Agent skill

Post Implementation Review

by EpicenterHQ in EpicenterHQ/epicenter

Review cumulative implementation for structural collapse, invariant ownership, and correctness.

Custom licenceAuto-check passed

Install Post Implementation Review

skills CLI
$ npx skills add EpicenterHQ/epicenter --skill post-implementation-review -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install EpicenterHQ/epicenter post-implementation-review --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/EpicenterHQ/epicenter.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/post-implementation-review .claude/skills/post-implementation-review && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
post-implementation-review
GitHub stars
4.8k
Token cost
~2.8k tokens
SKILL.md length
1,119 words
Files
1
Skills in repo
65
Repo updated
First seen
Licence
Custom licence

At a glance

Review cumulative implementation for structural collapse, invariant ownership, and correctness.

  • Works in 10 steps: Identify the cumulative changed behavior… → Inventory the touched files and read… → List every file read as an ASCII tree… → …
  • Reviewing work after implementation
  • SKILL.md covers Lane, Evidence, Limits, Related Skills, Independent review and Review Order, plus 8 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Post Implementation Review is an agent skill from EpicenterHQ/epicenter. Review cumulative implementation for structural collapse, invariant ownership, and correctness. Use for reviewing work after implementation, doing a second pass, or performing a final sweep. Independent structural verdicts belong to adversarial-review.

Its SKILL.md is about 2.8k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Open-source, local-first apps.

When your agent uses it

  • Reviewing work after implementation
  • Doing a second pass
  • Performing a final sweep

Example prompts

  • “/post-implementation-review”

Workflow steps

10 steps, taken from the first numbered list in SKILL.md.

  1. Identify the cumulative changed behavior or API and trace its owners,
  2. Inventory the touched files and read them in that context, including relevant
  3. List every file read as an ASCII tree before analysis.
  4. Run the first-read pass.
  5. Run the mental inlining pass.
  6. Run the ownership and collapse check.
  7. Run the smell and invariant checks.
  8. Review API shape, naming, and file organization.
  9. Run diagnostics and tests appropriate to the changed lane. Compare failures
  10. Report findings before making cleanup edits unless the issue is a direct

What it can do on your machine

Read from SKILL.md and the folder at commit 9cc65c3. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Post Implementation Review loads about 2.8k tokens when it runs. Until then it costs about 70 tokens; SKILL.md has 1,119 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~70
When it runs · the whole SKILL.md, loaded when a task matches
~2.8k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,119 words (~2,838 tokens).

“Implementation reveals relationships that a plan could only predict. Review the whole affected system to find the owner or invariant that makes several local repairs unnecessary. Then check the resulting shape for correctness and clarity. A collection of individually reasonable…”

— opening of SKILL.md by EpicenterHQ, Custom licence
name
post-implementation-review
metadata.author
epicenter
metadata.version
1.0

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .agents/skills/post-implementation-review of EpicenterHQ/epicenter.

Open the folder on GitHubat commit 9cc65c3

Compare with similar skills

Post Implementation Review next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Post Implementation Review compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Post Implementation Review this skillEpicenterHQ/epicenter4.8k—~2.8kAutomated safety check: PassCustom licence
List Structurethedaviddias/Front-End-Checklist74k—~438Automated safety check: PassMIT
Invariant Guardsickn33/agentic-awesome-skills47k1 repos~4.5kAutomated safety check: PassApache-2.0
Structured Datathedaviddias/Front-End-Checklist74k—~420Automated safety check: PassMIT
Bio Structural Biology Modern Structure PredictionFreedomIntelligence/OpenClaw-Medical-Skills3.1k1 repos~2.5kAutomated safety check: PassNone
Correctcursor/plugins10k3 repos~612Automated safety check: PassNone

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Questions about Post Implementation Review

What does Post Implementation Review do?

Review cumulative implementation for structural collapse, invariant ownership, and correctness. Post Implementation Review is an agent skill from EpicenterHQ/epicenter. Review cumulative implementation for structural collapse, invariant ownership, and correctness.

When should I use Post Implementation Review?

Post Implementation Review fits situations like: reviewing work after implementation; doing a second pass; performing a final sweep.

How do I install Post Implementation Review in Claude Code?

Run `npx skills add EpicenterHQ/epicenter --skill post-implementation-review -a claude-code`. Or copy the skill folder (.agents/skills/post-implementation-review in EpicenterHQ/epicenter) into .claude/skills/post-implementation-review in your project. Claude Code loads it when a task matches its description.

How do I install Post Implementation Review in Codex?

Run `npx skills add EpicenterHQ/epicenter --skill post-implementation-review -a codex`. Or copy the skill folder (.agents/skills/post-implementation-review in EpicenterHQ/epicenter) into .agents/skills/post-implementation-review in your project. Codex loads it when a task matches its description.

Can I use Post Implementation Review in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add EpicenterHQ/epicenter --skill post-implementation-review -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/post-implementation-review, .gemini/skills/post-implementation-review, .github/skills/post-implementation-review and .opencode/skills/post-implementation-review in your project.

What does Post Implementation Review need to run?

SKILL.md names no scripts, command-line tools or credentials: Post Implementation Review is instructions for the agent only.

Does Post Implementation Review access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Post Implementation Review safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Post Implementation Review use?

Post Implementation Review has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Post Implementation Review use?

About 2.8k tokens (SKILL.md is roughly 11k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Post Implementation Review?

Skills that share tags, products or a category with Post Implementation Review: List Structure (thedaviddias/Front-End-Checklist, 74k stars), Invariant Guard (sickn33/agentic-awesome-skills, 47k stars), Structured Data (thedaviddias/Front-End-Checklist, 74k stars) and Bio Structural Biology Modern Structure Prediction (FreedomIntelligence/OpenClaw-Medical-Skills, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Post Implementation Review?

EpicenterHQ (a GitHub organization) maintains it in EpicenterHQ/epicenter, which has 4,819 GitHub stars. The repository holds 65 skills in this directory. The repository was last updated on October 8, 2026.

Source: EpicenterHQ/epicenter on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.