — the server enforces the prepaid
  • List Shipments: List the account's shipments (paginated). Filters: guia (tracking number), status (created|collected|in_transit|out_for_delivery|delivered|exception|returned|cancelled|unknown), from/t

What data it sees

Do you need an account

No: the server works without sign-in

Multi-carrier shipping in Mexico (Estafeta, DHL, FedEx, Paquetexpress and more): live rates, label creation, tracking and address book on a prepaid balance with server-side spend limits. OAuth 2.1 or ek_ API keys; ek_test_ keys get a free sandbox. Docs: https://enviadores.com.mx/desarrolladores

How to connect

How to connect Enviadores to Claude

The server address to paste into Claude settings:

https://enviadores--alejandro-sarmiento-pa.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Enviadores to ChatGPT

The server address to paste into ChatGPT settings:

https://enviadores--alejandro-sarmiento-pa.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Enviadores to Cursor

The server address to paste into Cursor settings:

https://enviadores--alejandro-sarmiento-pa.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (12)

Raw names from tools/list. Only developers need these.

get_shipping_ratesQuote a Mexican domestic shipment across all available carriers and compare rates. Origin/destination: a bare postal code ({"postal_code":"01000"}), a full address, or saved from_id/to_id. Each rate carries an id (rate_id) usable in create_shipment; it expires in 30 minutes. Español: cotiza con todas las paqueterías y devuelve tarifas comparadas; el rate_id expira en 30 minutos.
create_shipmentCreate a shipment and buy the label (guía) using a valid rate_id from get_shipping_rates (same key, <30 min). SPENDS REAL BALANCE with ek_live_ keys — the server enforces the prepaid balance and the key's daily limit, so overspending is impossible. Full sender and recipient addresses (or from_id/to_id from the address book). Idempotent: pass idempotency_key for safe retries; if omitted one is generated and returned in the result. Español: crea el envío y compra la guía; cobra saldo prepagado con límites del lado del servidor; reutiliza idempotency_key para reintentar sin duplicar.
list_shipmentsList the account's shipments (paginated). Filters: guia (tracking number), status (created|collected|in_transit|out_for_delivery|delivered|exception|returned|cancelled|unknown), from/to (ISO dates). Español: lista los envíos de la cuenta con filtros opcionales.
track_shipmentTrack a shipment by tracking number (guía) on any supported carrier; returns the canonical status and its history. Español: rastrea una guía y devuelve el estatus canónico y su historial.
get_labelFetch the label (PDF) URL for one of your shipments, by shipment id. Español: obtiene la URL de la etiqueta (guía PDF) de un envío propio.
cancel_shipmentRequest cancellation of one of your shipments. Approval may be asynchronous depending on the carrier; the result includes the request state. Español: solicita la cancelación; la aprobación puede ser asíncrona según la paquetería.
get_balancePrepaid balance available on the account (MXN) — the hard spending ceiling for create_shipment. Español: saldo prepagado disponible; el techo duro de gasto de esta cuenta.
validate_postal_codeValidate a Mexican postal code against the official SEPOMEX catalog; returns state, municipality and colonias. Use it to confirm the CP and pick the right colonia before quoting. Español: valida un CP contra SEPOMEX y devuelve estado, municipio y colonias.
list_sendersList saved senders (the address book). Returns ids usable as from_id in get_shipping_rates and create_shipment — prefer ids over retyping addresses. Filters: q (name search), postal_code; paginated. Español: lista remitentes guardados; usa sus ids como from_id en vez de reescribir direcciones.
create_senderSave a sender in the address book and get back its id for from_id. Idempotent by content: the same name+address reuses the existing row (no duplicates). Surnames/company/rfc are optional extras. Español: guarda un remitente y devuelve su id; repetir la misma dirección reutiliza la fila.
list_recipientsList saved recipients. Returns ids usable as to_id (each belongs to a sender — pass the matching from_id when shipping). Filters: sender_id, q, postal_code; paginated. Español: lista destinatarios guardados; usa sus ids como to_id junto con el from_id del remitente dueño.
create_recipientSave a recipient under a sender (sender_id required) and get back its id for to_id. Same-content dedupe as senders. referencia/delivery_instructions travel to the carrier where supported. Español: guarda un destinatario bajo un remitente y devuelve su id para to_id.