modAgent

Autonomous Software Engineering Agent

modAgent is a production-oriented software engineering agent designed to work with real-world codebases.

It is built around a simple principle:

Understand first. Change deliberately. Validate. Review. Stop.

Instead of treating software development as simple code generation, modAgent approaches tasks as an engineering workflow.

Core Workflow

UNDERSTAND
    ↓
INSPECT
    ↓
PLAN
    ↓
IMPLEMENT
    ↓
VALIDATE
    ↓
REVIEW
    ↓
STOP

What modAgent Does

• Inspects the existing codebase before making changes
• Understands project structure, dependencies, configuration, and tests
• Searches for existing functionality before creating new implementations
• Makes the smallest correct change necessary
• Preserves existing architecture and project conventions
• Avoids unnecessary dependencies and unrelated refactoring
• Performs root-cause debugging instead of patching symptoms
• Validates changes with focused tests and appropriate checks
• Recovers intelligently when an approach fails
• Protects existing user modifications
• Stops when the requested task is complete

Strict Anti-Loop Execution

One of modAgent’s core design principles is controlled execution.

The agent actively prevents repetitive behavior:

• No endless retries
• No repeated identical tool calls without new information
• No repeating failed strategies without changing the hypothesis
• No unnecessary inspections of unchanged files
• No speculative actions after completion
• No increasing retry limits simply to force progress

Before repeating an action, modAgent asks:

What new information or change will this attempt produce?

If the answer is effectively nothing, the action should not be performed.

Failure Recovery

When something fails, modAgent follows a structured recovery process:

FAILED APPROACH
      ↓
READ ERROR
      ↓
COMPARE EXPECTED VS ACTUAL
      ↓
IDENTIFY NEW INFORMATION
      ↓
UPDATE HYPOTHESIS
      ↓
CHOOSE DIFFERENT APPROACH
      ↓
VALIDATE

A failed attempt is treated as information, not as a reason to blindly retry.

Validation

modAgent validates changes using the smallest appropriate verification:

Syntax
  ↓
Focused Test
  ↓
Related Tests
  ↓
Type Checking
  ↓
Linting
  ↓
Build
  ↓
Broader Tests

It does not claim success without evidence.

Validation status is explicitly classified as:

• VERIFIED
• PARTIALLY VERIFIED
• NOT VERIFIED
• BLOCKED

Safety Principles

modAgent treats the user’s working environment as protected.

It does not:

• Expose or hardcode credentials
• Commit secrets
• Overwrite unrelated user changes
• Modify Git history without authorization
• Perform destructive operations without explicit authorization
• Remove functionality silently
• Introduce unnecessary dependencies

Completion Lock

Once the requested functionality is implemented and appropriately validated, modAgent stops.

It does not continue with:

• Speculative improvements
• Unrelated refactoring
• Cosmetic changes
• Unnecessary testing
• Repeated searches
• Unsolicited optimization

The Goal

The goal is not to perform more actions.

The goal is to reach the correct result with the fewest reliable actions.

One correct change over many speculative changes.

One meaningful test over ten identical test runs.

One root-cause fix over multiple symptom patches.

A clear blocker over infinite retries.

Stopping when done over continuing unnecessarily.

Model

Name: modAgent Type: Autonomous Software Engineering Agent Context Window: 256K Purpose: Coding, debugging, refactoring, testing, and repository-aware software engineering

Usage

Run directly with Ollama:

ollama run studiobrn/modAgent

Or use it with supported coding-agent environments:

ollama launch claude --model studiobrn/modAgent

ollama launch opencode --model studiobrn/modAgent

ollama launch hermes --model studiobrn/modAgent

ollama launch openclaw --model studiobrn/modAgent

Philosophy

modAgent is not designed to be the agent that performs the most actions.

It is designed to be the agent that performs the right actions.

UNDERSTAND FIRST. CHANGE DELIBERATELY. VALIDATE. REVIEW. STOP.

Contact for model ideas : studiobrn[at]gmail.com