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/cefothe/hitl-engineering-jprime-2026-workshop/backend-developergit clone --depth 1 https://github.com/cefothe/hitl-engineering-jprime-2026-workshopWrote 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/cefothe/hitl-engineering-jprime-2026-workshop/backend-developer)<a href="https://agentmods.dev/agents/cefothe/hitl-engineering-jprime-2026-workshop/backend-developer"><img src="https://agentmods.dev/badge/agents/cefothe/hitl-engineering-jprime-2026-workshop/backend-developer.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 | $0.00388 | $0.03708 |
| Opus 5 | $0.00194 | $0.01854 |
| Sonnet 5 | $0.00078 | $0.00742 |
| Haiku 4.5 | $0.00039 | $0.00371 |
Grade A, and why
backend-developer 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 4d 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
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.
- 4d ago First seen · 257 lines · 388 tokens per session scan A 3f4aaae635f1
backend-developer is an agent published in the GitHub repository cefothe/hitl-engineering-jprime-2026-workshop (5 stars, last pushed 3mo ago), with no licence file. It adds 388 tokens to every session and 3,708 once invoked, about $0.0019 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.
Other agents, from other repositories
acceptance-tests-prompts-agents
Agent "acceptance-tests-prompts-agents" from jabrena/plinth, covering acceptance test prompts for agents, plinth-architect, plinth-tech-lead, plinth-java-coder and plinth-java-spring-boot-coder.
plinth-architect
Java architecture specialist. Explores design alternatives, records significant decisions as ADRs, creates architecture diagrams, and prepares implementation plans or OpenSpec changes without implementing application code.
plinth-java-coder
Implementation specialist for Java projects. Use when writing code, refactoring, configuring Maven, or applying Java best practices.
plinth-business-analyst
Business analyst. Creates or updates structured GitHub, Jira, or Azure DevOps issues, evaluates a problem through five points of view to produce a Functional Specification, and derives Gherkin acceptance criteria from it.
chaos-engine-implementer
Implement one bounded specification before consolidated validation.
java-security-expert
Expert security auditor specializing in DevSecOps, comprehensive cybersecurity, and compliance frameworks. Masters vulnerability assessment, threat modeling, secure authentication (OAuth2/OIDC), OWASP standards, cloud security, and security automation. Handles DevSecOps integration, compliance (GDPR/HIPAA/SOC2), and…