aosp-framework-services

aosp-framework-services is a skill for Claude Code, Codex from aospbooks/aosp-internal-book. It costs 212 tokens per session (817 once invoked), scanned A, original, Apache-2.0.

A reference guide to Android system services that manage installed apps, shared content, notifications, power, background work, users, accounts, location, and storage. These services keep system-wide and per-user state for apps.

In plain words
What is it for?
Use it to investigate package installation and permissions, ContentProviders, notifications, battery and background limits, multiple users, account syncing, location, and storage behavior.
Why use it?
It gives developers a map of the Android framework areas involved when an app is installed, runs work in the background, shares data, posts notifications, or uses device resources.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Install

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.

agentmods
npx agentmods add skills/aospbooks/aosp-internal-book/framework-services
Any agent
npx skills add aospbooks/aosp-internal-book --skill framework-services
Clone the repo
git clone --depth 1 https://github.com/aospbooks/aosp-internal-book

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for aosp-framework-services

README.md
[![agentmods](https://agentmods.dev/badge/skills/aospbooks/aosp-internal-book/framework-services.svg)](https://agentmods.dev/skills/aospbooks/aosp-internal-book/framework-services)
Your own site
<a href="https://agentmods.dev/skills/aospbooks/aosp-internal-book/framework-services"><img src="https://agentmods.dev/badge/skills/aospbooks/aosp-internal-book/framework-services.svg" alt="Measured on agentmods" height="20"></a>
Per session 212 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 817 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00212 $0.00817
Opus 5 $0.00106 $0.00409
Sonnet 5 $0.00042 $0.00163
Haiku 4.5 $0.00021 $0.00082

Measured 6d ago against content hash a241521b1313, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

aosp-framework-services 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

agents/_content/parts/framework-services/SKILL.md · 53 lines

How it starts

The opening of the file, as written. The whole thing — 53 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AOSP Part VII — Framework Services

Java system services that own per-app and per-user state: package install, content sharing, notifications, power, background work, multi-user, accounts, location, and storage.

Chapters in this Part

  • 26-package-manager.md — PMS, install/uninstall flow, APK parsing, permissions, app components, package visibility
  • 27-content-providers.md — ContentProvider, ContentResolver, URI permissions, observers, FileProvider, MediaStore worked example
  • 28-notifications.md — NotificationManagerService, channels, ranker, posting/delivery, listener services, conversations, bubbles
  • 29-power-management.md — PowerManagerService, wake locks, Doze, App Standby, battery saver, screen on/off, BatteryStats
  • 30-background-tasks.md — JobScheduler, WorkManager, AlarmManager, foreground services, exact alarm policy, restrictions and quotas
  • 31-multi-user.md — UserManagerService, user types (full/profile/system), creation/start/stop, restrictions, cross-user calls
  • 32-account-sync.md — AccountManagerService, authenticator/syncadapter, token caching, SyncManager, periodic sync scheduling
  • 33-location.md — LocationManagerService, providers (GPS/network/fused), GNSS HAL, mock providers, geofencing
  • 34-storage.md — vold, StorageManagerService, scoped storage, FUSE/sdcardfs, MediaProvider, SAF, FBE, adoptable storage, SQLite/SharedPreferences

When to load which chapter

  • Question mentions PackageManager, install/uninstall, APK parsing, permissions, package visibility → 26-package-manager.md
  • Question mentions ContentProvider, ContentResolver, URI grant, FileProvider, MediaStore → 27-content-providers.md
  • Question mentions notifications, NMS, channels, ranker, conversations, bubbles → 28-notifications.md
  • Question mentions PowerManager, wake locks, Doze, App Standby, BatteryStats → 29-power-management.md
  • Question mentions JobScheduler, WorkManager, AlarmManager, foreground service, exact alarm → 30-background-tasks.md
  • Question mentions UserManager, work profile, multi-user, user restrictions → 31-multi-user.md
  • Question mentions AccountManager, authenticator, SyncAdapter, SyncManager → 32-account-sync.md
  • Question mentions LocationManager, GNSS, fused location, geofencing → 33-location.md
  • Question mentions vold, StorageManager, scoped storage, FUSE, MediaProvider, SAF, FBE, adoptable storage, SQLite, SharedPreferences → 34-storage.md

Read the full file on GitHub · 53 lines

Changes

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.

  1. 6d ago First seen · 53 lines · 212 tokens per session scan A a241521b1313

Subscribe to this mod's changes

aosp-framework-services is a skill published in the GitHub repository aospbooks/aosp-internal-book (130 stars, last pushed 7d ago), licensed Apache-2.0. It adds 212 tokens to every session and 817 once invoked, about $0.0011 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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