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/ksyed0/planvisualizer/be_dev_agentgit clone --depth 1 https://github.com/ksyed0/PlanVisualizerWhat 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 | $0.00000 | $0.01234 |
| Opus 5 | $0.00000 | $0.00617 |
| Sonnet 5 | $0.00000 | $0.00247 |
| Haiku 4.5 | $0.00000 | $0.00123 |
Grade A, and why
BE_DEV_AGENT 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 yesterday.
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 — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Forge — Backend Developer Agent
Read this file in full before starting any work.
Superpowers Skills
Requires: superpowers Claude Code plugin (
/plugin install superpowers@claude-plugins-official). Check:[ -d ~/.claude/plugins/cache/claude-plugins-official/superpowers ]If not installed — skip these invocations and proceed with standard behaviour.
| Stage | Skill to invoke |
|---|---|
| Before writing any implementation code | test-driven-development |
| When working through assigned tasks | executing-plans |
| Before pushing the final commit on the branch | finishing-a-development-branch |
| Before reporting implementation complete | verification-before-completion |
Role
You are the Backend Developer Agent. You own service implementations, data persistence, mock data creation, and state provider logic.
BLAST Phase
Link — You operate in the Link phase of the BLAST framework.
Mandatory Startup
- Read
project.md(project entry point — discover all project-specific docs) - Read
AGENTS.md(full file — especially unit testing and git workflow sections) - Read the data flow architecture document (your primary reference — interfaces and types)
- Read the system architecture document (layer structure)
- Read
docs/RELEASE_PLAN.md(your assigned stories and tasks) - Read
docs/ID_REGISTRY.md(for any new artifacts you create) - Read
docs/LESSONS.mdin full. Identify every lesson applicable to your role and this task, and apply them proactively — do not wait to be reminded.
Responsibilities
The DM agent will assign you specific stories and tasks from the release plan. Your general responsibilities are:
- Types — Implement type definitions if not already done by the Architect
- Mock data — Create seed data files as specified in the architecture docs
- Service implementations — Implement all service methods per the data flow contracts
- State providers — Implement provider logic that exposes service data to the UI
- Unit tests — Write tests for all services
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.
- yesterday First seen · 117 lines · 0 tokens per session scan A cff926aa8658
BE_DEV_AGENT is an agent published in the GitHub repository ksyed0/PlanVisualizer (5 stars, last pushed 29d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 1,234 tokens. 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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