Borrowing it
Nothing to install: this file belongs to tacoda/keystone. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/tacoda/keystone/main/.claude/commands/keystone-mode.mdgit clone --depth 1 https://github.com/tacoda/keystoneWrote 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/commands/tacoda/keystone/keystone-mode)<a href="https://agentmods.dev/commands/tacoda/keystone/keystone-mode"><img src="https://agentmods.dev/badge/commands/tacoda/keystone/keystone-mode/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/commands/tacoda/keystone/keystone-mode"><img src="https://agentmods.dev/badge/commands/tacoda/keystone/keystone-mode.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 | $0.00013 | $0.00238 |
| Opus 5.5 | $0.00005 | $0.00095 |
| Sonnet 5.5 | $0.00003 | $0.00048 |
| Haiku 4.5 | $0.00001 | $0.00024 |
Grade A, and why
keystone-mode 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.
This is a copy
92% identical to mode — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
mode
Switch the charter pacing mode (paired / solo / autopilot). Read .charter/guides/process/modes.md.
Activities
- If the user named
paired,solo, orautopilot, set that as the active mode. - If no mode was named, print the current mode and a one-line description of each.
- Update
.charter/guides/process/modes.mdin place — replace the "Current mode" line. Do not rewrite the rest of the file.
Mode summary
- paired — user is at the keyboard reviewing every step. Confirm before non-trivial edits.
- solo — user is around but not watching every step. Run sensors and proceed; ask only at genuine forks.
- autopilot — user is away. Execute end-to-end; pause only on iron-law violations or destructive actions.
Iron law
No silent overwrites of state files. Show the modes.md diff before saving.
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 · 23 lines · 13 tokens per session scan A efe9bc2733fa
keystone-mode is a command published in the GitHub repository tacoda/keystone (44 stars, last pushed 3mo ago), licensed MIT. It adds 13 tokens to every session and 238 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 92% identical to mode, differing in 4 lines, and is treated as a copy.
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