Surf
BlockRunAI/ClawRouter
Use this skill — NOT browser or webfetch — for ALL Surf crypto-data calls.
Analyze digital assets including cryptocurrency fundamentals, blockchain mechanics, DeFi protocols, and on-chain metrics.
Install Digital Assets
$ npx skills add JoelLewis/finance_skills --skill digital-assets -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install JoelLewis/finance_skills digital-assets --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/JoelLewis/finance_skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/wealth-management/skills/digital-assets .claude/skills/digital-assets && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "digital-assets" agent skill from https://github.com/JoelLewis/finance_skills/tree/main/plugins/wealth-management/skills/digital-assets into .claude/skills/digital-assets/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "digital-assets", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/JoelLewis/finance_skills/tree/main/plugins/wealth-management/skills/digital-assetsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add JoelLewis/finance_skills --skill digital-assets -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install JoelLewis/finance_skills digital-assets --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JoelLewis/finance_skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/wealth-management/skills/digital-assets .agents/skills/digital-assets && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "digital-assets" agent skill from https://github.com/JoelLewis/finance_skills/tree/main/plugins/wealth-management/skills/digital-assets into .agents/skills/digital-assets/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "digital-assets", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add JoelLewis/finance_skills --skill digital-assets -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install JoelLewis/finance_skills digital-assets --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JoelLewis/finance_skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/wealth-management/skills/digital-assets .cursor/skills/digital-assets && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "digital-assets" agent skill from https://github.com/JoelLewis/finance_skills/tree/main/plugins/wealth-management/skills/digital-assets into .cursor/skills/digital-assets/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "digital-assets", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/JoelLewis/finance_skills.git --path plugins/wealth-management/skills/digital-assets--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add JoelLewis/finance_skills --skill digital-assets -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install JoelLewis/finance_skills digital-assets --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JoelLewis/finance_skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/wealth-management/skills/digital-assets .gemini/skills/digital-assets && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "digital-assets" agent skill from https://github.com/JoelLewis/finance_skills/tree/main/plugins/wealth-management/skills/digital-assets into .gemini/skills/digital-assets/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "digital-assets", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install JoelLewis/finance_skills digital-assetsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add JoelLewis/finance_skills --skill digital-assets -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/JoelLewis/finance_skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/wealth-management/skills/digital-assets .github/skills/digital-assets && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "digital-assets" agent skill from https://github.com/JoelLewis/finance_skills/tree/main/plugins/wealth-management/skills/digital-assets into .github/skills/digital-assets/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "digital-assets", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add JoelLewis/finance_skills --skill digital-assets -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install JoelLewis/finance_skills digital-assets --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JoelLewis/finance_skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/wealth-management/skills/digital-assets .opencode/skills/digital-assets && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "digital-assets" agent skill from https://github.com/JoelLewis/finance_skills/tree/main/plugins/wealth-management/skills/digital-assets into .opencode/skills/digital-assets/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "digital-assets", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
digital-assets- GitHub stars
- 206
- Token cost
- ~2.2k tokens
- SKILL.md length
- 1,110 words
- Files
- 1
- Skills in repo
- 91
- Repo updated
- First seen
- Licence
- MIT
At a glance
Analyze digital assets including cryptocurrency fundamentals, blockchain mechanics, DeFi protocols, and on-chain metrics.
- The user asks about crypto investing
- SKILL.md covers Core Concepts, Key Formulas, Worked Examples and Common Pitfalls, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Impermanent loss
What it does
Digital Assets is an agent skill from JoelLewis/finance_skills. Analyze digital assets including cryptocurrency fundamentals, blockchain mechanics, DeFi protocols, and on-chain metrics. Use when the user asks about crypto investing, Bitcoin, Ethereum, staking yields, DeFi lending, impermanent loss, or on-chain valuation metrics. Also trigger when users mention 'blockchain', 'proof of stake', 'proof of work', 'smart contracts', 'NFTs', 'stablecoins', 'NVT ratio', 'TVL', 'crypto portfolio allocation', 'halving', or ask about risks and returns of cryptocurrency.
Its SKILL.md is about 2.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Business, Finance & HR, covering Crypto and DeFi analysis and Smart contracts. It works with Ethereum and Bitcoin. The repository describes itself as: Claude Code skill plugins for financial services — 81 skills across 7 domain plugins covering investment management, compliance, advisory practice, trading, and operations. The licence is MIT.
When your agent uses it
- The user asks about crypto investing
- Impermanent loss
- On-chain valuation metrics
- Users mention blockchain
Example prompts
- “blockchain”
- “proof of stake”
- “proof of work”
- “/digital-assets”
What it can do on your machine
Read from SKILL.md and the folder at commit 5c498ea. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Digital Assets loads about 2.2k tokens when it runs. Until then it costs about 129 tokens; SKILL.md has 1,110 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from JoelLewis/finance_skills at commit 5c498ea, republished under its MIT licence (© JoelLewis). 1,110 words, ~2,174 tokens.
Download SKILL.mdSave it as
.claude/skills/digital-assets/SKILL.md (or your agent's skills folder).- name
- digital-assets
- description
- Analyze digital assets including cryptocurrency fundamentals, blockchain mechanics, DeFi protocols, and on-chain metrics. Use when the user asks about crypto investing, Bitcoin, Ethereum, staking yields, DeFi lending, impermanent loss, or on-chain valuation metrics. Also trigger when users mention 'blockchain', 'proof of stake', 'proof of work', 'smart contracts', 'NFTs', 'stablecoins', 'NVT ratio', 'TVL', 'crypto portfolio allocation', 'halving', or ask about risks and returns of cryptocurrency.
Digital Assets
Core Concepts
Blockchain Fundamentals
A distributed ledger maintained by a network of nodes. Transactions are grouped into blocks, cryptographically linked in sequence. Immutability comes from the chain structure — altering any block requires recomputing all subsequent blocks. Consensus mechanisms determine how the network agrees on the valid state of the ledger.
Consensus Mechanisms
Proof of Work (PoW): Miners compete to solve computational puzzles. The winner adds the next block and earns a reward. High energy consumption but battle-tested security (Bitcoin). Security scales with hash rate.
Proof of Stake (PoS): Validators lock up tokens as collateral ("stake"). Block proposers are selected based on stake weight. Slashing penalizes malicious behavior. Far more energy-efficient than PoW. Ethereum transitioned to PoS in September 2022.
Bitcoin
Fixed supply of 21 million coins, enforced by protocol rules. Block reward halves approximately every 4 years (halving cycle), reducing new supply issuance. The block reward is 3.125 BTC following the April 2024 halving (next halving expected ~2028, dropping to 1.5625 BTC). Mining reward = block reward + transaction fees. Scarcity narrative drives the "digital gold" thesis.
Ethereum
The leading smart contract platform. The Ethereum Virtual Machine (EVM) executes arbitrary programs (smart contracts). Gas fees compensate validators for computation. EIP-1559 introduced a base fee that is burned (destroyed), making ETH potentially deflationary when network usage is high. The merge to PoS (Sept 2022) reduced energy usage by ~99.95%.
Staking Yield
For Proof of Stake networks:
Staking Yield = (Rewards + MEV Tips - Validator Costs) / Staked Amount
Rewards come from new token issuance and transaction fees. MEV (Maximal Extractable Value) provides additional income from transaction ordering. Validator costs include hardware, bandwidth, and the risk of slashing. Real yield (after accounting for inflation of token supply) can be significantly lower than nominal yield.
DeFi (Decentralized Finance)
- Lending protocols (Aave, Compound): Users deposit assets to earn interest; borrowers post collateral to borrow. Interest rates are algorithmically determined by supply/demand (utilization rate).
- DEXs (Uniswap, Curve): Decentralized exchanges using automated market makers instead of order books. Liquidity providers deposit token pairs and earn trading fees.
- Yield farming: Deploying capital across DeFi protocols to maximize yield, often involving multiple protocol interactions and leverage.
Automated Market Maker (AMM)
The constant product formula: x * y = k
where x and y are the reserves of two tokens in a liquidity pool. Price is determined by the ratio of reserves. Large trades cause slippage (price impact proportional to trade size relative to pool depth).
Impermanent Loss
The loss that liquidity providers experience relative to simply holding the tokens when prices change:
IL = 2 * sqrt(p_ratio) / (1 + p_ratio) - 1
where p_ratio = new_price / old_price for one token relative to the other. At a 2x price change, IL is approximately 5.7%. At a 5x change, IL is approximately 25.5%. "Impermanent" because the loss reverses if prices return to original levels — but it becomes permanent if the LP withdraws at diverged prices.
On-Chain Metrics
- NVT Ratio (Network Value to Transactions): Market cap / daily transaction volume (on-chain). Analogous to P/E for equities. Higher NVT suggests overvaluation relative to network usage.
- Active addresses: Number of unique addresses transacting daily. Proxy for network adoption.
- Hash rate (PoW): Total computational power securing the network. Higher hash rate = more security.
- TVL (Total Value Locked): Total value of assets deposited in DeFi protocols. Measure of DeFi ecosystem size.
Stablecoin Types
- Fiat-backed (USDC, USDT): Each token backed by reserves of fiat currency or equivalents. Centralized issuance and custody.
- Crypto-backed (DAI): Overcollateralized with cryptocurrency. Decentralized but capital-inefficient.
- Algorithmic: Maintain peg through minting/burning mechanisms without full collateral backing. Higher risk of de-peg (e.g., UST/Luna collapse in 2022).
Token Valuation
No universally accepted model. Approaches include:
- NVT ratio (compare to peers and historical range)
- Fees/revenue analysis (protocol revenue as proxy for earnings)
- TVL multiples (market cap / TVL)
- Fully diluted valuation (FDV) vs circulating supply market cap
- Discounted cash flow on protocol fee revenue (experimental)
Custody
Self-custody: Hardware wallets (Ledger, Trezor) or software wallets. User controls private keys. "Not your keys, not your coins." Risk of loss if keys are lost.
Custodial: Exchanges (Coinbase, Kraken) or qualified custodians hold assets on behalf of users. Convenience but counterparty risk (e.g., FTX collapse).
Show full SKILL.md (427 more words)Show less
Regulatory Considerations
Regulatory treatment is evolving. In the US, crypto is generally treated as property for tax purposes — each sale, exchange, or use is a taxable event. Securities classification (Howey test) remains contentious for many tokens. Regulatory clarity is improving but varies significantly by jurisdiction.
Key Formulas
| Formula | Expression | Use Case |
|---|---|---|
| Staking Yield | (Rewards + MEV - Costs) / Staked Amount | Validator return |
| Impermanent Loss | 2*sqrt(p_ratio)/(1+p_ratio) - 1 | LP loss from price divergence |
| AMM Price | Price_x = y/x (for token x in terms of y) | DEX pricing |
| NVT Ratio | Market Cap / Daily On-Chain Tx Volume | Network valuation metric |
| Real Staking Yield | Nominal Yield - Token Inflation Rate | Inflation-adjusted return |
Worked Examples
Example 1: Staking Yield on Ethereum
Given: 32 ETH staked (one validator), 4.5% APR nominal yield, ETH price = $3,000 Calculate: Annual rewards in ETH and USD Solution: Annual ETH rewards = 32 ETH × 4.5% = 1.44 ETH Annual USD value = 1.44 ETH × $3,000 = $4,320 Total staked value = 32 × $3,000 = $96,000
If ETH supply inflation is approximately 0.5% per year (net of EIP-1559 burns), the real staking yield is roughly 4.5% - 0.5% = 4.0%. Note that the USD return depends entirely on ETH price changes — a 10% decline in ETH price would far exceed the 4.5% staking yield.
Example 2: Impermanent Loss Calculation
Given: A liquidity provider deposits equal value of ETH and USDC into a Uniswap pool. ETH price doubles from $2,000 to $4,000. Calculate: Impermanent loss Solution: p_ratio = $4,000 / $2,000 = 2.0 IL = 2 × sqrt(2.0) / (1 + 2.0) - 1 IL = 2 × 1.4142 / 3.0 - 1 IL = 2.8284 / 3.0 - 1 IL = 0.9428 - 1 = -0.0572 = -5.72%
The LP's position is worth 5.72% less than if they had simply held the tokens. If the pool earned 8% in trading fees over the period, the net return is 8% - 5.72% = 2.28% — still positive but substantially reduced. If ETH had tripled (p_ratio = 3), IL would be approximately 13.4%, potentially exceeding fee income.
Common Pitfalls
- Confusing APR with APY — compounding matters significantly at high yield rates (100% APR ≈ 171.8% APY)
- Impermanent loss can exceed trading fee income — LPs can have negative returns even in active pools if price divergence is large
- Smart contract risk in DeFi protocols — bugs, exploits, and rug pulls can result in total loss of deposited funds
- Comparing crypto "yields" to traditional fixed income — very different risk profiles; crypto yields compensate for smart contract risk, impermanent loss, token price volatility, and regulatory uncertainty
Cross-References
- historical-risk (wealth-management plugin): volatility and risk measurement (crypto exhibits extreme volatility)
- currencies-and-fx (wealth-management plugin): stablecoin and crypto-fiat exchange dynamics
- alternatives (wealth-management plugin): crypto as an alternative asset class
- tax-efficiency (wealth-management plugin): cryptocurrency tax reporting and optimization
© JoelLewis, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in plugins/wealth-management/skills/digital-assets of JoelLewis/finance_skills.
Open the folder on GitHubat commit 5c498ea
Compare with similar skills
Digital Assets next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Digital Assets this skillJoelLewis/finance_skills | 206 | — | ~2.2k | Automated safety check: Pass | MIT | |
| SurfBlockRunAI/ClawRouter | 6.6k | — | ~4k | Automated safety check: Pass | MIT | |
| Payram Crypto PaymentsPayRam/payram-mcp | 158 | — | ~2k | Automated safety check: Notes | None | |
| Emblemai Crypto Walletsickn33/agentic-awesome-skills | 47k | 2 repos | ~669 | Automated safety check: Pass | MIT | |
| Aomi Transactsickn33/agentic-awesome-skills | 47k | 1 repos | ~2.3k | Automated safety check: Pass | MIT | |
| Blockchain Developeraiskillstore/marketplace | 433 | 7 repos | ~2.5k | Automated safety check: Pass | None |
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Crypto wallet management across 7 blockchains via EmblemAI Agent Hustle API.
Aomi Transact
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Build natural-language crypto/DeFi agents and EVM MCP plugins (Claude Code, Cursor, Codex, Gemini).
Blockchain Developer
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Build production-ready Web3 applications, smart contracts, and decentralized systems.
Analyzing On Chain Data
jeremylongshore/tons-of-skills-marketplace
Process perform on-chain analysis including whale tracking, token flows, and network activity.
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Related
Categories
Questions about Digital Assets
What does Digital Assets do?
Analyze digital assets including cryptocurrency fundamentals, blockchain mechanics, DeFi protocols, and on-chain metrics. Digital Assets is an agent skill from JoelLewis/finance_skills. Analyze digital assets including cryptocurrency fundamentals, blockchain mechanics, DeFi protocols, and on-chain metrics.
When should I use Digital Assets?
Digital Assets fits situations like: the user asks about crypto investing; impermanent loss; on-chain valuation metrics; users mention blockchain.
How do I install Digital Assets in Claude Code?
Run `npx skills add JoelLewis/finance_skills --skill digital-assets -a claude-code`. Or copy the skill folder (plugins/wealth-management/skills/digital-assets in JoelLewis/finance_skills) into .claude/skills/digital-assets in your project. Claude Code loads it when a task matches its description.
How do I install Digital Assets in Codex?
Run `npx skills add JoelLewis/finance_skills --skill digital-assets -a codex`. Or copy the skill folder (plugins/wealth-management/skills/digital-assets in JoelLewis/finance_skills) into .agents/skills/digital-assets in your project. Codex loads it when a task matches its description.
Can I use Digital Assets in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add JoelLewis/finance_skills --skill digital-assets -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/digital-assets, .gemini/skills/digital-assets, .github/skills/digital-assets and .opencode/skills/digital-assets in your project.
What does Digital Assets need to run?
SKILL.md names no scripts, command-line tools or credentials: Digital Assets is instructions for the agent only.
Does Digital Assets access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Digital Assets safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Digital Assets use?
Digital Assets is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Digital Assets use?
About 2.2k tokens (SKILL.md is roughly 8.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Digital Assets?
Skills that share tags, products or a category with Digital Assets: Surf (BlockRunAI/ClawRouter, 6.6k stars), Payram Crypto Payments (PayRam/payram-mcp, 158 stars), Emblemai Crypto Wallet (sickn33/agentic-awesome-skills, 47k stars) and Aomi Transact (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Digital Assets?
JoelLewis (a GitHub user) maintains it in JoelLewis/finance_skills, which has 206 GitHub stars. The repository holds 91 skills in this directory. The repository was last updated on July 18, 2026.
Source: JoelLewis/finance_skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.