Secure, self-hosted AI development

AI-built code you can actually trust.

Describe a feature in plain language. An agent plans it with you, builds it in an isolated environment, and delivers a tested pull request for your review — all on infrastructure you control.

Tests passed12 scenarios, 0 regressions
Preview deployedtemporary, per run
🔒app.yggdrasil.cfd/projects/acme-storefront/features/saved-payment-methods

Saved payment methods

Plan review
Agent

I’ll spec out saved payment methods. First — should we support more than one saved card per customer, or just one?

You

Multiple cards, with one marked default.

Agent

Got it. I’ll use a Stripe SetupIntent to tokenize the card and store only the payment method id + last4/brand. Writing the ADR now.

preview livetests 12/12isolated environmentdraft PR pending review
How it works

Six checkpoints between a description and production

Nothing skips a step. Nothing merges unreviewed or untested.

01

Describe

Give the feature a title and any context. That's the entire ask.

02

Plan & design review

You lead the planning. Scope, edge cases, and constraints get written up as a decision record before a single line of code is touched.

03

Agent builds

Approved plans get built unattended, inside an isolated environment with no access beyond what that job needs.

04

Automated tests

Test scenarios run against the build automatically, catching regressions before anyone has to go looking for them.

05

Agent & user review

The agent checks its diff against the approved plan first. Then everything lands as a real pull request against a live preview — your team reviews it, requests changes, or sends it back.

06

Merge

Merge when it's ready. Deployment to your target environment is automated from there.

Security & control

Built to keep unsafe changes out

Every job runs in isolation. Every credential is scoped to its task. Every change is reviewed and tested before it ships.

Isolated environments, every run

Each job runs in its own ephemeral Kubernetes pod, torn down when it finishes. Nothing persists, nothing leaks between runs, projects, or teams.

🔐

Scoped, short-lived permissions

Repo access is granted per installation. Jobs get short-lived tokens scoped to exactly what they're doing — never a standing, all-access credential.

🔑

Secrets, permissioned per environment

Encrypted at rest, decrypted only server-side. Production credentials stay out of preview and dev runs — each environment gets exactly the access it needs.

ADR

A decision record for every feature

Every design review ends in a written ADR, committed alongside the code it justifies. Nothing ships without a paper trail.

PR

Reviewed by the agent, then by you

The agent checks its own diff against the plan. Then every change lands as a draft PR your team reads, comments on, and approves.

Preview environments, automatically

Every run gets its own temporary deployment, so you can see the change working before you approve it — not just read a diff.

Automated deployments

Approved changes deploy through the same pipeline every time — no manual steps, no drift between environments.

Self-hosted, top to bottom

Run it on your own Kubernetes cluster, or a bundled dev environment. Your code, your containers, your infrastructure.

Automated test suites

Markdown test scenarios run against your deployment on a schedule, catching regressions before your team does.

No lock-in

Your keys. Your infra. Your GitHub.

Nothing here runs on an account, a cluster, or a model provider you don't already control.

BYOK

Bring your own keys

Connect OpenRouter, Anthropic, OpenAI, or a custom endpoint. Your API keys, your model choices, per job.

BYOI

Bring your own infra

Run it on your own Kubernetes cluster, or a bundled dev environment. Nothing lives on infrastructure you don't control.

BYOG

Bring your own GitHub

Sign in with the GitHub identity and repos you already have. No new account, no new access model to manage.

Safe by default

No unreviewed code. No standing access. No surprises.

Isolated, reviewed and tested, merged on your terms — without dictating your stack.

Yggdrasil is not
  • A code editor or IDE replacement
  • A CI/CD pipeline — it complements the one you have
  • A Jira/Linear-style project tracker
  • Opinionated about your tech stack
Yggdrasil is
  • A quality enforcement system for AI-built code
  • Isolated and permission-scoped, run by run
  • Strict about process, with zero opinion on your tech stack
  • Self-hosted on your own infrastructure, top to bottom

Ready to ship AI-built code you can trust?

Sign in with GitHub — no separate account to create.