Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/holon-run/uxc/coingecko-openapi-skillnpx skills add holon-run/uxc --skill coingecko-openapi-skillgit clone --depth 1 https://github.com/holon-run/uxcWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/holon-run/uxc/coingecko-openapi-skill)<a href="https://agentmods.dev/skills/holon-run/uxc/coingecko-openapi-skill"><img src="https://agentmods.dev/badge/skills/holon-run/uxc/coingecko-openapi-skill.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00038 | $0.01401 |
| Opus 5 | $0.00019 | $0.00700 |
| Sonnet 5 | $0.00008 | $0.00280 |
| Haiku 4.5 | $0.00004 | $0.00140 |
Grade A, and why
coingecko-openapi-skill scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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
uxcis installed and available inPATH.- 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:
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:
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:
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
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 5d ago First seen · 145 lines · 38 tokens per session scan A a19b7cb80d42
coingecko-openapi-skill is a skill published in the GitHub repository holon-run/uxc (113 stars, last pushed 27d ago), licensed MIT. It adds 38 tokens to every session and 1,401 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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