Server data from the Official MCP Registry
Who is buying the prediction-market line: Polymarket wallet records, board, edges, entries.
About
Who is buying the prediction-market line: Polymarket wallet records, board, edges, entries.
Remote endpoints: streamable-http: https://api.groundtruths.xyz/mcp
Security Report
Valid MCP server (2 strong, 3 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.
Endpoint verified · Open access · 1 issue found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Found in Source Code
Found by scanning the linked source code. This listing connects to a hosted endpoint, so none of this runs on your machine: it describes what the server software does where it is hosted.
How to Connect
Remote Plugin
No local installation needed. Your AI client connects to the remote endpoint directly.
Add this to your MCP configuration to connect:
{
"mcpServers": {
"xyz-groundtruths-groundtruth": {
"url": "https://api.groundtruths.xyz/mcp"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
GROUNDTRUTH MCP + x402
Who is buying the prediction-market line. Polymarket wallet records, the market board (who is in, per market), GT line vs Smart-money line gaps, and the smart-money entry feed. Counts from the Polygon chain, each with its sample size. Paid per call over x402 (USDC on Base or Solana), or free to connect over MCP.
The memecoin tools are paused; everything below is prediction-market data.
Price table
| route | what | price (USDC) | free |
|---|---|---|---|
/x402/v1/pm/wallet?addr=0x.. | one wallet's record: won X of Y, P&L, tag | $0.01 | none |
/x402/v1/pm/board | who is in, per market | $0.05 | top 3 per board |
/x402/v1/pm/edges | GT line vs Smart-money line gaps | $0.03 | top 3 |
/x402/v1/pm/entries | smart-money entries | $0.05 | newest 3 |
/x402/... is the always-402 door a bazaar validator probes. /v1/pm/... answers the free rows without a
payment and a 402 for the rest. Same prices, one constant in the worker.
1. Unpaid: the 402 challenge
curl -i 'https://api.groundtruths.xyz/x402/v1/pm/board'
2. Paid: the board
Sign the requirement and send the payload back in PAYMENT-SIGNATURE (any x402 client does this; @x402/fetch works):
curl -s -H 'PAYMENT-SIGNATURE: <base64 payload>' 'https://api.groundtruths.xyz/x402/v1/pm/board'
Each market comes back with its sides, price, $ and wallets, the tagged wallets holding each side (SMART MONEY / WHALE / BOT/MM), the GT line and the Smart-money line. No sportsbook odds and no Kalshi price ever ride these routes.
3. Paying
- Base (
eip155:8453): USDC, EIP-3009transferWithAuthorization. A signed message: the payer needs no ETH. - Solana (
solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp): USDC SPL transfer with the facilitator as fee payer, so the payer needs no SOL. Exactly three instructions in order:SetComputeUnitLimit,SetComputeUnitPrice, transfer.
4. MCP client config
{
"mcpServers": {
"groundtruth": {
"type": "streamable-http",
"url": "https://api.groundtruths.xyz/mcp"
}
}
}
Tools: pm_market_board, pm_edges, pm_smart_money_entries, pm_wallet_record, line_check_board, market_heat.
Optional header x-api-key: gt_live_... (free key: https://groundtruths.xyz/account). Without a key: the free rows.
5. Bankr
install the skill at https://github.com/groundtruth-now/groundtruth-mcp/tree/main/skills/groundtruth
Facilitators
Per chain, because bazaars index per facilitator: Base -> CDP, Solana -> PayAI.
How we keep score
https://groundtruths.xyz/boring#linecheck. A record belongs to a wallet, not a person. Information only, not financial advice.
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