← MCP Reliability Index / Finance & Data

Spoiler

io.github.zerozaky/spoiler

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

healthy

status

tools exposed

1804ms

connect latency

3f7bbe617618

schema fingerprint

Tools (12)

get_board

Read public Spoiler receipts, public meter counts, and public methodology summary.

get_receipt

Read one public receipt by event id, slug, or commit hash prefix.

lookup_market

Search public receipts by market text.

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_receipt_verify

Check one public receipt and its onchain proof. Price: 0.10 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_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_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_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_venue_gaps

Compare current Kalshi and Polymarket prices ranked by gap. Price: 0.50 USDT per call, paid via x402 on X Layer.

Endpoint

https://spoiler.bet/mcp
Category: Finance & Data · Last checked: 2026-07-30T14:01:23Z

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What this means. This server responded to the MCP handshake and listed its tools without authentication. The schema fingerprint lets us flag if tool signatures silently change (schema drift) between checks.