Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
Wrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/spartanlabsxyz/simmer-sdk/simmer-mcp-setup)<a href="https://agentmods.dev/skills/spartanlabsxyz/simmer-sdk/simmer-mcp-setup"><img src="https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/simmer-mcp-setup/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/spartanlabsxyz/simmer-sdk/simmer-mcp-setup"><img src="https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/simmer-mcp-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00087 | $0.10164 |
| Opus 5 | $0.00044 | $0.05082 |
| Sonnet 5 | $0.00017 | $0.02033 |
| Haiku 4.5 | $0.00009 | $0.01016 |
Grade A, and why
simmer-mcp-setup scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 639 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Simmer MCP Setup
One-shot bootstrap that wires the Simmer MCP server into your agent runtime. Read-once, run-once — after this completes, the skill itself isn't needed again.
What the Simmer MCP is (and isn't)
The Simmer MCP gives your agent raw market/trade tools plus a small pinned catalog of core Simmer skills it can invoke as tools. Strategy skills such as polymarket-copytrading, polymarket-fast-loop, and kalshi-weather-trader install on demand from ClawHub instead of shipping inside the npm package.
What this MCP is for: querying markets, checking account state, placing guarded direct trades, and running the core bundled Simmer playbooks through your agent. For situational strategies, ask the agent to install the current ClawHub skill first (for example, clawhub install polymarket-copytrading) and then follow that skill's instructions. Real trades land on the configured venue — paper sim by default, real venues require an explicit triple opt-in (dry_run=false + venue=polymarket|kalshi + SIMMER_MCP_ALLOW_LIVE=true env var on the MCP server).
Raw trade primitives (added in MCP v3.3.0): the MCP now exposes raw primitives as standalone tools alongside the per-skill executors — simmer_get_markets, simmer_get_market_context, simmer_get_briefing, simmer_trade, simmer_cancel_order, and get_portfolio/get_positions/get_expiring_positions. So ad-hoc operations like "show me Polymarket markets for the world cup" or "place a $2 paper YES on this market" now work directly through MCP. simmer_trade is paper-by-default — live execution needs the triple gate (dry_run=false + a live trading_venue + SIMMER_MCP_ALLOW_LIVE=true). The Python SDK still offers the fullest primitive surface (client.trade(), client.get_briefing(), etc.) for custom logic.
So: MCP and SDK are different shapes, both legitimate. MCP runs pre-built strategies and raw primitives through your agent with safety defaults; the SDK builds custom logic with full primitive access.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago Changed · +11 lines fd380f6a4c6f
- 6d ago Changed · +337 lines · +4 tokens per session 0103efa2b904
- 12d ago First seen · 291 lines · 83 tokens per session scan F f0efeb3629d4
simmer-mcp-setup is a skill published in the GitHub repository SpartanLabsXyz/simmer-sdk (48 stars, last pushed yesterday), licensed MIT. It adds 87 tokens to every session and 10,164 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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