MantisCoder
An autonomous coding agent that understands your whole repository.
A desktop coding agent with a tree-sitter code graph, an agentic task loop, sub-agents, and native control of the browser, terminal and git.
MantisCoder indexes a repository with tree-sitter into a dependency and call graph, then plans and executes coding tasks against that graph — not against a context window. Every task follows explicit rules for code changes, file operations, refactoring, testing and completion.
Sub-agents take on bounded work, the browser control module verifies UI changes, and the terminal and git modules run builds, tests and commits. System prompts and task rules are plain text files you can edit.
- Editable system prompts: coding assistant, browser control, terminal control, git operations
- Task rules for code changes, file operations, refactoring, testing and completion
- Interactive HTML graphs of the repository
- Bug manager, test lab, kanban board and task manager surfaces
- Built-in browser, connector services and MCP connections
- Local SQLite project memory
Code graph
Tree-sitter analysis builds dependency, call and radial graphs of the whole project.
Agentic loop
Plan → act → evaluate with explicit task evaluation rules and completion criteria.
Sub-agents
Bounded sub-tasks delegated with their own instructions and scope.
Browser, terminal, git
Native control modules verify UI, run builds and tests, and commit.
Radial graph exploration of a repository
Dependency analyzer
Kanban board for agent tasks
Task manager
Tools and MCP connections
Relax, Watcher and Coder modes
- Analysis
- tree-sitter, multi-language
- Memory
- Local SQLite
- Control
- Browser, terminal, git
- Platform
- Desktop, Go + native shell
Ready to put AI on your own infrastructure?
Tell us about your environment, your data boundary and your latency target. We will design the pipeline with you and bring it live within days, not months.