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 skills add zookanalytics/gc-toolkit --skill session-titlegit clone --depth 1 https://github.com/zookanalytics/gc-toolkitWrote 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/skills/zookanalytics/gc-toolkit/session-title)<a href="https://agentmods.dev/skills/zookanalytics/gc-toolkit/session-title"><img src="https://agentmods.dev/badge/skills/zookanalytics/gc-toolkit/session-title/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.
<a href="https://agentmods.dev/skills/zookanalytics/gc-toolkit/session-title"><img src="https://agentmods.dev/badge/skills/zookanalytics/gc-toolkit/session-title.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00068 | $0.01714 |
| Opus 5.5 | $0.00027 | $0.00686 |
| Sonnet 5.5 | $0.00014 | $0.00343 |
| Haiku 4.5 | $0.00007 | $0.00171 |
Grade A, and why
session-title 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 174 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Session Title
Set, view, suggest, or auto-rotate the title for the current session.
Applies to canonical agents (mechanik, deacon) and to any ad-hoc
session the operator spawns. The title shows up in gc session list,
the operator's session popup, and the dashboard, so a descriptive title
helps the operator see at a glance what the session is on.
Operator-initiated only. Do not invoke this skill unless the operator asks for it. The agent's own judgment that the title is stale or noisy is not a trigger; surface the suggestion in conversation and let the operator decide.
The convention side of self-renaming — canonicals rotating as focus shifts — lives in each agent's own prompt, not gated by this skill.
Detect the form
This skill has four forms. Pick one based on what the operator typed:
- Auto-rename (default no-args) —
/session-titlewith no args, or a bare "rename this session" / "rename mechanik" with no value supplied. Propose nothing — pick a forward-focus title from recent context and apply it directly. - Set —
/session-title <text>, or "rename this session to ", "set the title to ", "rename mechanik to ". Apply the operator's text verbatim. - View —
/session-title --view, or "what's my title", "what's my session title". Return the current title; do not rename. - Suggest —
/session-title --suggest, or "suggest a title", "what should this session be called?". Propose a title from recent context and wait for the operator to confirm, edit, or skip before applying.
The distinction between Auto-rename and Suggest is the friction level: Auto-rename is the bread-and-butter operator gesture and must be frictionless; Suggest is opt-in for when the operator wants to see the proposal first.
Auto-rename
No-args is the default. Look at recent context (see Title generation below), choose a forward-focus title, and apply it directly:
gc session rename "$GC_SESSION_ID" "<title text>"
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.
- 1mo ago First seen · 174 lines · 68 tokens per session scan A 15d1c8d3a52f
session-title is a skill published in the GitHub repository zookanalytics/gc-toolkit (5 stars, last pushed today), licensed MIT. It adds 68 tokens to every session and 1,714 once invoked, about $0.0003 per session on Opus 5.5. 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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