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 ronmkr/PromptBook --skill tinystruct-patternsgit clone --depth 1 https://github.com/ronmkr/PromptBookWrote 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/ronmkr/promptbook/tinystruct-patterns)<a href="https://agentmods.dev/skills/ronmkr/promptbook/tinystruct-patterns"><img src="https://agentmods.dev/badge/skills/ronmkr/promptbook/tinystruct-patterns/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/skills/ronmkr/promptbook/tinystruct-patterns"><img src="https://agentmods.dev/badge/skills/ronmkr/promptbook/tinystruct-patterns.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 | $0.00099 | $0.02039 |
| Opus 5.5 | $0.00040 | $0.00816 |
| Sonnet 5.5 | $0.00020 | $0.00408 |
| Haiku 4.5 | $0.00010 | $0.00204 |
Grade A, and why
tinystruct-patterns 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 1mo 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 — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.
tinystruct Development Patterns
Architecture and implementation patterns for building modules with the tinystruct Java framework – a lightweight, high-performance framework that treats CLI and HTTP as equal citizens, requiring no main() method and minimal configuration.
Core Principle
CLI and HTTP are equal citizens. Every method annotated with @Action should ideally be runnable from both a terminal and a web browser without modification. This "dual-mode" capability is the core design philosophy of tinystruct.
When to Activate
When to Use
- Creating new
Applicationmodules by extendingAbstractApplication. - Defining routes and command-line actions using
@Action. - Handling per-request state via
Context. - Performing JSON serialization using the native
BuilderandBuilderscomponents. - Working with database persistence via
AbstractDataPOJOs. - Generating POJOs from database tables using the
generatecommand. - Implementing Server-Sent Events (SSE) for real-time push.
- Handling file uploads via multipart data.
- Making outbound HTTP requests with
URLRequestandHTTPHandler. - Configuring database connections or system settings in
application.properties. - Debugging routing conflicts (Actions) or CLI argument parsing.
How It Works
The tinystruct framework treats any method annotated with @Action as a routable endpoint for both terminal and web environments. Applications are created by extending AbstractApplication, which provides core lifecycle hooks like init() and access to the request Context.
Routing is handled by the ActionRegistry, which automatically maps path segments to method arguments and injects dependencies. For data-only services, the native Builder and Builders components should be used for JSON serialization to maintain a zero-dependency footprint. The database layer uses AbstractData POJOs paired with XML mapping files for CRUD operations without external ORM libraries.
Examples
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 204 lines · 99 tokens per session scan A eabe4efed0c4
tinystruct-patterns is a skill published in the GitHub repository ronmkr/PromptBook (2 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 99 tokens to every session and 2,039 once invoked, about $0.0004 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 2026-09-03.
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