rdf-engineer

An implementation agent that follows test-driven development and reads a project’s governance rules before coding.

In plain words
What is it for?
Use it to implement phases of a development plan, especially when the work is dispatched by an execution coordinator.
Why use it?
It provides a consistent coding role for plan execution while respecting project-specific conventions and writing tests before implementation.

Agent

Part of the rdf plugin — 40 commands, 8 agents, 6 hooks shipped together

Install

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.

agentmods
npx agentmods add agents/rfxn/rdf/engineer
Clone the repo
git clone --depth 1 https://github.com/rfxn/rdf

Or install rdf, the plugin that ships this one along with the rest of its 40 commands, 8 agents, 6 hooks.

Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,763 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00030 $0.01763
Opus 5 $0.00015 $0.00881
Sonnet 5 $0.00006 $0.00353
Haiku 4.5 $0.00003 $0.00176

Measured 3d ago against content hash 8f2262502f77, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

rdf-engineer 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 3d 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.

adapters/claude-plugin/output/agents/engineer.md · 197 lines

The source is not reproduced here

Licensed GPL-2.0

The repository is licensed GPL-2.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

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.

  1. 3d ago First seen · 197 lines · 30 tokens per session scan A 8f2262502f77

Subscribe to this mod's changes

rdf-engineer is an agent published in the GitHub repository rfxn/rdf (17 stars, last pushed 15d ago), licensed GPL-2.0. It adds 30 tokens to every session and 1,763 once invoked, about $0.0002 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 2026-08-30.

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