jamie

jamie is a skill for Claude Code, Codex from drubinstein/terry. It costs 131 tokens per session (3,163 once invoked), scanned A, original, MIT.

A bug-investigation method that checks whether a reported problem can be reproduced under the reporter's exact conditions. It creates a small, repeatable test case and labels the result as confirmed, plausible, or not reproduced.

In plain words
What is it for?
Use it before fixing a bug report, especially when the problem may depend on a particular setup, input, operating system, version, or intermittent timing.
Why use it?
It separates a report that has been verified from one that is only suspected. This prevents developers from fixing the wrong problem or overlooking differences in versions, data, platforms, or timing.

Skill for Claude CodeCodex

Part of the terry plugin — 6 skills 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 skills/drubinstein/terry/jamie
Any agent
npx skills add drubinstein/terry --skill jamie
Clone the repo
git clone --depth 1 https://github.com/drubinstein/terry

Made for: Claude Code, Codex.

Or install terry, the plugin that ships this one along with the rest of its 6 skills.

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 jamie

README.md
[![agentmods](https://agentmods.dev/badge/skills/drubinstein/terry/jamie.svg)](https://agentmods.dev/skills/drubinstein/terry/jamie)
Your own site
<a href="https://agentmods.dev/skills/drubinstein/terry/jamie"><img src="https://agentmods.dev/badge/skills/drubinstein/terry/jamie.svg" alt="Measured on agentmods" height="20"></a>
Per session 131 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,163 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 $0.00131 $0.03163
Opus 5 $0.00066 $0.01581
Sonnet 5 $0.00026 $0.00633
Haiku 4.5 $0.00013 $0.00316

Measured 4d ago against content hash 1e345049d872, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

jamie 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 4d 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.

skills/jamie/SKILL.md · 209 lines

How it starts

The opening of the file, as written. The whole thing — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Jamie — replicate the report to confirm the bug

The claim · the rig · the verdict.

Jamie takes a bug report and tries to make it happen — on purpose, reliably — before anyone tries to fix it. A report is a claim, not a fact: "the app crashes when I upload a CSV" is a hypothesis until you can pull the trigger yourself. Jamie's job is to convert that claim into a minimal, reliable reproduction and stamp it with a verdict, Mythbusters-style:

  • CONFIRMED — reproduced reliably; you hold a minimal, one-command repro (and a reliability rate if it's intermittent).
  • PLAUSIBLE — reproduces only under conditions you had to discover, or a real adjacent defect exists but not the exact report.
  • BUSTED — could not reproduce after faithfully recreating the conditions and escalating. Not "there's no bug" — "the report as written doesn't reproduce" — and you say why.

The whole discipline rests on one rule: a failed reproduction is evidence about a mismatched condition, not proof the reporter is wrong. Most "can't reproduce" is one unmatched variable — the wrong version, the wrong data, the wrong platform, the wrong timing — away from a perfect repro.

Six moves:

  • The report is a claim. Turn the prose into a falsifiable statement: exact preconditions, steps, expected vs actual, and the environment it was seen in. Write down what the report doesn't say (the unstated conditions).
  • Match their world, not yours. Recreate the version they hit (checkout that release/commit, not latest), their config/flags, their data/inputs, their platform/OS/arch, locale/timezone, account/permissions/state, concurrency/scale.
  • Build the rig and capture the failure. Reproduce the full scenario until it fails, and capture the failure as an artifact (a log, a crash, a diff) — not "I think I saw it."
  • Minimize. Shrink the working repro to the smallest thing that still fails (delete-and-retest). The deliverable is a repro someone else can run in one step.
  • Quantify reliability. 100% or intermittent? Run it N times and report the rate (e.g. 7/20). Intermittent is a number, not a shrug.
  • Never bust on the first miss. Before declaring BUSTED, escalate: vary the condition you most likely mismatched, ask the reporter for the one missing variable, and check whether it's already been fixed.

Read the full file on GitHub · 209 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 209 lines · 0 tokens per session scan A 1e345049d872

Subscribe to this mod's changes

jamie is a skill published in the GitHub repository drubinstein/terry (1 stars, last pushed 2mo ago), licensed MIT. It adds 131 tokens to every session and 3,163 once invoked, about $0.0007 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 2026-08-31.

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