Agent skill

Deep Analyze

Deep-dive analysis of an initial proposal — research code implementation, produce an actionable roadmap and alternatives

MITAuto-check passedDevelopment

Install Deep Analyze

skills CLI

$ npx skills add sd0xdev/sd0x-harness --skill deep-analyze -a claude-code

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

GitHub CLI

$ gh skill install sd0xdev/sd0x-harness deep-analyze --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/sd0xdev/sd0x-harness.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/deep-analyze .claude/skills/deep-analyze && 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/

Paste into Claude Code

Install the "deep-analyze" agent skill from https://github.com/sd0xdev/sd0x-harness/tree/main/skills/deep-analyze into .claude/skills/deep-analyze/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deep-analyze", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/sd0xdev/sd0x-harness/tree/main/skills/deep-analyze

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add sd0xdev/sd0x-harness --skill deep-analyze -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install sd0xdev/sd0x-harness deep-analyze --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sd0xdev/sd0x-harness.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/deep-analyze .agents/skills/deep-analyze && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "deep-analyze" agent skill from https://github.com/sd0xdev/sd0x-harness/tree/main/skills/deep-analyze into .agents/skills/deep-analyze/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deep-analyze", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add sd0xdev/sd0x-harness --skill deep-analyze -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install sd0xdev/sd0x-harness deep-analyze --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sd0xdev/sd0x-harness.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/deep-analyze .cursor/skills/deep-analyze && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "deep-analyze" agent skill from https://github.com/sd0xdev/sd0x-harness/tree/main/skills/deep-analyze into .cursor/skills/deep-analyze/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deep-analyze", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/sd0xdev/sd0x-harness.git --path skills/deep-analyze

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add sd0xdev/sd0x-harness --skill deep-analyze -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install sd0xdev/sd0x-harness deep-analyze --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sd0xdev/sd0x-harness.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/deep-analyze .gemini/skills/deep-analyze && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "deep-analyze" agent skill from https://github.com/sd0xdev/sd0x-harness/tree/main/skills/deep-analyze into .gemini/skills/deep-analyze/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deep-analyze", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install sd0xdev/sd0x-harness deep-analyze

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add sd0xdev/sd0x-harness --skill deep-analyze -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/sd0xdev/sd0x-harness.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/deep-analyze .github/skills/deep-analyze && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "deep-analyze" agent skill from https://github.com/sd0xdev/sd0x-harness/tree/main/skills/deep-analyze into .github/skills/deep-analyze/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deep-analyze", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add sd0xdev/sd0x-harness --skill deep-analyze -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install sd0xdev/sd0x-harness deep-analyze --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/sd0xdev/sd0x-harness.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/deep-analyze .opencode/skills/deep-analyze && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "deep-analyze" agent skill from https://github.com/sd0xdev/sd0x-harness/tree/main/skills/deep-analyze into .opencode/skills/deep-analyze/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deep-analyze", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: deep-analyze
GitHub stars: 192
Token cost: ~528 tokens
SKILL.md length: 119 words
Files: 1
Skills in repo: 91
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Deep-dive analysis of an initial proposal — research code implementation, produce an actionable roadmap and alternatives

Works in 3 steps: Understand & Validate → Code Deep Dive → Roadmap Output
Development work in your project
SKILL.md covers Trigger, When NOT to Use, Agent Dispatch and Task, plus 2 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Deep Analyze is an agent skill from sd0xdev/sd0x-harness. Deep-dive analysis of an initial proposal — research code implementation, produce an actionable roadmap and alternatives

Its SKILL.md is about 530 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. The repository describes itself as: The harness layer for Claude Code — a reference implementation of harness engineering with hook-enforced dual review, state-machine gates that survive context compaction, and… The licence is MIT.

When your agent uses it

Development work in your project

Example prompts

“/deep-analyze”

Requirements

Pre-approved tools (allowed-tools): Read, Grep, Glob, Bash(git:*), Bash(node:*), Write, Agent

Workflow steps

3 steps, taken from the step headings in SKILL.md.

Understand & Validate
Code Deep Dive
Roadmap Output

What it can do on your machine

Read from SKILL.md and the folder at commit c9a2036. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
- Read
- Grep
- Glob
- Bash(git:*)
- Bash(node:*)
- Write
- Agent
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown and bash).
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

Deep Analyze loads about 528 tokens when it runs. Until then it costs about 33 tokens; SKILL.md has 119 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~33
When it runs · the whole SKILL.md, loaded when a task matches: ~528

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

The full file from sd0xdev/sd0x-harness at commit c9a2036, republished under its MIT licence (© sd0xdev). 119 words, ~528 tokens.

Download SKILL.mdSave it as .claude/skills/deep-analyze/SKILL.md (or your agent's skills folder).

name: deep-analyze
description: Deep-dive analysis of an initial proposal — research code implementation, produce an actionable roadmap and alternatives
allowed-tools: Read, Grep, Glob, Bash(git:*), Bash(node:*), Write, Agent

Deep Analyze

Trigger

Keywords: deep analyze, deep analysis, deep dive, roadmap, deep-analyze

When NOT to Use

Architecture advice only (use /codex-architect)
Tech spec writing (use /tech-spec)
Feasibility analysis (use /feasibility-study)

Agent Dispatch

Agent({
  description: "Deep-dive analysis with actionable roadmap and alternatives",
  subagent_type: "solution-architect",
  prompt: `Perform a deep analysis of the following initial proposal.
Follow the analysis framework and output format defined in this skill.`
})

Task

Input

$ARGUMENTS

Analysis Flow

Phase 1: Understand & Validate

Extract the core objectives of the initial proposal
Identify key assumptions (which may be wrong)
List technical points that need verification

Phase 2: Code Deep Dive

Research the existing codebase thoroughly. Must verify:

Naming conventions
DI injection patterns
Error handling patterns
Implementation patterns of similar features

Phase 3: Roadmap Output

Based on the research, produce:

Implementation steps (immediately actionable)
Key pseudocode (only core 1-3 lines, omit if not necessary)
Alternative comparison

Output

markdown

# [Proposal Name] Implementation Roadmap

## Proposal Validation
| Assumption | Verification Result | Impact |

## Code Research Summary
| Module | Existing Implementation | Reusable |

## Implementation Roadmap
### Step 1: [Title]
**Objective**: One sentence
**Files**: `src/xxx.ts` (modify/create)

## Alternatives
| Dimension | Option A (Recommended) | Option B |

## Risks & Mitigations
| Risk | Probability | Mitigation |

## Immediate Actions
1. [ ] First task
2. [ ] Second task

Examples

bash

/deep-analyze "Use Redis to cache token prices with TTL 5 minutes"
/deep-analyze docs/features/xxx/tech-spec.md

Files

Just SKILL.md in skills/deep-analyze of sd0xdev/sd0x-harness.

Open the folder on GitHubat commit c9a2036

Compare with similar skills

Deep Analyze 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.

Deep Analyze compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Deep Analyze this skillsd0xdev/sd0x-harness	192	—	~528	Automated safety check: Pass	MIT	yesterday
Finishing a Development Branchobra/superpowers	296k	5 repos	~1.9k	Automated safety check: Pass	MIT	today
Typescript Advanced Typesrolling-scopes/rsschool-app	10k	24 repos	~4.2k	Automated safety check: Pass	MPL-2.0	3 days ago
PR Babysitteropeninterpreter/openinterpreter	69k	3 repos	~4.2k	Automated safety check: Pass	Apache-2.0	today
Code Review ChecklistshareAI-lab/learn-claude-code	78k	5 repos	~1.1k	Automated safety check: Pass	MIT	9 days ago
Greplooponyx-dot-app/onyx	32k	4 repos	~3.3k	Automated safety check: Pass	MIT	today

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Questions about Deep Analyze

What does Deep Analyze do?

Deep-dive analysis of an initial proposal — research code implementation, produce an actionable roadmap and alternatives. Deep Analyze is an agent skill from sd0xdev/sd0x-harness.

When should I use Deep Analyze?

Deep Analyze fits situations like: development work in your project.

How do I install Deep Analyze in Claude Code?

Run `npx skills add sd0xdev/sd0x-harness --skill deep-analyze -a claude-code`. Or copy the skill folder (skills/deep-analyze in sd0xdev/sd0x-harness) into .claude/skills/deep-analyze in your project. Claude Code loads it when a task matches its description.

How do I install Deep Analyze in Codex?

Run `npx skills add sd0xdev/sd0x-harness --skill deep-analyze -a codex`. Or copy the skill folder (skills/deep-analyze in sd0xdev/sd0x-harness) into .agents/skills/deep-analyze in your project. Codex loads it when a task matches its description.

Can I use Deep Analyze 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 sd0xdev/sd0x-harness --skill deep-analyze -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/deep-analyze, .gemini/skills/deep-analyze, .github/skills/deep-analyze and .opencode/skills/deep-analyze in your project.

What does Deep Analyze need to run?

SKILL.md names no scripts, command-line tools or credentials: Deep Analyze is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Grep, Glob, Bash(git:*), Bash(node:*), Write, Agent.

Does Deep Analyze 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 Deep Analyze 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 Deep Analyze use?

Deep Analyze is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Deep Analyze use?

About 528 tokens (SKILL.md is roughly 2.1k 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 Deep Analyze?

Skills that share tags, products or a category with Deep Analyze: Finishing a Development Branch (obra/superpowers, 296k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars), PR Babysitter (openinterpreter/openinterpreter, 69k stars) and Code Review Checklist (shareAI-lab/learn-claude-code, 78k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Deep Analyze?

sd0xdev (a GitHub user) maintains it in sd0xdev/sd0x-harness, which has 192 GitHub stars. The repository holds 91 skills in this directory. The repository was last updated on October 6, 2026.

Source: sd0xdev/sd0x-harness on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Deep Analyze

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Deep Analyze

Trigger

When NOT to Use

Agent Dispatch

Task

Input

Analysis Flow

Phase 1: Understand & Validate

Phase 2: Code Deep Dive

Phase 3: Roadmap Output

Output

Examples

Files

Compare with similar skills

Similar skills

More from sd0xdev/sd0x-harness

Related

Questions about Deep Analyze