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Annalist Prediction Market Outcomes List
x402
Annalist Prediction Market Outcomes List is a paid API for AI agents from api.annalist.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-14).
Lists prediction market outcomes with implied probabilities, 24h volume, and searchable titles across categories like sports, price, IPO, policy rate, and awards
Price / call$0.02
Success—
StatusUnknown
How this service works
Signed data for AI agents, paid per call over x402. Hyperliquid crowd state, smart money and liquidations with what historically happened next, plus independent checks of x402 services and MCP servers.
Output
A JSON object containing a summary with total market count and an array of outcome objects, each with an id, title, 24h USD volume, and implied probability (0-1 float representing crowd consensus on the event occurring).
Example use cases
Fed rate decision crowd sentiment
“Search prediction markets for any outcomes related to the Fed and show me the implied probabilities — I want to know what the crowd thinks will happen at the next rate decision.”
IPO valuation market discovery
“Find me all IPO-category prediction market outcomes on Annalist and list them with their current implied probabilities and trading volume.”
Sports event outcome probabilities
“List the current sports prediction market outcomes available and tell me which ones have the highest implied probability — I'm looking for anything with significant 24-hour volume.”
Technical details
Endpoint
GEThttps://api.annalist.dev/v1/outcomes/list?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to discover or search available prediction market outcomes and their crowd-implied probabilities, especially when filtering by category (sports, price, IPO, policy rate, awards) or searching by keyword. Prefer this over generic news or sentiment APIs when you specifically want market-priced probability signals from real money on the line.
Side effects
- Invalid category enum value returns error — must be one of: sports, price, ipo, policy_rate, awards, other
- No results returned if search query 'q' matches no outcome titles
- Payment failure via x402 if USDC balance is insufficient ($0.02 per call)
- Empty outcomes array if no markets are currently active in the requested category
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"summary": {
"markets": 327
},
"outcomes": [
{
"id": 8573,
"title": "Anthropic first-day market cap above $1500B",
"volume_24h_usd": 318704,
"implied_probability": 0.81
}
]
}
}
}Tags
x402
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