Your live infrastructure map, synced from source.

Point ArcSync at your infrastructure-as-code repo and get a live, editable architecture diagram. No more screenshots in Figma. No more drift.

Connect a repo See an example diagram

Connect once. The diagram keeps up.

ArcSync redraws your diagram when the code changes, shows reviewers what each pull request touches, and keeps the layout and notes your team adds.

Redraws on every push.

Add the GitHub Action to your workflow and each push produces a fresh diagram. On Pro, the GitHub App does it with no workflow at all.

See what a PR changes.

The GitHub Action comments on each pull request with the resources it adds, removes or modifies. Pro names each one and highlights it on the diagram.

Your layout stays put.

Drag nodes and rename labels. When the code changes, new resources join the diagram and your edits stay where you left them.

Go back to any version.

On Pro, scrub back through earlier versions of a diagram to see how the architecture changed. Handy for incident reviews and onboarding.

Review it together.

See who has the diagram open and where their cursors are. Pin comment threads to resources, add sticky notes or sketch with the pen.

Embed it in your docs.

With the share link on, copy the interactive embed link from the Share dialog. Paste it into Notion or Confluence and choose Embed, and readers can pan and zoom the live diagram.

Parse the stack you already have.

Six engines. No cloud credentials required, and nothing ever runs in your account. Re-parse runs incrementally on push.

Terraform

HCL parsed natively — modules, variables, locals, and remote-state references resolved before render.

— Extensions.tf.tf.json.tfvars

CloudFormation

YAML and JSON templates, plus SAM and CDK-synthesized output. Cross-stack !ImportValue resolved across the workspace.

— Extensions.yaml.yml.json.template

AWS CDK

We run cdk synth in a per-language sandbox that never receives your cloud credentials — nothing touches your account.

— SDKsTSJSPYGOJAVAC#

Pulumi

We run pulumi preview in the same sandboxes — your cloud credentials are never needed, and nothing touches your account.

— SDKsTSPYGOJAVAC#

Azure ARM

Azure Resource Manager deployment templates — resources and their dependsOn edges mapped to the Azure services they deploy.

— Filesazuredeploy.jsonmainTemplate.json*.arm.json

Serverless Framework

Functions, events and the resources block of your service config, drawn as the cloud resources they become.

— Filesserverless.ymlserverless.yaml

Sample input · Terraform

resource "aws_lambda_function" "parser" {
  function_name = "parser-fn"
  runtime       = "nodejs22.x"
  handler       = "index.handler"
  role          = aws_iam_role.parser.arn
}

resource "aws_dynamodb_table" "diagrams" {
  name         = "diagrams"
  billing_mode = "PAY_PER_REQUEST"
  hash_key     = "id"
  attribute {
    name = "id"
    type = "S"
  }
}

resource "aws_apigatewayv2_api" "http" {
  name          = "arcsync-api"
  protocol_type = "HTTP"
  target        = aws_lambda_function.parser.arn
}

ArcSync resolves IAM and integration references and renders a three-node, two-edge diagram from the snippet above.

Help us build the tools your future needs.

Free

100 parses/month from the Action, CLI, or web
10 server-side CDK/Pulumi synths/month
20 diagrams
GitHub App install + PR comments
Public + private repos

Pro

Team

$49/user/mo

3-seat minimum
Pooled parses
Shared workspace (soon)

Contact sales

Enterprise

Custom

SSO + audit logs
SLA
On-prem deployment

Contact sales

Point us at a repo. Get a graph back.

Free for public Terraform, CloudFormation, CDK, Pulumi, ARM and Serverless repos. No credit card — just a free account. The diagram is editable, shareable, and stays synced as long as the repo is public.

Or run it in CI:GitHub Action