/kraken-openapi-skill

name: kraken-openapi-skill
description: Operate Kraken public market APIs through UXC with a curated OpenAPI schema, market-first discovery, and explicit private-auth boundary notes.

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

• `uxc` is installed and available in `PATH`.
• 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

1. 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`

2. Inspect operation help before execution:

• `kraken-openapi-cli get:/0/public/Time -h`
• `kraken-openapi-cli get:/0/public/Ticker -h`

3. Prefer narrow pair reads first:

• `kraken-openapi-cli get:/0/public/Ticker pair=XBTUSD`
• `kraken-openapi-cli get:/0/public/Depth pair=XBTUSD count=20`

Operations

• `get:/0/public/Time`
• `get:/0/public/AssetPairs`
• `get:/0/public/Ticker`
• `get:/0/public/OHLC`
• `get:/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 `AssetPairs` before assuming symbol strings.
• `kraken-openapi-cli <operation> ...` is equivalent to `uxc https://api.kraken.com --schema-url <kraken_public_openapi_schema> <operation> ...`.

References

• Usage patterns: `references/usage-patterns.md`
• Curated OpenAPI schema: `references/kraken-public.openapi.json`
• Official Kraken API intro: https://docs.kraken.com/api/docs/guides/global-intro