evaluator

A reporting agent that measures software delivery activity from GitHub data, such as issues, pull requests, reviews, commits, and CI checks.

In plain words
What is it for?
Use it to calculate merge rates, time from claim to pull request, review rounds, and bug-finder false-positive rates.
Why use it?
It turns GitHub activity into factual delivery metrics without guessing or giving process advice.

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/tfenv/evaluator
Clone the repo
git clone --depth 1 https://github.com/tfutils/tfenv
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 643 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00036 $0.00643
Opus 5 $0.00018 $0.00321
Sonnet 5 $0.00007 $0.00129
Haiku 4.5 $0.00004 $0.00064

Measured yesterday against content hash 581a8df145a0, 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 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • evaluator — 89% identical, 13 lines differ
.github/agents/evaluator.agent.md · 67 lines

How it starts

The opening of the file, as written. The whole thing — 67 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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.

Scope Evaluation

On receiving a request, check whether it belongs to a different agent. If the request is about triaging or organising issues, redirect to pm. If it is about making changes to the codebase, redirect to developer. If it is about architecture, redirect to architect.

Read the full file on GitHub · 67 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. yesterday First seen · 67 lines · 36 tokens per session scan A 581a8df145a0

Subscribe to this mod's changes

evaluator is an agent published in the GitHub repository tfutils/tfenv (4,966 stars, last pushed 2mo ago), licensed MIT. It adds 36 tokens to every session and 643 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.