Welcome to Assumer
Introduction
Assumer is an AI coding agent for your terminal and desktop, built by 4Born Solutions on OpenCode. It works inside your existing codebase: it reads the repo, plans changes, edits files, runs commands and tests, and shows you the diff to review.
- Two agents: build (default, full tools) and plan (read-only); press Tab to switch
- Built-in tools: bash, read, edit, write, patch, grep, glob, list, webfetch and more
- Per-tool permissions (allow / ask / deny), with /undo and /redo for every change
- Project rules in Assumer.md (AGENTS.md and CLAUDE.md work too) and MCP servers via assumer mcp add
Install
npm i -g @4born-solutions/assumer
Agents & Tools
Build and plan agents, plus subagents for research
Permissions
Allow, ask or deny per tool and command
Rules & MCP
Assumer.md rules and MCP servers
How Assumer Works
Install the CLI
Run npm i -g @4born-solutions/assumer (pnpm and bun work too) on macOS, Windows or Linux.
Sign In
Run assumer login and finish the device sign-in in your browser. Models run through your Assumer account.
Run Your First Task
Run assumer in your project and describe a change. Press Tab to plan first with the read-only plan agent.
Review & Commit
Check the diff with /diff, use /undo if needed, then commit and ship with your existing pipeline.