krypton-execution

A workflow for carrying out an already approved Krypton plan, goal document, or implementation plan.

In plain words
What is it for?
It organizes implementation tasks and review gates, then checks the result against the planned acceptance evidence and restrictions.
Why use it?
It keeps coding aligned with the plan’s ownership, interface, migration, and proof requirements instead of letting the work drift.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/jturntdev/krypton/krypton-execution
Any agent
npx skills add jturntdev/krypton --skill krypton-execution
Clone the repo
git clone --depth 1 https://github.com/jturntdev/krypton

Made for: Claude Code, Codex.

Per session 61 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 725 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00061 $0.00725
Opus 5 $0.00030 $0.00362
Sonnet 5 $0.00012 $0.00145
Haiku 4.5 $0.00006 $0.00072

Measured 2d ago against content hash eeaca2437ff7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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.

skills/krypton-execution/SKILL.md · 106 lines

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.md
  • reviewer-prompt.md
  • maintainer-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:

  1. Confirm the task still matches the plan contract.
  2. Gather only the context needed for the task.
  3. Implement directly in the main agent.
  4. Review the result before integration or checkpoint.
  5. Check for wrong owner, duplicate path, missing cutover, contract drift, and weak proof.
  6. Commit or checkpoint only the current task files when the local workflow expects commits.
  7. 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:

Read the full file on GitHub · 106 lines

Files

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.

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. 2d ago First seen · 106 lines · 61 tokens per session scan A eeaca2437ff7

Subscribe to this mod's changes

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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