crypto-price-data-guide

crypto-price-data-guide is a skill for Claude Code, Codex from nirholas/three.ws. It costs 70 tokens per session (2,979 once invoked), scanned A, original, Apache-2.0.

A guide to where cryptocurrency prices come from, including exchange order books, decentralised exchange pools, blockchain price oracles, and data aggregators.

In plain words
What is it for?
It is for explaining price data pipelines, comparing free APIs, and calculating volume-weighted or time-weighted prices.
Why use it?
It helps developers understand why price sources differ and how to build or choose a price feed without relying on one paid service.

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/nirholas/three.ws/crypto-price-data-guide
Any agent
npx skills add nirholas/three.ws --skill crypto-price-data-guide
Clone the repo
git clone --depth 1 https://github.com/nirholas/three.ws

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 crypto-price-data-guide

README.md
[![agentmods](https://agentmods.dev/badge/skills/nirholas/three.ws/crypto-price-data-guide.svg)](https://agentmods.dev/skills/nirholas/three.ws/crypto-price-data-guide)
Your own site
<a href="https://agentmods.dev/skills/nirholas/three.ws/crypto-price-data-guide"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/crypto-price-data-guide.svg" alt="Measured on agentmods" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,979 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 $0.00070 $0.02979
Opus 5 $0.00035 $0.01489
Sonnet 5 $0.00014 $0.00596
Haiku 4.5 $0.00007 $0.00298

Measured 4d ago against content hash bf4159f19cb8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

crypto-price-data-guide 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 4d 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.

data/skills/analysis/crypto-price-data-guide/SKILL.md · 311 lines

How it starts

The opening of the file, as written. The whole thing — 311 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Crypto Price Data Guide

Where do crypto prices actually come from? This guide breaks down the entire data pipeline — from raw exchange data to the numbers you see in apps.

The Price Data Pipeline

┌──────────────────────────────────────────────────────────┐
│  LAYER 1: Primary Sources (where prices originate)       │
│                                                          │
│  CEX Order Books          DEX AMM Pools                  │
│  ┌──────────────┐        ┌──────────────┐                │
│  │ Binance      │        │ Uniswap V3   │                │
│  │ Coinbase     │        │ Curve        │                │
│  │ Kraken       │        │ Camelot      │                │
│  │ OKX, Bybit   │        │ Balancer     │                │
│  └──────┬───────┘        └──────┬───────┘                │
│         │                       │                        │
├─────────┼───────────────────────┼────────────────────────┤
│  LAYER 2: Oracle Networks (aggregate + post on-chain)    │
│         │                       │                        │
│         ▼                       ▼                        │
│  ┌──────────────────────────────────────┐                │
│  │ Chainlink     Pyth     Redstone      │                │
│  │ (median of multiple data sources)    │                │
│  └──────────────────┬───────────────────┘                │
│                     │                                    │
├─────────────────────┼────────────────────────────────────┤
│  LAYER 3: Aggregators (combine everything)               │
│                     ▼                                    │
│  ┌──────────────────────────────────────┐                │
│  │ CoinGecko  DeFi Llama  CoinMarketCap │                │
│  │ DexScreener  CoinCap   CoinPaprika   │                │
│  └──────────────────┬───────────────────┘                │
│                     │                                    │
├─────────────────────┼────────────────────────────────────┤
│  LAYER 4: Consumer Apps                                  │
│                     ▼                                    │
│  Portfolio trackers, trading bots, DeFi protocols,       │
│  AI agents (like SperaxOS), wallets                      │
└──────────────────────────────────────────────────────────┘

Read the full file on GitHub · 311 lines

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. 4d ago First seen · 311 lines · 70 tokens per session scan A bf4159f19cb8

Subscribe to this mod's changes

crypto-price-data-guide is a skill published in the GitHub repository nirholas/three.ws (110 stars, last pushed today), licensed Apache-2.0. It adds 70 tokens to every session and 2,979 once invoked, about $0.0003 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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