What is Polymarket US MCP?

It's an MCP (Model Context Protocol) server that connects Polymarket US to your AI, giving the agent tools to act on your data — through a single remote link.

Which AI clients does it work with?

Any MCP-compatible client: Claude (web, desktop and mobile), Cursor, ChatGPT with connectors, OpenClaw and other agents.

No. Paste the remote URL into your client, authenticate once, and you're done — no packages to install, no code to write.

Is it secure? Can the AI change my data?

Access is authorized by you and can be revoked anytime. Permissions follow what Polymarket US exposes; you approve them when connecting.

How much does it cost?

You start free and upgrade when you need more usage. Billing and limits are managed in your mcp.ai account.

Can I cancel anytime?

Yes. Plans are monthly and can be cancelled at any time, with no lock-in.

Polymarket US MCP Server and REST API

Polymarket US

Connect your Polymarket US account and use 44 tools for commerce straight from your AI agent. Connect with your own API key. Polymarket US only. This toolkit connects to the CFTC-compliant Polymarket US product for United States users, not the global Polymarket app. API credentials are created at https://polymarket.us/developers after Polymarket US account verification.

Install in your client

MCP server URL

https://api.mcp.ai/p_polymarket

Secure connection via OAuth 2.0

Tools (44)

For developers

API & agent docs

Machine-readable docs to plug this server into an agent or call it over REST.

Skill (how to use)

Markdown: use via MCP or via the direct REST API.

Open

llms.txt

Agent-readable spec of this server.

Open

For agents

Install prompt — paste into Claude, ChatGPT, Cursor or any MCP agent and it sets itself up.

Open

Postman collection

Import the REST API into Postman.

Download

FAQ

Polymarket US

Tools (44)

API & agent docs

Frequently asked questions

Example prompts

Related tags

Polymarket US

Tools (44)

polymarket_cancel_all_open_ordersCancel all authenticated Polymarket US open orders, optionally scoped to specific market slugs. This is broad and destructive for remaining open quantities; omit slugs only when the user clearly asks

polymarket_cancel_multiple_ordersCancel up to 20 Polymarket US open orders in one request. Use only when the user explicitly asks to cancel the batch. Cancellation removes remaining open quantity but does not undo fills or positions,

polymarket_cancel_orderCancel one Polymarket US open order by exchange-assigned order ID. This is a destructive mutation of the remaining open quantity and should only be used when the user explicitly asks to cancel. Alread

polymarket_close_position_orderCreate a live Polymarket US order intended to close an existing position in one market. Use only when the user explicitly asks to close that position. This can trade immediately, leave residual exposu

polymarket_create_multiple_ordersSubmit up to 20 live Polymarket US orders in one request. Use only after the user explicitly asks to place the batch and, when practical, after previewing the same orders. This mutating action can con

polymarket_create_orderSubmit one live Polymarket US order. Use Preview Order first unless the user has already reviewed the exact order details. This mutating action can reserve buying power, fill immediately, or create re

polymarket_get_account_balancesGet the authenticated user's Polymarket US account balances. Use this read-only action to inspect buying power, balances, pending credits, and funds reserved by open orders before previewing or placin

polymarket_get_activitiesGet authenticated Polymarket US portfolio activities such as trades, resolutions, deposits, withdrawals, referral bonuses, and transfers. Requires Polymarket US signed authentication and returns activ

polymarket_get_event_by_idGet one Polymarket US event by numeric ID from the public gateway API. Use this after discovery when the caller already has the integer event ID and needs full event details or associated market refer

polymarket_get_event_by_slugGet one Polymarket US event by slug from the public gateway API. Use this after search/list discovery or when parsing a Polymarket event URL. Do not pass numeric IDs here; use Get Event By ID for inte

polymarket_get_league_by_slugGet a current Polymarket US v2 league by slug. Use List Leagues or Get Sport By Slug first if the slug is unknown. This is useful for confirming league metadata before listing events for a league such

polymarket_get_market_bboGet the best bid and offer for one Polymarket US market by slug. Use this lightweight top-of-book read before quoting, previewing, or explaining an order. If the agent needs depth or slippage context,

polymarket_get_market_bookGet the public order book for one Polymarket US market by slug. Use this before quoting, previewing, or explaining an order when the agent needs depth beyond the top of book. The response is market da

polymarket_get_market_by_idGet one Polymarket US market by numeric ID from the public gateway API. Use this after market discovery when the caller already has the integer market ID and needs full market metadata. Do not pass sl

polymarket_get_market_by_slugGet one Polymarket US market by slug from the public gateway API. Use this after search/list discovery or when parsing a Polymarket market URL. Do not pass numeric IDs here; use Get Market By ID for i

polymarket_get_market_settlementGet settlement information for one Polymarket US market by slug. Use this only for resolved, closed, or historical market workflows where the caller needs public resolution or settlement details. It i

polymarket_get_markets_for_subjectDiscover Polymarket US markets associated with a subject ID. Use this action after List Subjects or Get Subject By ID identifies the team, person, candidate, player, nominee, or other entity the user

polymarket_get_markets_for_subject_by_slugDiscover Polymarket US markets associated with a subject slug. Use this action after List Subjects, Get Subject By Slug, or a Polymarket URL identifies the team, person, candidate, player, nominee, or

polymarket_get_open_ordersGet all open orders for the authenticated Polymarket US user. Use this read-only action before modifying or canceling orders, or to inspect live order exposure. Requires signed authentication, support

polymarket_get_orderGet an authenticated user's Polymarket US order by exchange-assigned order ID. Requires signed authentication and returns order details available to that account. Use this read-only action to inspect

polymarket_get_series_by_idGet a Polymarket US series by numeric ID. Series are recurring or grouped event collections. Use this action when an agent has a series ID and needs the slug, active status, recurrence, or other publi

polymarket_get_sport_by_slugGet a current Polymarket US v2 sport by slug. Use List Sports first if the slug is unknown. The response includes the sport metadata and leagues attached to that sport, which helps agents move from br

polymarket_get_subject_by_idGet a Polymarket US subject entity by numeric ID. Subjects represent teams, people, candidates, players, nominees, and other named entities attached to markets. Use this action when an agent already h

polymarket_get_subject_by_slugGet a Polymarket US subject entity by slug. Subjects represent teams, people, candidates, players, nominees, and other named entities attached to markets. Use this action when an agent has a subject s

polymarket_get_tag_by_idGet a Polymarket US topic, sport, or league tag by numeric ID. Use this action after List Tags or a market/event response returns a tag ID and the agent needs the tag label, slug, hierarchy, or sport/

polymarket_get_tag_by_slugGet a Polymarket US topic, sport, or league tag by slug. Use this action when an agent has a URL-safe tag slug, such as nba or sports, and needs the tag ID, label, hierarchy, or sport/league metadata

polymarket_get_user_positionsGet the authenticated user's Polymarket US trading positions across all markets or filtered by a specific market slug. Requires Polymarket US signed authentication and only returns positions for that

polymarket_list_eventsDiscover Polymarket US events from the public gateway API. Use this action before event-specific lookups when starting from a topic, category, tag, or broad filter set. Practical guidance for agents:

polymarket_list_events_for_leagueList Polymarket US events for a current v2 league slug such as "nba" or "nfl". Use List Leagues or Get Sport By Slug first if the slug is unknown. Supports limit/offset pagination, excludeEventId for

polymarket_list_events_for_seriesList Polymarket US sports events for a legacy v1 series ID. Prefer List Events For Sport or List Events For League for current v2 browsing. Use this action when an agent already has a series ID from a

polymarket_list_events_for_sportList Polymarket US events for a current v2 sport slug such as "football" or "basketball". Use List Sports first if the slug is unknown. Supports limit/offset pagination, excludeEventId for de-duplicat

polymarket_list_featured_tagsList featured Polymarket US tag sections from the public gateway API. Featured tags are curated browse sections, often with subtags, intended for discovery UI and recommendation flows rather than exha

polymarket_list_leaguesList current Polymarket US sports leagues from the v2 public gateway API. This is the preferred action for discovering league slugs such as "nfl" or "nba" before calling Get League By Slug or List Eve

polymarket_list_marketsDiscover Polymarket US markets from the public gateway API. Use this action when an agent needs candidate market slugs or IDs before reading market details, order books, best bid/offer, or preparing o

polymarket_list_seriesList Polymarket US series from the public gateway API. Series are recurring or grouped event collections, such as seasonal or repeated sports event groupings. Use this action to discover a series ID o

polymarket_list_sportsList Polymarket US sports from the current v2 public gateway API. Use this for sports browsing and for discovering sport slugs such as "football" or "basketball" before calling Get Sport By Slug or Li

polymarket_list_sports_teamsList Polymarket US sports teams from the legacy v1 public gateway API. Use this action when an agent needs team metadata for sports events or needs to filter teams by league, name, abbreviation, or Po

polymarket_list_sports_teams_for_providerList Polymarket US legacy v1 sports team mappings for a data provider. Use this action when an agent needs provider-specific team IDs for SportsDataIO or Sportradar integrations. Pass provider as the

polymarket_list_subjectsList Polymarket US subject entities from the public gateway API. Subjects are teams, people, candidates, players, nominees, or other named entities that markets can be about. Use this action to discov

polymarket_list_tagsList ranked Polymarket US tags from the public gateway API. Tags are topic, sport, league, and browse filters that agents can use to narrow event or market discovery before calling event and market li

polymarket_modify_multiple_ordersModify up to 20 Polymarket US open orders in one request. Use only when the user explicitly asks to change the batch. These live cancel-replace style mutations can change funding requirements, exposur

polymarket_modify_orderModify one existing Polymarket US open order. This is a live cancel-replace style mutation and should only be used when the user explicitly asks to change an order. It can alter exposure, required fun

polymarket_preview_orderPreview a Polymarket US order without submitting it to the market. Use this signed, read-only action before live order creation to validate parameters and inspect the calculated order response. It req

polymarket_search_markets_and_eventsSearch public Polymarket US markets and events for discovery. Use this for natural-language discovery when an agent needs candidate market or event slugs/IDs before calling specific market/event endpo

API & agent docs

Frequently asked questions

What is Polymarket US MCP?

Which AI clients does it work with?

Do I need to code?

Is it secure? Can the AI change my data?

How much does it cost?

Can I cancel anytime?

Example prompts

Related tags