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 vasilyu1983/AI-Agents-public --skill software-crypto-web3git clone --depth 1 https://github.com/vasilyu1983/AI-Agents-publicWrote 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/vasilyu1983/ai-agents-public/software-crypto-web3)<a href="https://agentmods.dev/skills/vasilyu1983/ai-agents-public/software-crypto-web3"><img src="https://agentmods.dev/badge/skills/vasilyu1983/ai-agents-public/software-crypto-web3/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/vasilyu1983/ai-agents-public/software-crypto-web3"><img src="https://agentmods.dev/badge/skills/vasilyu1983/ai-agents-public/software-crypto-web3.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high System Prompt Leakage · line 141 Skill contains instructions that could directly expose system prompts, internal rules, or hidden instructions to users or external parties.Fix: Remove any instructions that reveal, print, or output system prompts or internal rules. System instructions should never be exposed to end users.
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 | $0.00043 | $0.04528 |
| Opus 5 | $0.00022 | $0.02264 |
| Sonnet 5 | $0.00009 | $0.00906 |
| Haiku 4.5 | $0.00004 | $0.00453 |
Grade A, and why
software-crypto-web3 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 228 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Software Crypto/Web3 Engineering
Use this skill to design, implement, and review production blockchain systems: contracts and programs, signing and custody, protocol integrations, testing, audits, and operational controls.
Defaults to:
- Security-first design with explicit threat models
- Comprehensive testing: unit, integration, fork/simulation, fuzzing, invariants
- Formal methods for high-value paths
- Conservative key custody and signing controls
- Fresh web verification for volatile ecosystem facts
Quick Reference
| Task | Default | Use When |
|---|---|---|
| EVM contracts | Foundry first, Hardhat when plugin-heavy TS workflows matter | Solidity, DeFi, token standards, upgradeable systems |
| Solana programs | Anchor + current Solana SDK guidance | Rust programs, SPL assets, high-throughput apps |
| Cosmos contracts | CosmWasm | IBC-native or Cosmos appchain ecosystems |
| TON contracts | Tact or FunC + Blueprint | Telegram distribution, TON-native wallets and assets |
| Bitcoin/Lightning | Bitcoin Core + BDK/LND patterns | Wallets, PSBT, settlement, payment rails |
| Account abstraction | ERC-7702 for EOAs, ERC-4337 for smart accounts | Batched txs, gas sponsorship, session keys, social recovery |
| Security review | Slither, Echidna, Medusa, Halmos, Certora | Audits, pre-deploy review, invariant enforcement |
| Cross-chain | Chainlink CCIP, LayerZero, Wormhole, IBC | Token bridges, cross-chain messaging, interoperability |
| Backend integration | Queue-backed RPC clients + idempotent handlers | Custody, deposits, withdrawals, webhook/event ingestion |
| Research | Official docs/specs first, then ecosystem analytics | Chain selection, framework choice, current best practice |
When to Use This Skill
- Smart contract and blockchain program development
- DeFi, token, NFT, governance, and bridge integrations
- Backend crypto infrastructure, custody, and signing workflows
- Chain and framework tradeoff analysis
- Security reviews, audit preparation, and production hardening
What ships with it
22 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.
- agents/openai.yaml 312 B
- assets/bitcoin/template-bitcoin-core.md 13 KB
- assets/cosmos/template-cosmwasm.md 18 KB
- assets/ethereum/template-solidity-foundry.md 17 KB
- assets/ethereum/template-solidity-hardhat.md 12 KB
- assets/solana/template-rust-anchor.md 17 KB
- assets/ton/template-func-blueprint.md 16 KB
- assets/ton/template-tact-blueprint.md 18 KB
- data/sources.json 46 KB
- learnings.consolidated.md 596 B
- learnings.md 1.2 KB
- references/backend-integration-best-practices.md 24 KB
- references/blockchain-best-practices.md 14 KB
- references/cosmwasm-best-practices.md 20 KB
- references/cross-chain-bridges.md 25 KB
- references/defi-protocol-patterns.md 21 KB
- references/mica-casp-checklist.md 11 KB
- references/nft-token-standards.md 17 KB
- references/operational-playbook.md 21 KB
- references/rust-solana-best-practices.md 23 KB
- references/solidity-best-practices.md 20 KB
- references/ton-best-practices.md 17 KB
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.
- 9d ago First seen · 228 lines · 43 tokens per session scan A 0bc71201e981
software-crypto-web3 is a skill published in the GitHub repository vasilyu1983/AI-Agents-public (87 stars, last pushed 10d ago), licensed MIT. It adds 43 tokens to every session and 4,528 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 2026-09-03.
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