New: 98,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Algo Blockchain Smart Contract

by asgard-ai-platform in asgard-ai-platform/skills

Design and implement smart contracts as self-executing programmatic agreements on blockchain.

MITAuto-check passedBackend & APIs

Install Algo Blockchain Smart Contract

skills CLI
$ npx skills add asgard-ai-platform/skills --skill algo-blockchain-smart-contract -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install asgard-ai-platform/skills algo-blockchain-smart-contract --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/asgard-ai-platform/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/algo-blockchain-smart-contract .claude/skills/algo-blockchain-smart-contract && rm -rf skills-src

Use ~/.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/

Facts

Skill name
algo-blockchain-smart-contract
GitHub stars
242
Token cost
~1.2k tokens
SKILL.md length
444 words
Files
4 (incl. references)
Skills in repo
207
Repo updated
First seen
Licence
MIT

At a glance

Design and implement smart contracts as self-executing programmatic agreements on blockchain.

  • Works in 4 steps: Input Validation → Core Algorithm → Verification → …
  • The user needs to build automated on-chain logic
  • SKILL.md covers Overview, When to Use, Algorithm and Output Format, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Algo Blockchain Smart Contract is an agent skill from asgard-ai-platform/skills. Design and implement smart contracts as self-executing programmatic agreements on blockchain. Use this skill when the user needs to build automated on-chain logic, evaluate smart contract security, or design tokenized business rules — even if they say 'smart contract development', 'automated agreement', or 'on-chain logic'.

Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including reference files (for example `examples/sample_scenario.md`, `references/gas-optimization.md` and `references/vulnerability-patterns.md`).

It sits in Backend & APIs, covering Smart contracts. The repository describes itself as: 301 open-source coding agent skills across 22 domains — methodology, judgment & gotchas packaged as Claude Agent Skills for the Asgard AI Platform. The licence is MIT.

When your agent uses it

  • The user needs to build automated on-chain logic
  • Evaluate smart contract security
  • Design tokenized business rules — even if they say smart contract development
  • Automated agreement

Example prompts

  • “smart contract development”
  • “automated agreement”
  • “on-chain logic”
  • “/algo-blockchain-smart-contract”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Input Validation
  2. Core Algorithm
  3. Verification
  4. Output

What it can do on your machine

Read from SKILL.md and the folder at commit 4e7f4f8. 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 (its code samples are json).

    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

Algo Blockchain Smart Contract loads about 1.2k tokens when it runs, and up to ~8.5k if it reads all its reference files. Until then it costs about 89 tokens; SKILL.md has 444 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~89
When it runs · the whole SKILL.md, loaded when a task matches
~1.2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~8.5k

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 asgard-ai-platform/skills at commit 4e7f4f8, republished under its MIT licence (© asgard-ai-platform). 444 words, ~1,217 tokens.

Download SKILL.mdSave it as .claude/skills/algo-blockchain-smart-contract/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.
name
algo-blockchain-smart-contract
description
Design and implement smart contracts as self-executing programmatic agreements on blockchain. Use this skill when the user needs to build automated on-chain logic, evaluate smart contract security, or design tokenized business rules — even if they say 'smart contract development', 'automated agreement', or 'on-chain logic'.
metadata.category
WP-49 區塊鏈演算法
metadata.tags
blockchain, smart-contract, solidity, defi

Smart Contracts

Overview

Smart contracts are self-executing programs stored on a blockchain that automatically enforce agreement terms when conditions are met. Primarily written in Solidity (Ethereum/EVM) or Rust (Solana). Once deployed, code is immutable — bugs cannot be patched without migration. Security is critical as exploits are irreversible.

When to Use

Trigger conditions:

  • Automating multi-party agreements that execute without intermediaries
  • Building token-based systems (NFTs, DeFi, governance)
  • Creating transparent, auditable business logic on-chain

When NOT to use:

  • For simple CRUD operations (use a database)
  • When business logic changes frequently (immutability makes updates costly)
  • When off-chain data is the primary input (oracle dependency is risky)

Algorithm

IRON LAW: Deployed Smart Contracts Are IMMUTABLE — Bugs Are Permanent
Once deployed, contract code cannot be changed. A bug that loses funds
is IRREVERSIBLE. There is no "hotfix" or "rollback" (unless the
contract includes an upgrade proxy pattern). Security audit BEFORE
deployment is not optional — it is the only protection.
Phase 1: Input Validation

Define: contract purpose, participants, conditions, state variables, access controls. Determine: which logic MUST be on-chain vs which can be off-chain. Gate: Business logic specified, on-chain necessity justified.

Phase 2: Core Algorithm

Design:

  1. Define state variables (stored on-chain, costs gas)
  2. Define functions: external (callable by users), internal (helper logic)
  3. Implement access control (onlyOwner, role-based, multisig)
  4. Handle edge cases: reentrancy guards, integer overflow checks, gas limits

Security patterns:

  • Checks-Effects-Interactions (prevent reentrancy)
  • Pull over push (for payments)
  • Minimal on-chain data (store hashes, not full data)
  • Upgradeable proxy pattern (if mutability needed)
Phase 3: Verification

Test: unit tests covering all paths, edge cases, access control violations. Security audit: automated (Slither, Mythril) + manual review. Deploy to testnet first. Gate: All tests pass, automated security scan clean, testnet deployment successful.

Phase 4: Output

Return contract design with security analysis.

Output Format

json
{
  "contract": {"name": "Escrow", "functions": 5, "state_variables": 4, "access_roles": ["buyer", "seller", "arbiter"]},
  "security": {"audit_status": "passed", "patterns_used": ["checks_effects_interactions", "pull_payment"], "known_risks": ["oracle_dependency"]},
  "metadata": {"platform": "ethereum", "language": "solidity", "estimated_gas": 250000}
}

Examples

Sample I/O

Input: Escrow contract: buyer deposits, seller delivers, arbiter resolves disputes Expected: Contract with: deposit(), confirmDelivery(), dispute(), withdraw() functions. Funds held until conditions met.

Show full SKILL.md (172 more words)Show less
Edge Cases
InputExpectedWhy
Gas price spikeTransaction may fail or cost moreAlways set gas limits and handle failures
Reentrant callMust be blockedReentrancy is the #1 smart contract vulnerability
Contract upgrade neededUse proxy pattern or migrateImmutability by default

Gotchas

  • Reentrancy attacks: The DAO hack ($60M) exploited reentrancy. Always use the Checks-Effects-Interactions pattern and/or ReentrancyGuard.
  • Integer overflow/underflow: Solidity 0.8+ has built-in overflow checks. Earlier versions require SafeMath library. Never assume arithmetic is safe.
  • Front-running: Miners/validators can see pending transactions and insert their own first (MEV). Sensitive operations need commit-reveal schemes.
  • Gas optimization: Every operation costs gas. Minimize storage writes (most expensive), use events for data that doesn't need on-chain querying, pack variables.
  • Upgradeability vs immutability: Proxy patterns allow upgrades but add complexity and trust assumptions (who can upgrade?). Choose based on trust model.
  • Oracle dependency: Smart contracts can't access off-chain data directly. Oracles (Chainlink, etc.) introduce trust assumptions. A compromised oracle compromises the contract.

References

  • For common vulnerability patterns, see references/vulnerability-patterns.md
  • For gas optimization techniques, see references/gas-optimization.md

© asgard-ai-platform, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 3 other files (references) in algo-blockchain-smart-contract of asgard-ai-platform/skills.

  • SKILL.md
  • examples/sample_scenario.md
  • references/gas-optimization.md
  • references/vulnerability-patterns.md

Open the folder on GitHubat commit 4e7f4f8

Compare with similar skills

Algo Blockchain Smart Contract 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.

Algo Blockchain Smart Contract compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Algo Blockchain Smart Contract this skillasgard-ai-platform/skills242—~1.2kAutomated safety check: PassMIT
Fizz Convertpashov/skills1.2k2 repos~3.7kAutomated safety check: PassMIT
Solana Devsolana-foundation/solana-dev-skill573—~3.8kAutomated safety check: PassMIT
Feynman Auditor0xiehnnkta/nemesis-auditor2431 repos~11kAutomated safety check: PassMIT
Smart Contract Auditgreatpie/smart-contract-audit-skill101—~1.1kAutomated safety check: PassNone
RadarAuditware/radar154—~2.1kAutomated safety check: PassGPL-3.0

Similar skills

  • Fizz Convert

    pashov/skills

    Convert English-language properties in PROPERTIES.md (produced by the Fizz skill) into Solidity assertions inside the existing fuzz harness, then flip their checkboxes.

    1.2k GitHub starsUsed in 2 repos~3.7k tokens
    Backend & APIsAuto-check passed

  • Solana Dev

    solana-foundation/solana-dev-skill

    A skill your agent uses when user asks to "build a Solana dapp", "write an Anchor program", "create a token", "debug Solana errors", "set up wallet connection", "test my Solana program", "fuzz my…

    573 GitHub stars~3.8k tokensUpdated 2 days ago
    Backend & APIsAuto-check passed

  • Feynman Auditor

    0xiehnnkta/nemesis-auditor

    Deep business logic bug finder using the Feynman technique. An agent skill from 0xiehnnkta/nemesis-auditor.

    243 GitHub starsUsed in 1 repo~11k tokens
    Backend & APIsAuto-check passed

  • Smart Contract Audit

    greatpie/smart-contract-audit-skill

    Script-backed, out-of-box auditing workflow for Solidity/EVM repositories based on EVMbench detect/patch/exploit methodology.

    101 GitHub stars~1.1k tokensUpdated 7 mo ago
    Backend & APIsAuto-check passed

  • Radar

    Auditware/radar

    Use radar for smart contract security analysis, AST generation, and detection template development.

    154 GitHub stars~2.1k tokensUpdated 1 mo ago
    Backend & APIsAuto-check passed

  • Solidity Auditor

    Gabson0x/bountyforge

    Security audit of Solidity code while you develop. An agent skill from Gabson0x/bountyforge.

    442 GitHub stars~3.7k tokensUpdated 24 days ago
    Backend & APIsAuto-check passed

More from asgard-ai-platform/skills

All 207 skills in this repo

  • Algo Ecom Bm25

    asgard-ai-platform/skills

    Implement BM25 ranking function for e-commerce product search relevance scoring.

    242 GitHub stars~1.4k tokensUpdated 4 mo ago
    Auto-check passed

  • Algo Mfg Cpk

    asgard-ai-platform/skills

    Calculate Cpk process capability index to assess whether a process meets specification requirements.

    242 GitHub stars~1.1k tokensUpdated 4 mo ago
    Auto-check passed

  • Algo Price Elasticity

    asgard-ai-platform/skills

    Calculate price elasticity of demand to quantify how price changes affect sales volume.

    242 GitHub stars~1.1k tokensUpdated 4 mo ago
    Auto-check passed

  • Algo Rank Bayesian

    asgard-ai-platform/skills

    Apply Bayesian averaging to rank items by combining observed ratings with prior expectations.

    242 GitHub stars~1.1k tokensUpdated 4 mo ago
    Auto-check passed

  • Algo Rank Elo

    asgard-ai-platform/skills

    Implement Elo rating system to rank items or players from pairwise comparison outcomes.

    242 GitHub stars~1.1k tokensUpdated 4 mo ago
    Auto-check passed

  • Algo Rank Wilson

    asgard-ai-platform/skills

    Calculate Wilson Score confidence intervals for ranking items by positive proportion with sample size correction.

    242 GitHub stars~1.1k tokensUpdated 4 mo ago
    Auto-check passed

Categories

Questions about Algo Blockchain Smart Contract

What does Algo Blockchain Smart Contract do?

Design and implement smart contracts as self-executing programmatic agreements on blockchain. Algo Blockchain Smart Contract is an agent skill from asgard-ai-platform/skills. Design and implement smart contracts as self-executing programmatic agreements on blockchain.

When should I use Algo Blockchain Smart Contract?

Algo Blockchain Smart Contract fits situations like: the user needs to build automated on-chain logic; evaluate smart contract security; design tokenized business rules — even if they say smart contract development; automated agreement.

How do I install Algo Blockchain Smart Contract in Claude Code?

Run `npx skills add asgard-ai-platform/skills --skill algo-blockchain-smart-contract -a claude-code`. Or copy the skill folder (algo-blockchain-smart-contract in asgard-ai-platform/skills) into .claude/skills/algo-blockchain-smart-contract in your project. Claude Code loads it when a task matches its description.

How do I install Algo Blockchain Smart Contract in Codex?

Run `npx skills add asgard-ai-platform/skills --skill algo-blockchain-smart-contract -a codex`. Or copy the skill folder (algo-blockchain-smart-contract in asgard-ai-platform/skills) into .agents/skills/algo-blockchain-smart-contract in your project. Codex loads it when a task matches its description.

Can I use Algo Blockchain Smart Contract 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 asgard-ai-platform/skills --skill algo-blockchain-smart-contract -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/algo-blockchain-smart-contract, .gemini/skills/algo-blockchain-smart-contract, .github/skills/algo-blockchain-smart-contract and .opencode/skills/algo-blockchain-smart-contract in your project.

What does Algo Blockchain Smart Contract need to run?

SKILL.md names no scripts, command-line tools or credentials: Algo Blockchain Smart Contract is instructions for the agent only.

Does Algo Blockchain Smart Contract 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 Algo Blockchain Smart Contract 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 Algo Blockchain Smart Contract use?

Algo Blockchain Smart Contract 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 Algo Blockchain Smart Contract use?

About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 7.3k tokens, read only when the agent opens those files.

What are the alternatives to Algo Blockchain Smart Contract?

Skills that share tags, products or a category with Algo Blockchain Smart Contract: Fizz Convert (pashov/skills, 1.2k stars), Solana Dev (solana-foundation/solana-dev-skill, 573 stars), Feynman Auditor (0xiehnnkta/nemesis-auditor, 243 stars) and Smart Contract Audit (greatpie/smart-contract-audit-skill, 101 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Algo Blockchain Smart Contract?

asgard-ai-platform (a GitHub organization) maintains it in asgard-ai-platform/skills, which has 242 GitHub stars. The repository holds 207 skills in this directory. The repository was last updated on June 6, 2026.

Source: asgard-ai-platform/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.