FAQ
Access
Section titled “Access”How do I get Weld?
Section titled “How do I get Weld?”Weld is in private beta and invite-only. A project owner on a team’s hub invites you by email; your inviter sends you an install link: the hub’s welcome email has the install steps, and so does the Install Weld page on your hub once you’re signed in. These public docs don’t include installers. Not on a team yet? Request access.
Can I sign up by myself?
Section titled “Can I sign up by myself?”No. A hub only accepts people a project owner invited (weld invite <email>). Joining with an
address that has no invite gives WELD-E2032.
Requirements
Section titled “Requirements”What do I need?
Section titled “What do I need?”Two or more people, each with Claude Code on their own account, and an Unreal Engine 5.8
project (or start one with weld game new). Macs (Apple silicon) and Windows PCs both work as
nodes. The asset pipeline needs an NVIDIA GPU with 12 GB or more of VRAM somewhere on the team.
Which engines are supported?
Section titled “Which engines are supported?”Unreal Engine 5 with C++ and Blueprints, including Epic’s official Unreal MCP server. Weld’s engine layer is built so Unity and Godot can follow.
Do I need a GPU?
Section titled “Do I need a GPU?”Only one machine on the team needs one, for concept images and image-to-3D. Everyone else sends it jobs. Builds and smoke tests need Unreal, not a big GPU.
Privacy and data
Section titled “Privacy and data”Where do my code and assets live?
Section titled “Where do my code and assets live?”On your team’s hub: it hosts the game’s git repository and Git LFS objects, Work items, assets and telemetry. Agents run on your own machines under your own Claude accounts.
What does Weld send to the hub from Claude Code?
Section titled “What does Weld send to the hub from Claude Code?”Metrics and costs (tokens, cost, errors) always, so the team can see spend per person and agent.
Your prompt text and tool details only if you agree when joining (weld node telemetry --no-prompts turns it off at any time). Raw tool output is not captured. Diagnostic bundles are
redacted (no secrets, no prompt text) and only written when you ask.
Can a teammate run things on my computer?
Section titled “Can a teammate run things on my computer?”Only what you allow. Typed jobs (builds, smoke tests, asset jobs) from teammates whose keys you
trusted after comparing fingerprints run automatically; shell jobs need your approval in your
own terminal; agent runs never leave the submitter’s own machines. See
Jobs and trust.
Does my Claude subscription get used for someone else’s work?
Section titled “Does my Claude subscription get used for someone else’s work?”No. AI work never crosses subscriptions. A handoff passes the task; the recipient’s own agent does the work. The merge agent runs under the account of the person who is merging, and background agents under the node owner’s account, for their own work only.
How it works
Section titled “How it works”Does Weld lock files?
Section titled “Does Weld lock files?”Never. Anyone can edit any file. Weld prevents feature collisions by making Work visible, asking once about overlaps and predicting conflicts exactly with git.
What happens to binary assets like Blueprints and maps?
Section titled “What happens to binary assets like Blueprints and maps?”They can’t be merged line by line, so Weld warns early when two branches touch the same one, keeps logic in C++ and maps in One File Per Actor to make it rare, and, if it happens, shows both sides’ op logs and keeps both versions while a human picks one.
Will Weld ever block my Claude session?
Section titled “Will Weld ever block my Claude session?”No. Hooks fail open: if weld or the hub has a problem, Claude keeps working and shows a one-line
notice with an error code. The only thing that can pause an edit is the one-time overlap question,
and only once per overlap.
What if the hub goes down?
Section titled “What if the hub goes down?”Keep working. git, Unreal and Claude Code work without it, Work updates queue locally and reconcile on reconnect. Coordination, the merge queue and remote jobs pause until it’s back.
Can I push straight to main?
Section titled “Can I push straight to main?”Only the very first push of a repo. After that, changes land through the merge queue
(weld merge); the hub refuses direct pushes to main.
How big a team is it for?
Section titled “How big a team is it for?”Small teams: two to a handful of people, each running one or more agents.
How much does Weld cost?
Section titled “How much does Weld cost?”Pricing isn’t set yet; beta teams hear about it before anything changes. Your agents run on your
own Claude Code subscriptions, so Weld never resells model usage. weld ops costs shows Claude
spend per person, agent, model or machine.