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 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/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<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="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Data Exfiltration · line 15 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 64 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 94 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
- medium Data Exfiltration · line 137 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 5.1 | $0.00038 | $0.01401 |
| Opus 5.5 | $0.00015 | $0.00560 |
| Sonnet 5.5 | $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 1mo 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.
- 1mo 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 (119 stars, last pushed 1mo ago), licensed MIT. It adds 38 tokens to every session and 1,401 once invoked, about $0.0002 per session on Opus 5.5. 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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