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Data & APIs

Simmer

⬇ 10K downloads ★ 23 stars Version 1.24.9 Rank #482 of 10,000+
↓ Download .zip (1.24.9) Open in browser → View on ClawHub →

What this skill does

The prediction market interface for AI agents. Trade Polymarket and Kalshi through one API with self-custody wallets, safety rails, and smart context.

Simmer is part of the Data & APIs category — data and API skills that fetch, query, and work with external data sources. You can install it on its own or alongside other data & apis skills from the OpenClaw catalog.

Simmer is ranked #482 by downloads in the OpenClaw skill catalog (10K total downloads, 23 stars). It belongs to the Data & APIs category alongside 999 other top-10000 skills.

How to install Simmer

The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:

  1. Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
  2. Open the in-app Skills panel.
  3. Search for simmer and click Install.
  4. The skill activates automatically when an incoming message matches its description.

Install from the command line

If you already run the OpenClaw CLI, add Simmer with a single command:

openclaw skills add simmer

This pulls simmer from ClawHub and installs it into ~/.openclaw/skills/simmer/. Restart the OpenClaw gateway afterwards so the new skill is discovered.

How to use Simmer

Once installed, Simmer activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.

Manual install (advanced)

If you prefer manual installation:

  1. Click the Download .zip button above to grab simmer-1.24.9.zip directly from our S3 mirror.
  2. Unzip into ~/.openclaw/skills/simmer/ (create the directory if it does not exist).
  3. Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.

Frequently asked questions

How do I install Simmer?

Install Simmer in the OpenClaw Easy desktop app by opening the Skills panel, searching for simmer, and clicking Install. From a terminal you can run: openclaw skills add simmer. Either way the skill is placed in ~/.openclaw/skills/simmer/.

Is Simmer free?

Yes. Simmer is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.

What does Simmer do?

The prediction market interface for AI agents. Trade Polymarket and Kalshi through one API with self-custody wallets, safety rails, and smart context.

Related: more data & apis skills

If Simmer looks useful, you may also want to check out other data & apis skills in the OpenClaw catalog:

Browse the full OpenClaw skill catalog

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Install Simmer and 10,000+ other OpenClaw skills in one click. Free, open-source, runs locally on macOS & Windows.

Download for macOS & Windows

Free, open-source · Apache-2.0 · Works with Claude, ChatGPT, Gemini, or local Ollama models