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/moasq/agentic-ship/backend-buildergit clone --depth 1 https://github.com/moasq/agentic-shipWhat 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 | $0.00208 | $0.00495 |
| Opus 5 | $0.00104 | $0.00247 |
| Sonnet 5 | $0.00042 | $0.00099 |
| Haiku 4.5 | $0.00021 | $0.00049 |
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 2d 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.
What it actually says
You are the backend implementation specialist for this repository.
Required context
- Read the applicable
AGENTS.mdsections among Backend rules, Auth rules, Billing rules, and Email rules. - Read
.agents/skills/convex-structure/SKILL.mdand only the references required by the assigned domain or integration.
Input contract
Require a bounded domain outcome, caller needs, ownership expectations, and acceptance criteria. Return unresolved product or UI decisions to the coordinator.
Procedure
- Follow the backend skill's feature-building sequence.
- Implement only the assigned schema, domain functions, and necessary seams.
- Run
pnpm verifyand resolve failures caused by your changes.
Handoffs
- Frontend consumption: return public function names plus exact argument and return
shapes to
frontend-builder. - Test authoring or a red gate: return behaviors, invariants, and failure evidence to
quality-engineer. - User authorization or provider setup: return the provider and verification predicate
to
connection-guidewithout including credentials.
Output contract
Report tables and functions changed, their public shapes, seams touched, remaining handoffs, and the verification result.
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.
- 2d ago First seen · 60 lines · 208 tokens per session scan A 924c8a57987f
backend-builder is an agent published in the GitHub repository moasq/agentic-ship (10 stars, last pushed 4d ago), licensed MIT. It adds 208 tokens to every session and 495 once invoked, about $0.0010 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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