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chainpulse — real-time crypto + prediction market data for AI agents

by md.fastdb.in · remote · no sign-in to list tools · v0.2.0 · published by in.fastdb.md

Crypto prices, gas, DeFi TVL, and live Polymarket odds. x402 pay-per-call, $0.001, no API key.

Changes · 7
CompareRegistry entry

7 tools: 7 change things.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http chainpulse https://md.fastdb.in/pulse/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warncrypto_prices

    The input schema at properties.coins.description contains a 42-character base64 string.

    Matched text

    inputSchema.properties.coins.description: "...gecko:solana","base:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"]"

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

7 tools

Changes things 7Claude Code: ask
  • crypto_pricesReal-time USD spot prices for crypto assets.1 finding

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.

    Findings

    • Warn

      The input schema at properties.coins.description contains a 42-character base64 string.

      Matched text

      inputSchema.properties.coins.description: "...gecko:solana","base:0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"]"

      What this check looks for
    Description, as the server wrote it
    Real-time USD spot prices for crypto assets. Accepts major symbols (BTC, ETH, SOL, USDC, USDT, DAI, BNB, XRP, ...), any CoinGecko id as "coingecko:<id>", or any token by "<chain>:<tokenAddress>". Aggregated feed with per-coin confidence score, ~15s freshness. Paid tool: $0.001 per call via x402 (USDC on Base).
  • defi_tvlCurrent total value locked (USD) for DeFi protocols by DefiLlama slug (e.g.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Current total value locked (USD) for DeFi protocols by DefiLlama slug (e.g. uniswap, aave, lido). Paid tool: $0.001 per call via x402 (USDC on Base).
  • gas_pricesLive gas across chains (ethereum, base, arbitrum, optimism, polygon): current gas price, next-block base fee, slow/standard/fast priority-fee tiers straight from chain RPC, native …No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Live gas across chains (ethereum, base, arbitrum, optimism, polygon): current gas price, next-block base fee, slow/standard/fast priority-fee tiers straight from chain RPC, native token USD price, and the USD cost of a simple transfer so chains compare without unit math. Paid tool: $0.001 per call via x402 (USDC on Base).
  • polymarket_moversPolymarket prediction markets with the biggest odds swings in the last 24 hours, filtered to liquid markets (default $10k+ daily volume), most-moved first.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Polymarket prediction markets with the biggest odds swings in the last 24 hours, filtered to liquid markets (default $10k+ daily volume), most-moved first. The fastest way to spot where consensus is shifting. Paid tool: $0.001 per call via x402 (USDC on Base).
  • polymarket_oddsLive Polymarket prediction market odds.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Live Polymarket prediction market odds. Search any topic free-text ("fed rate cut", "world cup winner") or fetch one market by its slug. Returns normalized markets: outcomes, prices, bid/ask spread, 24h volume, liquidity, resolution date, and the polymarket.com URL. ~15s freshness. Paid tool: $0.001 per call via x402 (USDC on Base).
  • polymarket_resolvingActive Polymarket prediction markets resolving within the next N hours (default 24), sorted by 24h volume, with live prices.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Active Polymarket prediction markets resolving within the next N hours (default 24), sorted by 24h volume, with live prices. For tracking imminent event outcomes. Paid tool: $0.001 per call via x402 (USDC on Base).
  • service_infoFree.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Free. Service, pricing, and payment details for the chainpulse tools on this server.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.2.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http chainpulse https://md.fastdb.in/pulse/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__chainpulse__crypto_prices",
      "mcp__chainpulse__gas_prices",
      "mcp__chainpulse__defi_tvl",
      "mcp__chainpulse__polymarket_odds",
      "mcp__chainpulse__polymarket_movers",
      "mcp__chainpulse__polymarket_resolving",
      "mcp__chainpulse__service_info"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as chainpulse. Review it before you use it.