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.
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.
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.
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.
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.
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.
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.
Quality Audits
ProEvery subtask is quality-scored by a senior-level AI reviewer. Critical issues are auto-fixed before code ships. Nothing ships without passing audit.
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.
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.
Simple, Honest Pricing
Download free. Add your own API key from Anthropic, OpenAI, or Google. You pay your AI provider directly — Tendril is free.
Free Tier
Free Forever
- Bring Your Own API Key (BYOK)— Anthropic, OpenAI, or Google — you pay your provider directly
- 1 active project
- 2 parallel sub-agents— same-priority tasks run concurrently
- Full pipeline— discovery, planning, execution, commit
- Diff viewer & code review
- Security monitoring— injection detection, scope enforcement, quarantine
- Auto-verify on edits— syntax check after every file change
- MCP server support
- Community support
Pro Tier
Billed monthly, cancel anytime
- Everything in Free
- Unlimited projects (up to 25 active)— archive and start new anytime
- Unlimited parallel agents— no Tendril cap — limited only by your hardware + API
- Knowledge Graph— indexes your codebase, cuts planning costs by 50%PRO
- Quality audit pipeline— auto-scored, auto-fixed, senior-level final reviewPRO
- Tendy chat— AI orchestration partner — routes tasks automaticallyPRO
- GitHub integration— clone, branch, push, open PRsPRO
- Live preview & annotation— see your app render, draw feedbackPRO
- Analytics dashboard— cost breakdown, quality scores, completion statsPRO
- Execution levers— pattern extraction, error memory, scope pre-read, rich specsPRO
- Priority support
Real savings, measured across 250+ trials
The Knowledge Graph, quality audit pipeline, and execution levers compound savings every session. By month 2, Pro costs less than the LLM savings it generates.
Compare Plans
$0/mo
$29/mo
Frequently Asked Questions
Everything you need to know before getting started.
What is BYOK and how do I get started?
What does the free tier include?
How does the Knowledge Graph work?
Can I use my Claude Code subscription instead of a raw API key on Pro?
Can I cancel Pro at any time?
Is my code ever sent to Tendril's servers?
What's the difference between Free and Pro for running multiple projects?
Install free — no credit card required. Add your own API key and start building.