til

til is a skill for Claude Code, Codex from aka-kika/akakika-skills. It costs 91 tokens per session (1,199 once invoked), scanned A, original, MIT.

A one-topic teaching guide based on the current coding session or project. TDD means test-driven development, but this add-on teaches whichever useful concept best fits the session.

In plain words
What is it for?
Use it to learn one relevant concept in plain English after or during a coding session.
Why use it?
It explains terms, mistakes, tools, or code patterns you may have encountered without fully understanding them.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Not installable: its command points at a path on the author’s own machine, so it runs nowhere else. The line is /Users/kika_hub/_KIKA_MAIN/Kika.

Good fit Use it to learn one relevant concept in plain English after or during a coding session.

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Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code, Codex.

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 til

README.md
[![agentmods](https://agentmods.dev/badge/skills/aka-kika/akakika-skills/til/github.svg)](https://agentmods.dev/skills/aka-kika/akakika-skills/til)
Your own site
<a href="https://agentmods.dev/skills/aka-kika/akakika-skills/til"><img src="https://agentmods.dev/badge/skills/aka-kika/akakika-skills/til/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 til

Your own site · 80×15
<a href="https://agentmods.dev/skills/aka-kika/akakika-skills/til"><img src="https://agentmods.dev/badge/skills/aka-kika/akakika-skills/til.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 91 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,199 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 $0.00091 $0.01199
Opus 5 $0.00046 $0.00600
Sonnet 5 $0.00018 $0.00240
Haiku 4.5 $0.00009 $0.00120

Measured 7d ago against content hash 404e19ed3ce4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

til 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 7d 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/session-rituals/til/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

til

The user is a builder who ships real things without formal CS background. Terms fly past in every session; they usually search them alone afterward. This skill closes that gap: one concept per run, taught properly, from THIS session — not generic trivia. Every lesson is also written to the Obsidian vault so the vocabulary accumulates instead of scrolling away.

The contract: chat AND vault, same turn

The lesson always lands in two places in the same turn:

  1. The full lesson text in chat, where the user reads it now.
  2. The identical text as a note in the vault, where it accumulates.

Never chat-only. Never save-only. Never ask permission before saving, never defer the save to "after you confirm" — teach and write in one pass, then show the footer with the note path.

Picking the one thing

Priority order — take the first that applies:

  1. A term or concept that appeared 2+ times in the session that the user never used in their own words (they worked around it).
  2. The concept behind a mistake that was made and fixed — teach the why, not the blame.
  3. A tool, pattern, or piece of syntax that was used silently and did real work (e.g. a flag, an atomic write, a data structure choice).
  4. Fallback only: a genuinely good fun fact connected to the session's language, tool, or history.

One thing. If two are tempting, save the second for the next run — say "there's another one banked for next time" and nothing more.

Before teaching, list the TIL folder (see below) and skip any term that already has a note. If the top pick is already there, drop to the next priority.

How to teach it

  • Name the term first, exactly as it's written, so it can be searched.
  • One or two short paragraphs. Plain English. Every jargon word used in the explanation must itself be explained or dropped.
  • Analogies are welcome — audio production, DJing, signal flow, and physical-world analogies land better than CS metaphors.
  • End with one line: why it mattered in THIS session specifically.
  • Close with: "Want the deeper version?" — and only expand if asked. The deep version may go longer, show code, and link docs.

Read the full file on GitHub · 124 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. 7d ago Changed · +65 lines · +1 tokens per session 404e19ed3ce4
  2. 11d ago First seen · 59 lines · 90 tokens per session scan A 1237aae6682c

Subscribe to this mod's changes

til is a skill published in the GitHub repository aka-kika/akakika-skills (10 stars, last pushed yesterday), licensed MIT. It adds 91 tokens to every session and 1,199 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 2026-08-31.