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 agentmods add skills/jturntdev/krypton/krypton-executionnpx skills add jturntdev/krypton --skill krypton-executiongit clone --depth 1 https://github.com/jturntdev/kryptonWhat 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 | $0.00061 | $0.00725 |
| Opus 5 | $0.00030 | $0.00362 |
| Sonnet 5 | $0.00012 | $0.00145 |
| Haiku 4.5 | $0.00006 | $0.00072 |
Grade A, and why
krypton-execution 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 2d 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 — 106 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Krypton Execution
Krypton Execution runs an approved plan without drifting from its ownership, cutover, and evidence contract.
Required Roles
Use the role expectations in ../../docs/required-roles.md when the harness supports named agents. Implementation stays with the main agent. The normal execution stack is:
explorer -> main agent -> plan-reviewer -> reviewer -> maintainer -> verifier
Use the individual prompt templates in this skill folder:
post-plan-reviewer-prompt.mdreviewer-prompt.mdmaintainer-prompt.md
Entry Rule
Do not invent the plan inside this workflow. If no approved plan, goal document, or clear task board exists, ask for one direct input or use Krypton Planning first. Prefer a full Krypton goal package:
docs/goals/<goal-slug>/PLAN.md
docs/goals/<goal-slug>/GOAL.md
docs/goals/<goal-slug>/EVIDENCE.md
Before work starts, restate:
Goal:
Plan path:
Intent:
Truth owner:
Contract boundary:
Cutover:
Displaced path:
Acceptance evidence:
Kill criteria:
Forbidden moves:
Task Board
Turn the plan into an ordered board:
Task:
Owner:
Input:
Files allowed:
Files forbidden:
Output:
Evidence:
Depends on:
Parallel safe:
Run implementation tasks sequentially in the main agent unless the approved plan explicitly says otherwise.
Execution Loop
For each task:
- Confirm the task still matches the plan contract.
- Gather only the context needed for the task.
- Implement directly in the main agent.
- Review the result before integration or checkpoint.
- Check for wrong owner, duplicate path, missing cutover, contract drift, and weak proof.
- Commit or checkpoint only the current task files when the local workflow expects commits.
- Update the task board.
The main agent owns implementation, integration, and final coherence.
Evidence Gate
Do not call the goal complete because tests, lint, typecheck, or diffs passed. Those are supporting checks.
Completion requires target-perspective evidence, such as:
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 106 lines · 61 tokens per session scan A eeaca2437ff7
krypton-execution is a skill published in the GitHub repository jturntdev/krypton (129 stars, last pushed 1mo ago), licensed MIT. It adds 61 tokens to every session and 725 once invoked, about $0.0003 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.
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