mcp server

ably

MCP server for Ably — channel history, presence, occupancy, stats, publish, and app management.

Description as published by the maintainer. Source

• version 1.0.1
• active

active — Registry entry last updated 2026-07-17.

What this server can do

The endpoint answered, but not with a valid Model Context Protocol response (tools/list returned no tool array). The functions below are the last successful declaration, not a fresh answer.

Endpoint status observed on 2026-08-13. Source: https://ably.usefulapi.io/mcp.

15 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

ably_get_account_stats(end, unit, limit, start, account_id)

Retrieve aggregated usage statistics across the whole account, bucketed by time. Account id is resolved from the control token when ABLY_ACCOUNT_ID is unset. Control API: GET /accounts/{account_id}/stats.

ably_get_channel_details(channel)

Get status and occupancy metrics for a single channel (connections, publishers, subscribers, presence members). REST: GET /channels/{channel}. Required: channel.

ably_get_channel_history(end, limit, start, channel, direction)

Retrieve historical messages published to a channel, newest-first by default. REST: GET /channels/{channel}/messages. Required: channel.

ably_get_presence(limit, channel, clientId, connectionId)

List the members currently present on a channel (who is online now). REST: GET /channels/{channel}/presence. Required: channel.

ably_get_presence_history(end, limit, start, channel, direction)

Retrieve historical presence events (enter/leave/update) for a channel. REST: GET /channels/{channel}/presence/history. Required: channel.

ably_get_service_time

Return the current Ably service time in ms since epoch. Useful for aligning start/end windows to the server clock. REST: GET /time.

ably_get_stats(end, unit, limit, start, direction)

Retrieve message/connection/channel usage statistics for the app tied to the API key, bucketed by time. REST: GET /stats.

ably_list_apps(account_id)

List all apps in the account (id, name, status, tls-only). Account id is resolved automatically from the control token when ABLY_ACCOUNT_ID is unset. Control API: GET /accounts/{account_id}/apps.

ably_list_channels(by, limit, prefix)

Enumerate channels that are currently active in the app. Requires the API key to have the 'channel-metadata' capability. REST: GET /channels.

ably_list_keys(app_id)

List the API keys for an app, including their capabilities (but not the full secret). Control API: GET /apps/{app_id}/keys. Required: app_id.

ably_list_namespaces(app_id)

List the channel namespaces (channel-rule prefixes) configured for an app, e.g. persistence and push settings. Control API: GET /apps/{app_id}/namespaces. Required: app_id.

ably_list_queues(app_id)

List the Ably Queues (AMQP/STOMP message queues) provisioned for an app, with their state and messaging stats. Control API: GET /apps/{app_id}/queues. Required: app_id.

ably_list_rules(app_id)

List the integration rules (reactor rules: webhooks, AWS Lambda/SQS/Kinesis, Kafka, Pulsar, etc.) configured for an app. Control API: GET /apps/{app_id}/rules. Required: app_id.

ably_publish_message(data, name, channel, clientId)

WRITE: publish a message to a channel. Every connected subscriber receives it in real time. This is a real, outward-facing side effect — confirm the channel and payload before calling. REST: POST /channels/{channel}/messages. Required: channel, data.

ably_whoami

Return details about the configured control token: the account and user it belongs to and its capabilities. Good first call to confirm control-plane access. Control API: GET /me.

Last successful function declaration observed on 2026-08-09. Source: https://ably.usefulapi.io/mcp. We list what the server declared; we do not call any of these functions.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Where to get it

• Repository — https://github.com/m190/usefulapi-mcp
• Remote endpoint (streamable-http) — https://ably.usefulapi.io/mcp

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