tenacity

tenacity is a skill for Claude Code from donald-ada/workinggenius. It costs 97 tokens per session (1,704 once invoked), scanned A, original, MIT.

A checklist and workflow for verifying that a coding task is genuinely finished. It reruns checks with fresh evidence, reviews the complete change, cleans up, commits it, and records what happened.

In plain words
What is it for?
Use it when closing a tracked task or other substantial change that needs tests, review, cleanup, and a final record.
Why use it?
It prevents work being marked done because an old test passed or because something merely appears to work. Claims are checked against the current code and stated acceptance criteria.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the workinggenius plugin — 23 skills, 7 agents, 1 hook shipped together

Good fit Use it when closing a tracked task or other substantial change that needs tests, review, cleanup, and a final record.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/donald-ada/workinggenius/tenacity
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.

Any agent
npx skills add donald-ada/workinggenius --skill tenacity
Clone the repo
git clone --depth 1 https://github.com/donald-ada/workinggenius

Made for: Claude Code.

Or install workinggenius, the plugin that ships this one along with the rest of its 23 skills, 7 agents, 1 hook.

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 tenacity

README.md
[![agentmods](https://agentmods.dev/badge/skills/donald-ada/workinggenius/tenacity/github.svg)](https://agentmods.dev/skills/donald-ada/workinggenius/tenacity)
Your own site
<a href="https://agentmods.dev/skills/donald-ada/workinggenius/tenacity"><img src="https://agentmods.dev/badge/skills/donald-ada/workinggenius/tenacity/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.

agentmods 80×15 button for tenacity

Your own site · 80×15
<a href="https://agentmods.dev/skills/donald-ada/workinggenius/tenacity"><img src="https://agentmods.dev/badge/skills/donald-ada/workinggenius/tenacity.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,704 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00097 $0.01704
Opus 5.5 $0.00039 $0.00682
Sonnet 5.5 $0.00019 $0.00341
Haiku 4.5 $0.00010 $0.00170

Measured today against content hash 22b1690e1a67, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tenacity 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 today.

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/tenacity/SKILL.md · 31 lines

How it starts

The opening of the file, as written. The whole thing — 31 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tenacity

The genius of finishing. Its failure mode is the false "done": satisfaction declared on stale evidence, or on no evidence at all.

The concept: "done" is a claim about fresh evidence, and evidence expires with the session. If the command didn't run here, its result doesn't exist. Re-read the snapshot, the CONTRACT.md it points at (that file is the contract; your memory of it is not), and, of the log entries it links, the slices' evidence alone — the slice-N entries, each in its slice's branch; the other branches hold process, not claims to verify. Then run everything fresh and read the output: the suite, the checks, every acceptance criterion; where there is no Slices section, the Problem section's success criteria instead. "Should pass", "passed earlier", "seems to work" are each a command you haven't run in this session.

Where the slices recorded a dirty baseline, the fresh run is held to the same line, no new failures, and the baseline is named in this stage's evidence. Have the plugin's reviewer agent (agents/reviewer.md) judge the diff from base: against the brief — its task message naming the diff, what it is judged against, where the record lives, and which slices already carried their own review, so its weight falls on the joints between slices no seam test reaches and the drift of the whole against the brief. Where the work cut more than one slice, spawn three in parallel, blind to each other, each told where its weight falls: the joints between slices, the drift of the whole against the brief, the inputs and states no criterion mentions. Three, each with a focus, because one reviewer spends its reading on whichever it meets first, and a focus is a place to start, never a limit on what it may flag. Don't tell it what not to flag, because the joint you didn't think to name is the one it is there for; treat its findings as claims to verify, because a review sent looking will find something and a finding fixed unchecked costs the fix. Start it before the fresh run, because both only read and the run fills the time the review takes. Spawn it synchronously where you cannot be certain the harness wakes you, and never end your turn while it runs — a review nobody reads did not run. Where base: was never pinned, pin it now — the commit before this work's changes began.

Walk the recorded assumed: and owed: lines — an assumption that contradicts the brief is a defect however green the tests, and an owed: line is a criterion nobody's eyes have checked: put it to the user now, before done is said, and drain it with what they saw. Whatever the fresh run disproves is corrected rather than quietly dropped — and the errata skill is loaded before the correction is proposed, not after, because the first move to hand is to fix the false line itself, and a log line that recorded a false result is a record, corrected only by what is appended below it. Before the user accepts, the close says what changed at the behavior level — what they will now see happen, and the consequences they will live with — because built work nobody absorbed is next month's surprise. It offers no quiz and asks no closing question, because an offer made at every close is a prompt the user waves off every time; the blindspot skill's quiz runs when they ask for it.

Read the full file on GitHub · 31 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. today Changed · -6 lines 22b1690e1a67
  2. 4d ago Changed · -2 lines 23a7b052de8a
  3. 1mo ago Changed fa46068b9d74
  4. 1mo ago Changed 964c1fa49eb1
  5. 1mo ago Changed · +38 tokens per session 0480e940858f
  6. 1mo ago Changed · +7 lines 84b965b1cd1b
  7. 2mo ago Changed · +9 lines 2298792cd055
  8. 2mo ago First seen · 23 lines · 59 tokens per session scan A a2c63056bb60

Subscribe to this mod's changes

tenacity is a skill published in the GitHub repository donald-ada/workinggenius (6 stars, last pushed today), licensed MIT. It adds 97 tokens to every session and 1,704 once invoked, about $0.0004 per session on Opus 5.5. 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.