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 skills/aospbooks/aosp-internal-book/framework-corenpx skills add aospbooks/aosp-internal-book --skill framework-coregit 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/framework-core)<a href="https://agentmods.dev/skills/aospbooks/aosp-internal-book/framework-core"><img src="https://agentmods.dev/badge/skills/aospbooks/aosp-internal-book/framework-core.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 | $0.00156 | $0.00565 |
| Opus 5 | $0.00078 | $0.00282 |
| Sonnet 5 | $0.00031 | $0.00113 |
| Haiku 4.5 | $0.00016 | $0.00056 |
Grade A, and why
aosp-framework-core 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- aosp-framework-core — 100% identical, 0 lines differ
What it actually says
AOSP Part VI — Framework Core
The Java/Kotlin layer running inside system_server that manages activities, windows, displays, and the View tree apps render into.
Chapters in this Part
20-system-server.md— SystemServer.java, the four boot phases, service registration, Watchdog, lifecycle management, shutdown sequence21-intent-system.md— Intent matching, IntentFilter, IntentResolver, PackageManager queries, package visibility, intent verification22-activity-and-window.md— ActivityTaskManagerService, WindowManagerService, activity lifecycle state machine, task/stack model, splash screens23-window-system.md— WindowState, SurfaceControl, input dispatching, focus tracking, IME insets, transitions24-display-system.md— DisplayManagerService, logical vs. physical displays, color modes, HDR, brightness curves, refresh-rate switching25-view-system.md— View hierarchy, measure/layout/draw, Canvas/RenderNode, hardware acceleration, accessibility hooks
When to load which chapter
- Question mentions system_server, boot phases, ServiceManager, Watchdog →
20-system-server.md - Question mentions Intent matching, IntentFilter, IntentResolver, package visibility →
21-intent-system.md - Question mentions ATM, WMS, activity lifecycle, splash screen, task/stack →
22-activity-and-window.md - Question mentions WindowState, SurfaceControl, input dispatch, focus, IME →
23-window-system.md - Question mentions DisplayManager, displays, HDR, refresh rate, brightness →
24-display-system.md - Question mentions View, ViewGroup, measure/layout/draw, Canvas, RenderNode →
25-view-system.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.
- 6d ago First seen · 43 lines · 156 tokens per session scan A e1c2c47bf957
aosp-framework-core is a skill published in the GitHub repository aospbooks/aosp-internal-book (130 stars, last pushed 7d ago), licensed Apache-2.0. It adds 156 tokens to every session and 565 once invoked, about $0.0008 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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