Borrowing it
Nothing to install: this file belongs to qingyu321/Little-Claude. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/qingyu321/Little-Claude/main/.claude/commands/trellis/check-backend.mdgit clone --depth 1 https://github.com/qingyu321/Little-ClaudeWrote 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/commands/qingyu321/little-claude/check-backend)<a href="https://agentmods.dev/commands/qingyu321/little-claude/check-backend"><img src="https://agentmods.dev/badge/commands/qingyu321/little-claude/check-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/commands/qingyu321/little-claude/check-backend"><img src="https://agentmods.dev/badge/commands/qingyu321/little-claude/check-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 | $0.00000 | $0.00157 |
| Opus 5 | $0.00000 | $0.00078 |
| Sonnet 5 | $0.00000 | $0.00031 |
| Haiku 4.5 | $0.00000 | $0.00016 |
Grade A, and why
check-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.
This is a copy
100% identical to check-backend — 0 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.
What it actually says
Check if the code you just wrote follows the backend development guidelines.
Execute these steps:
- Run
git statusto see modified files - Read
.trellis/spec/backend/index.mdto understand which guidelines apply - Based on what you changed, read the relevant guideline files:
- Database changes →
.trellis/spec/backend/database-guidelines.md - Error handling →
.trellis/spec/backend/error-handling.md - Logging changes →
.trellis/spec/backend/logging-guidelines.md - Type changes →
.trellis/spec/backend/type-safety.md - Any changes →
.trellis/spec/backend/quality-guidelines.md
- Database changes →
- Review your code against the guidelines
- Report any violations and fix them if found
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 · 14 lines · 0 tokens per session scan A 4e81a28d681e
check-backend is a command published in the GitHub repository qingyu321/Little-Claude (21 stars, last pushed 15d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 157 tokens. A static security scan graded it A with 0 findings. It is 100% identical to check-backend, differing in 0 lines, and is treated as a copy.
Other commands, from other repositories
fastapi-review
Review a FastAPI application for architecture, async correctness, dependency injection, Pydantic schemas, security, performance, and testability.
pn-audit-data
Design or review database schema — normalization, indexing strategy, migration plan, and data model decisions. Surgical command for database design. Use standalone or as part of pn-backend-audit.
pn-audit-api
Surgical API design review — REST conventions, status codes, response shapes, validation, and schema leaks. Use standalone or as part of pn-backend-audit. Outputs a scored fix roadmap.
pn-audit-security
OWASP-guided security review — auth posture, input validation, secrets, CORS, JWT, rate limiting. Surgical command for backend security. Use standalone or as part of pn-backend-audit.
delegate-review
Run OCR in delegation mode — OCR handles file selection and rules, the host agent performs the actual review.
review
Review a skill for quality before merge.