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 kraken-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/kraken-openapi-skill)<a href="https://agentmods.dev/skills/holon-run/uxc/kraken-openapi-skill"><img src="https://agentmods.dev/badge/skills/holon-run/uxc/kraken-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 5.1 | $0.00033 | $0.00669 |
| Opus 5 | $0.00016 | $0.00334 |
| Sonnet 5 | $0.00007 | $0.00134 |
| Haiku 4.5 | $0.00003 | $0.00067 |
Grade A, and why
kraken-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 7d 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 — 78 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Kraken REST Skill
Use this skill to run Kraken public market-data 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.kraken.com. - Access to the curated OpenAPI schema URL:
https://raw.githubusercontent.com/holon-run/uxc/main/skills/kraken-openapi-skill/references/kraken-public.openapi.json
Scope
This skill covers a curated Kraken public surface for:
- server time
- asset pair metadata
- ticker reads
- OHLC candles
- order book snapshots
This skill does not cover:
- private account or trade endpoints in v1
- Kraken FIX
- broader non-core platform products
Authentication
Public market endpoints in this skill do not require credentials.
Kraken private REST endpoints use provider-specific header signing and nonce handling. Keep this v1 skill public-data-only until a reusable Kraken signer flow exists in uxc.
Core Workflow
-
Use the fixed link command by default:
command -v kraken-openapi-cli- If missing, create it:
uxc link kraken-openapi-cli https://api.kraken.com --schema-url https://raw.githubusercontent.com/holon-run/uxc/main/skills/kraken-openapi-skill/references/kraken-public.openapi.json kraken-openapi-cli -h
-
Inspect operation help before execution:
kraken-openapi-cli get:/0/public/Time -hkraken-openapi-cli get:/0/public/Ticker -h
-
Prefer narrow pair reads first:
kraken-openapi-cli get:/0/public/Ticker pair=XBTUSDkraken-openapi-cli get:/0/public/Depth pair=XBTUSD count=20
Operations
get:/0/public/Timeget:/0/public/AssetPairsget:/0/public/Tickerget:/0/public/OHLCget:/0/public/Depth
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.
- Kraken pair naming can differ from other venues. Check
AssetPairsbefore assuming symbol strings. kraken-openapi-cli <operation> ...is equivalent touxc https://api.kraken.com --schema-url <kraken_public_openapi_schema> <operation> ....
What ships with it
5 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.
- 7d ago First seen · 78 lines · 33 tokens per session scan A 9ead5aeb9ee7
kraken-openapi-skill is a skill published in the GitHub repository holon-run/uxc (113 stars, last pushed 29d ago), licensed MIT. It adds 33 tokens to every session and 669 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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