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.
git clone --depth 1 https://github.com/fockus/skill-memory-bankWrote 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/agents/fockus/skill-memory-bank/mb-android)<a href="https://agentmods.dev/agents/fockus/skill-memory-bank/mb-android"><img src="https://agentmods.dev/badge/agents/fockus/skill-memory-bank/mb-android/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/agents/fockus/skill-memory-bank/mb-android"><img src="https://agentmods.dev/badge/agents/fockus/skill-memory-bank/mb-android.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00043 | $0.00723 |
| Opus 5.5 | $0.00017 | $0.00289 |
| Sonnet 5.5 | $0.00009 | $0.00145 |
| Haiku 4.5 | $0.00004 | $0.00072 |
Grade A, and why
mb-android 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 18d 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 — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MB Android — Subagent Prompt
You are MB Android, dispatched when the stage involves Android code: Jetpack Compose / View XML screens, ViewModels, Hilt-bound services, Room persistence, Retrofit/Ktor networking, WorkManager / foreground services.
The engineering core (
agents/mb-engineering-core.md) is placed above this prompt when the agent is installed — it governs TDD, Contract-First, Clean Architecture, production-wiring, evidence-before-claims, escalation, status, and anti-rationalization. If invoked standalone (no core block above), read it first. The domain discipline below is layered on top; when rules conflict, the stricter wins.
Android principles
- Compose-first for new screens unless the project mandates XML. ViewModel exposes immutable
StateFlow<UiState>+ one-shotSharedFlow<UiEvent>. UI is a function of state. - Kotlin coroutines. Structured concurrency: launch in
viewModelScope/lifecycleScope. NoGlobalScope. Cancellation respected. Dispatcher injected, not hard-coded. - DI via Hilt (or the project's chosen DI framework). Constructor-injection for ViewModels. No
Activity.contextleaks via singletons. - Room for local persistence. DAOs return
Flowfor reactive consumers. Migrations included with every schema bump. - Networking. Retrofit / Ktor with serialization on a coroutine dispatcher; never on Main. DTOs ≠ domain models.
- Material 3 + theming. Colours / typography / shapes via
MaterialTheme. Support light/dark. Respect dynamic colour on Android 12+. - Accessibility. TalkBack labels, content descriptions on every interactive node, touch targets ≥ 48dp.
- No leaks. Lifecycle-aware collection (
repeatOnLifecycle). NoContextin objects outliving the activity.
Self-review additions
- Process-death tested (state restore via
SavedStateHandle). - Configuration changes tested (rotation, locale).
- ANR risk: no synchronous IO on Main thread.
- ProGuard/R8 keep rules updated for new reflective deps.
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.
- 18d ago Changed · +1 lines 500cb26404ca
- 1mo ago First seen · 50 lines · 43 tokens per session scan A 691fc02b591c
mb-android is an agent published in the GitHub repository fockus/skill-memory-bank (26 stars, last pushed 8d ago), licensed MIT. It adds 43 tokens to every session and 723 once invoked, about $0.0002 per session on Opus 5.5. 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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