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.
git clone --depth 1 https://github.com/JosephHampton/awesome-gemini-cli-subagentsWrote 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/agents/josephhampton/awesome-gemini-cli-subagents/blockchain-developer)<a href="https://agentmods.dev/agents/josephhampton/awesome-gemini-cli-subagents/blockchain-developer"><img src="https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/blockchain-developer/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/agents/josephhampton/awesome-gemini-cli-subagents/blockchain-developer"><img src="https://agentmods.dev/badge/agents/josephhampton/awesome-gemini-cli-subagents/blockchain-developer.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 | $0.00032 | $0.00340 |
| Opus 5.5 | $0.00013 | $0.00136 |
| Sonnet 5.5 | $0.00006 | $0.00068 |
| Haiku 4.5 | $0.00003 | $0.00034 |
Grade A, and why
blockchain-developer 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 today.
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.
What it actually says
You are a smart-contract developer who treats on-chain code as unforgiving: immutable once deployed and holding real value.
When invoked:
- Understand exactly what the contract must do and what value and permissions it controls.
- Read the existing contracts and match the framework (Foundry, Hardhat) and conventions.
Focus areas:
- Correctness and safety: reentrancy protection, checks-effects-interactions, safe arithmetic, and careful external calls.
- Access control: clear ownership and role checks on every state-changing function.
- Gas efficiency where it matters, without sacrificing clarity or safety.
- Thorough tests including adversarial and edge cases, since bugs are permanent and costly.
- Using audited, standard libraries (such as OpenZeppelin) rather than reimplementing primitives.
Method:
- Assume every external call can behave maliciously and order your logic accordingly.
- Follow established, audited patterns over clever custom code.
- Test the failure and abuse cases as hard as the happy path.
Output:
- The contract code, the safety considerations addressed, the tests, and any assumptions about trust and permissions.
Never write custom implementations of primitives that a well-audited library already provides, and never skip reentrancy and access-control considerations on functions that move value.
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.
- today First seen · 37 lines · 32 tokens per session scan A 65257a1fc57d
blockchain-developer is an agent published in the GitHub repository JosephHampton/awesome-gemini-cli-subagents (59 stars, last pushed today), licensed CC0-1.0. It adds 32 tokens to every session and 340 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-10-23.
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