Claude Code Agent Development
anthropics/claude-plugins-official
Explains how to write agents for Claude Code plugins: the markdown file with YAML frontmatter, trigger descriptions, model and color settings, and system prompt design.
Create and configure Claude Code sub-agents with custom prompts, tools, and models
Install Sub Agents
$ npx skills add parcadei/Continuous-Claude-v3 --skill sub-agents -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install parcadei/Continuous-Claude-v3 sub-agents --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/parcadei/Continuous-Claude-v3.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/sub-agents .claude/skills/sub-agents && rm -rf skills-srcUse ~/.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/
Install the "sub-agents" agent skill from https://github.com/parcadei/Continuous-Claude-v3/tree/main/.claude/skills/sub-agents into .claude/skills/sub-agents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sub-agents", 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 install https://github.com/parcadei/Continuous-Claude-v3/tree/main/.claude/skills/sub-agentsType 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.
$ npx skills add parcadei/Continuous-Claude-v3 --skill sub-agents -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install parcadei/Continuous-Claude-v3 sub-agents --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/parcadei/Continuous-Claude-v3.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/sub-agents .agents/skills/sub-agents && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "sub-agents" agent skill from https://github.com/parcadei/Continuous-Claude-v3/tree/main/.claude/skills/sub-agents into .agents/skills/sub-agents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sub-agents", 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.
$ npx skills add parcadei/Continuous-Claude-v3 --skill sub-agents -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install parcadei/Continuous-Claude-v3 sub-agents --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/parcadei/Continuous-Claude-v3.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/sub-agents .cursor/skills/sub-agents && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "sub-agents" agent skill from https://github.com/parcadei/Continuous-Claude-v3/tree/main/.claude/skills/sub-agents into .cursor/skills/sub-agents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sub-agents", 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 https://github.com/parcadei/Continuous-Claude-v3.git --path .claude/skills/sub-agents--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add parcadei/Continuous-Claude-v3 --skill sub-agents -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install parcadei/Continuous-Claude-v3 sub-agents --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/parcadei/Continuous-Claude-v3.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/sub-agents .gemini/skills/sub-agents && rm -rf skills-srcUse ~/.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/
Install the "sub-agents" agent skill from https://github.com/parcadei/Continuous-Claude-v3/tree/main/.claude/skills/sub-agents into .gemini/skills/sub-agents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sub-agents", 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.
$ gh skill install parcadei/Continuous-Claude-v3 sub-agentsInstalls 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).
$ npx skills add parcadei/Continuous-Claude-v3 --skill sub-agents -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/parcadei/Continuous-Claude-v3.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/sub-agents .github/skills/sub-agents && rm -rf skills-srcUse ~/.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/
Install the "sub-agents" agent skill from https://github.com/parcadei/Continuous-Claude-v3/tree/main/.claude/skills/sub-agents into .github/skills/sub-agents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sub-agents", 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.
$ npx skills add parcadei/Continuous-Claude-v3 --skill sub-agents -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install parcadei/Continuous-Claude-v3 sub-agents --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/parcadei/Continuous-Claude-v3.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/sub-agents .opencode/skills/sub-agents && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "sub-agents" agent skill from https://github.com/parcadei/Continuous-Claude-v3/tree/main/.claude/skills/sub-agents into .opencode/skills/sub-agents/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sub-agents", 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
sub-agents- GitHub stars
- 3.9k
- Used in
- 1 other repo
- Token cost
- ~929 tokens
- SKILL.md length
- 178 words
- Files
- 1
- Skills in repo
- 141
- Repo updated
- First seen
- Licence
- MIT
At a glance
Create and configure Claude Code sub-agents with custom prompts, tools, and models
- Works in 4 steps: Single responsibility - One clear… → Restrict tools - Only grant what's needed → Clear descriptions - Action-oriented,… → …
- Tasks that involve Subagents
- SKILL.md covers When to Use, Quick Start, Agent File Format and Configuration Fields, plus 7 more sections
- Calls claude
What it does
Sub Agents is an agent skill from parcadei/Continuous-Claude-v3. Create and configure Claude Code sub-agents with custom prompts, tools, and models
Its SKILL.md is about 930 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 Agent Workflows, covering Subagents. The repository describes itself as: Context management for Claude Code. Hooks maintain state via ledgers and handoffs. MCP execution without context pollution. Agent orchestration with isolated context windows. The licence is MIT.
When your agent uses it
- Tasks that involve Subagents
Example prompts
- “/sub-agents”
Requirements
- Pre-approved tools (allowed-tools): Read, Write, Bash
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Single responsibility - One clear purpose per agent
- Restrict tools - Only grant what's needed
- Clear descriptions - Action-oriented, include "proactively"
- Version control - Check .claude/agents/ into git
What it can do on your machine
Read from SKILL.md and the folder at commit d07ff4b. 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:
ReadWriteBash
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
claude
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
Sub Agents loads about 929 tokens when it runs. Until then it costs about 23 tokens; SKILL.md has 178 words of instructions outside code blocks.
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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Write, Bash
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 parcadei/Continuous-Claude-v3 at commit d07ff4b, republished under its MIT licence (© parcadei). 178 words, ~929 tokens.
Download SKILL.mdSave it as
.claude/skills/sub-agents/SKILL.md (or your agent's skills folder).- name
- sub-agents
- description
- Create and configure Claude Code sub-agents with custom prompts, tools, and models
- allowed-tools
- Read, Write, Bash
- user-invocable
- false
Sub-Agents Reference
Create specialized AI agents with isolated contexts for specific tasks.
When to Use
- "How do I create a sub-agent?"
- "Configure agent tools"
- "What built-in agents exist?"
- "Agent model selection"
- "Agent chaining patterns"
Quick Start
Interactive (Recommended)
/agentsOpens menu to create, edit, and manage agents.
Manual Creation
mkdir -p .claude/agents
cat > .claude/agents/reviewer.md << 'EOF'
---
name: reviewer
description: Code review specialist. Use proactively after code changes.
tools: Read, Grep, Glob, Bash
model: sonnet
---
You are a senior code reviewer focusing on quality and security.
## Review Checklist
- Code clarity and naming
- Error handling
- Security vulnerabilities
- Test coverage
EOFCLI-Based
claude --agents '{
"reviewer": {
"description": "Code reviewer",
"prompt": "Review for quality and security",
"tools": ["Read", "Bash"],
"model": "sonnet"
}
}'Agent File Format
---
name: agent-name
description: When/why to use this agent
tools: Read, Edit, Bash # Optional, inherits all if omitted
model: sonnet # sonnet, haiku, claude-opus-4-5-20251101, inherit
---
System prompt content here...Configuration Fields
| Field | Required | Options |
|---|---|---|
name | Yes | lowercase, hyphens |
description | Yes | When to use |
tools | No | Tool list (inherits all if omitted) |
model | No | sonnet, haiku, claude-opus-4-5-20251101, inherit |
Built-In Agents
| Agent | Model | Tools | Purpose |
|---|---|---|---|
| General-purpose | Sonnet | All | Complex multi-step tasks |
| Plan | Sonnet | Read-only | Plan mode research |
| Explore | Haiku | Read-only | Fast codebase search |
Model Selection
| Model | Speed | Best For |
|---|---|---|
| Haiku | Fastest | Search, quick lookups |
| Sonnet | Fast | Most tasks (default) |
| Opus | Slower | Complex reasoning |
Tool Combinations
# Code Reviewer (read-only)
tools: Read, Grep, Glob, Bash
# Debugger
tools: Read, Edit, Bash, Grep, Glob
# Implementer
tools: Read, Write, Edit, Bash, GlobExample Agents
Code Reviewer
---
name: code-reviewer
description: Reviews code for quality and security. Use after code changes.
tools: Read, Grep, Glob, Bash
model: sonnet
---
Review code for:
- Security vulnerabilities
- Code quality issues
- Missing error handling
- Test coverage gaps
Output findings by priority: Critical > Warning > SuggestionDebugger
---
name: debugger
description: Debug errors and test failures.
tools: Read, Edit, Bash, Grep, Glob
model: inherit
---
Debugging process:
1. Capture error details
2. Identify failure location
3. Form hypotheses
4. Test and verify
5. Implement fixFile Locations
| Type | Location | Priority |
|---|---|---|
| Project | .claude/agents/ | Highest |
| User | ~/.claude/agents/ | Lower |
Advanced Patterns
Resumable Agents
[Agent returns agentId: "abc123"]
# Later: resume with context
claude -r "abc123" "Continue analysis"Agent Chaining
Use code-analyzer to find issues,
then use optimizer to fix themBest Practices
- Single responsibility - One clear purpose per agent
- Restrict tools - Only grant what's needed
- Clear descriptions - Action-oriented, include "proactively"
- Version control - Check
.claude/agents/into git
© parcadei, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/sub-agents of parcadei/Continuous-Claude-v3.
Open the folder on GitHubat commit d07ff4b
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in parcadei/Continuous-Claude-v3, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Sub Agents 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Sub Agents this skillparcadei/Continuous-Claude-v3 | 3.9k | 1 repos | ~929 | Automated safety check: Notes | MIT | |
| Claude Code Agent Developmentanthropics/claude-plugins-official | 38k | 7 repos | ~2.8k | Automated safety check: Pass | Apache-2.0 | |
| Subagent Driven DevelopmentAsvarox/allkaraoke | 261 | 37 repos | ~1.2k | Automated safety check: Pass | None | |
| Dispatching Parallel Agentsultralisp/ultralisp | 258 | 40 repos | ~1.5k | Automated safety check: Pass | None | |
| Paseo Advisor Second Opiniongetpaseo/paseo | 20k | 1 repos | ~756 | Automated safety check: Pass | Custom licence | |
| Task Observerrebelytics/one-skill-to-rule-them-all | 3.2k | 1 repos | ~12k | Automated safety check: Pass | CC-BY-4.0 |
Similar skills
- Official
Subagent Driven Development
Asvarox/allkaraoke
A skill your agent uses when executing implementation plans with independent tasks in the current session
Dispatching Parallel Agents
ultralisp/ultralisp
A skill your agent uses when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
Paseo Advisor Second Opinion
getpaseo/paseo
Launches one separate agent through Paseo to give a second opinion on the current task, with a self-contained briefing and no permission to edit files.
Task Observer
rebelytics/one-skill-to-rule-them-all
Monitors task execution for skill improvement opportunities.
O2 Review Loop
openobserve/openobserve
Splits a change into planner, coder and independent reviewer roles: you confirm a spec, a subagent implements it, and a separate reviewer checks each round's local WIP commit.
More from parcadei/Continuous-Claude-v3
All 141 skills in this repoCompound Learnings
parcadei/Continuous-Claude-v3
Transform session learnings into permanent capabilities (skills, rules, agents).
Debug Hooks
parcadei/Continuous-Claude-v3
Systematic hook debugging workflow. An agent skill from parcadei/Continuous-Claude-v3.
Tldr Deep
parcadei/Continuous-Claude-v3
Full 5-layer analysis of a specific function. An agent skill from parcadei/Continuous-Claude-v3.
Gradient Methods
parcadei/Continuous-Claude-v3
Problem-solving strategies for gradient methods in optimization
Math
parcadei/Continuous-Claude-v3
Unified math capabilities - computation, solving, and explanation.
Math Model Selector
parcadei/Continuous-Claude-v3
Routes problems to appropriate mathematical frameworks using expert heuristics
Related
Categories
Questions about Sub Agents
What does Sub Agents do?
Create and configure Claude Code sub-agents with custom prompts, tools, and models. Sub Agents is an agent skill from parcadei/Continuous-Claude-v3.
When should I use Sub Agents?
Sub Agents fits situations like: tasks that involve Subagents.
How do I install Sub Agents in Claude Code?
Run `npx skills add parcadei/Continuous-Claude-v3 --skill sub-agents -a claude-code`. Or copy the skill folder (.claude/skills/sub-agents in parcadei/Continuous-Claude-v3) into .claude/skills/sub-agents in your project. Claude Code loads it when a task matches its description.
How do I install Sub Agents in Codex?
Run `npx skills add parcadei/Continuous-Claude-v3 --skill sub-agents -a codex`. Or copy the skill folder (.claude/skills/sub-agents in parcadei/Continuous-Claude-v3) into .agents/skills/sub-agents in your project. Codex loads it when a task matches its description.
Can I use Sub Agents 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 parcadei/Continuous-Claude-v3 --skill sub-agents -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sub-agents, .gemini/skills/sub-agents, .github/skills/sub-agents and .opencode/skills/sub-agents in your project.
What does Sub Agents need to run?
Going by SKILL.md and its folder, Sub Agents needs the command-line tools its instructions call (claude). Its frontmatter pre-approves these tools: Read, Write, Bash.
Does Sub Agents 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 Sub Agents safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Sub Agents use?
Sub Agents 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 Sub Agents use?
About 929 tokens (SKILL.md is roughly 3.7k 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 Sub Agents?
Skills that share tags, products or a category with Sub Agents: Claude Code Agent Development (anthropics/claude-plugins-official, 38k stars), Subagent Driven Development (Asvarox/allkaraoke, 261 stars), Dispatching Parallel Agents (ultralisp/ultralisp, 258 stars) and Paseo Advisor Second Opinion (getpaseo/paseo, 20k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Sub Agents?
parcadei (a GitHub user) maintains it in parcadei/Continuous-Claude-v3, which has 3,943 GitHub stars. The repository holds 141 skills in this directory. The repository was last updated on January 26, 2026.
Source: parcadei/Continuous-Claude-v3 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.