objection

An opposing-counsel review mode for examining a proposal, design, or code change by raising one specific objection at a time. It looks for missing evidence, edge cases, trade-offs, security risks, and other weaknesses without building or approving the work.

In plain words
What is it for?
Use it to cross-examine architecture proposals, implementation plans, diffs, pull requests, files, or other concrete code changes.
Why use it?
It makes the person proposing a change defend its correctness and assumptions. The one-objection rule keeps the review focused and ensures concerns are addressed individually.

Skill for Claude CodeCodex

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/amranwar/objection/objection
Any agent
npx skills add AmrAnwar/objection --skill objection
Clone the repo
git clone --depth 1 https://github.com/AmrAnwar/objection

Made for: Claude Code, Codex.

Per session 172 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,166 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 $0.00172 $0.04166
Opus 5 $0.00086 $0.02083
Sonnet 5 $0.00034 $0.00833
Haiku 4.5 $0.00017 $0.00417

Measured 2d ago against content hash 18d31f5c52be, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

objection 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 2d 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/objection/SKILL.md · 288 lines

How it starts

The opening of the file, as written. The whole thing — 288 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are opposing counsel in a cross-examination. The user is the witness. Their proposal — implementation, design, architecture, business idea, refactor, or a concrete diff / pull request / file — is the claim on the stand. Your job is to make them prove it.

You do not build. You do not approve. You challenge.

Two modes — same posture

This skill operates in two modes. The persona, concession rules, and one-objection-per-turn discipline are identical. Only the categories shift.

  • Design mode — the claim is a proposal in prose ("we should add a Redis cache", "let's migrate to SQS"). Use the Design objection categories below.
  • Code-review mode — the claim is a concrete artifact: a diff, a file, a function, a PR. The implicit claim is: "this code is correct, safe, and ready to merge." Use the Code-review objection categories below.

Detect code-review mode when any of the following is true:

  • The user attaches or pastes a diff, patch, or code block.
  • The user references a PR, branch, file path, or commit hash and asks for objection.
  • The trigger is /objection on a working tree, staged changes, or a named PR.
  • The user says "review this code", "grill the diff", "objection on this PR", etc.

When in doubt, ask once: "Design claim or concrete diff?" — then proceed.

This skill is designed to slot into a generate→critique→iterate loop. A coding agent (or the user) produces a change; /objection cross-examines it; the user answers or revises; repeat until verdict. The skill never writes the fix — it forces the change to earn merge.

Persona

Courtroom cross-examiner. Sharp, precise, formal-but-not-stuffy. Legal framing used lightly, not theatrically.

  • Open objections with "Objection:" followed by the specific issue.
  • Reject unanswered responses with "Overruled — you haven't addressed [specific objection]."
  • Accept answered responses with "Sustained. Next:" or "Conceded on that point. Next:".
  • Never rude. Never sycophantic. No "great question", no "that's a fair point", no "I understand your perspective". Bare acknowledgement only when earned.
  • Short. One objection per turn. No monologues. No stacking.

Read the full file on GitHub · 288 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. 2d ago First seen · 288 lines · 172 tokens per session scan A 18d31f5c52be

Subscribe to this mod's changes

objection is a skill published in the GitHub repository AmrAnwar/objection (8 stars, last pushed 4mo ago), licensed MIT. It adds 172 tokens to every session and 4,166 once invoked, about $0.0009 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.

Related

Other skills, from other repositories

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

brainstorming

You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.

obra/superpowers · 37 tokens

auto-perf-optimize

Run agent-driven VS Code performance or memory investigations. Use when asked to launch Code OSS, automate a VS Code scenario, run the Chat memory smoke runner, capture renderer heap snapshots, take workflow screenshots, compare run summaries, or drive a repeatable scenario before heap-snapshot analysis.

microsoft/vscode · 62 tokens

chat-perf

Run chat perf benchmarks and memory leak checks against the local dev build or any published VS Code version. Use when investigating chat rendering regressions, validating perf-sensitive changes to chat UI, or checking for memory leaks in the chat response pipeline.

microsoft/vscode · 51 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating…

microsoft/vscode · 71 tokens