ModelsAtlas
Explore
Atlas / MCP servers / longmans / Coin API

Coin APISAFE

mcp/longmans/coin-api
MCP server by longmans · Audited 2026-10-08
⚑ Report / re-scanSource ↗

A Model Context Protocol server that provides access to CoinMarketCap's cryptocurrency data. This server enables AI-powered applications to retrieve cryptocurrency listings, quotes, and detailed information about various coins.

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
3 3r · 0w · 0d
Transport
stdio
License
—
Stars
36
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

[](https://smithery.ai/server/coin-api-mcp)

A Model Context Protocol server that provides access to CoinMarketCap's cryptocurrency data. This server enables AI-powered applications to retrieve cryptocurrency listings, quotes, and detailed information about various coins.

Available Tools

  • listing-coins - Fetches a paginated list of all active cryptocurrencies with the latest market data.
  • start (integer, optional): Offset the start (1-based index) of the paginated list of items to return.
  • limit (integer, optional): Number of results to return (default: 10, max: 5000).
  • price_min (number, optional): Minimum USD price to filter results.
  • price_max (number, optional): Maximum USD price to filter results.
  • market_cap_min (number, optional): Minimum market cap to filter results.
  • market_cap_max (number, optional): Maximum market cap to filter results.
  • convert (string, optional): Calculate market quotes in multiple currencies.
  • sort (string, optional): Field to sort the list of cryptocurrencies by.
  • sort_dir (string, optional): Direction to order cryptocurrencies (asc or desc).
  • get-coin-info - Retrieves detailed information about a specific cryptocurrency.
  • id (string, optional): One or more comma-separated CoinMarketCap cryptocurrency IDs.
  • slug (string, optional): A comma-separated list of cryptocurrency slugs.
  • symbol (string, optional): One or more comma-separated cryptocurrency symbols.
  • get-coin-quotes - Fetches the latest market quotes for one or more cryptocurrencies.
  • id (string, optional): One or more comma-separated cryptocurrency CoinMarketCap IDs.
  • slug (string, optional): A comma-separated list of cryptocurrency slugs.
  • symbol (string, optional): One or more comma-separated cryptocurrency symbols.

Installation

Installing via Smithery

To install Crypto

Read from source at commit c8835639e6a0OBSERVED · 2026-10-08
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code
claude mcp add coin-api-mcp --env COINMARKETCAP_API_KEY=${COINMARKETCAP_API_KEY} -- uvx coin-api-mcp
claude-desktop
{
  "mcpServers": {
    "coin-api-mcp": {
      "command": "uvx",
      "args": [
        "coin-api-mcp"
      ],
      "env": {
        "COINMARKETCAP_API_KEY": "${COINMARKETCAP_API_KEY}"
      }
    }
  }
}
03

Exposed tools (3)

3 read · 0 write · 0 destructive.

ToolRiskDescription
get-coin-inforeadGet coins
get-coin-quotesread
listing-coinsreadReturns a paginated list of all active cryptocurrencies with latest market data
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
declared (4 observation(s))
Shell
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (1)

LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-08 · audit v0.4.1 · source sha c8835639e6a0full audit observations/trust-audit/mcp-server/longmans__coin-api.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-08c8835639e6a0SAFEB89first audit
06

Questions

What is the Coin API MCP server?

A Model Context Protocol server that provides access to CoinMarketCap's cryptocurrency data. This server enables AI-powered applications to retrieve cryptocurrency listings, quotes, and detailed information about various coins.

What tools does Coin API expose?

3 in total: 3 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Coin API safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does Coin API need?

It reads COINMARKETCAP_API_KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.

How does Coin API run?

It speaks stdio, so it runs as a local process your client starts. It is published on PyPI as coin-api-mcp.

How current is this page?

The grade is for one exact copy of the source (c8835639e6a0), read on 2026-10-08. The repository is watched and re-audited when it changes.

Advertisement