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coingecko_markets

Fetch cryptocurrency market rows from CoinGecko by quote currency with pagination and row limits for market data analysis; not intended for real-time trading.

Instructions

CoinGecko markets. Returns cryptocurrency market rows from CoinGecko. This endpoint supports the documented vs_currency enum and is not intended for real-time trading.

Input Schema

NameRequiredDescriptionDefault
pageNoPage number, default 1
limitNoRows to return, default 100, max 100
vs_currencyNoQuote currency

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.17.5
    • addedInput schema / properties / vs_currency / enum
      Added value: +[
+  "btc",
+  "eth",
+  "ltc",
+  "bch",
+  "bnb",
+  "eos",
+  "xrp",
+  "xlm",
+  "link",
+  "dot",
+  "yfi",
+  "sol",
+  "usd",
+  "aed",
+  "ars",
+  "aud",
+  "bdt",
+  "bhd",
+  "bmd",
+  "brl",
+  "cad",
+  "chf",
+  "clp",
+  "cny",
+  "czk",
+  "dkk",
+  "eur",
+  "gbp",
+  "gel",
+  "hkd",
+  "huf",
+  "idr",
+  "ils",
+  "inr",
+  "jpy",
+  "krw",
+  "kwd",
+  "lkr",
+  "mmk",
+  "mxn",
+  "myr",
+  "ngn",
+  "nok",
+  "nzd",
+  "php",
+  "pkr",
+  "pln",
+  "rub",
+  "sar",
+  "sek",
+  "sgd",
+  "thb",
+  "try",
+  "twd",
+  "uah",
+  "vef",
+  "vnd",
+  "zar",
+  "xdr",
+  "xag",
+  "xau",
+  "bits",
+  "sats"
+]
  2. First observedv1.0.0

TDQS

C2.8/5.0
Behavior2/5

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

With no annotations, the description carries the full burden, and it only discloses that the data is not for real-time trading. It says nothing about pagination behavior (page/limit interplay), rate limits, snapshot cadence, or what the returned rows contain, which matters for a market-data listing tool.

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

Conciseness3/5

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

It is short and front-loaded, but the first sentence ('CoinGecko markets.') merely restates the tool name and the second repeats the source ('from CoinGecko'). The useful caveat about real-time trading sits last, after some filler.

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

Completeness2/5

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

For a 3-parameter data tool with no annotations and no output schema, the description should explain what a market row includes, how paging works, and freshness expectations. It covers none of this, leaving an agent without enough context to call it correctly or interpret results.

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

Parameters3/5

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

Schema description coverage is 100%, so page, limit, and vs_currency are already documented. The description adds a small note that the documented vs_currency enum is supported, but offers no extra meaning about pagination or limit interaction beyond the schema. Baseline 3 is appropriate.

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

Purpose4/5

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

The description gives a concrete verb and resource: it 'returns cryptocurrency market rows from CoinGecko,' which is more specific than the bare tool name. However, it never distinguishes itself from adjacent siblings like coingecko_coin, coingecko_exchanges, coingecko_gainers_losers, or coingecko_search, so an agent still has to guess which CoinGecko tool to pick.

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?

The only usage signal is the negative caveat 'not intended for real-time trading,' which hints at delayed data but names no alternative tool and no positive condition for choosing this over other CoinGecko endpoints. There is no when-to-use guidance at all.

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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