execute-durably

execute-durably is a skill for Claude Code, Codex from Drizzy07x/Skillquiver. It costs 40 tokens per session (1,695 once invoked), scanned A, original, MIT.

A method for running long or interruption-prone work from a durable state file outside the project repository. The file records the objective, testable completion criteria, statuses, and evidence.

In plain words
What is it for?
Use it for work that spans multiple sessions, may be interrupted, or needs strong proof of completion. It guides checks from a small end-to-end slice toward the remaining implementation.
Why use it?
It lets work resume after interruptions or context changes without losing what was completed or why. Evidence is tied to the source version it checked, so later changes trigger re-verification.

Skill for Claude CodeCodex

Part of the skillquiver plugin — 24 skills shipped together

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/drizzy07x/skillquiver/execute-durably
Any agent
npx skills add Drizzy07x/Skillquiver --skill execute-durably
Clone the repo
git clone --depth 1 https://github.com/Drizzy07x/Skillquiver

Made for: Claude Code, Codex.

Or install skillquiver, the plugin that ships this one along with the rest of its 24 skills.

Wrote 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.

agentmods badge for execute-durably

README.md
[![agentmods](https://agentmods.dev/badge/skills/drizzy07x/skillquiver/execute-durably.svg)](https://agentmods.dev/skills/drizzy07x/skillquiver/execute-durably)
Your own site
<a href="https://agentmods.dev/skills/drizzy07x/skillquiver/execute-durably"><img src="https://agentmods.dev/badge/skills/drizzy07x/skillquiver/execute-durably.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,695 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 $0.00040 $0.01695
Opus 5 $0.00020 $0.00847
Sonnet 5 $0.00008 $0.00339
Haiku 4.5 $0.00004 $0.00169

Measured 4d ago against content hash e8929f5ea341, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

execute-durably 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 4d 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/execute-durably/SKILL.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Execute Durably

Use durable state only when its recovery value exceeds its overhead. Keep state outside the repository so the project never acquires workflow artifacts.

1. Initialize the state file

Create one state file per session (markdown or JSON) in a scratch directory or user-level location outside the repo. It holds:

  • Objective: the complete outcome, stated once.
  • Criteria: numbered and falsifiable. Each names the exact command or observation that proves it and what failure would look like. A criterion you cannot fail is not a criterion.
  • Per-criterion status: pending -> in_progress -> claimed -> verified. Side exits: failed, rejected, stale — each reopens to pending with a written reason, never silently.
  • Evidence log: append-only. Never rewrite or delete an entry; correct by appending a new one.

Order criteria tracer-first: the first criterion proves a thin end-to-end slice through every layer involved. Thicken behind proven wiring; do not perfect one layer while its connection to the next is a guess.

Evidence is bound to the source it was captured against. Any later source change makes prior evidence stale: rerun the check and re-verify before closing.

2. Resume from state, not memory

At the start of every later turn — and always after compaction or interruption — reread the state file before acting. Continue the first unresolved criterion. Do not rebuild the plan from memory; when memory and state disagree, state wins. The log, not recollection, says what has been proven.

3. Record evidence verbatim

Append one log entry per check:

  • Executable check: exact command, exit code, and the decisive output lines copied verbatim. Paraphrased output is not evidence. Only a zero exit code is eligible to support a claim.
  • Visual, web, or desktop check: screenshot or artifact path plus one line stating what it shows. Capture such evidence with automate-ui; it supports a behavioral criterion only alongside the executable check, and stays claimed until verified.
  • Navigation or research findings: record why files, tests, or sources were selected — but discovery evidence never completes a behavioral criterion by itself.

Read the full file on GitHub · 101 lines

Files

What ships with it

1 file 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. 4d ago First seen · 101 lines · 40 tokens per session scan A e8929f5ea341

Subscribe to this mod's changes

execute-durably is a skill published in the GitHub repository Drizzy07x/Skillquiver (2 stars, last pushed 12d ago), licensed MIT. It adds 40 tokens to every session and 1,695 once invoked, about $0.0002 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 2026-08-31.

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