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 tacoda/keystone --skill keystone-new-actiongit 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/skills/tacoda/keystone/keystone-new-action)<a href="https://agentmods.dev/skills/tacoda/keystone/keystone-new-action"><img src="https://agentmods.dev/badge/skills/tacoda/keystone/keystone-new-action/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/tacoda/keystone/keystone-new-action"><img src="https://agentmods.dev/badge/skills/tacoda/keystone/keystone-new-action.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 | $0.00017 | $0.00400 |
| Opus 5 | $0.00009 | $0.00200 |
| Sonnet 5 | $0.00003 | $0.00080 |
| Haiku 4.5 | $0.00002 | $0.00040 |
Grade A, and why
keystone-new-action 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 9d 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.
What it actually says
keystone:new-action — scaffold an action
An action is one atomic unit of lifecycle work, invoked by name
(by a playbook, another action, the menu file, or the user). Default
actions ship with every install: spec, orient, verify, review,
learn, audit, bootstrap, mode, synthesize, check-drift.
Custom actions for project-specific lifecycle phases live alongside.
Actions live at .charter/actions/<name>.md (flat, no topic
directory — actions are global by name across the cascade).
Run
keystone new action <name>
Example:
keystone new action release-notes
# writes .charter/actions/release-notes.md
After scaffolding
- Fill in
## Entry condition— what must be true before this action runs. - Fill in
## Activities— a numbered list of verb + artifact steps. - Fill in
## Exit condition— what must be true when the action completes. - List dependent sensors / subagents / corpus in the
deps:frontmatter so the indexer can build the graph. - Run
keystone indexto refresh the descriptor surface.
Full port contract:
docs/ports/action.md.
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.
- 9d ago First seen · 61 lines · 17 tokens per session scan A 4a6a72a773b8
keystone-new-action is a skill published in the GitHub repository tacoda/keystone (44 stars, last pushed 2mo ago), licensed MIT. It adds 17 tokens to every session and 400 once invoked, about $0.0001 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 2026-08-30.
Other skills, from other repositories
portaljs-new-portal
Scaffold a new PortalJS data portal from a brief. Copies the canonical template from examples/portaljs-catalog and substitutes project tokens. Use when starting a brand-new data portal project from scratch.
workflow-creation
Create a new Stencila workflow. Use when asked to create, write, scaffold, or set up a workflow directory or WORKFLOW.md file. Covers workflow discovery, duplicate-name checks, ephemeral workflows, WORKFLOW.md frontmatter, DOT pipeline authoring, goals, agents, branching, composition, and validation.
agent-creation
Create a new Stencila agent. Use when asked to create, write, scaffold, or set up an agent directory or AGENT.md file. Covers workspace and user-level agents with model, provider, tool, trust, and MCP configuration.
skill-creation
Create a new Stencila workspace skill. Use when asked to create, write, or scaffold a SKILL.md file or skill directory.
design-import
Scaffolds React components from a Claude Design handoff bundle and stops at files on disk: no stories, no tests, no pull request. Use when handed a claude.ai/design URL or a local bundle file; when that same scaffold should carry on through test generation, browser verification and an opened PR, run /ork:design-ship…
plugin-init
A project starter for creating Zhin.js plugins, which are installable packages that extend the Zhin.js bot framework. It sets up the required files, folders, package metadata, entry point, and documentation.