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 mikeparcewski/wicked-garden --skill backendgit clone --depth 1 https://github.com/mikeparcewski/wicked-gardenWrote 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/mikeparcewski/wicked-garden/backend)<a href="https://agentmods.dev/skills/mikeparcewski/wicked-garden/backend"><img src="https://agentmods.dev/badge/skills/mikeparcewski/wicked-garden/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/mikeparcewski/wicked-garden/backend"><img src="https://agentmods.dev/badge/skills/mikeparcewski/wicked-garden/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 | $0.00064 | $0.00600 |
| Opus 5 | $0.00032 | $0.00300 |
| Sonnet 5 | $0.00013 | $0.00120 |
| Haiku 4.5 | $0.00006 | $0.00060 |
Grade A, and why
wicked-garden-engineering-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 9d 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 — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backend Skill
Specialized backend engineering guidance for APIs, databases, and server-side systems.
When to Use
- Designing APIs (REST, GraphQL)
- Database schema or query questions
- Server-side architecture
- Data modeling
- Authentication and authorization
- Scalability and performance
- User says "backend", "API", "database", "server"
Key Focus Areas
API Design
- RESTful conventions (resources, methods, status codes)
- GraphQL schema design
- API versioning strategies
- Request/response validation
- Error handling and messaging
- Pagination and filtering
- Rate limiting
Database Patterns
- Schema design and normalization
- Indexing strategies
- Query optimization
- Transaction management
- Connection pooling
- Migration best practices
- N+1 query prevention
Data Modeling
- Entity definition
- Relationship modeling (1:1, 1:N, N:M)
- Data types and constraints
- Validation rules
- Audit trails
Authentication & Authorization
- Password hashing (bcrypt, argon2)
- JWT or session management
- OAuth2 / OIDC patterns
- RBAC (Role-Based Access Control)
- API key management
Performance & Scalability
- Query optimization and EXPLAIN plans
- Caching strategies (Redis, memcached)
- Background jobs (Celery, Bull)
- Database read replicas
- Horizontal scaling
Integration Patterns
- External API resilience (retry, timeout, circuit breaker)
- Webhook handling with retry
- Message queue patterns
- Idempotency for critical operations
Review Process
Use comprehensive checklists for:
- API quality (REST conventions, validation, versioning)
- Database quality (schema, indexes, transactions)
- Security (auth, validation, injection prevention)
See refs/checklists.md for detailed checklists, anti-patterns, and output templates.
Code Patterns
Common backend patterns for:
- API endpoints with auth and validation
- Query optimization and N+1 prevention
- Authentication and authorization
- External API integration with resilience
- Caching strategies
What ships with it
2 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.
- 9d ago First seen · 103 lines · 64 tokens per session scan A 34688876a873
wicked-garden-engineering-backend is a skill published in the GitHub repository mikeparcewski/wicked-garden (9 stars, last pushed today), licensed MIT. It adds 64 tokens to every session and 600 once invoked, about $0.0003 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 2026-08-31.
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