ably

Ably through One

Ably Pub/Sub is a global serverless real-time messaging platform that delivers sub‑60 ms latency pub/sub capabilities—including message history, presence detection, exactly‑once delivery, and guaranteed ordering—scaling to billions of messages and millions of devices with enterprise reliability.

One exposes Ably 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 ably 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 Ably 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 Ably 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

DeviceRegistrations

Action	Method	Path	Action id
Get a Registered Device’s Details	GET	/push/deviceRegistrations/{{deviceId}}	conn_mod_def::GJzyoJIlY38::vCnwFRiGTgCkdMtsQsGqOQ
List Registered Devices	GET	/push/deviceRegistrations	conn_mod_def::GJzyoidt0fo::o63FPpZsRCOOpxoQWOelKw
Register a Device for Receiving Push Notifications	POST	/push/deviceRegistrations	conn_mod_def::GJzyoxAWBBA::xctXWeqZTDOuzu4s9ryrsA
Reset a Registered Device Registration’s Update Token	POST	/push/deviceRegistrations/{{deviceId}}/resetUpdateToken	conn_mod_def::GJzyo5vgFjM::QUbrvjnsS4akBJBNURj-9w
Update a Device Registration	PATCH	/push/deviceRegistrations/{{deviceId}}	conn_mod_def::GJzypiuAY8E::z6gcdNBZQ6-WqEOGwf5boQ