Agent skill

Coingecko API

Fetch token metadata, prices by contract address or CoinGecko ID, asset platform mappings, and token lists via the CoinGecko API in Nethereum.DataServices

MITAuto-check passedBackend & APIs

Install Coingecko API

skills CLI

$ npx skills add Nethereum/Nethereum --skill coingecko-api -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum coingecko-api --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/nethereum-skills/skills/coingecko-api .claude/skills/coingecko-api && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "coingecko-api" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/coingecko-api into .claude/skills/coingecko-api/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coingecko-api", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/coingecko-api

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Nethereum/Nethereum --skill coingecko-api -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum coingecko-api --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/nethereum-skills/skills/coingecko-api .agents/skills/coingecko-api && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "coingecko-api" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/coingecko-api into .agents/skills/coingecko-api/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coingecko-api", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Nethereum/Nethereum --skill coingecko-api -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum coingecko-api --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/nethereum-skills/skills/coingecko-api .cursor/skills/coingecko-api && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "coingecko-api" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/coingecko-api into .cursor/skills/coingecko-api/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coingecko-api", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Nethereum/Nethereum.git --path plugins/nethereum-skills/skills/coingecko-api

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Nethereum/Nethereum --skill coingecko-api -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum coingecko-api --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/nethereum-skills/skills/coingecko-api .gemini/skills/coingecko-api && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "coingecko-api" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/coingecko-api into .gemini/skills/coingecko-api/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coingecko-api", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Nethereum/Nethereum coingecko-api

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Nethereum/Nethereum --skill coingecko-api -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/nethereum-skills/skills/coingecko-api .github/skills/coingecko-api && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "coingecko-api" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/coingecko-api into .github/skills/coingecko-api/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coingecko-api", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Nethereum/Nethereum --skill coingecko-api -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum coingecko-api --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/nethereum-skills/skills/coingecko-api .opencode/skills/coingecko-api && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "coingecko-api" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/coingecko-api into .opencode/skills/coingecko-api/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coingecko-api", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: coingecko-api
GitHub stars: 2.3k
Token cost: ~1.2k tokens
SKILL.md length: 152 words
Files: 1
Skills in repo: 71
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Fetch token metadata, prices by contract address or CoinGecko ID, asset platform mappings, and token lists via the CoinGecko API in Nethereum.DataServices

Backend & APIs work in your project
SKILL.md covers Installation, Quick Start, Available Methods and Asset Platforms, plus 6 more sections
Calls dotnet

What it does

Coingecko API is an agent skill from Nethereum/Nethereum. Fetch token metadata, prices by contract address or CoinGecko ID, asset platform mappings, and token lists via the CoinGecko API in Nethereum.DataServices

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs. The repository describes itself as: Ethereum .Net cross platform integration library. The licence is MIT.

When your agent uses it

Backend & APIs work in your project

Example prompts

“/coingecko-api”

What it can do on your machine

Read from SKILL.md and the folder at commit 229f278. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- dotnet
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- nethereum.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Coingecko API loads about 1.2k tokens when it runs. Until then it costs about 42 tokens; SKILL.md has 152 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~42
When it runs · the whole SKILL.md, loaded when a task matches: ~1.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Nethereum/Nethereum at commit 229f278, republished under its MIT licence (© Nethereum). 152 words, ~1,176 tokens.

Download SKILL.mdSave it as .claude/skills/coingecko-api/SKILL.md (or your agent's skills folder).

name: coingecko-api
description: Fetch token metadata, prices by contract address or CoinGecko ID, asset platform mappings, and token lists via the CoinGecko API in Nethereum.DataServices
user-invocable: true

CoinGecko API

Access CoinGecko token metadata, pricing, and asset platform mappings using Nethereum.DataServices.

NuGet Package: Nethereum.DataServices

Installation

bash

dotnet add package Nethereum.DataServices

Quick Start

csharp

using Nethereum.DataServices.CoinGecko;

var coingecko = new CoinGeckoApiService();

// Map chain ID to CoinGecko platform
string platformId = await coingecko.GetPlatformIdForChainAsync(chainId: 1);
// "ethereum"

// Get token list for a chain
var tokenList = await coingecko.GetTokenListForChainAsync(chainId: 1);
Console.WriteLine($"Ethereum tokens: {tokenList.Tokens.Count}");

// Get prices by CoinGecko ID
var prices = await coingecko.GetPricesAsync(new[] { "ethereum", "usd-coin" }, "usd");
Console.WriteLine($"ETH: ${prices["ethereum"]["usd"]}");

// Get price by contract address
decimal? usdcPrice = await coingecko.GetTokenPriceByContractAsync(
    "ethereum", "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", "usd");

Available Methods

Method	Returns	Description
`GetAssetPlatformsAsync(forceRefresh?)`	`List<CoinGeckoAssetPlatform>`	All blockchain platforms with chain identifiers
`GetPlatformIdForChainAsync(chainId)`	`string`	Map numeric chain ID to CoinGecko platform ID
`GetCoinsListAsync(forceRefresh?)`	`List<CoinGeckoCoin>`	Every coin with platform/address mappings
`GetTokenListForChainAsync(chainId, forceRefresh?)`	`CoinGeckoTokenList`	Token list for a chain (address, symbol, name, decimals, logo)
`GetTokenListForPlatformAsync(platformId, forceRefresh?)`	`CoinGeckoTokenList`	Token list by platform ID
`GetTokensForChainAsync(chainId, forceRefresh?)`	`List<CoinGeckoToken>`	Flat token collection for a chain
`GetPricesAsync(geckoIds, vsCurrency)`	`Dictionary<string, Dictionary<string, decimal>>`	Batch prices by CoinGecko ID
`GetTokenPriceByContractAsync(platformId, address, vsCurrency)`	`decimal?`	Price by contract address (null if not found)
`FindCoinGeckoIdAsync(contractAddress, chainId)`	`string`	Map contract address to CoinGecko ID
`FindCoinGeckoIdsAsync(addresses, chainId)`	`Dictionary<string, string>`	Batch address-to-ID mapping
`ClearCache()`	`void`	Clear all cached data

Asset Platforms

csharp

var platforms = await coingecko.GetAssetPlatformsAsync();
foreach (var p in platforms.Where(x => x.ChainIdentifier.HasValue).Take(10))
    Console.WriteLine($"Chain {p.ChainIdentifier}: {p.Id} ({p.Name})");

Token Lists

csharp

var tokenList = await coingecko.GetTokenListForChainAsync(chainId: 1);
foreach (var token in tokenList.Tokens.Take(5))
    Console.WriteLine($"{token.Symbol}: {token.Name} ({token.Address})");

Pricing

csharp

// By CoinGecko ID (batches at 250 per request)
var prices = await coingecko.GetPricesAsync(
    new[] { "ethereum", "usd-coin", "bitcoin" }, "usd");

// By contract address
decimal? price = await coingecko.GetTokenPriceByContractAsync(
    "ethereum", "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", "usd");

Address-to-ID Mapping

csharp

string geckoId = await coingecko.FindCoinGeckoIdAsync(
    "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", chainId: 1);
// "usd-coin"

var ids = await coingecko.FindCoinGeckoIdsAsync(
    new[] { "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", "0xdAC17F958D2ee523a2206206994597C13D831ec7" },
    chainId: 1);

Cache Configuration

csharp

var config = new CoinGeckoCacheConfiguration
{
    Enabled = true,
    PlatformsCacheDuration = TimeSpan.FromHours(24),
    CoinsListCacheDuration = TimeSpan.FromHours(1),
    TokenListCacheDuration = TimeSpan.FromHours(1),
    RateLimitDelay = TimeSpan.FromMilliseconds(1500)
};

var coingecko = new CoinGeckoApiService(config);

// Disable caching (for tests)
var testService = new CoinGeckoApiService(CoinGeckoCacheConfiguration.Disabled);

// Force refresh specific cache
var fresh = await coingecko.GetAssetPlatformsAsync(forceRefresh: true);

// Clear all caches
coingecko.ClearCache();

Key Namespaces

Nethereum.DataServices.CoinGecko — Service, cache config, and response models

Documentation

Files

Just SKILL.md in plugins/nethereum-skills/skills/coingecko-api of Nethereum/Nethereum.

Open the folder on GitHubat commit 229f278

Compare with similar skills

Coingecko API next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Coingecko API compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Coingecko API this skillNethereum/Nethereum	2.3k	—	~1.2k	Automated safety check: Pass	MIT	3 days ago
Configuring Horizoncoollabsio/coolify	63k	4 repos	~898	Automated safety check: Pass	MIT	today
Nestjs Best Practicesrolling-scopes/rsschool-app	10k	6 repos	~1.2k	Automated safety check: Pass	MIT	4 days ago
Sub2API AdminWei-Shaw/sub2api	43k	1 repos	~717	Automated safety check: Pass	LGPL-3.0	today
Firecrawl Build Onboardingfirecrawl/firecrawl	190k	1 repos	~1.4k	Automated safety check: Notes	ISC	today
Obsidian BasesAtmosphere/atmosphere	3.8k	22 repos	~3.2k	Automated safety check: Pass	Apache-2.0	2 days ago

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Questions about Coingecko API

What does Coingecko API do?

Fetch token metadata, prices by contract address or CoinGecko ID, asset platform mappings, and token lists via the CoinGecko API in Nethereum.DataServices. Coingecko API is an agent skill from Nethereum/Nethereum.

When should I use Coingecko API?

Coingecko API fits situations like: backend & APIs work in your project.

How do I install Coingecko API in Claude Code?

Run `npx skills add Nethereum/Nethereum --skill coingecko-api -a claude-code`. Or copy the skill folder (plugins/nethereum-skills/skills/coingecko-api in Nethereum/Nethereum) into .claude/skills/coingecko-api in your project. Claude Code loads it when a task matches its description.

How do I install Coingecko API in Codex?

Run `npx skills add Nethereum/Nethereum --skill coingecko-api -a codex`. Or copy the skill folder (plugins/nethereum-skills/skills/coingecko-api in Nethereum/Nethereum) into .agents/skills/coingecko-api in your project. Codex loads it when a task matches its description.

Can I use Coingecko API in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Nethereum/Nethereum --skill coingecko-api -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/coingecko-api, .gemini/skills/coingecko-api, .github/skills/coingecko-api and .opencode/skills/coingecko-api in your project.

What does Coingecko API need to run?

Going by SKILL.md and its folder, Coingecko API needs the command-line tools its instructions call (dotnet).

Does Coingecko API access the network?

SKILL.md names 1 domain. As links in the text: nethereum.com. This is read from the text; nothing was executed.

Is Coingecko API safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Coingecko API use?

Coingecko API is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Coingecko API use?

About 1.2k tokens (SKILL.md is roughly 4.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Coingecko API?

Skills that share tags, products or a category with Coingecko API: Configuring Horizon (coollabsio/coolify, 63k stars), Nestjs Best Practices (rolling-scopes/rsschool-app, 10k stars), Sub2API Admin (Wei-Shaw/sub2api, 43k stars) and Firecrawl Build Onboarding (firecrawl/firecrawl, 190k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Coingecko API?

Nethereum (a GitHub organization) maintains it in Nethereum/Nethereum, which has 2,260 GitHub stars. The repository holds 71 skills in this directory. The repository was last updated on October 5, 2026.

Source: Nethereum/Nethereum on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Coingecko API

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

CoinGecko API

Installation

Quick Start

Available Methods

Asset Platforms

Token Lists

Pricing

Address-to-ID Mapping

Cache Configuration

Key Namespaces

Documentation

Files

Compare with similar skills

Similar skills

More from Nethereum/Nethereum

Related

Questions about Coingecko API