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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "gembook": {
      "type": "http",
      "url": "https://gembook.xyz/api/mcp/mcp"
    }
  }
}

claude mcp add --transport http gembook https://gembook.xyz/api/mcp/mcp

[mcp_servers.gembook]
url = "https://gembook.xyz/api/mcp/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "gembook": {
      "type": "remote",
      "url": "https://gembook.xyz/api/mcp/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "gembook": {
      "type": "http",
      "url": "https://gembook.xyz/api/mcp/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=gembook&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vZ2VtYm9vay54eXovYXBpL21jcC9tY3AifQ%3D%3D"
}

{
  "servers": {
    "gembook": {
      "type": "http",
      "url": "https://gembook.xyz/api/mcp/mcp"
    }
  }
}

{
  "mcpServers": {
    "gembook": {
      "httpUrl": "https://gembook.xyz/api/mcp/mcp"
    }
  }
}

extensions:
  "gembook":
    enabled: true
    name: "gembook"
    type: streamable_http
    uri: "https://gembook.xyz/api/mcp/mcp"
    timeout: 300

Quality 91 / 100strong

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene100 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations3 of 3 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 544 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 544 tokens to load them all · tool set 390849921b41 · checked 2026-10-19 12:00 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 76 / 100

no-repository

provenance55

liveness100

freshness65

hygiene80

+dns-namespace +website +reachable +uptime-100% ~updated-130d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://gembook.xyz/api/mcp/mcp` streamable-http	none	yes	100%	578 ms	2025-11-25	2026-10-19

Tools (3)

`get_methodology_summary`read-only	Returns a short summary of Gembook's valuation + trust methodology (what counts as a verified sale, confidence tiers, published error rates). Call this when a user asks how the prices are computed or whether they can be trusted.
`lookup_card_price`read-only	Get Gembook's fair-value estimate (USD) for a PSA-graded vintage Pokémon card (WotC era, Base Set through Skyridge, 1999–2003). Returns fair value, range, confidence tier, comp count, and the card page URL. Call this when a user asks what a vintage Pokémon card is worth or whether a price is fair. Scope is PSA-graded vintage Pokémon ONLY — other graders, eras, or TCGs are out of scope.
`lookup_pop_report`read-only	Get the PSA population (number of slabs graded per grade) for a vintage Pokémon card across all grades. Call this when a user asks how rare a PSA grade is for a card. Scope: PSA-graded vintage Pokémon (Base Set through Skyridge).

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "xyz.gembook/gembook",
  "title": "Gembook — PSA Vintage Pokémon Prices & Pop",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://gembook.xyz/api/mcp/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.1.0",
  "websiteUrl": "https://gembook.xyz",
  "description": "Neutral prices + PSA population for PSA-graded vintage Pokémon (WotC 1999–2003). Read-only."
}