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 claude-dev-suite/claude-dev-suite --skill hwigit clone --depth 1 https://github.com/claude-dev-suite/claude-dev-suiteWrote 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/claude-dev-suite/claude-dev-suite/hwi)<a href="https://agentmods.dev/skills/claude-dev-suite/claude-dev-suite/hwi"><img src="https://agentmods.dev/badge/skills/claude-dev-suite/claude-dev-suite/hwi/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/claude-dev-suite/claude-dev-suite/hwi"><img src="https://agentmods.dev/badge/skills/claude-dev-suite/claude-dev-suite/hwi.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00072 | $0.01712 |
| Opus 5.5 | $0.00029 | $0.00685 |
| Sonnet 5.5 | $0.00014 | $0.00342 |
| Haiku 4.5 | $0.00007 | $0.00171 |
Grade A, and why
bitcoin-hardware-hwi 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 1mo 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 — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.
HWI (Hardware Wallet Interface)
Python library + CLI for vendor-agnostic HW wallet operations.
Maintained by Bitcoin Core team (bitcoin-core/HWI).
Project status — winding down (as of September 2026)
In issue #850 "Future of this repo"
(opened 18 August 2026; covered by Optech on 28 August 2026) Ava Chow
(achow101) set out the end-of-life plan: finish MuSig2, cut what will
likely be the final release, then hold in minimal maintenance mode
until a drop-in replacement is ready, at which point the repo is
archived.
Stated reasons: HWI has been essentially a solo project for years, and Python's limitations prevent deterministic builds, so it can never ship inside Bitcoin Core — the goal it was originally written for.
Effective immediately from that announcement:
- No new features or feature requests, except those needed for MuSig2.
- No PRs for new devices. The supported-device list below is frozen.
- Latest release is still 3.2.0 (10 February 2026); MuSig2 work is in flight (PR #794, open as of September 2026).
The announcement names BHWI — Wizardsardine's Rust reimplementation, still self-described as WIP as of September 2026 — as the promising successor. Treat BHWI as the forward-looking integration target; HWI remains the right choice for anything shipping today.
Why HWI
Each HW vendor has its own protocol (Trezor's, Ledger's BOLOS, Coldcard's CKCC, BitBox02's, Jade's). HWI unifies them under one API:
enumerate— list connected devices.getmasterxpub/getxpub.displayaddress.signtx/signpsbt.signmessage.setupdevice,wipe, etc.
Supported vendors
As of HWI 3.2.0 (February 2026). Frozen — no new devices are being accepted (see Project status).
- Trezor Model One, Model T, Safe 3, Safe 5 (Safe 5 added in 3.1.0, September 2024).
- Ledger Nano S Plus, Nano X, Stax, Flex.
- Coldcard Mk4, Mk5, Q.
- BitBox02 (Multi + Bitcoin-Only), BitBox02 Nova (added in 3.2.0).
- Blockstream Jade, Jade Plus (added in 3.2.0).
- (Some legacy: KeepKey.)
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.
- 1mo ago Changed · +67 lines 7147f34e4391
- 1mo ago First seen · 106 lines · 72 tokens per session scan A 141032f34280
bitcoin-hardware-hwi is a skill published in the GitHub repository claude-dev-suite/claude-dev-suite (46 stars, last pushed 3d ago), licensed MIT. It adds 72 tokens to every session and 1,712 once invoked, about $0.0003 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 2026-09-03.
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