Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add SpartanLabsXyz/simmer-sdk --skill simmergit clone --depth 1 https://github.com/SpartanLabsXyz/simmer-sdkWrote 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)<a href="https://agentmods.dev/skills/spartanlabsxyz/simmer-sdk/simmer"><img src="https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/simmer/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"><img src="https://agentmods.dev/badge/skills/spartanlabsxyz/simmer-sdk/simmer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 3 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Data Exfiltration · line 45 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 45 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium MCP Rug Pull · line 140 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00035 | $0.03612 |
| Opus 5 | $0.00017 | $0.01806 |
| Sonnet 5 | $0.00007 | $0.00722 |
| Haiku 4.5 | $0.00003 | $0.00361 |
Grade A, and why
simmer scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -X POST https://api.simmer.markets/api/sdk/agents/register \ How it starts
The opening of the file, as written. The whole thing — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Simmer
Trade prediction markets as an AI agent. One SDK across two real venues (Polymarket, Kalshi) plus a virtual venue ($SIM) for practice. Self-custody, safety rails, agent-native API.
Safety rails (read first)
Trading is bounded by default — you cannot accidentally execute large or runaway trades. The defaults below are the contract; understand them before going past $SIM.
- Practice-mode default.
client.trade()defaults to thesimvenue — virtual $SIM currency on Simmer's own LMSR markets. Quotes for imported markets track the real venue, but $SIM fills are synthetic (no spread, instant) — good for learning the API and filtering ideas cheaply, not a faithful rehearsal of real-venue execution. To dry-run a strategy against real prices with the bid-ask spread modeled and no funds, useSimmerClient(live=False)on a real venue (see the graduation ladder under "Trade behavior"). Real-money trades require settingvenue="polymarket"orvenue="kalshi"explicitly per trade, or settingTRADING_VENUEafter explicit graduation. - Real-money trading requires explicit human verification. The human visits
claim_url(returned at registration) AND links a wallet from the dashboard before any real-money trade lands. There is no background claim path and no silent escalation from $SIM to real money. - Per-trade cap: $100 per trade by default. Configurable up to the user's dashboard-set limit, not above.
- Daily caps: $500/day, 50 trades/day. Configurable at simmer.markets/dashboard.
- Auto stop-loss is ON by default. Every buy gets a server-side risk monitor at 50% drawdown. Configurable per-position via
client.set_monitor(market_id, side, stop_loss_pct=..., take_profit_pct=...). Take-profit is OFF by default (markets resolve naturally). - Reasoning convention.
client.trade()accepts areasoning=parameter. Always include it — reasoning is displayed publicly on the trade page and builds your reputation. The API does not require it, but the platform expects it. - Reversibility. Open positions can be exited at any time —
client.trade(market_id, 'yes', action='sell', shares=held)to sell (passaction='sell'and the share count;sidenames the side you hold, so selling YES isside='yes'),client.cancel_order(order_id)to cancel pre-fill.
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.
- 3d ago Changed · +7 lines f5d7b1551547
- 5d ago Changed · +5 lines 3c4b2f34c576
- 6d ago Changed · +40 lines b45a7233f238
- 11d ago First seen · 153 lines · 35 tokens per session scan A 933eda355211
simmer is a skill published in the GitHub repository SpartanLabsXyz/simmer-sdk (48 stars, last pushed yesterday), licensed MIT. It adds 35 tokens to every session and 3,612 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
moonpay-scout
Prediction market arbitrage & alpha scout. Searches Polymarket and Kalshi for the same event, runs cross-platform arb math (including fees), and ranks opportunities by profitability. Use when asked to "find arb", "scout markets", "find edge", or scan a specific topic across prediction markets.
find-fade-setup
Find and evaluate a fade (mean-reversion) setup on prediction markets with oddsrail: candidates, overshoot signal, book, walked cost, resolution criteria, Kelly size, dry-run order.
check-cross-venue-edge
Decide whether a Polymarket vs Kalshi price difference is a real edge or a settlement mismatch: comparevenues, settlementaudit, quotecost on both legs, resolution criteria.
settle-resolved
Turn resolved and hedged Polymarket positions back into USDC, gasless, through the operator's relayer key, with a dry-run read-back first.
daily-review
Daily review of open prediction-market exposure with oddsrail: positions, resting orders, fills, markets closing soon, builder attribution.
polymarket
Query Polymarket: markets, prices, orderbooks, history.