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Research tool

Octagon

Read source-linked prediction-market research, compare model probabilities with prices and access the analysis through reports, API, MCP or a trading CLI.

3.5/ 5Editorial rating0 user reviews
Visit official siteoctagonai.co
Available on
Web, API, MCP, CLI
Pricing
Plus, annual billing: $17/month equivalent · Pro, annual billing: $41/month equivalent · Enterprise: Custom
Availability: public

Screenshots and interface

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Octagon Ai — API

What is Octagon?

Octagon combines research reports with structured prediction-market data. Each report focuses on an event and compares an estimated probability with the market price. The broader workspace adds news, thematic baskets and a trust score, while developer interfaces let you incorporate the research into a custom process.

Who it is for

  • Researchers who want cited event analysis
  • Traders comparing a model view with market prices
  • Developers adding research to agents or trading tools

Features and coverage

Available on
Web, API, MCP, CLI
Markets & venues
Polymarket, Kalshi
Research topics
Cited research, Model probabilities
  • Event research

    Read summaries, probability estimates and linked supporting sources.

  • Model-price comparison

    See the difference between the model estimate and market-implied probability.

  • Research news

    Follow market moves and open the report behind them.

  • Trust Index

    Inspect a score combining market integrity and trade quality.

  • Thematic baskets

    Review a thesis expressed through several sized Kalshi contracts.

  • REST API

    Search markets, inspect clusters and retrieve ranked edge data.

  • MCP and SDK

    Integrate research with compatible AI clients and agents.

  • Trading CLI

    Use the terminal workflow for research and supported trading actions.

Workflows with Octagon

Research a market

Open its report, inspect the cited evidence and compare the model estimate with the current contract price.

Review a basket

Read the thesis, check each contract’s rules and inspect how the legs are sized.

Integrate with an agent

Create an API key, choose MCP or REST and account for per-call credit use.

Pricing and total cost

Reports are publicly browsable. Paid API and agent access includes a 15-day trial.

Plus, annual billing

$17/month equivalent

  • 200 credits/month
  • Agent access
  • MCP and API keys

Pro, annual billing

$41/month equivalent

  • 600 credits/month
  • Historical prediction-market reports

Enterprise

Custom

  • Team access and customized workflows

Fees and usage costs

  • 500 extra credits cost $50.
  • Prediction-market agents use 3 credits/call; public-market agents use 1 and deep research uses 2.

Getting started

Before you start: The public site covers Polymarket and Kalshi, but several documented endpoints and basket workflows are Kalshi-specific.

  1. Browse a report for a market you follow.
  2. Inspect the sources and model-versus-price comparison.
  3. Choose a paid plan only for the access or volume you need.
  4. Create an API key or connect an MCP client.
  5. Track credit use by agent type.

Useful links

    What to check

    • The public site covers Polymarket and Kalshi, but several documented endpoints and basket workflows are Kalshi-specific.
    • The displayed annual prices require annual billing.
    • Basket backtests are hypothetical results, separate from executed account performance.
    • Model edge is a disagreement with price, not an observed trading return.

    A closer look

    Ratings & reviews

    Write a review
    Editorial rating
    3.5/ 5
    0 user reviews
    Polytoolhub editorial

    Our take on Octagon

    Source-linked reports and multiple developer interfaces support an inspectable research workflow. Model-price divergence is only an estimate, and some documented workflows are limited to Kalshi despite broader site coverage.

    Based on documented features, setup and access terms. How we rate

    User reviews 0

    The main score switches to user ratings after 5 published reviews.

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    Frequently asked questions about Octagon

    Can I read reports without subscribing?

    Yes. Public report browsing is offered free.

    What does edge mean here?

    The model probability minus the market probability.

    How many credits does a prediction-market call use?

    Three credits.

    Does Pro add historical reports?

    Yes. That is one of its listed additions.