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 agentmods add commands/nylas/cli/explain-gpggit clone --depth 1 https://github.com/nylas/cliWhat 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 | $0.00000 | $0.09982 |
| Opus 5 | $0.00000 | $0.04991 |
| Sonnet 5 | $0.00000 | $0.01996 |
| Haiku 4.5 | $0.00000 | $0.00998 |
Grade A, and why
explain-gpg 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 yesterday.
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 — 971 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Understanding GPG: A Complete Guide
A comprehensive guide to GPG (GNU Privacy Guard) cryptography, email signing, and verification.
Table of Contents
- What is GPG?
- Asymmetric Cryptography
- GPG Key Anatomy
- Digital Signatures
- Email Signing (PGP/MIME)
- Signature Verification
- Trust Model
- Key Servers
- CLI Integration
- Security Considerations
What is GPG?
GPG (GNU Privacy Guard) is a free implementation of the OpenPGP standard (RFC 4880). It provides:
- Digital Signatures - Prove authorship and integrity
- Encryption - Protect confidential data
- Key Management - Create, store, and share cryptographic keys
┌─────────────────────────────────────────────────────────────────┐
│ GPG ECOSYSTEM │
├─────────────────────────────────────────────────────────────────┤
│ │
│ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐ │
│ │ OpenPGP │ │ GPG │ │ Key Servers │ │
│ │ Standard │───▶│ Software │◀──▶│ (Public) │ │
│ │ (RFC 4880) │ │ │ │ │ │
│ └──────────────┘ └──────────────┘ └──────────────┘ │
│ │ │
│ ▼ │
│ ┌──────────────────┐ │
│ │ Your Keyring │ │
│ │ ┌────────────┐ │ │
│ │ │Private Keys│ │ │
│ │ │Public Keys │ │ │
│ │ └────────────┘ │ │
│ └──────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────┘
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.
- yesterday First seen · 971 lines · 0 tokens per session scan A 2ee6939b2721
explain-gpg is a command published in the GitHub repository nylas/cli (68 stars, last pushed 13d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 9,982 tokens. 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 2026-08-30.
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