2-chat

2Chat through One

2Chat is a business messaging platform that provides APIs and automation tools for WhatsApp communication, enabling teams and developers to send messages, manage conversations, integrate chat workflows, and support customer engagement across sales, marketing, and service use cases.

One exposes 2Chat through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform 2-chat if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm 2Chat is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real 2Chat account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

Contacts

Action	Method	Path	Action id
Get a Contact	GET	/open/contacts/{{contactUuid}}	conn_mod_def::GLT35AXTzKc::UXg7sd2zRdKhxmx2ZjTt2g
List Contacts	GET	/open/contacts	conn_mod_def::GLT348d7WSg::l1QOJt7oQnKwx-5Y6MSgUg
Search Contacts	GET	/open/contacts/search	conn_mod_def::GLT35JlfZR8::jm03mMDyQ9qpoU1yxyWLhA
Create Contact Using Contacts	POST	/open/contacts	conn_mod_def::GLT349vfDT8::DjBuJ2AdQcWfLlNzpqZgBg
Delete a Contact	DELETE	/open/contacts/{{contactUuid}}	conn_mod_def::GLT346yhKBg::9gRFVfGeQkCPCnMOUgGARw
Update a Contact	PUT	/open/contacts/{{contactUuid}}	conn_mod_def::GLT35IC2-P8::6xFWYSKuRfKd6NKN0x9ULg