0.1¢ per search

Prediction market API

Market odds for your agent, paid per call.

Let your agent search Polymarket for live odds, or check the same question on Polymarket, Kalshi and Limitless.

One TaskFuel account and prepaid balance. Connect your agent and it shows the price before it pays.

Start for FreeWhat it can do
No card required
Works with

Prediction market API: what your agent gets.

The Polymarket search and the three-venue search were each tested once with the same question. The Kalshi markets tool is priced here but was not run in our test.

  • Polymarket search

    Open markets matching a question. Our test returned ten markets with odds, bid and ask, spread, volume and liquidity.

    $0.001 / search
  • Three-venue search

    One search across Polymarket, Kalshi and Limitless. Our test returned 11 markets, each tagged with its venue.

    $0.012 / search
  • Kalshi markets

    Browse Kalshi markets by status, event or ticker.

    $0.0025 / request

Polymarket search, tested.

We searched Polymarket for the Fed rate cut question. Otto returned ten open markets with live odds, spread and volume.

TaskFuel test run ·

Charged $0.001

Your agent asked

Find the odds of a Fed rate cut on Polymarket
Data from
Otto

What came back

Markets returned
10 open markets
Top match
Will no Fed rate cuts happen in 2026?
Yes odds on the top match
96.4%
Per market
Odds, bid and ask, spread, volume, liquidity, end date, link

One search of open Polymarket markets. Odds change by the minute.

Try the API request Quote first, then run

1. Check the price

Use your TaskFuel API key as TASKFUEL_API_KEY in your terminal or server. Keep it out of browser code. This request checks the price without paying.

This is the exact market search from the test. Odds move constantly, so a new search returns different numbers.

curl --fail-with-body https://app.taskfuel.ai/v1/call \
  -H "Authorization: Bearer $TASKFUEL_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-binary @- <<'TASKFUEL_REQUEST'
{
  "url": "https://x402.ottoai.services/pm-search?query=fed%20rate%20cut",
  "method": "GET",
  "dryRun": true
}
TASKFUEL_REQUEST

2. Run the request

Review amount_usd in the quote. To pay and run, change dryRun to false and add maxAmountUsd with that approved amount inside the same JSON object. Keep the inputs unchanged; this limit applies to one call.

3. Read the result

Read data.markets[]: question, outcomes[].probability, bestBid, bestAsk, spread, volumeTotalUsd, endDate and url. The odds are current market prices, not a forecast of what will happen.

Setup and API reference · Job polling and timeout recovery

Try it in your next task.

Sign in to TaskFuel and connect your existing agent. Ask it to look up prediction market odds and show the price before it makes the paid call.

01

Name the task

Tell your agent what the output needs to contain.

02

See the price

Your agent shows the provider and price before spending.

03

Review the response

Check the output against your task. The call reports its cost and remaining balance.

When to use it.

Checking the odds

Read the odds behind a headline.

Search a question such as a Fed rate cut and read the probability, spread and volume.

Comparing venues

Find the same question on three venues.

A three-venue search tags each hit with its venue. Kalshi’s yes and no prices can add up to more than 1.

Handing over the source

Link to the market itself.

Each result carries a link to its venue page, so an agent can give the reader the original market.

Providers for this task.

CapabilityProvidersReference
Prediction marketsBlockRun, 2s, Otto AI, AnyAPICompare providers · Endpoint data

Good Questions.

Do I need a Polymarket or Kalshi account?

No. Your agent pays from your TaskFuel balance, so there is nothing else to sign up for.

What does a prediction market API cost here?

Our Polymarket search cost $0.001 and a three-venue search cost $0.012 on 30 October 2026. Your agent shows the price for your own request before it pays.

Which markets does it cover?

The Polymarket search covers open Polymarket markets. The three-venue search covers Polymarket, Kalshi and Limitless Exchange.

Are the odds live?

They are a snapshot from the moment of the call.

Can this place trades?

No. These tools read market data. Trading and wallet actions are not included.

Your agent can do things it couldn’t this morning.

$1 in free credit, no card required.

Start for Free