tt

tt is a skill for Claude Code from tonydzi/second-brain-starter-kit. It costs 108 tokens per session (3,330 once invoked), scanned A, original, MIT.

A post-build quality check for a newly created or changed tool, script, workflow, or other mechanism. It runs the real thing, deliberately tests failure, collects proof such as logs or counters, fixes problems, and gives an evidence-based verdict.

In plain words
What is it for?
Use it immediately after building or editing something that is meant to perform an action, to verify its scope, behavior, failures, and final result.
Why use it?
It catches incomplete or non-working work before it is called finished, rather than relying on a quick visual check.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions Codex.

Part of the second-brain-skills plugin — 100 skills shipped together

Good fit Use it immediately after building or editing something that is meant to perform an action, to verify its scope, behavior, failures, and final result.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tonydzi/second-brain-starter-kit/tt
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.

Any agent
npx skills add tonydzi/second-brain-starter-kit --skill tt
Clone the repo
git clone --depth 1 https://github.com/tonydzi/second-brain-starter-kit

Made for: Claude Code.

Or install second-brain-skills, the plugin that ships this one along with the rest of its 100 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 tt

README.md
[![agentmods](https://agentmods.dev/badge/skills/tonydzi/second-brain-starter-kit/tt/github.svg)](https://agentmods.dev/skills/tonydzi/second-brain-starter-kit/tt)
Your own site
<a href="https://agentmods.dev/skills/tonydzi/second-brain-starter-kit/tt"><img src="https://agentmods.dev/badge/skills/tonydzi/second-brain-starter-kit/tt/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for tt

Your own site · 80×15
<a href="https://agentmods.dev/skills/tonydzi/second-brain-starter-kit/tt"><img src="https://agentmods.dev/badge/skills/tonydzi/second-brain-starter-kit/tt.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 108 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,330 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00108 $0.03330
Opus 5 $0.00054 $0.01665
Sonnet 5 $0.00022 $0.00666
Haiku 4.5 $0.00011 $0.00333

Measured today against content hash 1afd33780095, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

tt 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.

skills/tt/SKILL.md · 136 lines

How it starts

The opening of the file, as written. The whole thing — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/tt — the quality gate right after building

🧒 When reporting to a non-technical operator: end with a short "In plain words" recap in their language (standing rule [[eli5-always]]). Only in the message TO them — never inside artifacts.

This is not a retrospective. Retro = packaging the whole session at the end. /tt = a narrow check of the one thing we just built, while the context is hot. The pain that created it (2026-06-25): "we built it, said 'done', moved on — and it was only 2/3 finished." /tt catches that BEFORE the word "done".

When: immediately after building/editing a skill · script · routine · hook · vault pipeline · mechanism note — anything that is supposed to DO something. Not for conversational replies and not for trivial text edits.

Boundary vs neighbors: /1 = is the SYSTEM alive after a crash; a browser verify = does the APP work; /tt = does the exact thing we just built work.


Step 0 — RECALL the scope (what did we actually change)

Not from memory — from facts. List what this task really created/touched:

  • fresh/modified files: ~/.claude/skills, ~/.claude (memory/CLAUDE.md/hooks/scheduled-tasks), $IMPORTS_ROOT, vault notes;
  • quick anchor: python "$IMPORTS_ROOT/retro_inventory.py" 1 (the same inventory the retro skill uses) OR simply list what you edited in THIS session.
  • Take only what belongs to the CURRENT task (ignore other machines' fleet edits — not ours, see [[session-machine-tagging]]).
  • RECALL existing knowledge on the topic (a gate born from a real miss on 2026-07-04: we fixed a pipeline without checking memory first and nearly duplicated a parallel session's work): before running/fixing, pull up what is ALREADY known — grep the memory folder + semantic search + grep the vault for the changed area. A parallel session may have already done/documented it ([[capture-rules-into-bible]] → RECALL-before-activity).

Step 1 — RUN it live (on real data, not in theory)

Run the thing for real on real data and show actual output:

  • a skill → execute its procedure by hand right here;
  • a script → run it (read-only/dry-run if it has side effects);
  • a routine/hook → trigger it manually or verify it actually fires (not "it should");
  • a rule note → check that links/slugs resolve and the frontmatter is valid. "Works in theory" ≠ proven. You need live output.

Read the full file on GitHub · 136 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. today First seen · 136 lines · 108 tokens per session scan A 1afd33780095

Subscribe to this mod's changes

tt is a skill published in the GitHub repository tonydzi/second-brain-starter-kit (6 stars, last pushed today), licensed MIT. It adds 108 tokens to every session and 3,330 once invoked, about $0.0005 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 2026-09-09.

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