Agent skill

Coingecko Openapi Skill

by holon-run in holon-run/uxc

Operate CoinGecko and GeckoTerminal market data APIs through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

MITAuto-check passedBackend & APIs

Install Coingecko Openapi Skill

skills CLI
$ npx skills add holon-run/uxc --skill coingecko-openapi-skill -a claude-code

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

GitHub CLI
$ gh skill install holon-run/uxc coingecko-openapi-skill --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/holon-run/uxc.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/coingecko-openapi-skill .claude/skills/coingecko-openapi-skill && 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/

Facts

Skill name
coingecko-openapi-skill
GitHub stars
116
Used in
1 other repo
Token cost
~1.3k tokens
SKILL.md length
418 words
Files
5 (incl. scripts, references)
Skills in repo
62
Repo updated
First seen
Licence
MIT

At a glance

Operate CoinGecko and GeckoTerminal market data APIs through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

  • Works in 4 steps: Use the fixed link command by default → Inspect operation schema first → Prefer narrow read validation before… → …
  • Tasks that involve OpenAPI specifications
  • SKILL.md covers Prerequisites, Scope, Authentication and Core Workflow, plus 3 more sections
  • Runs Shell scripts from its folder; reaches api.coingecko.com and pro-api.coingecko.com; needs COINGECKO_DEMO_API_KEY and COINGECKO_PRO_API_KEY

What it does

Coingecko Openapi Skill is an agent skill from holon-run/uxc. Operate CoinGecko and GeckoTerminal market data APIs through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 7 other files, including scripts and reference files (for example `agents/openai.yaml`, `references/coingecko-market.openapi.json` and `references/usage-patterns.md`).

It sits in Backend & APIs, covering OpenAPI specifications and Stock and market analysis. It works with OpenAPI. The repository describes itself as: A unified CLI for discovering and invoking tools across OpenAPI, MCP, GraphQL, gRPC, and JSON-RPC. The licence is MIT.

When your agent uses it

  • Tasks that involve OpenAPI specifications
  • Tasks that involve Stock and market analysis

Example prompts

  • “/coingecko-openapi-skill”

Requirements

  • A Bash shell
  • A credential in COINGECKO_DEMO_API_KEY
  • A credential in COINGECKO_PRO_API_KEY

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Use the fixed link command by default
  2. Inspect operation schema first
  3. Prefer narrow read validation before broader reads
  4. Execute with key/value parameters

What it can do on your machine

Read from SKILL.md and the folder at commit 562d47c. 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

    Ships 1 file in scripts/ (Shell), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • api.coingecko.com
    • pro-api.coingecko.com

    Also links to:

    • docs.coingecko.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • COINGECKO_DEMO_API_KEY
    • COINGECKO_PRO_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Coingecko Openapi Skill loads about 1.3k tokens when it runs, and up to ~4.2k if it reads all its reference files. Until then it costs about 40 tokens; SKILL.md has 418 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~40
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4.2k

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); the scripts in this folder are not scanned.

SKILL.md

The full file from holon-run/uxc at commit 562d47c, republished under its MIT licence (© holon-run). 418 words, ~1,341 tokens.

Download SKILL.mdSave it as .claude/skills/coingecko-openapi-skill/SKILL.md (or your agent's skills folder). This skill also uses 4 other files; get the full folder from GitHub.
name
coingecko-openapi-skill
description
Operate CoinGecko and GeckoTerminal market data APIs through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

CoinGecko And GeckoTerminal Skill

Use this skill to run CoinGecko market data and GeckoTerminal onchain DEX operations through uxc + OpenAPI.

Reuse the uxc skill for shared execution, auth, and error-handling guidance.

Prerequisites

  • uxc is installed and available in PATH.
  • Network access to https://api.coingecko.com/api/v3.
  • Access to the curated OpenAPI schema URL:
    • https://raw.githubusercontent.com/holon-run/uxc/main/skills/coingecko-openapi-skill/references/coingecko-market.openapi.json
  • A CoinGecko Demo API key.

Scope

This skill covers a read-first market data surface:

  • API liveness checks
  • spot price lookup
  • asset ID discovery
  • market screener reads
  • trending reads
  • GeckoTerminal network discovery
  • onchain token price lookup
  • trending pool reads

This skill does not cover:

  • paid or enterprise-only method families beyond the selected v1 scope
  • historical chart or OHLC families
  • portfolio, NFT, or onchain trade execution
  • the full CoinGecko or GeckoTerminal API

Authentication

The default host uses CoinGecko Demo auth with x-cg-demo-api-key.

Configure one API-key credential and bind it to api.coingecko.com/api/v3:

bash
uxc auth credential set coingecko-demo \
  --auth-type api_key \
  --api-key-header x-cg-demo-api-key \
  --secret-env COINGECKO_DEMO_API_KEY

uxc auth binding add \
  --id coingecko-demo \
  --host api.coingecko.com \
  --path-prefix /api/v3 \
  --scheme https \
  --credential coingecko-demo \
  --priority 100

Validate the active mapping when auth looks wrong:

bash
uxc auth binding match https://api.coingecko.com/api/v3
Pro Host Override

If you have a Pro plan, keep the same curated schema and create a separate credential, binding, and link:

bash
uxc auth credential set coingecko-pro \
  --auth-type api_key \
  --api-key-header x-cg-pro-api-key \
  --secret-env COINGECKO_PRO_API_KEY

uxc auth binding add \
  --id coingecko-pro \
  --host pro-api.coingecko.com \
  --path-prefix /api/v3 \
  --scheme https \
  --credential coingecko-pro \
  --priority 100

uxc link coingecko-pro-openapi-cli https://pro-api.coingecko.com/api/v3 \
  --schema-url https://raw.githubusercontent.com/holon-run/uxc/main/skills/coingecko-openapi-skill/references/coingecko-market.openapi.json

Core Workflow

  1. Use the fixed link command by default:

    • command -v coingecko-openapi-cli
    • If missing, create it: uxc link coingecko-openapi-cli https://api.coingecko.com/api/v3 --schema-url https://raw.githubusercontent.com/holon-run/uxc/main/skills/coingecko-openapi-skill/references/coingecko-market.openapi.json
    • coingecko-openapi-cli -h
  2. Inspect operation schema first:

    • coingecko-openapi-cli get:/simple/price -h
    • coingecko-openapi-cli get:/coins/markets -h
    • coingecko-openapi-cli get:/onchain/simple/networks/{network}/token_price/{addresses} -h
  3. Prefer narrow read validation before broader reads:

    • coingecko-openapi-cli get:/ping
    • coingecko-openapi-cli get:/coins/list include_platform=false
    • coingecko-openapi-cli get:/onchain/networks
  4. Execute with key/value parameters:

    • coingecko-openapi-cli get:/simple/price ids=bitcoin,ethereum vs_currencies=usd
    • coingecko-openapi-cli get:/coins/markets vs_currency=usd ids=bitcoin,ethereum order=market_cap_desc per_page=10 page=1
    • coingecko-openapi-cli get:/onchain/simple/networks/{network}/token_price/{addresses} network=eth addresses=0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48

Operation Groups

Market Data
  • get:/ping
  • get:/simple/price
  • get:/coins/list
  • get:/coins/markets
  • get:/search/trending
Show full SKILL.md (165 more words)Show less
GeckoTerminal Onchain Data
  • get:/onchain/networks
  • get:/onchain/simple/networks/{network}/token_price/{addresses}
  • get:/onchain/networks/trending_pools

Guardrails

  • Keep automation on the JSON output envelope; do not use --text.
  • Parse stable fields first: ok, kind, protocol, data, error.
  • Treat this v1 skill as read-only. Do not imply wallet, trading, or portfolio mutation support.
  • Demo and Pro hosts use different API-key headers. If the default Demo credential fails against the Pro host, create a separate Pro credential rather than reusing the Demo header name.
  • The Pro host needs its own auth binding on pro-api.coingecko.com/api/v3; creating only a credential is not enough for linked calls to send x-cg-pro-api-key.
  • CoinGecko public and Demo limits are tighter than Pro. Keep default examples narrow and avoid large paginated loops without explicit user intent.
  • The GeckoTerminal endpoints in this schema share the same API root and auth flow as the rest of the curated CoinGecko host contract.
  • coingecko-openapi-cli <operation> ... is equivalent to uxc https://api.coingecko.com/api/v3 --schema-url <coingecko_openapi_schema> <operation> ....

References

© holon-run, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 4 other files (scripts, references) in skills/coingecko-openapi-skill of holon-run/uxc.

  • SKILL.md
  • agents/openai.yaml
  • references/coingecko-market.openapi.json
  • references/usage-patterns.md
  • scripts/validate.sh

Open the folder on GitHubat commit 562d47c

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in holon-run/uxc, which our catalogue first saw on October 7, 2026.

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Works with

Categories

Questions about Coingecko Openapi Skill

What does Coingecko Openapi Skill do?

Operate CoinGecko and GeckoTerminal market data APIs through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails. Coingecko Openapi Skill is an agent skill from holon-run/uxc. Operate CoinGecko and GeckoTerminal market data APIs through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.

When should I use Coingecko Openapi Skill?

Coingecko Openapi Skill fits situations like: tasks that involve OpenAPI specifications; tasks that involve Stock and market analysis.

How do I install Coingecko Openapi Skill in Claude Code?

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

How do I install Coingecko Openapi Skill in Codex?

Run `npx skills add holon-run/uxc --skill coingecko-openapi-skill -a codex`. Or copy the skill folder (skills/coingecko-openapi-skill in holon-run/uxc) into .agents/skills/coingecko-openapi-skill in your project. Codex loads it when a task matches its description.

Can I use Coingecko Openapi Skill 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 holon-run/uxc --skill coingecko-openapi-skill -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-openapi-skill, .gemini/skills/coingecko-openapi-skill, .github/skills/coingecko-openapi-skill and .opencode/skills/coingecko-openapi-skill in your project.

What does Coingecko Openapi Skill need to run?

Going by SKILL.md and its folder, Coingecko Openapi Skill needs a shell for the scripts in its folder and credentials named COINGECKO_DEMO_API_KEY and COINGECKO_PRO_API_KEY. Our summary lists: A Bash shell; A credential in COINGECKO_DEMO_API_KEY; A credential in COINGECKO_PRO_API_KEY.

Does Coingecko Openapi Skill access the network?

SKILL.md names 3 domains. In commands or code: api.coingecko.com and pro-api.coingecko.com; the agent is likely to contact these when it follows the instructions. As links in the text: docs.coingecko.com. This is read from the text; nothing was executed.

Is Coingecko Openapi Skill 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Coingecko Openapi Skill use?

Coingecko Openapi Skill 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 Openapi Skill use?

About 1.3k tokens (SKILL.md is roughly 5.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.8k tokens, read only when the agent opens those files.

What are the alternatives to Coingecko Openapi Skill?

Skills that share tags, products or a category with Coingecko Openapi Skill: ToolJet Marketplace Plugin Builder (ToolJet/ToolJet, 41k stars), Step Parts (earthtojake/text-to-cad, 18k stars), API Designer (Jeffallan/claude-skills, 12k stars) and OpenAPI to MCP Server (mcp-use/mcp-use, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Coingecko Openapi Skill?

holon-run (a GitHub organization) maintains it in holon-run/uxc, which has 116 GitHub stars. The repository holds 62 skills in this directory. The repository was last updated on September 15, 2026.

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