add

add is a skill for Claude Code from pilotspace/ADD. It costs 212 tokens per session (3,417 once invoked), scanned A, original, MIT.

A repository workflow for AI-assisted coding that first fixes the task’s rules and checks, then implements the change and leaves evidence in a durable .add/ bundle.

In plain words
What is it for?
It helps agents inspect a project, plan tasks, write or run tests, build to a passing state and record progress for later sessions or human review.
Why use it?
It reduces unclear requirements, repeated context gathering and unverified changes by making direction, tests and review evidence part of the work.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: mentions subagents.

Good fit It helps agents inspect a project, plan tasks, write or run tests, build to a passing state and record progress for later sessions or human review.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/pilotspace/add/add-4-lean
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 pilotspace/ADD --skill add-4-lean
Clone the repo
git clone --depth 1 https://github.com/pilotspace/ADD

Made for: Claude Code.

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 add

README.md
[![agentmods](https://agentmods.dev/badge/skills/pilotspace/add/add-4-lean/github.svg)](https://agentmods.dev/skills/pilotspace/add/add-4-lean)
Your own site
<a href="https://agentmods.dev/skills/pilotspace/add/add-4-lean"><img src="https://agentmods.dev/badge/skills/pilotspace/add/add-4-lean/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 add

Your own site · 80×15
<a href="https://agentmods.dev/skills/pilotspace/add/add-4-lean"><img src="https://agentmods.dev/badge/skills/pilotspace/add/add-4-lean.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 212 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,417 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 $0.00212 $0.03417
Opus 5.5 $0.00085 $0.01367
Sonnet 5.5 $0.00042 $0.00683
Haiku 4.5 $0.00021 $0.00342

Measured 15d ago against content hash 3073cab00cd6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

add 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 15d 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.

Origin

Copies of this mod

3 near-identical copies found in the catalogue:

  • add — 98% identical, 29 lines differ
  • add — 98% identical, 10 lines differ
  • add — 94% identical, 24 lines differ
benchmark/arms/variants/add-4-lean/SKILL.md · 201 lines

How it starts

The opening of the file, as written. The whole thing — 201 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ADD — direction · evidence · a durable bundle

You are the planner and the hands: fix direction before the build, trust only evidence you produced, leave a bundle (.add/) the next session and the reviewer can read. Your tools: files, git, tests.

Orient — every session, first, in one command

cat .add/PROJECT.md; grep -lE '^status: (direction|build|active)' .add/tasks/*.md .add/milestones/*.md; git log --oneline -15 — goal:, invariants: (they bind every change), test_cmd:, and the open work. Resume an open task at its status:; otherwise size the request. Read what the task touches, never the whole repo. No .add/ yet → create PROJECT.md and empty specs/ milestones/ tasks/ (references/format.md).

Turns — the real cost

Every turn re-reads the whole context: cost grows with turns, not words. Keep every step; cut round-trips:

  • Direction = three turns. (1) One command reads what the task touches and finds how the tests run, installing what is missing in that same command. (2) The task file and its tests; stub only what the checks import (usually one module), raising NotImplementedError so the first run fails on behavior, not imports — Build writes the rest. All as parallel writes in one message. (3) one command runs the checks and seals: <check> ; git add .add/tasks/<slug>.md <tests> && git commit -qm "freeze(<slug>): <goal>". Green, or red on an import error: fix it, refreeze.
  • Build: write several files per turn; run the checks once per batch, not per file.
  • Verify = two turns. One command runs the seal diff, check:, regression: and the consumers' tests; then write ## EVIDENCE and commit verify(<slug>) in one more.
  • Subagents: at most one per beat, in the foreground — never pause the session to wait for one.

Size the work — you route and go

the request lane what persists
mechanical, or a small behavior: ≤3 adjacent files, one sitting, no unknowns Quick a red→green test + one commit
one behavior worth a written contract Task .add/tasks/<slug>.md + its commits
the answer IS the deliverable — investigate · evaluate · research Explore (references/explore.md) the task's ## FINDINGS
a theme, or more than one task Milestone .add/milestones/<slug>.md + its tasks

Read the full file on GitHub · 201 lines

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. 15d ago First seen · 201 lines · 212 tokens per session scan A 3073cab00cd6

Subscribe to this mod's changes

add is a skill published in the GitHub repository pilotspace/ADD (19 stars, last pushed 4d ago), licensed MIT. It adds 212 tokens to every session and 3,417 once invoked, about $0.0008 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 2026-10-01.

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