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Reported issues for truss44-mcp-crypto-price

Pod holds 19 of 23 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded entirely — a maintainer's release checklist is not a warning to a prospective user.

Back to truss44-mcp-crypto-price.

Most discussed

Add homepage landing page for MCP crypto tool

Create a dedicated homepage at for the MCP crypto price server.

Scope

Notes

Read the thread · 2026-03-24 · closed · 2 comments

fix: HTTP server 404 and API key not applied when connecting with query parameters

Bug Report

Problem

When connecting to the MCP HTTP server and providing a COINCAP_API_KEY via query parameter (e.g. /mcp?coincapApiKey=xxx), two bugs cause the connection to fail with a 404.

Root Causes

Bug 1 — URL route matching breaks with query parameters

In src/http.ts, routes are matched against req.url directly:

if (req.url === '/mcp' || req.url === '/') {

req.url includes the full query string, so /mcp?coincapApiKey=xxx never equals '/mcp'. Th

Read the thread · 2026-03-21 · closed · 2 comments

Feature: support asset lookup by name in addition to symbol

Summary

Allow users to look up cryptocurrencies by their full name (e.g., "Bitcoin", "Ethereum") in addition to their ticker symbol (e.g., "BTC", "ETH").

Motivation

Users interacting through natural language often say "what's the price of Bitcoin?" rather than "what's the price of BTC?". Currently, passing "Bitcoin" as the symbol argument returns "Could not find cryptocurrency with symbol BITCOIN" because the lookup does an exact match against the ticker field.

Proposed change

Read the thread · 2026-03-21 · closed · 2 comments

Feature: add get-top-assets tool to list top coins by market cap

Summary

Add a new MCP tool get-top-assets that returns the top N cryptocurrencies ranked by market cap, without requiring the user to already know a symbol.

Motivation

Currently all three tools require the user to know a specific coin symbol upfront. There's no discovery mechanism — a user can't ask "what are the top 10 coins right now?" without already knowing what to look for. This is a common first question when doing crypto research.

Proposed tool spec

Tool name: `get-top

Read the thread · 2026-03-21 · closed · 2 comments

Improvement: validate v3 API response shape before caching

Problem

makeCoinCapRequest casts the v3 API response directly to the expected type without any validation:

const data = await v3Response.json() as T;
setCacheData(cacheKey, data);
return data;

CoinCap v3 (rest.coincap.io/v3) is a distinct API version that may return a different JSON schema than v2 (api.coincap.io/v2). For example, v3 may wrap responses differently, rename fields, or change data types. If the shapes differ, the mismatch will propagate silently — the response

Read the thread · 2026-03-21 · closed · 2 comments

Bug: SERVER_CONFIG.version is hardcoded and out of sync

Problem

src/config/index.ts hardcodes the server version:

export const SERVER_CONFIG = {
  name: "mcp-crypto-price",
  version: "2.1.0",  // hardcoded
} as const;

The current package.json version is 2.1.5. The MCP server advertises 2.1.0 to clients during the initialize handshake, which is stale and will continue drifting further with every release.

Suggested Fix

Import the version from package.json at build time instead of hardcoding it:

import { createRe

[Read the thread](https://github.com/truss44/mcp-crypto-price/issues/117) · 2026-03-21 · closed · 2 comments

### Improvement: add unit tests for tool handlers

## Problem

The test suite covers `src/services/coincap.ts` and `src/services/formatters.ts`, but there are no tests for the three tool handler functions:

- `handleGetPrice` (`src/tools/price.ts`)
- `handleGetMarketAnalysis` (`src/tools/market.ts`)
- `handleGetHistoricalAnalysis` (`src/tools/historical.ts`)

The handlers contain meaningful logic: symbol lookup, null-checking API results, error formatting, and Zod schema parsing. These paths are currently untested.

## What to test

- Valid symb

[Read the thread](https://github.com/truss44/mcp-crypto-price/issues/119) · 2026-03-21 · closed · 2 comments

### Bug: asset lookup fails for coins outside top 100

## Problem

All three tool handlers look up a coin by calling `getAssets()` and filtering the result by symbol:

```ts
// src/tools/price.ts (and market.ts, historical.ts)
const assetsData = await getAssets();
const asset = assetsData.data.find(
  (a) => a.symbol.toUpperCase() === upperSymbol
);

The CoinCap /assets endpoint defaults to returning only the top 100 assets by market cap (limit=100). Any coin ranked below #100 will not appear in the response, causing the tool to return:

Read the thread · 2026-03-21 · closed · 2 comments

Most recent

MCP best-practice fixes: isError on validation, server description, resource templates

Feature Request

Apply MCP 2025-11-25 spec best practices that are currently missing.

1. isError on validation errors (SEP-1303)

Input validation errors should be returned as tool execution errors with isError: true rather than throwing protocol errors. This enables model self-correction.

2. Server description field

The spec now supports an optional description on server info during initialization. Add a brief description to the McpServer constructor.

3. Resource template

Read the thread · 2026-07-02 · closed · 1 comment

Add get-asset-info tool for detailed asset metadata

Feature Request

Add a new get-asset-info MCP tool that returns full asset details including supply, max supply, VWAP, change percentages, and asset ID.

Current State

The get-crypto-price tool returns a formatted summary but omits supply, maxSupply, and the asset ID (which users need for other calls).

Proposed Tool

Read the thread · 2026-07-02 · closed · 0 comments

Add get-price-conversion tool for multi-currency price conversion

Feature Request

Add a new get-price-conversion MCP tool that converts any cryptocurrency price to a user-specified fiat or crypto currency (EUR, GBP, JPY, BTC, ETH, etc.).

Current State

All prices are returned in USD only. The get-rates tool returns conversion rates but users must manually compute converted prices.

Proposed Tool

Read the thread · 2026-07-02 · closed · 0 comments

Add get-candlestick-data tool for OHLCV candle data

Feature Request

Add a new get-candlestick-data MCP tool that returns open/high/low/close/volume candles for a given exchange pair and interval.

Current State

The get-historical-analysis tool only returns price points, not full OHLCV candles. CoinCap has a /candles endpoint that is not currently used.

Proposed Tool

Read the thread · 2026-07-02 · closed · 0 comments

Add compare-crypto tool for side-by-side cryptocurrency comparison

Feature Request

Add a new compare-crypto MCP tool that compares price, 24h change, volume, market cap, and rank for 2-5 cryptocurrencies in a single call.

Current State

Users must call get-crypto-price multiple times and manually compare results.

Proposed Tool

Read the thread · 2026-07-02 · closed · 0 comments

Add get-global-metrics tool for overall crypto market overview

Feature Request

Add a new get-global-metrics MCP tool that returns total market cap, 24h volume, BTC dominance, and number of active cryptocurrencies.

Current State

No global market overview tool exists. Users can only query individual assets.

Proposed Tool

Why

CoinMarketCap has `get_global_metri

Read the thread · 2026-07-02 · closed · 0 comments

Add search-assets tool for fuzzy cryptocurrency search

Feature Request

Add a new search-assets MCP tool that allows users to fuzzy search for cryptocurrencies by name, symbol, or partial match.

Current State

The searchAsset function exists internally in src/services/coincap.ts but is not exposed as a public tool. Users can only get price info for a single matched asset.

Proposed Tool

Read the thread · 2026-07-02 · closed · 0 comments

Add MCP tool annotations and parameter descriptions to HTTP discovery

This issue tracks improvements to the MCP server metadata for better client discovery and usability.

Changes

Tool Annotations

Added MCP tool annotations to all tools in the HTTP discovery server card (src/http.ts):

Each tool now includes:

Read the thread · 2026-03-23 · closed · 1 comment

fix: CoinCap v3 API schema drift breaks all tools (nullable rank, renamed fields)

Bug Report

Summary

All four MCP tools (get-crypto-price, get-market-analysis, get-historical-analysis, get-top-assets) are broken due to schema drift between the code and the current CoinCap v3 API spec.

Root Cause

The CoinCap v3 API has drifted from what the code expects in several ways:

  1. rank field is now nullable ("nullable": true in the API spec) — Our Zod schema had rank: z.string() (non-nullable). Any asset with a null rank triggers a Zod parse error i

Read the thread · 2026-03-21 · closed · 1 comment

feat: Remove CoinCap v2 API support, require API key for v3

Summary

The CoinCap v2 API (api.coincap.io/v2) has been sunset and is no longer available. Only the v3 API (rest.coincap.io/v3) remains operational. This MCP server currently tries v3 first and falls back to v2 — that fallback is now broken.

Changes Required

Read the thread · 2026-03-21 · closed · 1 comment

feat: replace Smithery with native MCP HTTP transport for Coolify deployment

Summary

Remove the Smithery dependency and replace it with a native StreamableHTTPServerTransport from @modelcontextprotocol/sdk. This enables direct Docker deployment without needing the Smithery CLI toolchain.

Changes

Read the thread · 2026-03-21 · closed · 1 comment

The remaining reports are on the project's issue tracker.