MCP.Market

Spirit Cards MCP server

online · 100% uptime
by spiritcards.fun·fun.spiritcards/spirit-cards-mcp·v0.1.0
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Read-only Spirit Cards MCP: PoW-mined NFT cards on Robinhood Chain — stats, cards, leaderboard.

A91/100grade A
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Safety scan
A91/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

Spirit Cards tools (9)

write = sends, deletes, buys or posts
  • find_nonceFree

    Grind a proof-of-work nonce for a miner address so it can mint immediately: work = keccak256(chainId ‖ core ‖ miner ‖ nonce), using the live requiredBits threshold. Returns the first nonce whose work has at least requiredBits leading zero bits, within a ~20 s wall-clock cap. If the difficulty is high it may return found:false — retry or lower maxAttempts.

  • get_cardFree

    Full profile of a Spirit Cards token by id: species, element, rarity tier, HP/ATK/DEF, and the deterministic on-chain seed. Works for any minted token id.

  • get_collection_statsFree

    Live collection statistics for Spirit Cards: total minted, max supply, current mint price (ETH), difficulty (requiredBits/baseBits), cooldown, merge fee, burned/forged counters, paused flag, chainId and contract.

  • get_leaderboardFree

    On-chain activity-points leaderboard (mine/merge/stake/pvp-win points), top N wallets.

  • get_mining_guideFree

    Step-by-step guide to mine a Spirit Card: the exact proof-of-work rule, the live difficulty / price / cooldown / chip discount, where to get a miner (browser at /mine, public CLI), the exact contract call, and how to get a valid nonce with the find_nonce tool.

  • get_poolFree

    Staking-pool / dividend status: accrued pool, split shares, vault total weight, undistributed rewards.

  • get_project_infoFree

    What Spirit Cards is: the game, the five-node loop (mine → merge → battle → stake → points), the chain (Robinhood Chain, CORE contract, explorer, ETH gas), official links, the collection (species / rarity tiers / battle elements) and the key economy (max supply, price step, fee split). Call get_mining_guide to start mining.

  • get_recent_activityFree

    Recent on-chain activity (mints / pack opens) from the latest blocks.

  • verify_nonceFree

    Recompute the proof-of-work for a (miner, nonce) pair exactly as the contract does: work = keccak256(chainId ‖ contract ‖ miner ‖ nonce). Returns the hash, its leading-zero-bit count, the current requiredBits threshold, and whether it would be accepted on-chain.

Public scan report

scanner v0.1.10 · 2026-10-14 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 620ms20/20
  • Tool poisoning9 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 8 days ago15/15
  • Maintainer identityendpoint served from the registry-verified namespace domain8/10
Overall 91/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Spirit Cards compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
91/100
higher than 85% of 48,255 servers
Tools
9
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
206 ms
faster than 63% of 30,031 servers

What its tools let an agent do: 9 read

Install Spirit Cards in Claude Code, Cursor or VS Code

claude mcp add --transport http spirit-cards-mcp https://spiritcards.fun/api/mcp
Add to Cursor

What the publisher says

From the Spirit Cards repository's README, as published. We do not edit it. Read it on GitHub

spirit-cards-mcp

A read-only Model Context Protocol (MCP) server for Spirit Cards (Proof of Card) — a proof-of-work minted collectible card game on Robinhood Chain — mainnet chainId 4663, live since 2026-10-05.

It runs over stdio, so Claude Desktop and Cursor can launch it with npx. It fetches live game data from the hosted web API and computes the proof-of-work locally with viem — so an agent can inspect the collection, verify a nonce, or even grind a valid nonce, without a wallet, a private key, or a single transaction.

Read-only. No keys, no secrets, no signing, no sending. Every network call is a plain GET.

Quick start

Run with npx (after publishing)

npx spirit-cards-mcp

Run from source

npm install
node src/index.mjs      # starts the stdio server (logs to stderr)

The server speaks MCP over stdin/stdout and logs only to stderr — it is normally launched by an MCP client, not by hand.

Use in Claude Desktop

Add this to claudedesktopconfig.json (~/Library/Application Support/Claude/ on macOS, %APPDATA%\Claude\ on Windows):

{
  "mcpServers": {
    "spirit-cards": {
      "command": "npx",
      "args": ["-y", "spirit-cards-mcp"],
      "env": { "SPIRIT_CARDS_API": "https://spiritcards.fun" }
    }
  }
}

Use in Cursor

Add this to .cursor/mcp.json (project) or ~/.cursor/mcp.json (global):

{
  "mcpServers": {
    "spirit-cards": {
      "command": "npx",
      "args": ["-y", "spirit-cards-mcp"],
      "env": { "SPIRIT_CARDS_API": "https://spiritcards.fun" }
    }
  }
}

Configuration

All data endpoints are read-only GETs:

  • /.well-known/ai.json — project descriptor (chain id, core contract, mechanics, links)
  • /stats/current.json — live supply, price, required difficulty (baseBits), cooldown
  • /api/meta/{tokenId} — card metadata
  • /api/points — points leaderboard
  • /api/pool — staking pool / emissions snapshot (accrued pool, split shares, vault weight)
  • /api/recent — recent on-chain activity

Tools

Proof-of-work

A nonce is valid when:

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Spirit Cards: common questions

Is Spirit Cards MCP server safe?
Yes, by our scan: it is graded A (91/100). Read the Spirit Cards safety report
How do I install Spirit Cards?
It runs remotely at spiritcards.fun. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Spirit Cards need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Spirit Cards maintained?
The last commit was 29 days ago (2026-10-06). The latest release is v0.1.0.
Is Spirit Cards up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Spirit Cards compare with other MCP servers?
safety score 91/100 (higher than 85% of 48,255 servers); tools 9 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.