MCP / Finance

Polymarket US MCP: financial workflows

Polymarket US only. This toolkit connects to the CFTC-compliant Polymarket US product for United States users, not the global Polymarket app. API... Connect it to Claude, Codex, Cursor or any MCP client through one FlyMy.AI MCP.

Your own API key44 actionsFinance

$ YOUR NEXT RUN

Claude CodeCodexCursorAny agent

Use Polymarket US MCP in your assistant

Paste this prompt into Claude Code, Codex, Cursor or any agent. It reads the guide and helps you connect.

Read https://flymy.ai/skill.md and https://flymy.ai/mcp/polymarket-us.md. Help me connect Polymarket US MCP to this assistant. Then help me run this task: Use Polymarket US to cancel all open orders. Ask me for the required inputs first and show the result.
Open FlyMy.AIDownload brief

What Polymarket US MCP can do

44 actions in the FlyMy.AI catalog, the most used first. Your agent finds them through search_tools and calls the one the task needs.

ActionWhat it does
# POLYMARKET_US_CANCEL_ALL_OPEN_ORDERSCancel all authenticated Polymarket US open orders, optionally scoped to specific market slugs.
# POLYMARKET_US_CANCEL_MULTIPLE_ORDERSCancel up to 20 Polymarket US open orders in one request.
# POLYMARKET_US_CANCEL_ORDERCancel one Polymarket US open order by exchange-assigned order ID.
# POLYMARKET_US_CLOSE_POSITION_ORDERCreate a live Polymarket US order intended to close an existing position in one market.
# POLYMARKET_US_CREATE_MULTIPLE_ORDERSSubmit up to 20 live Polymarket US orders in one request.
# POLYMARKET_US_CREATE_ORDERSubmit one live Polymarket US order.
# POLYMARKET_US_GET_ACCOUNT_BALANCESGet the authenticated user's Polymarket US account balances.
# POLYMARKET_US_GET_ACTIVITIESGet authenticated Polymarket US portfolio activities such as trades, resolutions, deposits, withdrawals, referral bonuses, and transfers.
# POLYMARKET_US_GET_EVENT_BY_IDGet one Polymarket US event by numeric ID from the public gateway API.
# POLYMARKET_US_GET_EVENT_BY_SLUGGet one Polymarket US event by slug from the public gateway API.
# POLYMARKET_US_GET_LEAGUE_BY_SLUGGet a current Polymarket US v2 league by slug.
# POLYMARKET_US_GET_MARKETS_FOR_SUBJECTDiscover Polymarket US markets associated with a subject ID.
Show all 44 actions
ActionWhat it does
# POLYMARKET_US_GET_MARKETS_FOR_SUBJECT_BY_SLUGDiscover Polymarket US markets associated with a subject slug.
# POLYMARKET_US_GET_MARKET_BBOGet the best bid and offer for one Polymarket US market by slug.
# POLYMARKET_US_GET_MARKET_BOOKGet the public order book for one Polymarket US market by slug.
# POLYMARKET_US_GET_MARKET_BY_IDGet one Polymarket US market by numeric ID from the public gateway API.
# POLYMARKET_US_GET_MARKET_BY_SLUGGet one Polymarket US market by slug from the public gateway API.
# POLYMARKET_US_GET_MARKET_SETTLEMENTGet settlement information for one Polymarket US market by slug.
# POLYMARKET_US_GET_OPEN_ORDERSGet all open orders for the authenticated Polymarket US user.
# POLYMARKET_US_GET_ORDERGet an authenticated user's Polymarket US order by exchange-assigned order ID.
# POLYMARKET_US_GET_SERIES_BY_IDGet a Polymarket US series by numeric ID.
# POLYMARKET_US_GET_SPORT_BY_SLUGGet a current Polymarket US v2 sport by slug.
# POLYMARKET_US_GET_SUBJECT_BY_IDGet a Polymarket US subject entity by numeric ID.
# POLYMARKET_US_GET_SUBJECT_BY_SLUGGet a Polymarket US subject entity by slug.
# POLYMARKET_US_GET_TAG_BY_IDGet a Polymarket US topic, sport, or league tag by numeric ID.
# POLYMARKET_US_GET_TAG_BY_SLUGGet a Polymarket US topic, sport, or league tag by slug.
# POLYMARKET_US_GET_USER_POSITIONSGet the authenticated user's Polymarket US trading positions across all markets or filtered by a specific market slug.
# POLYMARKET_US_LIST_EVENTSDiscover Polymarket US events from the public gateway API.
# POLYMARKET_US_LIST_EVENTS_FOR_LEAGUEList Polymarket US events for a current v2 league slug such as "nba" or "nfl".
# POLYMARKET_US_LIST_EVENTS_FOR_SERIESList Polymarket US sports events for a legacy v1 series ID.
# POLYMARKET_US_LIST_EVENTS_FOR_SPORTList Polymarket US events for a current v2 sport slug such as "football" or "basketball".
# POLYMARKET_US_LIST_LEAGUESList current Polymarket US sports leagues from the v2 public gateway API.
# POLYMARKET_US_LIST_MARKETSDiscover Polymarket US markets from the public gateway API.
# POLYMARKET_US_LIST_SERIESList Polymarket US series from the public gateway API.
# POLYMARKET_US_LIST_SPORTSList Polymarket US sports from the current v2 public gateway API.
# POLYMARKET_US_LIST_SPORTS_TEAMSList Polymarket US sports teams from the legacy v1 public gateway API.
# POLYMARKET_US_LIST_SPORTS_TEAMS_FOR_PROVIDERList Polymarket US legacy v1 sports team mappings for a data provider.
# POLYMARKET_US_LIST_SUBJECTSList Polymarket US subject entities from the public gateway API.
# POLYMARKET_US_LIST_TAGSList ranked Polymarket US tags from the public gateway API.
# POLYMARKET_US_MODIFY_MULTIPLE_ORDERSModify up to 20 Polymarket US open orders in one request.
# POLYMARKET_US_MODIFY_ORDERModify one existing Polymarket US open order.
# POLYMARKET_US_PREVIEW_ORDERPreview a Polymarket US order without submitting it to the market.
# POLYMARKET_US_SEARCH_MARKETS_AND_EVENTSSearch public Polymarket US markets and events for discovery.

Ask your agent

Requests to paste as they are. Each one runs on the actions named under it.

“Use Polymarket US to cancel all open orders. Ask me for the required inputs first and show the result.”uses POLYMARKET_US_CANCEL_ALL_OPEN_ORDERS
“Use Polymarket US to cancel multiple orders. Ask me for the required inputs first and show the result.”uses POLYMARKET_US_CANCEL_MULTIPLE_ORDERS
“Use Polymarket US to cancel order. Ask me for the required inputs first and show the result.”uses POLYMARKET_US_CANCEL_ORDER

Connect Polymarket US in a minute

One MCP for every integration. Add it once, then every MCP in the catalog is a request away.

  1. 01

    Add FlyMy.AI

    Add the FlyMy.AI MCP to your assistant with one of the commands below and sign in. No key to copy.

  2. 02

    Add your Polymarket US credentials

    Paste them into the Polymarket US connection settings once; they stay with FlyMy.AI, never in a prompt or a chat.

    • Secret Key - Ed25519 secret key for Polymarket US only. Get it from https://polymarket.us/developers after signing in to a verified Polymarket US account. It is shown... Get API key →
    • Key ID - Public key ID for the same Polymarket US API key as the Secret Key. Get it from https://polymarket.us/developers; it is shown next to the Secret Key when... Get API key →
  3. 03

    Ask

    Paste a request from this page. Every run shows what it cost.

Claude Code
claude mcp add --transport http flymyai https://mcp-agents.flymy.ai/mcp

Then run /mcp in Claude Code and sign in.

Codex
codex mcp add flymy --url https://mcp-agents.flymy.ai/mcp

Then run codex mcp login flymy to sign in.

claude.ai and Claude Desktop
https://mcp-agents.flymy.ai/mcp

Settings, Connectors, Add custom connector: paste this URL.

Pay per run

FlyMy.AI bills the run: the model and the tool's seconds. Calls go to your own Polymarket US account, under its plan and limits. No seats and no minimum.

Go to the source

From the FlyMy.AI platform catalog of 2026-11-03: name, description, actions and setup as the platform lists them. Examples are requests to paste, not recorded runs.