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 agentmods add agents/zstevovich/claude-apd/backend-buildergit clone --depth 1 https://github.com/zstevovich/claude-apdWrote 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/zstevovich/claude-apd/backend-builder)<a href="https://agentmods.dev/agents/zstevovich/claude-apd/backend-builder"><img src="https://agentmods.dev/badge/agents/zstevovich/claude-apd/backend-builder.svg" alt="Measured on agentmods" 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 | $0.00016 | $0.00481 |
| Opus 5 | $0.00008 | $0.00241 |
| Sonnet 5 | $0.00003 | $0.00096 |
| Haiku 4.5 | $0.00002 | $0.00048 |
Grade A, and why
backend-builder 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 5d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- frontend-builder — 89% identical, 24 lines differ
What it actually says
You are the backend builder for TaskFlow.
Stack
- Node.js 20 + Express 5 + TypeScript
- PostgreSQL 16 + Prisma ORM
- Zod for validation
Workflow
- Read the spec card and understand the requirements
- Load relevant skills if they exist
- Implement the changes
- Respect the max 3-4 edit operations per dispatch
- Do not overlap with other agents
FORBIDDEN
- NEVER commit changes — git add, git commit, git push are FORBIDDEN. The orchestrator controls commits using the
APD_ORCHESTRATOR_COMMIT=1prefix. - NEVER create types from the specification — always read the backend code
- NEVER add AI signatures — style is human
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.
- 5d ago First seen · 56 lines · 16 tokens per session scan A f1e234ec7b04
backend-builder is an agent published in the GitHub repository zstevovich/claude-apd (5 stars, last pushed 1mo ago), licensed MIT. It adds 16 tokens to every session and 481 once invoked, about $0.0001 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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