sparks

SPECTRE Labs

Experimental and power-user features for the SPECTRE workflow framework.

Build Loop

Automated task execution CLI that runs Claude Code (or Codex) in a loop, completing one parent task per iteration with built-in code review and validation.

Install

cd build-loop
pipx install -e .
pipx inject spectre-build pyyaml pydantic

Usage

# Interactive mode (prompts for inputs)
spectre-build

# Flag-based
spectre-build --tasks tasks.md --context scope.md --max-iterations 10

# With code review + validation (recommended)
spectre-build --tasks tasks.md --context scope.md --validate

# Plan mode — scope docs to build-ready manifest
spectre-build --plan --context scope.md design_notes.md

# Plan then auto-start build
spectre-build --plan --context scope.md --build

# Using a pipeline YAML definition
spectre-build --pipeline .spectre/pipelines/full-feature.yaml --tasks tasks.md

# From a manifest file (YAML frontmatter)
spectre-build docs/tasks/feature-x/build.md

# Resume interrupted session
spectre-build resume

# Start the web GUI
spectre-build serve

Features

• Planning pipeline — Autonomous scope-to-manifest planning with complexity assessment and human-in-the-loop clarifications
• Code review gate — Automated review between build and validation catches issues early
• Phase-aware builds — Multi-phase task plans get reviewed and validated per phase boundary
• Validation cycles — Post-build gap analysis (D!=C!=R) with automatic remediation
• Multi-agent — Pluggable backends (Claude Code, Codex)
• Pipeline mode — Stage-based execution from YAML definitions with configurable signals
• Manifest mode — Self-documenting builds via YAML frontmatter in .md files
• Session resume — Pick up where you left off after interruptions
• TDD integration — Loads spectre-tdd skill for test-driven execution
• Web GUI — FastAPI server with real-time WebSocket streaming

Planning Pipeline

--plan transforms scope documents into a build-ready manifest. Instead of writing tasks by hand, provide scope/design docs and the pipeline produces a structured task breakdown you can feed directly into the build loop.

spectre-build --plan --context scope.md

The pipeline runs 6 stages autonomously:

Research → Assess → [Create Plan] → Create Tasks → Plan Review → Req Validate
                                                                       |
                                                          PLAN_VALIDATED → build.md
                                                    CLARIFICATIONS_NEEDED → pause

Research — Explores the codebase, identifies key files, architecture patterns, and dependencies. Writes task_context.md.

Assess — Scores complexity and routes to the right depth:

• LIGHT — Simple tasks skip plan generation, go straight to task breakdown
• STANDARD — Normal planning depth
• COMPREHENSIVE — Deep analysis with architecture diagrams and risk matrices

Create Plan — Writes an implementation plan with technical approach, critical files, and change boundaries. Skipped for LIGHT tasks.

Create Tasks — Breaks the plan into phased, ordered tasks with YAML frontmatter for the build manifest.

Plan Review — Catches over-engineering, unnecessary abstractions, and scope creep.

Req Validate — Cross-references the scope docs against the plan and tasks. Two outcomes:

• PLAN_VALIDATED — Everything covered. Writes build.md manifest. Pipeline ends.
• CLARIFICATIONS_NEEDED — Gaps found. Writes a clarifications file, saves session, and pauses for human input.

Human-in-the-Loop Clarifications

When the pipeline needs input, it pauses and notifies you:

📋 CLARIFICATIONS NEEDED
   Edit: docs/tasks/main/clarifications/scope_clarifications.md
   Then: spectre-build resume

Edit the file to answer the questions, then resume. The update_docs stage incorporates your answers and produces the final manifest.

Plan to Build

After planning completes, start the build:

# Manual — review artifacts first, then run the manifest
spectre-build docs/tasks/main/build.md

# Automatic — chain directly with --build flag
spectre-build --plan --context scope.md --build

# Interactive — plan mode prompts "Start build now?" on completion
spectre-build
# → Mode [build/plan]: plan

Output artifacts land in docs/tasks/{branch}/:

docs/tasks/main/
├── build.md                          # Build manifest (YAML frontmatter)
├── task_context.md                   # Research findings
├── specs/
│   ├── plan.md                       # Implementation plan
│   └── tasks.md                      # Task breakdown
└── clarifications/
    └── scope_clarifications.md       # (if needed)

Build Pipeline

With --validate, spectre-build runs a 3-stage pipeline: