kalshi

kalshi is a skill for Claude Code from Outsharp/shipp-skills. It costs 40 tokens per session (8,520 once invoked), scanned A, original, Apache-2.0.

A programming interface for Kalshi, a regulated exchange where people trade contracts on whether real-world events will happen. It covers market information, orders, portfolios, live updates, and historical data.

In plain words
What is it for?
Reading markets and historical data, placing or managing trades, viewing portfolios, and receiving live market updates through Kalshi’s API.
Why use it?
It gives software access to Kalshi trading and account data instead of requiring those tasks to be done through the website. The add-on requires checking Kalshi’s current official documentation before building with it.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Reading markets and historical data, placing or managing trades, viewing portfolios, and receiving live market updates through Kalshi’s API.

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Install with agentmods
npx agentmods add skills/outsharp/shipp-skills/kalshi
Install

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.

Any agent
npx skills add Outsharp/shipp-skills --skill kalshi
Clone the repo
git clone --depth 1 https://github.com/Outsharp/shipp-skills

Made for: Claude Code.

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.

agentmods badge for kalshi

README.md
[![agentmods](https://agentmods.dev/badge/skills/outsharp/shipp-skills/kalshi.svg)](https://agentmods.dev/skills/outsharp/shipp-skills/kalshi)
Your own site
<a href="https://agentmods.dev/skills/outsharp/shipp-skills/kalshi"><img src="https://agentmods.dev/badge/skills/outsharp/shipp-skills/kalshi.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 8,520 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00040 $0.08520
Opus 5 $0.00020 $0.04260
Sonnet 5 $0.00008 $0.01704
Haiku 4.5 $0.00004 $0.00852

Measured 8d ago against content hash 516f35f8063e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

kalshi 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 8d 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.

- Bash(curl:*)
skills/kalshi/SKILL.md · 602 lines

How it starts

The opening of the file, as written. The whole thing — 602 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Kalshi API

Kalshi is a CFTC-regulated prediction market exchange where users trade on the outcomes of real-world events.

Check this skill and the official documentation FREQUENTLY. The canonical machine-readable index of all docs lives at:

https://docs.kalshi.com/llms.txt

Always consult llms.txt to discover every available page before building. It is the single source of truth for endpoint references, SDK docs, WebSocket channels, FIX protocol details, and getting-started guides.


Key Concepts (Glossary)

Term Definition
Market A single binary outcome contract (Yes / No) with prices in cents (1–99¢).
Event A collection of related markets representing a real-world occurrence (e.g., an election, a weather reading).
Series A template for recurring events that share the same structure and rules (e.g., "Daily Highest Temp in NYC").
Orderbook Bids only — in binary markets a YES bid at X¢ is equivalent to a NO ask at (100−X)¢.
Fill A matched trade on one of your orders.
Settlement The final resolution of a market (Yes or No) after determination.
Multivariate Event A combo event created dynamically from a multivariate event collection.

Full glossary: https://docs.kalshi.com/getting_started/terms.md


Base URLs

Environment REST API WebSocket
Production https://api.elections.kalshi.com/trade-api/v2 wss://api.elections.kalshi.com/trade-api/ws/v2
Demo https://demo-api.kalshi.co/trade-api/v2 wss://demo-api.kalshi.co/trade-api/ws/v2

Note: Despite the elections subdomain, the production URL serves ALL Kalshi markets — economics, weather, tech, entertainment, etc.

Demo environment info: https://docs.kalshi.com/getting_started/demo_env.md


Documentation & References

All detailed examples, request/response schemas, and walkthroughs live in the official docs. Always consult these before building:

Read the full file on GitHub · 602 lines

Files

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.

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. 8d ago First seen · 602 lines · 40 tokens per session scan A 516f35f8063e

Subscribe to this mod's changes

kalshi is a skill published in the GitHub repository Outsharp/shipp-skills (4 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 40 tokens to every session and 8,520 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 2026-08-31.

Related

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