# CARDZ MCP

> Pokémon & One Piece PSA 10 data for any AI agent

- name: io.github.cardzgame/cardz-mcp
- version: 1.1.4
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 80/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.cardzgame%2Fcardz-mcp
- tools: https://api.protogrid.dev/v1/servers/io.github.cardzgame%2Fcardz-mcp/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "cardz-mcp": {
      "type": "http",
      "url": "https://mcp.cardz.game/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-100% +updated-16d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 80/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 3 of 3 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 909 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 50 (weight 15)

- pass `stability.changes`: 3 tool changes in 30 days
- fail `stability.rug_pull`: 3 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 3, about 909 tokens to load them all
- tool set hash: 8e7c9017abf226320e9cfeba8c179e80
- tools last changed: 2026-10-26T13:42:04.099Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.cardzgame/cardz-mcp.svg)](https://protogrid.dev/servers/io.github.cardzgame/cardz-mcp)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-26 `get_market` changed (description, inputSchema) **meaning changed**
  - before: Read CARDZ published market-cap rankings for Pokémon, One Piece or the combined index. Market cap is PSA 10 reference price multiplied by verified PSA 10 population. Results include the published order and effective date for the tracked index.
  - after: Use this when the user asks about the top-ranked cards by market cap, wants to know which cards are most valuable by the CARDZ index, or requests a leaderboard for Pokémon or One Piece graded cards. Returns the published ranking with PSA 10 prices, populations, market caps, and the effective date of the data. Market cap = PSA 10 reference price × verified PSA 10 population. This index does not represent the full trading-card market.
- 2026-10-26 `get_card` changed (description, inputSchema) **meaning changed**
  - before: Read one exact CARDZ card ID. Results include PSA 10 reference price, population, market cap, changes, canonical URL, metric dates and daily history. Prices are daily observations in USD rather than executable live quotes; null values mean unavailable data.
  - after: Use this when the user wants detailed metrics for a specific card: PSA 10 reference price, population, market cap, price changes, daily history, and canonical URL. Requires an exact card ID from search_cards. Prices are daily published observations in USD, not live or executable quotes. Null values mean data is unavailable for that field — do not substitute zero.
- 2026-10-26 `search_cards` changed (description, inputSchema) **meaning changed**
  - before: Search CARDZ public graded Pokémon or One Piece cards by name or collector number. Results contain candidate printings, languages, sets and canonical card links; multiple candidates may match a query. An empty result means no published match.
  - after: Use this when the user names a card, set, or collector number and wants to find matching printings or get card IDs for further lookup. Searches CARDZ public graded Pokémon or One Piece cards. Returns candidate printings with names, sets, languages, market ranks, PSA 10 prices, populations, market caps, and canonical card links. Multiple candidates may match; call get_card with the exact id for full metrics. An empty result means no published match.

Full history: https://api.protogrid.dev/v1/servers/io.github.cardzgame%2Fcardz-mcp/changes

## Remotes

- https://mcp.cardz.game/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (3)

- `get_card`: Use this when the user wants detailed metrics for a specific card: PSA 10 reference price, population, market cap, price changes, daily history, and canonical URL. Requires an exact card ID from search_cards. Prices are daily published observations in USD, not live or executable quotes. Null values mean data is unavailable for that field — do not substitute zero.
- `get_market`: Use this when the user asks about the top-ranked cards by market cap, wants to know which cards are most valuable by the CARDZ index, or requests a leaderboard for Pokémon or One Piece graded cards. Returns the published ranking with PSA 10 prices, populations, market caps, and the effective date of the data. Market cap = PSA 10 reference price × verified PSA 10 population. This index does not represent the full trading-card market.
- `search_cards`: Use this when the user names a card, set, or collector number and wants to find matching printings or get card IDs for further lookup. Searches CARDZ public graded Pokémon or One Piece cards. Returns candidate printings with names, sets, languages, market ranks, PSA 10 prices, populations, market caps, and canonical card links. Multiple candidates may match; call get_card with the exact id for full metrics. An empty result means no published match.