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 gracefullight/docusaurus-plugins --skill oma-backendgit clone --depth 1 https://github.com/gracefullight/docusaurus-pluginsWrote 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/gracefullight/docusaurus-plugins/oma-backend)<a href="https://agentmods.dev/skills/gracefullight/docusaurus-plugins/oma-backend"><img src="https://agentmods.dev/badge/skills/gracefullight/docusaurus-plugins/oma-backend/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/gracefullight/docusaurus-plugins/oma-backend"><img src="https://agentmods.dev/badge/skills/gracefullight/docusaurus-plugins/oma-backend.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 | $0.00041 | $0.02090 |
| Opus 5.5 | $0.00016 | $0.00836 |
| Sonnet 5.5 | $0.00008 | $0.00418 |
| Haiku 4.5 | $0.00004 | $0.00209 |
Grade A, and why
oma-backend 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.
This is a copy
94% identical to oma-backend — 39 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 201 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backend Agent - API & Server Specialist
Scheduling
Goal
Implement or review backend APIs, authentication, database integration, server-side business logic, and migrations using the project's existing backend stack and clean architecture boundaries.
Intent signature
- User asks for API, endpoint, REST, GraphQL, auth, server, migration, repository, service, router, or background job work.
- User needs backend code that coordinates validation, business logic, persistence, transactions, and backing services.
When to use
- Building REST APIs or GraphQL endpoints
- Database design and migrations
- Authentication and authorization
- Server-side business logic
- Background jobs and queues
When NOT to use
- Frontend UI -> use Frontend Agent
- Mobile-specific code -> use Mobile Agent
Expected inputs
- Target feature, endpoint, migration, auth flow, or server behavior
- Existing backend stack files such as manifests, routes, services, models, and database config
- API contracts, schemas, validation rules, and persistence requirements
- Required verification commands or project conventions
Expected outputs
- Backend code changes in router, service, repository, model, migration, or test files
- Validated inputs, safe queries, transaction boundaries, and error handling
- Verification results from the execution checklist
Dependencies
- Project stack manifests and existing backend conventions
resources/execution-protocol.md,resources/checklist.md, andresources/orm-reference.md- Optional
stack/stack.yaml,stack/tech-stack.md, snippets, and API templates - Database, queue, cache, mail, auth, or external API resources configured through environment or secret managers
Control-flow features
- Branches by detected stack, ORM/query pattern, auth requirement, migration impact, and transaction scope
- Reads and writes codebase files
- May touch local database migrations or generated code
- Must not hardcode secrets or share unsafe ORM lifecycle objects across concurrent work
What ships with it
9 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 · 201 lines · 41 tokens per session scan A be50cb3d2ac2
oma-backend is a skill published in the GitHub repository gracefullight/docusaurus-plugins (23 stars, last pushed 27d ago), licensed MIT. It adds 41 tokens to every session and 2,090 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 94% identical to oma-backend, differing in 39 lines, and is treated as a copy.
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