singularity-forge/gitbook/features/headless.md
ace-pm b29c12d5e5 refactor(native): rename gsd_parser.rs to forge_parser.rs
Final rebrand: rename remaining Rust source file to complete the gsd → forge
transition. All parser references already use forge_parser after earlier commits.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-15 14:58:21 +02:00

2.3 KiB

Headless & CI Mode

sf headless runs SF commands without a terminal UI — designed for CI pipelines, cron jobs, and scripted automation.

Basic Usage

# Run auto mode
sf headless

# Run a single unit
sf headless next

# With timeout for CI
sf headless --timeout 600000 auto

# Force a specific phase
sf headless dispatch plan

# Stream all events as JSONL
sf headless --json auto

Creating Milestones Headlessly

# From a context file
sf headless new-milestone --context brief.md --auto

# From inline text
sf headless new-milestone --context-text "Build a REST API with auth"

# Pipe from stdin
echo "Build a CLI tool" | sf headless new-milestone --context -

CLI Flags

Flag Default Description
--timeout N 300000 (5 min) Overall timeout in milliseconds
--max-restarts N 3 Auto-restart on crash (0 to disable)
--json Stream events as JSONL to stdout
--model ID Override model for this session
--context <file> Context file for new-milestone (use - for stdin)
--context-text <text> Inline context for new-milestone
--auto Chain into auto mode after milestone creation

Exit Codes

Code Meaning
0 Complete
1 Error or timeout
2 Blocked

Instant State Query

sf headless query returns a JSON snapshot of project state — no AI session, instant response (~50ms):

sf headless query | jq '.state.phase'
# "executing"

sf headless query | jq '.next'
# {"action":"dispatch","unitType":"execute-task","unitId":"M001/S01/T03"}

sf headless query | jq '.cost.total'
# 4.25

Any /sf subcommand works as a positional argument: sf headless status, sf headless doctor, etc.

MCP Server Mode

sf --mode mcp runs SF as a Model Context Protocol server over stdin/stdout, exposing all SF tools to external AI clients:

sf --mode mcp

Compatible with Claude Desktop, VS Code Copilot, and any MCP host.

Auto-Restart

In headless mode, crashes trigger automatic restart with exponential backoff (5s → 10s → 30s cap, default 3 attempts). SIGINT/SIGTERM bypasses restart. Combined with crash recovery, this enables true overnight unattended execution.