Polymarket Events
Prediction market events by topic — page through open or closed Polymarket events under one tag such as politics, crypto, economy, geopolitics or ai, each with status, dates, volume, liquidity and markets with current YES prices. Use to survey what a prediction market is pricing on a subject.
TradingLiveeip155:8453Exactvia cdp
Prediction-marketsPolymarketEvents-by-topicForecastingOdds
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$31.37
Verified settled volume
1,700 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-20 21:16Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"hint": "This endpoint requires x402 payment. The price and payment options are in the PAYMENT-REQUIRED response header (x402 v2). Pay with an x402 client, then retry to receive the data.",
"llms": "https://polymarket.use.x402atlas.com/llms.txt",
"error": "payment_required",
"price": "$0.01 per call",
"method": "GET",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "10000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"tier": "standard",
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"merchant": "x402Atlas"
},
"payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"contact": {
"email": "support@x402atlas.com"
},
"openapi": "https://polymarket.use.x402atlas.com/openapi.json",
"resource": {
"url": "https://polymarket.use.x402atlas.com/events",
"tags": [
"prediction-markets",
"polymarket",
"events-by-topic",
"forecasting",
"odds"
],
"mimeType": "application/json",
"description": "Prediction market events by topic — page through open or closed Polymarket events under one tag such as politics, crypto, economy, geopolitics or ai, each with status, dates, volume, liquidity and markets with current YES prices. Use to survey what a prediction market is pricing on a subject.",
"serviceName": "Polymarket Events"
},
"x402Version": 2,
"documentation": "https://polymarket.use.x402atlas.com/docs"
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0x8C12…Df1b2. The signed payment is good for 5 minutes.
- Paid to
- 0x8C12…Df1b2
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
10000units
on Polygon · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x8C12…Df1b2
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
10000units
on Arbitrum · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x8C12…Df1b2
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
10000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- ASt6xv…tXrNQ
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "10000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"tier": "standard",
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"merchant": "x402Atlas"
},
"payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"tag": "geopolitics",
"limit": 10
}
},
"output": {
"type": "json",
"example": {
"tag": "geopolitics",
"as_of": "2026-10-20T14:23:40Z",
"count": 3,
"closed": false,
"events": [
{
"slug": "china-x-india-military-clash-by-december-31",
"tags": [
"geopolitics",
"politics",
"china",
"india",
"world"
],
"title": "China x India military clash by...?",
"status": "open",
"volume": 333200.36,
"markets": [
{
"slug": "china-x-india-military-clash-by-june-30",
"status": "resolved",
"question": "China x India military clash by June 30?",
"yes_price": 0,
"group_title": "June 30"
},
{
"slug": "china-x-india-military-clash-by-december-31",
"status": "resolved",
"question": "China x India military clash by December 31?",
"yes_price": 0,
"group_title": "December 31"
},
{
"slug": "china-x-india-military-clash-by-december-31-2026",
"status": "open",
"question": "China x India military clash by December 31, 2026?",
"yes_price": 0.06,
"group_title": "December 31, 2026"
}
],
"end_date": "2027-01-01T04:59:00Z",
"liquidity": 14872.94,
"restricted": true,
"start_date": "2025-01-30T21:29:15.866418Z",
"volume_24h": 0,
"market_count": 3,
"open_interest": 23489.88
},
{
"slug": "natoeu-troops-fighting-in-ukraine-in-2025",
"tags": [
"ukraine",
"politics",
"geopolitics",
"russia",
"nato",
"eu",
"world",
"trump-zelenskyy",
"security-guarantee"
],
"title": "NATO/EU troops fighting in Ukraine by...?",
"status": "open",
"volume": 487785.43,
"markets": [
{
"slug": "natoeu-troops-fighting-in-ukraine-in-2025",
"status": "resolved",
"question": "NATO/EU troops fighting in Ukraine in 2025?",
"yes_price": 0,
"group_title": "December 31, 2025"
},
{
"slug": "natoeu-troops-fighting-in-ukraine-by-december-31-2026",
"status": "open",
"question": "NATO/EU troops fighting in Ukraine by December 31, 2026?",
"yes_price": 0.0325,
"group_title": "December 31, 2026"
},
{
"slug": "natoeu-troops-fighting-in-ukraine-in-june-30-2026",
"status": "resolved",
"question": "NATO/EU troops fighting in Ukraine in June 30, 2026?",
"yes_price": 0,
"group_title": "June 30, 2026"
}
],
"end_date": "2027-01-01T04:59:00Z",
"liquidity": 30332.17,
"restricted": true,
"start_date": "2025-01-31T23:41:04.062553Z",
"volume_24h": 2042.63,
"market_count": 3,
"open_interest": 4008.39
},
{
"slug": "ukraine-recognizes-russian-sovereignty-over-ukrainian-territory-in-2025",
"tags": [
"politics",
"geopolitics",
"foreign-policy",
"ukraine",
"trump-presidency",
"trump",
"putin",
"zelensky",
"world",
"trump-putin"
],
"title": "Ukraine recognizes Russian sovereignty over its territory by...?",
"status": "open",
"volume": 2656688.16,
"markets": [
{
"slug": "ukraine-recognizes-russian-sovereignty-over-ukrainian-territory-in-2025",
"status": "resolved",
"question": "Ukraine recognizes Russian sovereignty over its territory by December 31, 2025?",
"yes_price": 0,
"group_title": "December 31, 2025"
},
{
"slug": "ukraine-recognizes-russian-sovereignty-over-its-territory-by-june-30-2026",
"status": "resolved",
"question": "Ukraine recognizes Russian sovereignty over its territory by June 30, 2026?",
"yes_price": 0,
"group_title": "June 30, 2026"
},
{
"slug": "ukraine-recognizes-russian-sovereignty-over-its-territory-by-december-31-2026",
"status": "open",
"question": "Ukraine recognizes Russian sovereignty over its territory by December 31, 2026?",
"yes_price": 0.014,
"group_title": "December 31, 2026"
}
],
"end_date": "2027-01-01T04:59:00Z",
"liquidity": 36369.66,
"restricted": true,
"start_date": "2025-02-06T23:19:09.390407Z",
"volume_24h": 0,
"market_count": 3,
"open_interest": 28224.34
}
],
"source": [
"gamma-api.polymarket.com"
],
"next_cursor": "v9zNJPycgDLfvSTk0WLOPMFwxhF5b1_5kYI4rQJYObJ7InYiOjEsImsiOiJldmVudHMiLCJvaCI6IjRmNTNjZGExOGMyYmFhMGMwMzU0YmI1ZjlhM2VjYmU1ZWQxMmFiNGQ4ZTExYmE4NzNjMmYxMTE2MTIwMmI5NDUiLCJrZXlzIjpbeyJ0Ijoic3RyaW5nIiwidiI6IjI1ODI3In1dfQ",
"price_basis": "market price in USDC per share; not a calibrated probability"
}
}
},
"tags": [
"prediction-markets",
"polymarket",
"events-by-topic",
"forecasting",
"odds"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"tag"
],
"properties": {
"tag": {
"type": "string",
"pattern": "^[a-z0-9][a-z0-9-]{0,127}$",
"description": "Tag slug, e.g. politics, crypto, economy; omitted runs the example"
},
"limit": {
"type": "integer",
"default": 20,
"maximum": 50,
"minimum": 1
},
"closed": {
"type": "boolean",
"default": false,
"description": "true lists closed and resolved events"
},
"cursor": {
"type": "string",
"maxLength": 512,
"description": "next_cursor of the previous page"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"as_of",
"source",
"price_basis",
"tag",
"closed",
"count",
"events",
"next_cursor"
],
"properties": {
"tag": {
"type": "string"
},
"note": {
"type": "string",
"description": "Present only on an empty response"
},
"as_of": {
"type": "string",
"format": "date-time",
"description": "Retrieval time, UTC"
},
"count": {
"type": "integer"
},
"closed": {
"type": "boolean"
},
"events": {
"type": "array",
"items": {
"type": "object",
"required": [
"slug",
"title",
"status",
"start_date",
"end_date",
"volume",
"volume_24h",
"liquidity",
"open_interest",
"restricted",
"tags",
"market_count",
"markets"
],
"properties": {
"slug": {
"type": "string"
},
"tags": {
"type": "array",
"items": {
"type": "string"
},
"description": "Tag slugs; pass one to /events?tag="
},
"title": {
"type": "string"
},
"status": {
"enum": [
"upcoming",
"open",
"closed",
"archived"
],
"type": "string"
},
"volume": {
"type": [
"number",
"null"
],
"description": "Lifetime USDC volume across markets"
},
"markets": {
"type": "array",
"items": {
"type": "object",
"required": [
"slug",
"question",
"yes_price",
"status"
],
"properties": {
"slug": {
"type": "string",
"description": "Pass to /market, /history or /book"
},
"status": {
"enum": [
"upcoming",
"open",
"paused",
"closed",
"resolved",
"archived"
],
"type": "string"
},
"question": {
"type": "string"
},
"yes_price": {
"type": [
"number",
"null"
],
"description": "USDC per share, 0-1"
},
"group_title": {
"type": "string",
"description": "Label inside a multi-outcome event; absent on standalone markets"
}
},
"additionalProperties": false
},
"description": "At most 10; /event/{slug} lists all"
},
"end_date": {
"type": "string",
"description": "RFC3339 scheduled end"
},
"liquidity": {
"type": [
"number",
"null"
],
"description": "USDC"
},
"restricted": {
"type": "boolean",
"description": "true when trading is geo-restricted; reading is unaffected"
},
"start_date": {
"type": "string",
"description": "RFC3339"
},
"volume_24h": {
"type": "number",
"description": "USDC traded in the last 24h; 0 when none"
},
"market_count": {
"type": "integer",
"description": "Markets in the event, including any not listed"
},
"open_interest": {
"type": [
"number",
"null"
],
"description": "USDC"
}
},
"additionalProperties": false
}
},
"source": {
"type": "array",
"items": {
"type": "string"
},
"description": "Upstream hosts used"
},
"next_cursor": {
"type": "string",
"description": "Pass as cursor for the next page; empty on the last page"
},
"price_basis": {
"type": "string",
"description": "How to read every price field"
}
},
"additionalProperties": false
}
}
}
}
},
"category": "finance"
}
}Provenance
- Seen in the source catalog
- 2026-10-20 21:16Z
- Last indexed by Roundhouse
- 2026-10-23 06:30Z
- Last enriched (probe, favicon, geo)
- 2026-10-20 18:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Polymarket Events and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Polymarket%20Events' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://polymarket.use.x402atlas.com/events, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.