incremental-implementation

incremental-implementation is a skill for Claude Code, Codex from OutlineDriven/odin-claude-plugin. It costs 58 tokens per session (760 once invoked), scanned A, original, Apache-2.0.

A workflow for implementing a large or multi-file change in small slices, with each slice tested and committed.

In plain words
What is it for?
Use it for features, refactors, breakdowns, or changes that involve more than a small amount of code.
Why use it?
It makes progress easier to verify and undo while requiring the complete feature to pass the full test suite at the end.

Skill for Claude CodeCodex

Part of the odin-code plugin — 52 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/outlinedriven/odin-claude-plugin/incremental-implementation
Any agent
npx skills add OutlineDriven/odin-claude-plugin --skill incremental-implementation
Clone the repo
git clone --depth 1 https://github.com/OutlineDriven/odin-claude-plugin

Made for: Claude Code, Codex.

Or install odin-code, the plugin that ships this one along with the rest of its 52 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 incremental-implementation

README.md
[![agentmods](https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/incremental-implementation.svg)](https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/incremental-implementation)
Your own site
<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/incremental-implementation"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/incremental-implementation.svg" alt="Measured on agentmods" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 760 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 $0.00058 $0.00760
Opus 5 $0.00029 $0.00380
Sonnet 5 $0.00012 $0.00152
Haiku 4.5 $0.00006 $0.00076

Measured yesterday against content hash b91052e22be4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

incremental-implementation 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 yesterday.

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.

plugins/odin-code/skills/incremental-implementation/SKILL.md · 48 lines

How it starts

The opening of the file, as written. The whole thing — 48 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Incremental implementation

Contract

Field Bound contract
Trigger Implementing any multi-file change, building a new feature from a breakdown, refactoring, or when about to write more than a small amount of code at once.
Authority Reversible local: write only named local artifacts; rollback via VCS revert of each slice commit.
Side effect Sequence of tested, committed slices, possibly behind feature flags.
Done Each slice was individually tested and committed, the full suite passes, the build is clean, and the feature works end-to-end without uncommitted changes.

Inputs

  • Plan or breakdown (required): ordered list of atomic changes that together deliver the feature or refactor. Each item must name the files it touches and the observable behavior it adds or changes.
  • Existing test suite (required): the project's current test runner and passing baseline.
  • Feature flag mechanism (optional): if the project uses feature flags, the flag name and gating surface for the new behavior.

Procedure

  1. Read the plan. Confirm each item is independently compilable and testable. If an item cannot be tested in isolation, split it further before proceeding.
  2. For each plan item, in order: a. Implement the change across the named files. Keep the slice as thin as possible: one behavior, one concern, one testable contract. b. If a feature flag is in scope, gate the new behavior behind it so the system remains correct with the flag off. c. Run the affected tests. If the project has a fast targeted test command, use it; otherwise run the full suite. d. Confirm the build is clean: no new warnings, no type errors, no lint regressions on touched files. e. Commit the slice with a message that names the behavior added or changed. Do not bundle unrelated changes.
  3. After all slices are committed, run the full test suite once more to confirm no cross-slice interaction introduced a regression.
  4. Verify end-to-end: exercise the feature or refactor path manually or via integration test to confirm the complete behavior works.
  5. If a feature flag was used, confirm the flag-on and flag-off paths both pass. Leave the flag in place unless the plan explicitly calls for its removal in a later slice.

Read the full file on GitHub · 48 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. yesterday First seen · 48 lines · 58 tokens per session scan A b91052e22be4

Subscribe to this mod's changes

incremental-implementation is a skill published in the GitHub repository OutlineDriven/odin-claude-plugin (35 stars, last pushed yesterday), licensed Apache-2.0. It adds 58 tokens to every session and 760 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 2026-09-04.