alchemy-openapi-skill

alchemy-openapi-skill is a skill for Claude Code, Codex from holon-run/uxc. It costs 36 tokens per session (1,032 once invoked), scanned A, original, MIT.

A connection to Alchemy’s Prices API for current and historical cryptocurrency token prices.

In plain words
What is it for?
Use it to look up prices by token symbol or contract address and retrieve historical token prices.
Why use it?
It provides a defined price-lookup service without requiring access to Alchemy’s unrelated blockchain, NFT, portfolio, or write APIs.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/holon-run/uxc/alchemy-openapi-skill
Any agent
npx skills add holon-run/uxc --skill alchemy-openapi-skill
Clone the repo
git clone --depth 1 https://github.com/holon-run/uxc

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for alchemy-openapi-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/holon-run/uxc/alchemy-openapi-skill.svg)](https://agentmods.dev/skills/holon-run/uxc/alchemy-openapi-skill)
Your own site
<a href="https://agentmods.dev/skills/holon-run/uxc/alchemy-openapi-skill"><img src="https://agentmods.dev/badge/skills/holon-run/uxc/alchemy-openapi-skill.svg" alt="Measured on agentmods" height="20"></a>
Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,032 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00036 $0.01032
Opus 5 $0.00018 $0.00516
Sonnet 5 $0.00007 $0.00206
Haiku 4.5 $0.00004 $0.00103

Measured 5d ago against content hash 222478e6ee41, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

alchemy-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 5d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/validate.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/alchemy-openapi-skill/SKILL.md · 105 lines

How it starts

The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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
  2. 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
  3. 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"}'

Read the full file on GitHub · 105 lines

Files

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.

Changes

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.

  1. 5d ago First seen · 105 lines · 36 tokens per session scan A 222478e6ee41

Subscribe to this mod's changes

alchemy-openapi-skill is a skill published in the GitHub repository holon-run/uxc (113 stars, last pushed 27d ago), licensed MIT. It adds 36 tokens to every session and 1,032 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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