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.
npx skills add charlieviettq/awesome-agent-skill --skill algo-blockchain-smart-contractgit clone --depth 1 https://github.com/charlieviettq/awesome-agent-skillWrote 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.
[](https://agentmods.dev/skills/charlieviettq/awesome-agent-skill/algo-blockchain-smart-contract)<a href="https://agentmods.dev/skills/charlieviettq/awesome-agent-skill/algo-blockchain-smart-contract"><img src="https://agentmods.dev/badge/skills/charlieviettq/awesome-agent-skill/algo-blockchain-smart-contract/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/charlieviettq/awesome-agent-skill/algo-blockchain-smart-contract"><img src="https://agentmods.dev/badge/skills/charlieviettq/awesome-agent-skill/algo-blockchain-smart-contract.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00071 | $0.01050 |
| Opus 5 | $0.00036 | $0.00525 |
| Sonnet 5 | $0.00014 | $0.00210 |
| Haiku 4.5 | $0.00007 | $0.00105 |
Grade A, and why
"algo-blockchain-smart-contract" 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 12d 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.
This is a copy
88% identical to algo-blockchain-smart-contract — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.
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:
- Define state variables (stored on-chain, costs gas)
- Define functions: external (callable by users), internal (helper logic)
- Implement access control (onlyOwner, role-based, multisig)
- 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.
What ships with it
3 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.
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.
- 12d ago First seen · 95 lines · 71 tokens per session scan A 6d28e4cde77e
"algo-blockchain-smart-contract" is a skill published in the GitHub repository charlieviettq/awesome-agent-skill (25 stars, last pushed 1mo ago), licensed MIT. It adds 71 tokens to every session and 1,050 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to algo-blockchain-smart-contract, differing in 8 lines, and is treated as a copy.
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