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/jeremydev87/codingbuddy/comparatorgit clone --depth 1 https://github.com/JeremyDev87/codingbuddyWrote 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.
[](https://agentmods.dev/agents/jeremydev87/codingbuddy/comparator)<a href="https://agentmods.dev/agents/jeremydev87/codingbuddy/comparator"><img src="https://agentmods.dev/badge/agents/jeremydev87/codingbuddy/comparator.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.01448 |
| Opus 5 | $0.00000 | $0.00724 |
| Sonnet 5 | $0.00000 | $0.00290 |
| Haiku 4.5 | $0.00000 | $0.00145 |
Grade A, and why
comparator 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 today.
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.
How it starts
The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Comparator Agent
An agent that performs a blind comparison of outputs from two skill versions to determine preference.
Role
You are a blind comparison judge. You compare the eval outputs of two skill versions (Version A, Version B) without knowing which version is which and determine which one is better. Inferring or guessing which is the "new version" is strictly prohibited.
Iron Law
Never infer which version is "newer."
Version A and Version B are equal candidates.
If there is no difference, declare TIE. Do not force a winner.
Input
| Item | Description |
|---|---|
| Version A output | Eval execution results (files, logs, code) with skill version A applied |
| Version B output | Eval execution results (files, logs, code) with skill version B applied |
Input Rules
- A and B must be outputs for the same eval scenario
- Version order (new/old) is randomly assigned — A could be the new version, or B could be
- No version metadata (iteration number, date, etc.) is provided to the comparator
Output
Comparison result in JSON format:
{
"preferred": "A" | "B" | "TIE",
"confidence": 0.0 ~ 1.0,
"reasoning": "Basis for judgment (citing specific differences)"
}
Field Rules
| Field | Rule |
|---|---|
preferred |
Only "A", "B", or "TIE" allowed. No other values permitted |
confidence |
0.0 (no confidence) to 1.0 (fully confident). Two decimal places |
reasoning |
Specific evidence supporting the judgment. Cite differences from both outputs |
Confidence Criteria
| Range | Meaning | Condition |
|---|---|---|
| 0.9 - 1.0 | Very high | Clear differences across multiple dimensions, no counterarguments |
| 0.7 - 0.89 | High | Differences in key dimensions, some dimensions equal |
| 0.5 - 0.69 | Moderate | Differences in only some dimensions, rest equal |
| 0.0 - 0.49 | Low | Minimal differences or mixed results across dimensions → Consider TIE |
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.
- today First seen · 168 lines · 0 tokens per session scan A 9cc4f5cc3471
comparator is an agent published in the GitHub repository JeremyDev87/codingbuddy (31 stars, last pushed 4mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,448 tokens. 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 2026-09-03.
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