Marketplace claude-code-headless

Run Claude Code programmatically without interactive UI. Triggers on: headless, CLI automation, --print, output-format, stream-json, CI/CD, scripting.

install

source · Clone the upstream repo

git clone https://github.com/aiskillstore/marketplace

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/aiskillstore/marketplace "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/0xdarkmatter/claude-code-headless" ~/.claude/skills/aiskillstore-marketplace-claude-code-headless && rm -rf "$T"

manifest: skills/0xdarkmatter/claude-code-headless/SKILL.md

Claude Code Headless Mode

Run Claude Code from scripts without interactive UI.

Quick Start

# Basic headless execution
claude -p "Explain this code" --allowedTools "Read,Grep"

# JSON output for parsing
claude -p "List files" --output-format json

# Continue conversation
claude -p "Start analysis" --output-format json > result.json
session=$(jq -r '.session_id' result.json)
claude --resume "$session" "Now fix the issues"

Essential CLI Options

Flag	Description
`-p` , `--print`	Non-interactive (headless) mode
`--output-format`	text, json, stream-json
`-r` , `--resume`	Resume by session ID
`-c` , `--continue`	Continue most recent session
`--allowedTools`	Comma-separated allowed tools
`--disallowedTools`	Comma-separated denied tools
`--mcp-config`	Path to MCP server config JSON
`--verbose`	Enable verbose logging
`--append-system-prompt`	Add to system prompt

Permission Modes

Mode	Flag	Effect
Default	(none)	Prompt for permissions
Accept edits	`--permission-mode acceptEdits`	Auto-accept file changes
Bypass	`--permission-mode bypassPermissions`	Skip all prompts

Output Formats

Text (default)

claude -p "Hello"
# Outputs: Human-readable response

JSON

claude -p "Hello" --output-format json

{
  "type": "result",
  "subtype": "success",
  "result": "Hello! How can I help?",
  "session_id": "abc123",
  "total_cost_usd": 0.001,
  "duration_ms": 1234,
  "num_turns": 1
}

Stream-JSON

claude -p "Hello" --output-format stream-json
# Real-time JSONL output for each message

Common Patterns

Script with tool restrictions

claude -p "Analyze the codebase" \
  --allowedTools "Read,Grep,Glob" \
  --disallowedTools "Write,Edit,Bash"

CI/CD integration

claude -p "Review this PR diff" \
  --permission-mode acceptEdits \
  --output-format json \
  --append-system-prompt "Focus on security issues"

Multi-turn automation

session=$(claude -p "Start task" --output-format json | jq -r '.session_id')
claude --resume "$session" "Continue with step 2"
claude --resume "$session" "Finalize and report"

Error Handling

result=$(claude -p "Task" --output-format json)
if [[ $(echo "$result" | jq -r '.is_error') == "true" ]]; then
    echo "Error: $(echo "$result" | jq -r '.result')" >&2
    exit 1
fi

Official Documentation

https://code.claude.com/docs/en/headless - Headless mode reference
https://code.claude.com/docs/en/settings - Settings and permissions

Additional Resources

```
./references/cli-options.md
```
- Complete CLI flag reference
```
./references/output-formats.md
```
- Output format schemas
```
./references/integration-patterns.md
```
- CI/CD and scripting examples

See Also:

claude-code-hooks

for automation events,

claude-code-debug

for troubleshooting