mcpbeat

Spoiler MCP Server

io.github.zerozaky/spoiler
not responding

Spoiler is listed as active in the registry but did not answer our last check. It exposes 12 tools.

Sealed prediction-market verdicts, graded in public across Polymarket and Kalshi. No auth required.

Uptime history 42 hours of history · worst hour 0%
42 hours agonow
0.0%
Uptime 24h
0 of 91 checks
12
Tools
read from the server
79 ms
Response time
average over 24h
open, no key
Access
streamable-http

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

run in your terminal
claude mcp add spoiler --transport http https://spoiler.bet/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "spoiler": {
      "url": "https://spoiler.bet/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.spoiler]
url = "https://spoiler.bet/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "spoiler": {
      "url": "https://spoiler.bet/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "spoiler": {
      "url": "https://spoiler.bet/mcp"
    }
  }
}

Available tools 12

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

paid
paid_board_snapshot
Get a board-wide snapshot of open calls and the public record, not one market. Price: 0.25 USDT per call, paid via x402 on X Layer.
paid_crypto_call_pack
Every open crypto call on the board, with public receipts. Price: 0.10 USDT per call, paid via x402 on X Layer.
paid_esports_call_pack
Every open esports call on the board, with public receipts. Price: 0.10 USDT per call, paid via x402 on X Layer.
paid_full_verdict
One called market in full depth: side, edge, probability, timeline, and on-chain proof. Price: 1.00 USDT per call, paid via x402 on X Layer.
paid_receipt_verify
Check one public receipt and its onchain proof. Price: 0.10 USDT per call, paid via x402 on X Layer.
paid_single_market_check
Ask about any market: our call and edge if we have one, or why it was screened out. Price: 0.05 USDT per call, paid via x402 on X Layer.
paid_spoiler_metrics
Board-wide win rate, Brier and the graded record, by category. Price: 0.05 USDT per call, paid via x402 on X Layer.
paid_top_edges_now
The five strongest open calls across the whole board right now. Price: 0.10 USDT per call, paid via x402 on X Layer.
paid_venue_gaps
Compare current Kalshi and Polymarket prices ranked by gap. Price: 0.50 USDT per call, paid via x402 on X Layer.
board
get_board
Read public Spoiler receipts, public meter counts, and public methodology summary.
lookup
lookup_market
Search public receipts by market text.
receipt
get_receipt
Read one public receipt by event id, slug, or commit hash prefix.

Endpoints

URLTransportStateLatencyChecked
https://spoiler.bet/mcp streamable-http answering 79 ms 15 min ago

Spoiler — questions

Answers built from our own checks of this server.

What can Spoiler do?
It exposes 12 tools, read directly from the server on our last check. Among them: get_board, get_receipt, lookup_market, paid_board_snapshot, paid_crypto_call_pack, paid_esports_call_pack and 6 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Spoiler working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 79 ms. The bar chart above shows every period we have measured.
The registry lists Spoiler as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Spoiler?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Spoiler need an API key?
No. Spoiler completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 12 of them are readable on this page. This is what we observed, not what the docs claim.