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 j4flmao/agent-skills --skill blockchain-bitcoingit clone --depth 1 https://github.com/j4flmao/agent-skillsWrote 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/j4flmao/agent-skills/blockchain-bitcoin)<a href="https://agentmods.dev/skills/j4flmao/agent-skills/blockchain-bitcoin"><img src="https://agentmods.dev/badge/skills/j4flmao/agent-skills/blockchain-bitcoin/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/j4flmao/agent-skills/blockchain-bitcoin"><img src="https://agentmods.dev/badge/skills/j4flmao/agent-skills/blockchain-bitcoin.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 | $0.00232 | $0.06488 |
| Opus 5 | $0.00116 | $0.03244 |
| Sonnet 5 | $0.00046 | $0.01298 |
| Haiku 4.5 | $0.00023 | $0.00649 |
Grade A, and why
blockchain-bitcoin 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 6d 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 — 562 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Blockchain Bitcoin
Purpose
Guide Bitcoin protocol engineering, Bitcoin Core development, Bitcoin Script programming, mining infrastructure, Lightning Network implementation, and Bitcoin L2 ecosystem. Covers the full stack from consensus protocol to application layer.
Agent Protocol
Trigger
"Bitcoin", "Bitcoin Core", "bitcoind", "Bitcoin Script", "BTC script", "Taproot", "Bitcoin opcode", "P2PKH", "P2SH", "P2WSH", "mining Bitcoin", "Proof of Work Bitcoin", "SHA-256d", "ASIC mining", "Stratum", "Lightning Network", "LN", "HTLC", "onion routing", "channel", "Ordinals", "inscription", "BRC-20", "Runes", "Bitcoin NFT", "Bitcoin L2", "Stacks", "Clarity", "RSK", "Rootstock", "Babylon", "Bitcoin staking", "BIP standard", "BIP-32", "BIP-39", "BIP-44", "BIP-340", "BIP-341", "BIP-342", "PSBT", "Bitcoin mempool", "UTXO", "Bitcoin C++", "Bitcoin protocol"
Input Context
- Layer (consensus/wallet/L2/application)
- Bitcoin Core version for implementation reference
- Script requirements (Taproot vs legacy, opcode set)
- Security model (trust assumptions, finality requirements)
- Performance requirements (TPS, confirmation time, cost)
Output Artifact
Technical specification covering: scope, architecture, key mechanisms, implementation approach, and L2 integration where applicable.
Response Format
- Scope: consensus layer vs wallet vs L2 vs application protocol
- Architecture: Bitcoin Core component breakdown, data flow, key source files
- Key mechanisms: PoW difficulty, Script execution, UTXO set management
- Implementation: C++ patterns, data structures, optimization techniques
- Layer 2: Lightning Network architecture, channel lifecycle, or L2 integration
Completion Criteria
- Consensus rules correctly referenced from Bitcoin Core source (src/validation.cpp)
- Script operations specify witness vs legacy, opcode restrictions
- Security model accounts for probabilistic finality (6+ confirmations)
- Implementation respects Bitcoin's conservative upgrade philosophy
- Layer 2 design addresses griefing and channel force-close scenarios
What ships with it
16 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.
- references/bip-standards.md 9.3 KB
- references/bitcoin-core-deep.md 12 KB
- references/bitcoin-l2s.md 15 KB
- references/bitcoin-script-and-taproot.md 7.9 KB
- references/blockchain-bitcoin-advanced.md 2.2 KB
- references/blockchain-bitcoin-fundamentals.md 2.3 KB
- references/mining-pow.md 8.4 KB
- references/ordinals-runes.md 8.8 KB
- references/reference_guide_1.md 206 KB
- references/reference_guide_2.md 206 KB
- references/reference_guide_3.md 206 KB
- references/reference_guide_4.md 206 KB
- references/reference_guide_5.md 206 KB
- references/reference_guide_6.md 206 KB
- references/reference_guide_7.md 206 KB
- references/reference_guide_8.md 206 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.
- 6d ago First seen · 562 lines · 232 tokens per session scan A c63cbba1cd29
blockchain-bitcoin is a skill published in the GitHub repository j4flmao/agent-skills (22 stars, last pushed 3d ago), licensed MIT. It adds 232 tokens to every session and 6,488 once invoked, about $0.0012 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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