Agent skill

Pp Coingecko

by mvanhorn in mvanhorn/printing-press-library

Printing Press CLI for Coingecko. An agent skill from mvanhorn/printing-press-library.

Apache-2.0Auto-check: notesBusiness, Finance & HR

Install Pp Coingecko

skills CLI
$ npx skills add mvanhorn/printing-press-library --skill pp-coingecko -a claude-code

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

GitHub CLI
$ gh skill install mvanhorn/printing-press-library pp-coingecko --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/mvanhorn/printing-press-library.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cli-skills/pp-coingecko .claude/skills/pp-coingecko && 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
pp-coingecko
GitHub stars
2.1k
Token cost
~2k tokens
SKILL.md length
834 words
Files
1
Skills in repo
505
Repo updated
First seen
Licence
Apache-2.0

At a glance

Printing Press CLI for Coingecko. An agent skill from mvanhorn/printing-press-library.

  • Works in 3 steps: Install via the Printing Press… → Verify: coingecko-pp-cli --version → Ensure the reported install directory is…
  • Tasks that involve Crypto and DeFi analysis
  • SKILL.md covers Prerequisites: Install the CLI, When Not to Use This CLI, HTTP Transport and Command Reference, plus 9 more sections
  • Calls go, claude and npx

What it does

Pp Coingecko is an agent skill from mvanhorn/printing-press-library. Printing Press CLI for Coingecko. CoinGecko public API for cryptocurrency data. Free tier, no API key required for basic endpoints.

Its SKILL.md is about 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 Business, Finance & HR, covering Crypto and DeFi analysis. The repository describes itself as: Official library of CLIs generated by the CLI Printing Press. Endorsed, tested, and community-contributed. The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Crypto and DeFi analysis

Example prompts

  • “/pp-coingecko”

Requirements

  • Node.js
  • Pre-approved tools (allowed-tools): Read, Bash

Workflow steps

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

  1. Install via the Printing Press installer. It defaults binaries to $HOME/.local/bin on macOS/Linux and…
  2. Verify: coingecko-pp-cli --version
  3. Ensure the reported install directory is on $PATH for the agent/runtime that will invoke this skill.

What it can do on your machine

Read from SKILL.md and the folder at commit 0fdcc7a. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Bash

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • go
    • claude
    • npx

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

  • Network

    No URLs in SKILL.md. Its commands use npx, which can reach the network depending on how they are called.

    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

Pp Coingecko loads about 2k tokens when it runs. Until then it costs about 36 tokens; SKILL.md has 834 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~36
When it runs · the whole SKILL.md, loaded when a task matches
~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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Bash

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 mvanhorn/printing-press-library at commit 0fdcc7a, republished under its Apache-2.0 licence (© mvanhorn). 834 words, ~2,040 tokens.

Download SKILL.mdSave it as .claude/skills/pp-coingecko/SKILL.md (or your agent's skills folder).
name
pp-coingecko
description
Printing Press CLI for Coingecko. CoinGecko public API for cryptocurrency data. Free tier, no API key required for basic endpoints.
allowed-tools
Read, Bash
author
Hiten Shah
license
Apache-2.0
argument-hint
<command> [args] | install cli|mcp
<!-- GENERATED FILE — DO NOT EDIT.
     This file is a verbatim mirror of library/payments/coingecko/SKILL.md,
     regenerated post-merge by tools/generate-skills/. Hand-edits here are
     silently overwritten on the next regen. Edit the library/ source instead.
     See the repository agent guide, section "Generated artifacts: registry.json, cli-skills/". -->

Coingecko — Printing Press CLI

Prerequisites: Install the CLI

This skill drives the coingecko-pp-cli binary. You must verify the CLI is installed before invoking any command from this skill. If it is missing, install it first:

  1. Install via the Printing Press installer. It defaults binaries to $HOME/.local/bin on macOS/Linux and %LOCALAPPDATA%\Programs\PrintingPress\bin on Windows:
    bash
    npx -y @mvanhorn/printing-press-library install coingecko --cli-only
  2. Verify: coingecko-pp-cli --version
  3. Ensure the reported install directory is on $PATH for the agent/runtime that will invoke this skill.

If the npx install fails (no Node, offline, etc.), fall back to a direct Go install (requires Go 1.26.6 or newer):

bash
go install github.com/mvanhorn/printing-press-library/library/payments/coingecko/cmd/coingecko-pp-cli@latest

If --version reports "command not found" after install, the runtime cannot see the binary directory on $PATH. Do not proceed with skill commands until verification succeeds.

When Not to Use This CLI

Do not activate this CLI for requests that require creating, updating, deleting, publishing, commenting, upvoting, inviting, ordering, sending messages, booking, purchasing, or changing remote state. This printed CLI exposes read-only commands for inspection, export, sync, and analysis.

HTTP Transport

This CLI uses Chrome-compatible HTTP transport for browser-facing endpoints. It does not require a resident browser process for normal API calls.

Command Reference

coins — Manage coins

  • coingecko-pp-cli coins detail — Get current data for a coin
  • coingecko-pp-cli coins list — List all coins with id, symbol, and name
  • coingecko-pp-cli coins markets — List coins with market data

global — Manage global

  • coingecko-pp-cli global global — Get global crypto market data

ping — Manage ping

  • coingecko-pp-cli ping ping — Check API server status

search — Manage search

  • coingecko-pp-cli search search — Search coins, categories, exchanges
  • coingecko-pp-cli coingecko-search-2 — Get trending coins

simple — Manage simple

  • coingecko-pp-cli simple price — Get price of coins
  • coingecko-pp-cli simple supported-vs-currencies — List supported vs currencies
Finding the right command

When you know what you want to do but not which command does it, ask the CLI directly:

bash
coingecko-pp-cli which "<capability in your own words>"

which resolves a natural-language capability query to the best matching command from this CLI's curated feature index. Exit code 0 means at least one match; exit code 2 means no confident match — fall back to --help or use a narrower query.

Auth Setup

No authentication required.

Run coingecko-pp-cli doctor to verify setup.

Agent Mode

Add --agent to any command. Expands to: --json --compact --no-input --no-color --yes.

  • Pipeable — JSON on stdout, errors on stderr

  • Filterable — --select keeps a subset of fields. Dotted paths descend into nested structures; arrays traverse element-wise. Critical for keeping context small on verbose APIs:

    bash
    coingecko-pp-cli coins list --agent --select id,name,status
  • Previewable — --dry-run shows the request without sending

  • Offline-friendly — sync/search commands can use the local SQLite store when available

  • Non-interactive — never prompts, every input is a flag

  • Read-only — do not use this CLI for create, update, delete, publish, comment, upvote, invite, order, send, or other mutating requests

Response envelope

Commands that read from the local store or the API wrap output in a provenance envelope:

json
{
  "meta": {"source": "live" | "local", "synced_at": "...", "reason": "..."},
  "results": <data>
}

Parse .results for data and .meta.source to know whether it's live or local. A human-readable N results (live) summary is printed to stderr only when stdout is a terminal — piped/agent consumers get pure JSON on stdout.

Show full SKILL.md (358 more words)Show less

Agent Feedback

When you (or the agent) notice something off about this CLI, record it:

coingecko-pp-cli feedback "the --since flag is inclusive but docs say exclusive"
coingecko-pp-cli feedback --stdin < notes.txt
coingecko-pp-cli feedback list --json --limit 10

Entries are stored locally at ~/.coingecko-pp-cli/feedback.jsonl. They are never POSTed unless COINGECKO_FEEDBACK_ENDPOINT is set AND either --send is passed or COINGECKO_FEEDBACK_AUTO_SEND=true. Default behavior is local-only.

Write what surprised you, not a bug report. Short, specific, one line: that is the part that compounds.

Output Delivery

Every command accepts --deliver <sink>. The output goes to the named sink in addition to (or instead of) stdout, so agents can route command results without hand-piping. Three sinks are supported:

SinkEffect
stdoutDefault; write to stdout only
file:<path>Atomically write output to <path> (tmp + rename)
webhook:<url>POST the output body to the URL (application/json or application/x-ndjson when --compact)

Unknown schemes are refused with a structured error naming the supported set. Webhook failures return non-zero and log the URL + HTTP status on stderr.

Named Profiles

A profile is a saved set of flag values, reused across invocations. Use it when a scheduled agent calls the same command every run with the same configuration - HeyGen's "Beacon" pattern.

coingecko-pp-cli profile save briefing --json
coingecko-pp-cli --profile briefing coins list
coingecko-pp-cli profile list --json
coingecko-pp-cli profile show briefing
coingecko-pp-cli profile delete briefing --yes

Explicit flags always win over profile values; profile values win over defaults. agent-context lists all available profiles under available_profiles so introspecting agents discover them at runtime.

Exit Codes

CodeMeaning
0Success
2Usage error (wrong arguments)
3Resource not found
5API error (upstream issue)
7Rate limited (wait and retry)
10Config error

Argument Parsing

Parse $ARGUMENTS:

  1. Empty, help, or --help → show coingecko-pp-cli --help output
  2. Starts with install → ends with mcp → MCP installation; otherwise → see Prerequisites above
  3. Anything else → Direct Use (execute as CLI command with --agent)

MCP Server Installation

  1. Install the MCP server:
    bash
    go install github.com/mvanhorn/printing-press-library/library/payments/coingecko/cmd/coingecko-pp-mcp@latest
  2. Register with Claude Code:
    bash
    claude mcp add coingecko-pp-mcp -- coingecko-pp-mcp
  3. Verify: claude mcp list

Direct Use

  1. Check if installed: which coingecko-pp-cli If not found, offer to install (see Prerequisites at the top of this skill).
  2. Match the user query to the best command from the Unique Capabilities and Command Reference above.
  3. Execute with the --agent flag:
    bash
    coingecko-pp-cli <command> [subcommand] [args] --agent
  4. If ambiguous, drill into subcommand help: coingecko-pp-cli <command> --help.

© mvanhorn, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in cli-skills/pp-coingecko of mvanhorn/printing-press-library.

Open the folder on GitHubat commit 0fdcc7a

Compare with similar skills

Pp Coingecko 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.

Pp Coingecko compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Pp Coingecko this skillmvanhorn/printing-press-library2.1k—~2kAutomated safety check: NotesApache-2.0
Technical Analysttradermonty/claude-trading-skills3k5 repos~4.6kAutomated safety check: PassMIT
Polyclawchainstacklabs/polyclaw3601 repos~2kAutomated safety check: PassApache-2.0
Longbridge Researchhelsome/folio2693 repos~2.1kAutomated safety check: PassMIT
Stock Analysis24mlight/StockClaw1012 repos~2kAutomated safety check: NotesMIT
Swapper Depositswapperfinance/swapper-toolkit852—~1.8kAutomated safety check: PassMIT

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Questions about Pp Coingecko

What does Pp Coingecko do?

Printing Press CLI for Coingecko. An agent skill from mvanhorn/printing-press-library. Pp Coingecko is an agent skill from mvanhorn/printing-press-library. Printing Press CLI for Coingecko.

When should I use Pp Coingecko?

Pp Coingecko fits situations like: tasks that involve Crypto and DeFi analysis.

How do I install Pp Coingecko in Claude Code?

Run `npx skills add mvanhorn/printing-press-library --skill pp-coingecko -a claude-code`. Or copy the skill folder (cli-skills/pp-coingecko in mvanhorn/printing-press-library) into .claude/skills/pp-coingecko in your project. Claude Code loads it when a task matches its description.

How do I install Pp Coingecko in Codex?

Run `npx skills add mvanhorn/printing-press-library --skill pp-coingecko -a codex`. Or copy the skill folder (cli-skills/pp-coingecko in mvanhorn/printing-press-library) into .agents/skills/pp-coingecko in your project. Codex loads it when a task matches its description.

Can I use Pp Coingecko 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 mvanhorn/printing-press-library --skill pp-coingecko -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/pp-coingecko, .gemini/skills/pp-coingecko, .github/skills/pp-coingecko and .opencode/skills/pp-coingecko in your project.

What does Pp Coingecko need to run?

Going by SKILL.md and its folder, Pp Coingecko needs the command-line tools its instructions call (go, claude and npx). Our summary lists: Node.js. Its frontmatter pre-approves these tools: Read, Bash.

Does Pp Coingecko access the network?

SKILL.md contains no URLs. Its commands use npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Pp Coingecko safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Pp Coingecko use?

Pp Coingecko is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Pp Coingecko use?

About 2k tokens (SKILL.md is roughly 8.2k 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 Pp Coingecko?

Skills that share tags, products or a category with Pp Coingecko: Technical Analyst (tradermonty/claude-trading-skills, 3k stars), Polyclaw (chainstacklabs/polyclaw, 360 stars), Longbridge Research (helsome/folio, 269 stars) and Stock Analysis (24mlight/StockClaw, 101 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Pp Coingecko?

mvanhorn (a GitHub user) maintains it in mvanhorn/printing-press-library, which has 2,053 GitHub stars. The repository holds 505 skills in this directory. The repository was last updated on October 7, 2026.

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