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Glama

crypto-mcp-server

Server Details

CoinGecko-backed live prices, market caps, DeFi metrics — no per-user API key needed.

Status
Healthy
Last Tested
Transport
Streamable HTTP
URL

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MCP client
Glama
MCP server

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Tool DescriptionsA

Average 3.9/5 across 2 of 2 tools scored.

Server CoherenceA
Disambiguation5/5

The two tools are completely distinct: one for crypto prices and one for fiat exchange rates. No overlap or ambiguity.

Naming Consistency5/5

Both tool names follow a consistent noun_noun pattern ('crypto_prices', 'exchange_rates'), making them predictable.

Tool Count2/5

Only two tools for a crypto server is very thin. Users would expect additional tools like historical data, conversions, or coin details.

Completeness2/5

Obvious gaps: no direct fiat-to-crypto conversion, no historical price data, no coin metadata. Agents would struggle to perform common tasks.

Available Tools

2 tools
crypto_pricesA
Read-only
Inspect

Get current cryptocurrency prices and market data from CoinGecko. Args: coins: List of coin IDs (e.g. ['bitcoin', 'ethereum']). Empty for top coins. max_results: Max results (default 50)

ParametersJSON Schema
NameRequiredDescriptionDefault
coinsNo
max_resultsNo
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already provide readOnlyHint=true and openWorldHint=true, indicating safe data retrieval from an external source. The description adds context that data comes from CoinGecko and includes 'market data' beyond prices, which is useful.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences plus a bullet list, front-loaded with the purpose. Every part is efficient and necessary.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description lacks details about the return format or structure of the market data. Since there is no output schema, it would benefit from specifying what fields or data are returned.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, but the description explains both parameters: 'coins' as a list of coin IDs (empty for top coins) and 'max_results' with default 50. This adds meaning beyond the schema types.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it retrieves current cryptocurrency prices and market data from CoinGecko, with a specific verb ('Get') and resource ('cryptocurrency prices and market data'). It is distinct from the sibling tool 'exchange_rates'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for crypto prices but does not explicitly state when to use or avoid this tool. The sibling 'exchange_rates' provides differentiation, but no direct guidance is given.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

exchange_ratesA
Read-only
Inspect

Get current currency exchange rates. Args: base_currency: Base currency code (default 'USD')

ParametersJSON Schema
NameRequiredDescriptionDefault
base_currencyNoUSD
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint and openWorldHint. Description adds 'current' and default base_currency, but no details on data source, update frequency, or rate format. No contradiction.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, front-loaded purpose, no fluff. Every sentence adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema; description omits return format (e.g., which rates, timestamp, structure). Adequate for a simple tool but could be more complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema coverage, the description provides the only parameter info ('base_currency code (default USD)'), adding meaning beyond the schema's type and default.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clear verb+resource: 'Get current currency exchange rates'. Immediately distinguishes from sibling tool 'crypto_prices' by focusing on fiat currencies.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool vs the sibling 'crypto_prices'. Does not specify context, limitations, or alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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