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Ably MCP by usefulapi MCP Server

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Ably MCP by usefulapi is answering right now. Last checked 11 min ago. It exposes 15 tools. Last commit 2 Nov 2026.

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

Uptime history 91 days of history · worst day 11%
91 days agonow
100.0%
Uptime 24h
91 of 91 checks
15
Tools
read from the server
160 ms
Response time
average over 24h
1
Stars
last commit 2 Nov 2026

What changed 47

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 30 September 2026. No other catalogue keeps this.

2 Nov a tool changed version
31 Oct a tool changed version4 times that day
30 Oct a tool changed version2 times that day
29 Oct a tool changed version2 times that day
28 Oct a tool changed version2 times that day
27 Oct a tool changed version
25 Oct a tool changed version4 times that day
24 Oct a tool changed version3 times that day
23 Oct a tool changed version
22 Oct a tool changed version
and 37 more, back to 30 September 2026

What the code does

We read the source, 22 h ago · tools taken from the live server · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

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Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 11 min ago.

run in your terminal
claude mcp add ably --transport http https://ably.usefulapi.io/mcp
Settings → Connectors → Add custom connector, then paste this address
https://ably.usefulapi.io/mcp
~/.codex/config.toml
[mcp_servers.ably]
url = "https://ably.usefulapi.io/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "ably": {
      "url": "https://ably.usefulapi.io/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "ably": {
      "type": "http",
      "url": "https://ably.usefulapi.io/mcp"
    }
  }
}

Available tools 15

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

ably
ably_get_account_stats
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
Get status and occupancy metrics for a single channel (connections, publishers, subscribers, presence members). REST: GET /channels/{channel}.
ably_get_channel_history
Retrieve historical messages published to a channel, newest-first by default. REST: GET /channels/{channel}/messages.
ably_get_presence
List the members currently present on a channel (who is online now). REST: GET /channels/{channel}/presence.
ably_get_presence_history
Retrieve historical presence events (enter/leave/update) for a channel. REST: GET /channels/{channel}/presence/history.
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
Retrieve message/connection/channel usage statistics for the app tied to the API key, bucketed by time. REST: GET /stats.
ably_list_apps
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
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
List the API keys for an app, including their capabilities (but not the full secret). Control API: GET /apps/{app_id}/keys.
ably_list_namespaces
List the channel namespaces (channel-rule prefixes) configured for an app, e.g. persistence and push settings. Control API: GET /apps/{app_id}/namespaces.
ably_list_queues
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.
ably_list_rules
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.
ably_publish_message
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.
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.

Endpoints

URLTransportStateLatencyChecked
https://ably.usefulapi.io/mcp streamable-http answering 69 ms 11 min ago

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Ably MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Ably MCP by usefulapi do?
It exposes 15 tools, read directly from the server on our last check. Among them: ably_get_account_stats, ably_get_channel_details, ably_get_channel_history, ably_get_presence, ably_get_presence_history, ably_get_service_time and 9 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Ably MCP by usefulapi working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 160 ms. The bar chart above shows every period we have measured.
How do I connect Ably MCP by usefulapi?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Ably MCP by usefulapi need an API key?
No. Ably MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 15 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Ably MCP by usefulapi?
It answers our handshake in 160 ms on average, which is faster than 80% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Ably MCP by usefulapi open source?
The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at ably.usefulapi.io, which runs on its operator's own terms.