ferrox-eval-planner

ferrox-eval-planner is an agent for coding agents from FerroxLabs/ferrox-factory. It costs 72 tokens per session (1,674 once invoked), scanned A, a copy of gsd-eval-planner, MIT.

An agent that designs a structured testing and monitoring plan for an AI system. It writes evaluation, safety, and production-monitoring sections in an AI-SPEC.md file.

In plain words
What is it for?
It is for defining evaluation dimensions, failure cases, rubrics, measurement methods, tracing defaults, and reference datasets for an AI phase.
Why use it?
It turns vague concerns about AI quality and safety into specific checks, pass or fail rules, and review methods.

Agent

Part of the ferrox-core plugin — 81 skills, 42 agents, 7 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/ferroxlabs/ferrox-factory/ferrox-eval-planner
Clone the repo
git clone --depth 1 https://github.com/FerroxLabs/ferrox-factory

Or install ferrox-core, the plugin that ships this one along with the rest of its 81 skills, 42 agents, 7 hooks.

Wrote 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.

agentmods badge for ferrox-eval-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/ferroxlabs/ferrox-factory/ferrox-eval-planner.svg)](https://agentmods.dev/agents/ferroxlabs/ferrox-factory/ferrox-eval-planner)
Your own site
<a href="https://agentmods.dev/agents/ferroxlabs/ferrox-factory/ferrox-eval-planner"><img src="https://agentmods.dev/badge/agents/ferroxlabs/ferrox-factory/ferrox-eval-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 72 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,674 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 91% copy Near-identical to another mod 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 $0.00072 $0.01674
Opus 5 $0.00036 $0.00837
Sonnet 5 $0.00014 $0.00335
Haiku 4.5 $0.00007 $0.00167

Measured 5d ago against content hash b6aa70d9a2f0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ferrox-eval-planner 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 5d 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.

Origin

This is a copy

91% identical to gsd-eval-planner — 14 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agents/ferrox-eval-planner.md · 155 lines

How it starts

The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<required_reading> Read ~/.claude/ferrox-core/references/ai-evals.md before planning. This is your evaluation framework. </required_reading>

If prompt contains <required_reading>, read every listed file before doing anything else.

<execution_flow>

Always include: safety (user-facing) and task completion (agentic).

Format each rubric as:

PASS: {specific acceptable behavior in domain language} FAIL: {specific unacceptable behavior in domain language} Measurement: Code / LLM Judge / Human

Assign measurement approach per dimension:

  • Code-based: schema validation, required field presence, performance thresholds, regex checks
  • LLM judge: tone, reasoning quality, safety violation detection — requires calibration
  • Human review: edge cases, LLM judge calibration, high-stakes sampling

Mark each dimension with priority: Critical / High / Medium.

If detected: use it as the tracing default.

If nothing detected, apply opinionated defaults:

Concern Default
Tracing / observability Arize Phoenix — open-source, self-hostable, framework-agnostic via OpenTelemetry
RAG eval metrics RAGAS — faithfulness, answer relevance, context precision/recall
Prompt regression / CI Promptfoo — CLI-first, no platform account required
LangChain/LangGraph LangSmith — overrides Phoenix if already in that ecosystem

Include Phoenix setup in AI-SPEC.md:

# pip install arize-phoenix opentelemetry-sdk
import phoenix as px
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider

px.launch_app()  # http://localhost:6006
provider = TracerProvider()
trace.set_tracer_provider(provider)
# Instrument: LlamaIndexInstrumentor().instrument() / LangChainInstrumentor().instrument()

Read the full file on GitHub · 155 lines

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. 5d ago First seen · 155 lines · 72 tokens per session scan A b6aa70d9a2f0

Subscribe to this mod's changes

ferrox-eval-planner is an agent published in the GitHub repository FerroxLabs/ferrox-factory (22 stars, last pushed 1mo ago), licensed MIT. It adds 72 tokens to every session and 1,674 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to gsd-eval-planner, differing in 14 lines, and is treated as a copy.

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