Contract
input_schema.json
{
"type": "object",
"required": [
"event_slug"
],
"properties": {
"limit": {
"type": "integer",
"default": 20,
"maximum": 100,
"minimum": 1,
"description": "Results per page. Example: 20. Defaults to 20."
},
"offset": {
"type": "integer",
"default": 0,
"maximum": 9007199254740991,
"minimum": 0,
"description": "Pagination offset. Example: 0. Defaults to 0."
},
"event_slug": {
"type": "string",
"minLength": 1,
"description": "Polymarket event slug (identifies a multi-outcome question with several nested markets). Known World Cup match sibling slugs are expanded to the canonical match group. Discover slugs via /v1/search/prediction-market?platform=polymarket&q={keyword}. For a single Yes/No market, use /polymarket/markets with market_slug instead — this endpoint only accepts event_slug, not market_slug. Example: what-price-will-bitcoin-hit-before-2027."
}
},
"additionalProperties": false
}output_schema.json
{
"type": "object",
"required": [
"data",
"meta"
],
"properties": {
"data": {
"type": "array",
"items": {
"type": "object",
"properties": {
"tags": {
"type": "array",
"items": {
"type": "string"
}
},
"title": {
"type": "string"
},
"status": {
"type": "string",
"description": "e.g. 'open'."
},
"markets": {
"type": "array",
"items": {
"type": "object",
"properties": {
"tags": {
"type": "array",
"items": {
"type": "string"
}
},
"title": {
"type": "string"
},
"side_a": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The outcome's on-chain token id, not a phone number."
},
"label": {
"type": "string"
}
},
"description": "The market's first outcome (observed as 'Yes' on every fixture market).",
"additionalProperties": false
},
"side_b": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The outcome's on-chain token id, not a phone number."
},
"label": {
"type": "string"
}
},
"description": "The market's second outcome (observed as 'No' on every fixture market).",
"additionalProperties": false
},
"status": {
"type": "string",
"description": "e.g. 'open', 'closed'."
},
"category": {
"type": "string"
},
"end_time": {
"type": "number",
"description": "Unix seconds."
},
"close_time": {
"type": "number",
"description": "Unix seconds; 0 when the market has not closed yet."
},
"event_slug": {
"type": "string"
},
"start_time": {
"type": "number",
"description": "Unix seconds."
},
"description": {
"type": "string",
"description": "The resolution criteria in prose -- what makes this market resolve Yes vs No."
},
"market_slug": {
"type": "string",
"description": "The market's own slug, distinct from the parent event_slug."
},
"subcategory": {
"type": "string"
},
"condition_id": {
"type": "string",
"description": "The on-chain condition id identifying this market's resolution contract."
},
"volume_total": {
"type": "number",
"description": "Total traded volume in USD."
},
"winning_side": {
"type": "string",
"description": "Only present once a market has resolved -- absent (not null) on every still-open market observed in the fixture; do not assume this key exists."
},
"volume_1_week": {
"type": "number",
"description": "Traded volume in USD, trailing 1 week."
},
"volume_1_year": {
"type": "number",
"description": "Traded volume in USD, trailing 1 year."
},
"completed_time": {
"type": "number",
"description": "Unix seconds; 0 when the market has not resolved yet."
},
"volume_1_month": {
"type": "number",
"description": "Traded volume in USD, trailing 1 month."
},
"game_start_time": {
"type": "number",
"description": "0 on every non-sports market observed; likely populated for sports events."
}
},
"additionalProperties": false
},
"description": "The event's nested Yes/No markets."
},
"category": {
"type": "string"
},
"end_time": {
"type": "number",
"description": "Unix seconds."
},
"event_slug": {
"type": "string"
},
"start_time": {
"type": "number",
"description": "Unix seconds."
},
"description": {
"type": "string"
},
"subcategory": {
"type": "string"
},
"market_count": {
"type": "number"
},
"volume_total": {
"type": "number",
"description": "Total traded volume across the event's markets, in USD."
}
},
"additionalProperties": false
},
"description": "Empty when the slug matches no event (see event-not-found.json) -- not an error case, the call still completes and bills normally."
},
"meta": {
"type": "object",
"properties": {
"limit": {
"type": "number"
},
"total": {
"type": "number"
},
"cached": {
"type": "boolean"
},
"offset": {
"type": "number"
}
},
"additionalProperties": false
}
},
"description": "The event list for the requested slug.",
"additionalProperties": false
}Pricing
Every real charge, itemised. A model that quietly omits one is a slow financial leak, so nothing here is rolled up, and a charge that only applies to some inputs says so rather than being added in.
Prices in this catalog are the provider's own list price, not your bill: Omnial MCP charges provider cost plus a platform markup on top, so what you are charged is higher than the figure shown. For the exact amount a specific call will cost, run omnial_execute with dry_run: true; that number includes the markup and is what we hold while the call runs. It is a quote, not a cap on the charge.
| Charge | Rate |
|---|---|
Per call Flat, regardless of what comes back | $0.03276 |
- Cost basis
- Not recorded
This tool's catalog entry does not record how its final bill is determined, so we will not tell you whether its cost is fixed before the call or reported by the provider afterwards. Either way what is held is a quote rather than a cap: you are charged what the call actually costs, bounded at 2x the quote.
- Updated
- Sep 23, 2026