Polymarket Intelligence API
Resolution Watch measures, on-chain, Polymarket/UMA resolution risk: when a market is disputed, does the answer actually change? Dispute-rate and flip-rate rank categories in opposite orders. Fact/base-rate, auditor posture, machine-readable for AI agents.
DataLiveeip155:8453Exactvia cdp
PolymarketPrediction-marketsUma-resolutionWatchlistBase
Calls · 30d
4↓ 13%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$8.40
Verified settled volume
147 settlements proven x402 by their on-chain EIP-3009 marker.
$0.050
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-07 10:17Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x7b13107779CfDA1bEba3289d0Fbe27310436f3E3The 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.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"iconUrl": "https://polym.uk/favicon.svg",
"version": "2"
},
"payTo": "0x7b13107779CfDA1bEba3289d0Fbe27310436f3E3",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.polym.uk/resolution-watchlist",
"tags": [
"polymarket",
"prediction-markets",
"uma-resolution",
"watchlist",
"base"
],
"iconUrl": "https://polym.uk/favicon.svg",
"mimeType": "application/json",
"description": "Live Polymarket watchlist ranked by structural UMA resolution base-rate signals, with flip risk kept as a separate conditional axis. BEFORE YOU PAY: free substitute https://dash.polym.uk/markets.json and https://dash.polym.uk/uma-base-rates.json. THIS ADDS: The live subset ranked by structural dispute signals, computed for you. The inputs are in the free files; the ranking and the tiering are what this adds.",
"serviceName": "Polymarket Intelligence API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"top": 25
}
},
"output": {
"type": "json",
"example": {
"asOf": "2026-09-01T02:31:34.907Z",
"caveats": [
"SHOWCASE, NOT THE PAID RESPONSE: what you see is one ranked row of the watchlist. markets is cut to 1 of the 8 rows this response carried. Nothing is masked or invented: every value is a dated measurement, kept so you can read the shape, the units and the field semantics. The schema published beside it is complete; a paid call returns the complete set.",
"EXAMPLE ONLY: a paid response captured from api.polym.uk on 2026-09-01 with top=8, then frozen. A live response carries its own asOf and current values. The row count is bounded by the 402 challenge header budget, not by the route: top accepts 1 through 40.",
"Structural BASE RATE for the category and criterion. Not a prediction that THIS market will be disputed or reversed. A fact, not an accusation.",
"tier uses the RANK-stable signal (category elevated by consensus across two samples, plus a title with no checkable threshold, read from the TITLE and not from the resolution rules), not the absolute dispute rate, which varies about 16-fold between samples.",
"LIVE markets only, and liveness must have been MEASURED (marketClosed === false). A market whose Gamma context was not fetched is absent rather than assumed open. Drawn from the set decomposed by window volume; this is not the whole Polymarket universe.",
"flipProne is omitted when the category flip sample is small and therefore directional. Category is a title heuristic."
],
"markets": [
{
"tier": "elevated",
"flags": {
"flipProne": false,
"categoryElevated": true,
"titleLooksUncheckable": true
},
"title": "US ceasefire against Iran continues through September 15?",
"category": "Geopolitics",
"conditionId": "0x9b94d7e2e7250d156b02435f4d59634d357dc789d842eaee15c35c1158d5bca4",
"flipRatePct": null,
"marketClosed": false,
"categoryElevated": true,
"disputeFlagCount": 2,
"apparentVolumeUsd": 46599.79,
"titleLooksUncheckable": true,
"categoryDisputeRatePctHighVolume": 35.2
}
],
"howToRead": "Ranks LIVE markets by STRUCTURAL resolution risk. tier counts how many DISPUTE-axis signals are present (category elevated by consensus, plus a title with no checkable threshold): elevated=2, watch=1, baseline=0. flipProne is a separate axis: if disputed, the outcome tends to REVERSE (category rate at or above the overall rate). Both axes are conditional, and flip alone never raises the tier.",
"tierCounts": {
"watch": 2,
"elevated": 6
},
"windowHours": 71.94,
"flipReferencePct": 14.6,
"liveMarketsRanked": 8,
"flipReferenceStatus": "measured",
"flipReferenceWithheldReason": null
}
}
},
"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",
"properties": {
"top": {
"type": "integer",
"default": 25,
"maximum": 40,
"minimum": 1
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"asOf",
"windowHours",
"liveMarketsRanked",
"tierCounts",
"flipReferencePct",
"markets",
"howToRead",
"caveats"
],
"properties": {
"asOf": {
"type": "string",
"format": "date-time"
},
"caveats": {
"type": "array",
"items": {
"type": "string"
}
},
"markets": {
"type": "array",
"items": {
"type": "object",
"required": [
"conditionId",
"title",
"tier",
"disputeFlagCount",
"flags",
"category",
"titleLooksUncheckable",
"categoryElevated",
"categoryDisputeRatePctHighVolume",
"flipRatePct",
"apparentVolumeUsd",
"marketClosed"
],
"properties": {
"tier": {
"enum": [
"elevated",
"watch",
"baseline"
],
"type": "string"
},
"flags": {
"type": "object",
"required": [
"categoryElevated",
"titleLooksUncheckable",
"flipProne"
],
"properties": {
"flipProne": {
"type": "boolean",
"description": "Separate conditional axis: if disputed, this category reverses at or above the overall rate. Never raises the tier."
},
"categoryElevated": {
"type": "boolean",
"description": "Category flagged elevated by consensus across both dispute samples. Dispute axis; counts toward tier."
},
"titleLooksUncheckable": {
"type": "boolean",
"description": "The title states no checkable threshold. Dispute axis; counts toward tier. Read from the title only."
}
},
"additionalProperties": false
},
"title": {
"type": "string"
},
"category": {
"type": "string"
},
"conditionId": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{64}$",
"description": "Polymarket condition ID."
},
"flipRatePct": {
"type": [
"number",
"null"
],
"maximum": 100,
"minimum": 0
},
"marketClosed": {
"type": [
"boolean",
"null"
]
},
"categoryElevated": {
"type": "boolean"
},
"disputeFlagCount": {
"type": "integer",
"minimum": 0
},
"apparentVolumeUsd": {
"type": "number",
"minimum": 0
},
"titleLooksUncheckable": {
"type": "boolean"
},
"categoryDisputeRatePctHighVolume": {
"type": "number",
"maximum": 100,
"minimum": 0
}
},
"additionalProperties": false
}
},
"howToRead": {
"type": "string"
},
"tierCounts": {
"type": "object",
"additionalProperties": {
"type": "integer",
"minimum": 0
}
},
"windowHours": {
"type": "number",
"minimum": 0
},
"flipReferencePct": {
"type": [
"number",
"null"
],
"maximum": 100,
"minimum": 0,
"description": "Overall flip reference rate, in percent. `null` means WITHHELD, never a default: see flipReferenceStatus and flipReferenceWithheldReason. When it is null, flipProne was not evaluated on any row."
},
"liveMarketsRanked": {
"type": "integer",
"minimum": 0
},
"flipReferenceStatus": {
"enum": [
"measured",
"withheld"
],
"type": "string"
},
"flipReferenceWithheldReason": {
"type": [
"string",
"null"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.05USDC≈ $0.05 USD
on Base · exact scheme
Pay 0.05 USDC on Base to 0x7b13…6f3E3. The signed payment is good for 5 minutes.
- Paid to
- 0x7b13…6f3E3
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 50000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"iconUrl": "https://polym.uk/favicon.svg",
"version": "2"
},
"payTo": "0x7b13107779CfDA1bEba3289d0Fbe27310436f3E3",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"top": 25
}
},
"output": {
"type": "json",
"example": {
"asOf": "2026-09-01T02:31:34.907Z",
"caveats": [
"SHOWCASE, NOT THE PAID RESPONSE: what you see is one ranked row of the watchlist. markets is cut to 1 of the 8 rows this response carried. Nothing is masked or invented: every value is a dated measurement, kept so you can read the shape, the units and the field semantics. The schema published beside it is complete; a paid call returns the complete set.",
"EXAMPLE ONLY: a paid response captured from api.polym.uk on 2026-09-01 with top=8, then frozen. A live response carries its own asOf and current values. The row count is bounded by the 402 challenge header budget, not by the route: top accepts 1 through 40.",
"Structural BASE RATE for the category and criterion. Not a prediction that THIS market will be disputed or reversed. A fact, not an accusation.",
"tier uses the RANK-stable signal (category elevated by consensus across two samples, plus a title with no checkable threshold, read from the TITLE and not from the resolution rules), not the absolute dispute rate, which varies about 16-fold between samples.",
"LIVE markets only, and liveness must have been MEASURED (marketClosed === false). A market whose Gamma context was not fetched is absent rather than assumed open. Drawn from the set decomposed by window volume; this is not the whole Polymarket universe.",
"flipProne is omitted when the category flip sample is small and therefore directional. Category is a title heuristic."
],
"markets": [
{
"tier": "elevated",
"flags": {
"flipProne": false,
"categoryElevated": true,
"titleLooksUncheckable": true
},
"title": "US ceasefire against Iran continues through September 15?",
"category": "Geopolitics",
"conditionId": "0x9b94d7e2e7250d156b02435f4d59634d357dc789d842eaee15c35c1158d5bca4",
"flipRatePct": null,
"marketClosed": false,
"categoryElevated": true,
"disputeFlagCount": 2,
"apparentVolumeUsd": 46599.79,
"titleLooksUncheckable": true,
"categoryDisputeRatePctHighVolume": 35.2
}
],
"howToRead": "Ranks LIVE markets by STRUCTURAL resolution risk. tier counts how many DISPUTE-axis signals are present (category elevated by consensus, plus a title with no checkable threshold): elevated=2, watch=1, baseline=0. flipProne is a separate axis: if disputed, the outcome tends to REVERSE (category rate at or above the overall rate). Both axes are conditional, and flip alone never raises the tier.",
"tierCounts": {
"watch": 2,
"elevated": 6
},
"windowHours": 71.94,
"flipReferencePct": 14.6,
"liveMarketsRanked": 8,
"flipReferenceStatus": "measured",
"flipReferenceWithheldReason": null
}
}
},
"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",
"properties": {
"top": {
"type": "integer",
"default": 25,
"maximum": 40,
"minimum": 1
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"asOf",
"windowHours",
"liveMarketsRanked",
"tierCounts",
"flipReferencePct",
"markets",
"howToRead",
"caveats"
],
"properties": {
"asOf": {
"type": "string",
"format": "date-time"
},
"caveats": {
"type": "array",
"items": {
"type": "string"
}
},
"markets": {
"type": "array",
"items": {
"type": "object",
"required": [
"conditionId",
"title",
"tier",
"disputeFlagCount",
"flags",
"category",
"titleLooksUncheckable",
"categoryElevated",
"categoryDisputeRatePctHighVolume",
"flipRatePct",
"apparentVolumeUsd",
"marketClosed"
],
"properties": {
"tier": {
"enum": [
"elevated",
"watch",
"baseline"
],
"type": "string"
},
"flags": {
"type": "object",
"required": [
"categoryElevated",
"titleLooksUncheckable",
"flipProne"
],
"properties": {
"flipProne": {
"type": "boolean",
"description": "Separate conditional axis: if disputed, this category reverses at or above the overall rate. Never raises the tier."
},
"categoryElevated": {
"type": "boolean",
"description": "Category flagged elevated by consensus across both dispute samples. Dispute axis; counts toward tier."
},
"titleLooksUncheckable": {
"type": "boolean",
"description": "The title states no checkable threshold. Dispute axis; counts toward tier. Read from the title only."
}
},
"additionalProperties": false
},
"title": {
"type": "string"
},
"category": {
"type": "string"
},
"conditionId": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{64}$",
"description": "Polymarket condition ID."
},
"flipRatePct": {
"type": [
"number",
"null"
],
"maximum": 100,
"minimum": 0
},
"marketClosed": {
"type": [
"boolean",
"null"
]
},
"categoryElevated": {
"type": "boolean"
},
"disputeFlagCount": {
"type": "integer",
"minimum": 0
},
"apparentVolumeUsd": {
"type": "number",
"minimum": 0
},
"titleLooksUncheckable": {
"type": "boolean"
},
"categoryDisputeRatePctHighVolume": {
"type": "number",
"maximum": 100,
"minimum": 0
}
},
"additionalProperties": false
}
},
"howToRead": {
"type": "string"
},
"tierCounts": {
"type": "object",
"additionalProperties": {
"type": "integer",
"minimum": 0
}
},
"windowHours": {
"type": "number",
"minimum": 0
},
"flipReferencePct": {
"type": [
"number",
"null"
],
"maximum": 100,
"minimum": 0,
"description": "Overall flip reference rate, in percent. `null` means WITHHELD, never a default: see flipReferenceStatus and flipReferenceWithheldReason. When it is null, flipProne was not evaluated on any row."
},
"liveMarketsRanked": {
"type": "integer",
"minimum": 0
},
"flipReferenceStatus": {
"enum": [
"measured",
"withheld"
],
"type": "string"
},
"flipReferenceWithheldReason": {
"type": [
"string",
"null"
]
}
},
"additionalProperties": false
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-07 10:17Z
- Last indexed by Roundhouse
- 2026-09-24 10:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 05:46Z
- 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. 30 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 Intelligence API 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%20Intelligence%20API' 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://api.polym.uk/resolution-watchlist, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.