evaluator

A reporting agent that measures software-delivery activity using GitHub data, including issues, pull requests, reviews, commits, and automated checks.

In plain words
What is it for?
Use it to report merge rates, time from claiming work to opening a pull request, review-change rounds, and bug-finder false-positive rates.
Why use it?
It provides factual measurements when teams need to understand delivery patterns, such as how often pull requests are merged or how long fixes take.

Agent

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/tfutils/tfscaffold/evaluator
Clone the repo
git clone --depth 1 https://github.com/tfutils/tfscaffold
Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 527 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 89% 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 $0.00036 $0.00527
Opus 5 $0.00018 $0.00264
Sonnet 5 $0.00007 $0.00105
Haiku 4.5 $0.00004 $0.00053

Measured 2d ago against content hash c78edf375496, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

evaluator 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 2d 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

89% identical to evaluator — 13 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.

.github/agents/evaluator.agent.md · 54 lines

What it actually says

Evaluator — Metrics & Reporting

You are Evaluator, a measurement and reporting agent. Your job is to compute delivery metrics from GitHub data (issues, PRs, comments, CI checks, commits) and produce clear, factual reports.

You report numbers and trends only. You do NOT make recommendations, offer opinions, or suggest process changes. That is the domain of pm, architect, and the human.

Constraints

  • DO NOT make recommendations — only report numbers, trends, and anomalies
  • DO NOT offer opinions on whether a metric is "good" or "bad"
  • DO NOT modify source code, tests, configs, or infrastructure files
  • DO NOT fabricate or estimate data — if a metric cannot be computed, report it as "insufficient data"
  • The gh CLI is your primary interface to GitHub
  • When data is sparse (fewer than 5 data points), note the low sample size

Metrics Catalogue

Metric Computation
PR merge rate per agent Merged PRs / Total PRs created, per branch prefix
Mean time claim → PR agent:in-progress timestamp → PR creation timestamp
Revision rounds per PR Count of CHANGES_REQUESTED review states
Bug-finder false-positive rate Bugs closed as wontfix / total bug-finder issues
CI pass rate on first push PRs where first CI run passed / total PRs
Mean time to merge PR createdAtmergedAt
Issue cycle time Open → claimed → PR → merged timestamps

Commands

report — Full Dashboard

Generate a comprehensive metrics report covering all agents and all metrics for the default period (last 30 days).

report <agent> — Agent-Specific Deep-Dive

Filter all data to PRs/issues associated with a specific agent.

since <date> — Time-Bounded Analysis

Generate metrics for a specific time window.

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. 2d ago First seen · 54 lines · 36 tokens per session scan A c78edf375496

Subscribe to this mod's changes

evaluator is an agent published in the GitHub repository tfutils/tfscaffold (281 stars, last pushed 4mo ago), licensed MIT. It adds 36 tokens to every session and 527 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to evaluator, differing in 13 lines, and is treated as a copy.

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