CoinAPI REST Skill

Use this skill to run CoinAPI REST 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://rest.coinapi.io.
• Access to the curated OpenAPI schema URL:
• https://raw.githubusercontent.com/holon-run/uxc/main/skills/coinapi-openapi-skill/references/coinapi-market.openapi.json
• A CoinAPI key.

Scope

This skill covers a read-first market data surface:

• current exchange rates
• current quote snapshots
• latest OHLCV candles
• latest trades
• latest order books

This skill does not cover:

• FIX, WebSocket, or MCP transport surfaces
• write operations
• the broader CoinAPI catalog

Authentication

CoinAPI uses X-CoinAPI-Key header auth.

Configure one API-key credential and bind it to rest.coinapi.io:

uxc auth credential set coinapi \
  --auth-type api_key \
  --api-key-header X-CoinAPI-Key \
  --secret-env COINAPI_KEY

uxc auth binding add \
  --id coinapi \
  --host rest.coinapi.io \
  --scheme https \
  --credential coinapi \
  --priority 100

Validate the active mapping when auth looks wrong:

uxc auth binding match https://rest.coinapi.io

Core Workflow

1. Use the fixed link command by default:
• command -v coinapi-openapi-cli
• If missing, create it:

uxc link coinapi-openapi-cli https://rest.coinapi.io --schema-url https://raw.githubusercontent.com/holon-run/uxc/main/skills/coinapi-openapi-skill/references/coinapi-market.openapi.json

• coinapi-openapi-cli -h

1. Inspect operation schema first:
• coinapi-openapi-cli get:/v1/exchangerate/{asset_id_base}/{asset_id_quote} -h
• coinapi-openapi-cli get:/v1/ohlcv/{symbol_id}/latest -h
• coinapi-openapi-cli get:/v1/trades/{symbol_id}/latest -h

1. Prefer narrow spot and latest reads before broader crawls:
• coinapi-openapi-cli get:/v1/exchangerate/{asset_id_base}/{asset_id_quote} asset_id_base=BTC asset_id_quote=USD
• coinapi-openapi-cli get:/v1/quotes/current filter_symbol_id=BINANCE_SPOT_BTC_USDT

1. Execute with key/value parameters:
• coinapi-openapi-cli get:/v1/ohlcv/{symbol_id}/latest symbol_id=BINANCE_SPOT_BTC_USDT period_id=1DAY limit=10
• coinapi-openapi-cli get:/v1/orderbooks/{symbol_id}/latest symbol_id=BINANCE_SPOT_BTC_USDT limit_levels=20

Operations

• get:/v1/exchangerate/{asset_id_base}/{asset_id_quote}
• get:/v1/quotes/current
• get:/v1/ohlcv/{symbol_id}/latest
• get:/v1/trades/{symbol_id}/latest
• get:/v1/orderbooks/{symbol_id}/latest

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. Do not imply order entry or market connectivity support.
• Keep filter_symbol_id, period_id, limit, and limit_levels narrow unless the user explicitly wants larger pulls.
• coinapi-openapi-cli ... is equivalent to uxc https://rest.coinapi.io --schema-url ....

References

• Usage patterns: references/usage-patterns.md
• Curated OpenAPI schema: references/coinapi-market.openapi.json
• CoinAPI REST docs: https://docs.coinapi.io/market-data/rest-api