Neo Harness

Unified Agent Harness Architect & Workflow Generator

This skill integrates three core Agent engineering domains (Harness Assessment, Execution Protocol, and Orchestration Architecture) to analyze a target project and generate a tailored, strict AGENTS.md file (Harness Workflow Specification).

Core Principle

Agent = Model (Reasoning & Generation) + Harness (Guides + Sensors + Gates + Topologies)

The generated AGENTS.md acts as the single source of truth governing all AI Agents operating in the project.

[!IMPORTANT] Template Compliance & Size Constraint: Any created or modified AGENTS.md MUST strictly adhere to the design specification of assets/AGENTS.md.template (containing 4 mandatory sections: Project Overview, Commands Table, 9-stage Workflow Mermaid loop, and Forbidden Antipattern Redlines Table) and MUST NOT exceed 32 KiB (32,768 bytes).

Quick Automation (Non-Interactive Generator Script)

To quickly analyze a repository and generate or preview an AGENTS.md file, run the non-interactive script:

# Preview generated content (dry-run)
python3 skills/neo-harness/scripts/generate-agents-md.py --target-dir /path/to/repo --dry-run

# Generate AGENTS.md directly in target repository
python3 skills/neo-harness/scripts/generate-agents-md.py --target-dir /path/to/repo --force

# Validate existing AGENTS.md against assets/AGENTS.md.template design specification
python3 skills/neo-harness/scripts/generate-agents-md.py --target-dir /path/to/repo --validate

Workflow SOP

Step 1 — Perceive Target Repository

1. Inspect project root and structure manually or via scripts/generate-agents-md.py:
   • Configuration files: package.json, pyproject.toml, Cargo.toml, go.mod, Makefile, etc.
   • Build, lint, and test toolchains.
   • Existing guidelines: AGENTS.md, CLAUDE.md, GEMINI.md, README.
   • CI workflows: .github/workflows/, GitLab CI, etc.
2. Identify primary languages, test suites, and fast local feedback sensors.

Step 2 — Reason & Synthesize Harness Rules

Load detailed reference knowledge as needed:

• Harness Assessment & Sensors: Read references/harness-assessment.md to rate harnessability and define computational vs. inferential sensors.
• Execution Protocol & SOP: Read references/execution-protocol.md to enforce the 5 Harness Laws, dual-loop SOP, zero-fake pass, and antipattern rules.
• Orchestration Topologies: Read references/orchestration-patterns.md to select appropriate routing, chaining, or human-in-the-loop (HITL) gates.

Step 3 — Generate & Format AGENTS.md

Use scripts/generate-agents-md.py with assets/AGENTS.md.template as the strict baseline template. All created or modified AGENTS.md files MUST strictly contain the following 4 structural sections in order:

1. ## 1. Project Overview: Primary tech stack, modular architecture, and coding conventions.
2. ## 2. Commands: Standard markdown table (Command Type, Exact Command Line, Purpose / Scope) listing test, typecheck, lint, build, or syntax check commands.
3. ## 3. Workflow: The mandatory 9-stage closed loop Mermaid diagram (graph TD from Step1 to Step9) followed by the 9 numbered step definitions.
4. ## 4. Forbidden Antipattern Redlines: Standard markdown table (Forbidden Action, Why It Is Prohibited, Required Behavior) specifying non-negotiable redlines.

Step 4 — Verify Template Compliance & Quality Gate

1. Validate structural compliance against assets/AGENTS.md.template:
   • Run python3 skills/neo-harness/scripts/generate-agents-md.py --target-dir /path/to/repo --validate.
2. Check the file size of the generated AGENTS.md:
   • Must be <= 32,768 bytes.
   • If over 32 KiB, prune redundant descriptions or move extended reference docs to separate files under .agents/ or docs/.
3. Validate syntax and markdown formatting.