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Ably Pub/Sub

Realtime messaging platform. Create an app and an API key with chosen capabilities; clients should use token auth issued by your server.

Researched · not yet run liveLast researched 25 October 2026 · Ably · provider site

Researched, not yet run live. Built from the provider’s official pages (linked below). A person hasn’t walked this flow end to end yet, so check each step against the source.
Do this with verapliJSON for agents

Steps

Steps marked “human step” are ones only you can do: verapli never signs in, submits, pays or accepts terms for you.

  1. Sign in or create a Ably account

    Sign in to Ably. If you have no account yet, you create it yourself; verapli does not create accounts.

    • Guided by hand
    • Human step: You sign in

    Where: https://ably.com/login

  2. Create an app

    In the Ably dashboard create an app.

    • Guided by hand
    • Human step: You press submit
    • After: Sign in or create a Ably account

  3. Create an API key

    In the app's API Keys tab click Create a new API key, name it and choose capabilities (optionally revocable tokens or channel scoping). Keep it server-side; give clients short-lived tokens.

    • Guided by hand
    • Human step: You press submit
    • After: Create an app

    verapli captures ABLY_API_KEY here by plain code: encrypted in your browser, never shown to AI.

Terms and gotchas

Plain-English summary, not legal advice. Each card links its source.

Worth knowingThe rules say

Keys stay server-side

Ably says never to use API keys in client-side code; issue tokens from your server instead. [1]

What you end up with

Env varSecretFormatWhat it is
ABLY_API_KEYsecretxxxxxx.xxxxxx:…Ably API key (appId.keyId:secret), server only. Env var name is a verapli convention.

Pricing

  • Free tier: 200 concurrent connections, 500 messages/second, 6M messages/month.
  • Costs: Standard $29/month plus usage.

Source [2]

For agents

The same entry as JSON: /api/v1/entries/ably/pubsub · requirements /api/v1/requirements/ably/pubsub · terms /api/v1/terms/ably/pubsub.

Remote MCP (read-only, no auth)
claude mcp add --transport http verapli https://verapli.com/mcp

> "What do I need for Ably Pub/Sub, and how long will it take?"
  → tools/call requirements { "provider_id": "ably/pubsub" }

Sources

  1. Ably docs - Authentication Key = app ID + key ID + secret; created in dashboard API Keys with capabilities, optional revocation or channel scoping; Control API can create keys; never use API keys in client-side code, use token auth (JWT) via authCallback · accessed 25 October 2026 · official
  2. Ably pricing Free plan 200 concurrent connections, 500 messages/second, 6M messages/month; Standard $29/month plus usage · accessed 25 October 2026 · official

Provider rules change. This page is generated from verapli registry version 2026.1025.316; spotted something out of date? Tell us. Ably is not affiliated with verapli.