product Defcode
The terminal that works in parallel.
Defcode is an agentic CLI that plans, builds, designs and reviews — spawning sub-agents that work side by side while a live rail shows every task and every cent.
free tier · no card · $50/mo for everything
usage
tasks · parallel
engineer
writer
researcher
01 · Modes
Four modes. One keystroke apart.
One agent, four postures. Hit Tab and Defcode changes how it behaves — from read-only planning to shipping code — without losing the thread.
Edits files, runs commands, fixes its own test failures. Every destructive action passes a permission gate first.
Walks the repo, maps dependencies and proposes a scoped, step-by-step plan. No file changes until you approve.
Turns a rough spec into component trees, UI flows and architecture sketches — before a line of code exists.
Walks your diff or PR line by line. Flags bugs, security holes and dead code as one-line findings with fixes.
02 · Personalities & sub-agents
One CLI. A whole team inside.
Pick who shows up to work. Each personality spawns its own sub-agents, so the engineer can refactor while the writer drafts the changelog and the researcher audits your dependencies — all in the same session.
defcode
your session · one prompt
engineer
sub-agents: 3 running idle · spawn on demand
writer
sub-agents: 3 running idle · spawn on demand
researcher
sub-agents: 3 running idle · spawn on demand
personality · 01
Engineer
Reads the codebase like a senior hire. Plans, builds, tests and reviews — the personality you ship with.
personality · 02
Writer
Changelogs, PR descriptions, docs and release notes — written from the actual diff, not from memory.
personality · 03
Researcher
Crawls codebases, docs and the web. Comes back with a brief, sources attached, before anyone writes code.
every sub-agent appears in the task rail the moment it spawns — watch the work, not the spinner
03 · Under the hood
Everything you'd build if you had a year.
The plumbing serious tools are built on — language servers for real code intelligence, MCP for your stack, checkpoints for fearless edits, and privacy that holds up to a security review.
LSP under the hood
Real symbols, references and diagnostics from language servers — not regex guesses over text.
Any model, your call
75+ providers. Frontier, open-source or local — switch mid-session, bring your own keys or use ours.
AGENTS.md rules
Your conventions, written once. Every agent and sub-agent reads them before touching a file.
MCP servers
Plug external tools straight into the agent — databases, browsers, internal APIs, anything with an MCP server.
Share a session
One link sends the whole conversation — prompts, diffs, decisions — for teammates to replay.
Undo anything
Every change is checkpointed. /undo rolls the repo back, /redo brings it forward. No fear, no stash.
Themes & keybinds
A TUI that feels like yours — themes, layouts and every keybind fully remappable.
Permission gates
Nothing destructive runs without explicit approval. Allowlist the safe stuff, gate the rest.
Private by default
Your code is never retained and never trained on. Point it at a local model and nothing leaves the machine.
04 · Pricing
$50. Not $200.
The leading terminal agent tops out at $200 a month. Defcode does more — more modes, more models, more visibility — for a quarter of that. Flat.
| compare | Defcode | Claude Code Max |
|---|---|---|
| Price per month | $50 flat | $200 |
| Modes | Build · Plan · Design · Review | Default · Plan |
| Personalities | Engineer · Writer · Researcher | Not available |
| Usage & task rail in the TUI | Built in, always on | Not available |
| Model choice | 75+ providers, local models | Single vendor |
| Parallel sub-agents | Unlimited, live in the rail | Limited |
| Session share links | Included | Not available |
Defcode Pro
no seats math · no token anxiety
- Every mode, every personality, unlimited sub-agents
- Usage rail with live spend — never a surprise bill
- 75+ models included, local models free forever
- Free tier to start — no card, no trial clock
upgrade when the free tier feels small
defcode · get started
Open a terminal. Hire a team.
One install command, your repo, and a rail full of agents already working. The free tier needs no card.
macOS · Linux · Windows (WSL) · works with any git repo