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Agent skill

Related Market Spread

by Superior-Trade in Superior-Trade/superior-skills

A skill your agent uses when two Polymarket markets imply different probabilities for a linked outcome.

MITAuto-check passedBusiness, Finance & HR

Install Related Market Spread

skills CLI
$ npx skills add Superior-Trade/superior-skills --skill related-market-spread -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install Superior-Trade/superior-skills related-market-spread --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/Superior-Trade/superior-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/related-market-spread .claude/skills/related-market-spread && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
related-market-spread
GitHub stars
215
Token cost
~708 tokens
SKILL.md length
334 words
Files
1
Skills in repo
31
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when two Polymarket markets imply different probabilities for a linked outcome.

  • Works in 4 steps: Markets with different outcome mappings… → Resolution rules can shift, changing… → One leg may look tradable in backtest… → …
  • Two Polymarket markets imply different probabilities for a linked outcome
  • SKILL.md covers When to use, What the agent should look for, Backtest fit with filled data and Strategy logic, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Related Market Spread is an agent skill from Superior-Trade/superior-skills. Use when two Polymarket markets imply different probabilities for a linked outcome.

Its SKILL.md is about 710 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Business, Finance & HR, covering Trading and backtesting. It works with Polymarket. The repository describes itself as: Open agent skills and tool schemas for Superior Trade — build, backtest, and deploy trading strategies on Hyperliquid. The licence is MIT.

When your agent uses it

  • Two Polymarket markets imply different probabilities for a linked outcome
  • Tasks that involve Trading and backtesting

Example prompts

  • “/related-market-spread”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Markets with different outcome mappings can produce a real structural spread, not an inefficiency.
  2. Resolution rules can shift, changing what "discrepancy" means.
  3. One leg may look tradable in backtest and be unavailable or illiquid live.
  4. TradeTick replay cannot prove simultaneous execution across legs.

What it can do on your machine

Read from SKILL.md and the folder at commit 9d41db5. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are json).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Related Market Spread loads about 708 tokens when it runs. Until then it costs about 26 tokens; SKILL.md has 334 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~26
When it runs · the whole SKILL.md, loaded when a task matches
~708

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Superior-Trade/superior-skills at commit 9d41db5, republished under its MIT licence (© Superior-Trade). 334 words, ~708 tokens.

Download SKILL.mdSave it as .claude/skills/related-market-spread/SKILL.md (or your agent's skills folder).
name
related-market-spread
description
Use when two Polymarket markets imply different probabilities for a linked outcome.
metadata.version
0.1.0
metadata.updated
2026-06-17

When to use

Use this when the user asks for relative-value trades, discrepancy checks, linked outcomes, or questions like "this market is mispriced versus that one."

What the agent should look for

  • At least two canonical Polymarket markets from GET /context/markets?venue=polymarket.
  • Resolution logic that is genuinely comparable across the two markets.
  • Spread between filled-trade prices that is wide versus historical behavior.
  • Enough historical filled data on both markets for the requested backtest window.
  • Ability to enter and exit both legs (or acknowledge unavailable liquidities before entering).

Backtest fit with filled data

Partial fit. Backtests built from filled TradeTick data are useful for checking whether the spread relationship has widened and then compressed in history. They cannot guarantee simultaneous fills or full cross-book liquidity.

Use this as a generated archetype: the strategy should be adapted in code before use, not treated as a finished edge.

Strategy logic

Track the latest filled price for both legs. Enter when spread is above a threshold and exits when spread narrows or max holding duration expires.

Nautilus strategy shape

  • Subscribe to TradeTick for both instruments.
  • Keep the latest filled price per instrument.
  • Compute spread each tick using the latest values.
  • Enter and flatten only when spread thresholds are hit.
  • Manage stale-state safety (e.g., skip entries until both legs have recent fills).

Example strategyConfig

json
{
  "primary_instrument_id": "AUTO_FROM_MARKET_A",
  "secondary_instrument_id": "AUTO_FROM_MARKET_B",
  "spread_entry": 0.08,
  "spread_exit": 0.03,
  "order_size": 10,
  "max_holding_ticks": 120
}

Iteration knobs

KnobEffect
spread_entryHigher = only trade stronger relative-value discrepancies.
spread_exitLower = wait for fuller normalization before exiting.
max_holding_ticksLower = tighter time risk control if convergence does not happen.

Failure modes

  1. Markets with different outcome mappings can produce a real structural spread, not an inefficiency.
  2. Resolution rules can shift, changing what "discrepancy" means.
  3. One leg may look tradable in backtest and be unavailable or illiquid live.
  4. TradeTick replay cannot prove simultaneous execution across legs.

User-facing framing

"This is a relative-value archetype, not a guaranteed edge. It is built from filled TradeTick backtests and exact market slug discovery first, then adapted into custom NautilusTrader code before any deployment."

© Superior-Trade, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/related-market-spread of Superior-Trade/superior-skills.

Open the folder on GitHubat commit 9d41db5

Compare with similar skills

Related Market Spread next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Related Market Spread compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Related Market Spread this skillSuperior-Trade/superior-skills215—~708Automated safety check: PassMIT
Digital Oraclekomako-workshop/digital-oracle878—~5.9kAutomated safety check: PassMIT
Polyclawchainstacklabs/polyclaw3591 repos~2kAutomated safety check: PassApache-2.0
Polymarket TradingBlockRunAI/ClawRouter6.6k—~1.4kAutomated safety check: PassMIT
Dr Manhattanguzus/dr-manhattan204—~2kAutomated safety check: PassApache-2.0
Fintoolsecond-state/fintool316—~5.9kAutomated safety check: PassNone

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Works with

Categories

Questions about Related Market Spread

What does Related Market Spread do?

A skill your agent uses when two Polymarket markets imply different probabilities for a linked outcome. Related Market Spread is an agent skill from Superior-Trade/superior-skills. Use when two Polymarket markets imply different probabilities for a linked outcome.

When should I use Related Market Spread?

Related Market Spread fits situations like: two Polymarket markets imply different probabilities for a linked outcome; tasks that involve Trading and backtesting.

How do I install Related Market Spread in Claude Code?

Run `npx skills add Superior-Trade/superior-skills --skill related-market-spread -a claude-code`. Or copy the skill folder (skills/related-market-spread in Superior-Trade/superior-skills) into .claude/skills/related-market-spread in your project. Claude Code loads it when a task matches its description.

How do I install Related Market Spread in Codex?

Run `npx skills add Superior-Trade/superior-skills --skill related-market-spread -a codex`. Or copy the skill folder (skills/related-market-spread in Superior-Trade/superior-skills) into .agents/skills/related-market-spread in your project. Codex loads it when a task matches its description.

Can I use Related Market Spread in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Superior-Trade/superior-skills --skill related-market-spread -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/related-market-spread, .gemini/skills/related-market-spread, .github/skills/related-market-spread and .opencode/skills/related-market-spread in your project.

What does Related Market Spread need to run?

SKILL.md names no scripts, command-line tools or credentials: Related Market Spread is instructions for the agent only.

Does Related Market Spread access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Related Market Spread safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Related Market Spread use?

Related Market Spread is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Related Market Spread use?

About 708 tokens (SKILL.md is roughly 2.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Related Market Spread?

Skills that share tags, products or a category with Related Market Spread: Digital Oracle (komako-workshop/digital-oracle, 878 stars), Polyclaw (chainstacklabs/polyclaw, 359 stars), Polymarket Trading (BlockRunAI/ClawRouter, 6.6k stars) and Dr Manhattan (guzus/dr-manhattan, 204 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Related Market Spread?

Superior-Trade (a GitHub organization) maintains it in Superior-Trade/superior-skills, which has 215 GitHub stars. The repository holds 31 skills in this directory. The repository was last updated on September 10, 2026.

Source: Superior-Trade/superior-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.