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 aospbooks/aosp-internal-book --skill securitygit clone --depth 1 https://github.com/aospbooks/aosp-internal-bookWrote 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/aospbooks/aosp-internal-book/security)<a href="https://agentmods.dev/skills/aospbooks/aosp-internal-book/security"><img src="https://agentmods.dev/badge/skills/aospbooks/aosp-internal-book/security.svg" alt="Measured on agentmods" 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 | $0.00134 | $0.00493 |
| Opus 5 | $0.00067 | $0.00246 |
| Sonnet 5 | $0.00027 | $0.00099 |
| Haiku 4.5 | $0.00013 | $0.00049 |
Grade A, and why
aosp-security 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 7d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- aosp-security — 100% identical, 0 lines differ
What it actually says
AOSP Part IX — Security
Trust roots, key storage, credential management, and content protection.
Chapters in this Part
40-security.md— SELinux on Android, Keystore/Keymint, Trusty TEE, gatekeeper/weaver, AVB, dm-verity, hardware-backed attestation41-credential-manager.md— CredentialManagerService, credential providers, passkeys/FIDO2, password and autofill integration, digital credentials42-drm.md— MediaDrm framework, Widevine L1/L2/L3, OEMCrypto, license acquisition, secure decoder/display path43-lfi-sandbox.md— Lightweight Fault Isolation: memory-safe in-process sandboxing for untrusted code (software codecs) without a separate process; the external/lfi verifier and runtime, the Soong LFI toolchain, and the libapexcodecs/codec2 integration
When to load which chapter
- Question mentions SELinux, Keystore, Keymint, Trusty, gatekeeper, weaver, AVB, attestation →
40-security.md - Question mentions Credential Manager, passkeys, FIDO2, autofill, digital credentials →
41-credential-manager.md - Question mentions MediaDrm, Widevine, OEMCrypto, secure decoder, license server →
42-drm.md - Question mentions LFI, lightweight fault isolation, in-process sandboxing, sandboxed software codec →
43-lfi-sandbox.md
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.
- 7d ago First seen · 35 lines · 134 tokens per session scan A 0b8303f0640e
aosp-security is a skill published in the GitHub repository aospbooks/aosp-internal-book (131 stars, last pushed 8d ago), licensed Apache-2.0. It adds 134 tokens to every session and 493 once invoked, about $0.0007 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 2026-08-30.
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