simmer-sdk: Instructions file for Codex

AGENTS.md

simmer-sdk AGENTS.md is an instructions file for Codex, OpenCode from SpartanLabsXyz/simmer-sdk. It costs 767 tokens per session, scanned A, original, MIT.

Repository instructions for AI coding agents and reviewers working on the public Simmer Python SDK, a software library for simulated and real prediction-market trading.

In plain words
What is it for?
Checking pull requests and writing code that uses SimmerClient, formats simulated and real-market amounts, and retrieves markets within the supported recent-data window.
Why use it?
They prevent changes that expose secrets, format currencies incorrectly, or put real orders at risk. They also clarify how client-wide paper-versus-real execution and recent market discovery must work.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions AGENTS.md.

This is SpartanLabsXyz/simmer-sdk's own configuration. It tells Codex and OpenCode how to work on simmer-sdk itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything simmer-sdk configures →

Reuse

Borrowing it

Nothing to install: this file belongs to SpartanLabsXyz/simmer-sdk. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/SpartanLabsXyz/simmer-sdk/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/SpartanLabsXyz/simmer-sdk

Made for: Codex, OpenCode.

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Per session 767 This file is loaded in full into every session.
When invoked 767 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00767 $0.00767
Opus 5 $0.00383 $0.00383
Sonnet 5 $0.00153 $0.00153
Haiku 4.5 $0.00077 $0.00077

Measured 9d ago against content hash 1b96f8e0f710, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

simmer-sdk AGENTS.md 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 9d 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.

AGENTS.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Simmer SDK

Conventions for AI coding agents and reviewers working in this repo. This is the public Python SDK + official skills for Simmer. See CONTRIBUTING.md for PR hygiene and README.md for the client usage patterns. This file captures the non-obvious rules a reviewer should enforce.

This repo is public

No secrets, API keys, internal risk thresholds, scoring algorithms, or proprietary strategy logic. Examples use sk_live_... / sk_test_... placeholders, never real keys.

Currency formatting

  • Simmer (simulated) venue: $SIM suffix100.00 $SIM.
  • Real venues (Polymarket/Kalshi): $ prefix$100.00.
  • Never $SIM100.00 or $100.00 $SIM.
  • When a value or API field could be either, disambiguate by prefixing the field name with sim_ or usdc_.

live is a constructor arg, not a per-trade flag

SimmerClient(..., live=False) controls paper-vs-real execution for the whole client. live=False previews against the simulated path and places no real order. Don't add a per-call live= parameter to trade methods — flag any PR that does.

Market discovery is recency-windowed

Unfiltered get_markets() returns the newest ~1,000 active markets, not the full set. Code that needs broad coverage must filter (sort="volume", q=, tags=). A loop that assumes get_markets() sees every market is a bug.

Wallet signing model

  • The SDK signs locally — via OWS (OWS_WALLET) or a raw WALLET_PRIVATE_KEY. The Simmer server never holds or sees an external wallet's private key.
  • Endpoints that need a browser session token (withdraw, set-allowances, place-order-server, wallet create) cannot be called from the SDK or an API key. SDK code must not pretend to; route users to the dashboard instead.
  • DW (deposit-wallet) trading requires activation first (activate_polymarket_dw, and activate_combo_dw for parlays) before trade() / place_combo() will work.

Examples must match real client signatures

Read the full file on GitHub · 66 lines

Changes

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.

  1. 9d ago First seen · 66 lines · 767 tokens per session scan A 1b96f8e0f710

Subscribe to this mod's changes

simmer-sdk AGENTS.md is an instructions file published in the GitHub repository SpartanLabsXyz/simmer-sdk (48 stars, last pushed today), licensed MIT. It adds 767 tokens to every session, about $0.0038 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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