holon-run/uxc/alchemy-openapi-skill

Alchemy Prices API Skill

Use this skill to run Alchemy Prices API 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.g.alchemy.com.
• Access to the curated OpenAPI schema URL:
• https://raw.githubusercontent.com/holon-run/uxc/main/skills/alchemy-openapi-skill/references/alchemy-prices.openapi.json
• An Alchemy API key.

Scope

This v1 skill intentionally covers the narrow Prices API surface:

• token price lookup by symbol
• token price lookup by contract address
• historical token prices

This skill does not cover:

• node JSON-RPC
• NFT or portfolio APIs
• write operations
• the broader Alchemy API surface
• multi-symbol batch lookup in one uxc call

Authentication

Alchemy Prices API places the API key in the request path: /prices/v1/{apiKey}/....

Configure one API-key credential with a request path prefix template:

uxc auth credential set alchemy-prices \
  --auth-type api_key \
  --secret-env ALCHEMY_API_KEY \
  --path-prefix-template "/prices/v1/{{secret}}"
 
uxc auth binding add \
  --id alchemy-prices \
  --host api.g.alchemy.com \
  --scheme https \
  --credential alchemy-prices \
  --priority 100

Validate the active mapping when auth looks wrong:

uxc auth binding match https://api.g.alchemy.com

Core Workflow

1. Use the fixed link command by default:

• command -v alchemy-openapi-cli
• If missing, create it:

uxc link alchemy-openapi-cli https://api.g.alchemy.com --schema-url https://raw.githubusercontent.com/holon-run/uxc/main/skills/alchemy-openapi-skill/references/alchemy-prices.openapi.json

• alchemy-openapi-cli -h

1. Inspect operation schema first:

• alchemy-openapi-cli get:/tokens/by-symbol -h
• alchemy-openapi-cli post:/tokens/by-address -h
• alchemy-openapi-cli post:/tokens/historical -h

1. Start with narrow single-asset reads before batch historical requests:

• alchemy-openapi-cli get:/tokens/by-symbol symbols=ETH currency=USD
• alchemy-openapi-cli post:/tokens/by-address '{"addresses":[{"network":"eth-mainnet","address":"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48"}],"currency":"USD"}'

1. Use positional JSON only for the POST endpoints:

• alchemy-openapi-cli post:/tokens/historical '{"symbol":"ETH","startTime":"2025-01-01T00:00:00Z","endTime":"2025-01-07T00:00:00Z","interval":"1d","currency":"USD"}'

Operations

• get:/tokens/by-symbol
• post:/tokens/by-address
• post:/tokens/historical

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 and prices-only. Do not imply RPC, trade execution, or wallet mutation support.
• API keys are sensitive because they appear in the request path. Use --secret-env or --secret-op, not shell history literals, when possible.
• /tokens/by-symbol is query-based in the live API.
• The live API supports repeated symbols= parameters, but this v1 skill intentionally narrows that endpoint to a single symbols=<TOKEN> query because current uxc query argument handling does not reliably execute array-shaped query parameters.
• Historical requests can expand quickly. Keep time windows tight unless the user explicitly wants a larger backfill.
• alchemy-openapi-cli <operation> ... is equivalent to uxc https://api.g.alchemy.com --schema-url <alchemy_openapi_schema> <operation> ....

References

• Usage patterns: references/usage-patterns.md
• Curated OpenAPI schema: references/alchemy-prices.openapi.json
• Alchemy Prices API docs: https://www.alchemy.com/docs/reference/prices-api
• Prices API endpoints: https://www.alchemy.com/docs/reference/prices-api-endpoints