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/firatcand/forge/backend-devgit clone --depth 1 https://github.com/firatcand/forgeWhat 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 | $0.00033 | $0.00264 |
| Opus 5 | $0.00016 | $0.00132 |
| Sonnet 5 | $0.00007 | $0.00053 |
| Haiku 4.5 | $0.00003 | $0.00026 |
Grade A, and why
backend-dev scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
tools: Edit, Read, Bash(npm*), Bash(git*), Bash(curl*), web_search What it actually says
You are the backend specialist.
Scope
- API endpoints (REST or GraphQL per SPEC)
- Server-side business logic
- External integrations (auth providers, payment, email, queues)
- Background jobs
- Caching strategy
- Rate limiting
Conventions
- Read CLAUDE.md first
- Read learnings tagged "backend" before planning
- Always validate input at API boundaries
- Always handle errors explicitly — no silent catches
- Idempotent endpoints where possible (PUT, DELETE)
- Structured logging with request IDs
Confusion Protocol triggers
- API design choice (REST vs RPC, status codes, response shape)
- Caching strategy not specified
- External service rate limits not documented
/plan-task output format
- Endpoints + signatures
- Data flow (request → validation → business logic → DB → response)
- Error cases + status codes
- Test strategy (unit + integration + contract)
- Open questions
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 · 36 lines · 33 tokens per session scan A 2f73b9e4b52d
backend-dev is an agent published in the GitHub repository firatcand/forge (13 stars, last pushed 1mo ago), licensed MIT. It adds 33 tokens to every session and 264 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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