Features

The whole loop — in one window.

Every capability Tendril ships with, what it does, and why it matters. For the buying decision, see Pricing. For the data backing the claims, see the 120-trial A/B study.

Why Tendril

Built Different. By Design.

Tendril isn't another chat window — it runs your whole project. AI agents that remember your codebase, a task board that updates itself, and your code that stays local by default.

50%lower planning costs
76%less redundant work
98%fewer discovery calls
Pro

Knowledge Graph

Tendril indexes your codebase and remembers decisions, patterns, and conventions across projects. Planning costs drop by half. Each session makes the next one cheaper.

Master + Parallel Agents

One master agent plans your project and coordinates parallel sub-agents. Free tier runs 2 agents at once. Pro removes the cap — limited only by your hardware and API.

AI Task Board

Your Kanban board fills itself. Cards move from Backlog to Done as agents work. Priority-based scheduling runs P1 tasks first, then P2 in parallel, then P3.

Pro

Live Preview & Annotation

See your app render in a live iframe while agents build it. Draw annotations on screenshots and submit them as agent feedback.

Bring Your Own API Key (BYOK)

Use your own API key from Anthropic, OpenAI, or Google. Native Claude Code CLI integration included. You pay your provider directly — Tendril adds zero markup.

Security & Quality Audit

Injection detection across 35 patterns. Scope enforcement, command blocking, budget caps. Pro adds a full audit pipeline: every subtask quality-scored, gaps auto-fixed, then a senior-level review before anything ships.

Tendril Kanban board with AI-assigned task cards

AI Task Board

Your Kanban board fills itself. Tasks flow from Backlog → In Progress → Done as AI agents work. Priority scheduling runs P1 first, then P2/P3 in parallel.

Tendril security panel blocking an injection attempt

Security Monitoring

35 injection patterns detected in real-time. Scope enforcement, command blocking, and budget caps keep agents safe. Every action is logged and auditable.

Tendril quality audit scores on subtasks

Quality Audits

Pro

Every subtask is quality-scored by a senior-level AI reviewer. Critical issues are auto-fixed before code ships. Nothing ships without passing audit.

Tendril plan review interface showing subtask approval

Plan Review

Review AI-generated plans before a single line of code is written. Approve, reject, or edit any subtask. You stay in control of the architecture.

Tendril parallel agent execution on the Kanban board

Parallel Agents

Multiple AI agents work simultaneously on different subtasks. P1 tasks run first, then P2 and P3 in parallel. Hardware and API keys are the only limits.

Pro features marked above require a Pro subscription.

Ready to see the tiers?

Free with BYOK. Starter unlocks the Medium pipeline. Pro unlocks everything — and founding pricing is locked for life.