## Summary This update adds new MCP and CLI capabilities for project auditing, structured data, project-specific agent instructions, focused project search, safer bulk editing, image descriptions, font discovery, visual verification, and external registry inspection. ## New Capabilities ### Audit projects - Run a single `audit` command across accessibility, SEO, security, assets, styles, and performance. - Limit an audit to selected scopes, pages, or severity levels. - Receive stable findings with locations and suggested fixes. - Run rendered audits across desktop, mobile, and Builder breakpoint widths. - Detect horizontal overflow, broken images, oversized images, eager below-fold images, render-blocking resources, and legacy font formats. - Identify unused assets, tokens, CSS variables, local styles, and breakpoints. - Identify duplicate token declarations. - Detect accessibility issues involving names, labels, headings, landmarks, IDs, keyboard focus, ARIA, iframes, and autoplaying media. - Detect SEO issues involving titles, descriptions, language, social images, and structured data. - Detect unsafe new-tab links and write resources exposed during page rendering. ### Search an entire project - Search project text, labels, props, resources, assets, and styles through `search-project`. - Find relevant records without downloading and reparsing the full project snapshot. - Scope searches to the relevant project-data areas. ### Add validated JSON-LD - Add structured data with a dedicated JSON-LD component. - Place JSON-LD inside the page Head Slot. - Edit JSON in a purpose-built code editor. - Prevent structurally invalid JSON-LD from being saved. - Validate Schema.org types, properties, and values. - Find invalid, missing, unknown, deprecated, or incompatible structured data through the SEO audit. - Let agents discover the correct JSON-LD workflow without using page custom metadata or a generic HTML embed. ### Configure project-specific agent instructions - Add AI-agent instructions from the new **Agents** section in Project Settings. - Synchronize those instructions into a managed root `AGENTS.md`. - Update or remove the managed file automatically during project sync. - Protect existing user-owned `AGENTS.md` files from being overwritten. - Share the instructions with authenticated CLI and MCP agents. - Keep agent instructions out of publicly readable production bundles. ### Generate and manage image descriptions - Audit image assets for missing descriptions. - Let a vision-capable agent inspect each image in its rendered context. - Save generated descriptions to multiple image assets in one operation. - Mark images as intentionally decorative. - Reuse the saved asset description wherever the image is used. - Re-run the audit to verify that missing-description findings are resolved. ### Perform bounded bulk replacements - Replace matching literal text across selected pages with `replace-text`. - Replace matching fixed prop text with `replace-prop-text`. - Replace matching resource names or URLs with `replace-resource-text`. - Restrict replacements by page, instance, prop, resource, field, match mode, and maximum change count. - Leave dynamic expressions unchanged. ### Inspect element ancestry - Return an element’s direct parent in instance listings. - Request the complete ancestor chain when inspecting an element. - Understand tree placement without rebuilding the instance hierarchy from raw project data. ### Discover available fonts - List uploaded font families through `list-fonts`. - Discover available system font stacks. - Inspect font family, style, weight, format, and associated asset information before applying typography. ### Inspect external component registries - Inspect a local or remote shadcn-style registry item. - Read its description, files, dependencies, targets, and documentation. - Receive an explicit Webstudio compatibility report. - Inspect registry metadata without installing or executing external code. ### Capture generated project routes directly - Run `webstudio screenshot --path /route` against the configured project. - Generate a temporary production-style preview automatically. - Capture the requested route. - Stop the temporary preview after capture. - Avoid manually building and starting a preview for a single screenshot. ### Assert visual changes - Add expected text to screenshot comparisons. - Set maximum pixel mismatch limits. - Set minimum or maximum changed-region counts. - Assert whether overall brightness or a color channel moved in the expected direction. - Use these assertions as pass/fail evidence for visual changes. ### Require compatible CLI versions - Send the project-bundle contract version with CLI synchronization requests. - Stop incompatible CLI versions before they receive incomplete project data. - Tell users exactly how to update the CLI or run the latest version once. - Prevent older clients from silently dropping project settings. ## Upgrade Note This branch introduces a new synchronized project-bundle contract. Older CLI versions must update before synchronizing against the new API. ```sh npm install -g webstudio@latest ``` Or run the latest version once: ```sh npx webstudio@latest <command> ``` --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Protocol
@webstudio-is/protocol owns Webstudio data exchange protocols.
The project bundle is the external export/import artifact used by sync, local
.webstudio/data.json, project import, transferred asset files, and prebuild.
This package owns the assembled bundle schemas, transfer RPC payloads, and
bundle compatibility/version helpers.
Domain models such as pages, assets, and serialized builds remain owned by their domain packages and are composed here through schema-only entrypoints. Do not copy those schemas into this package.
Terminology
Project bundle is the authoritative external project artifact. It is used by
sync, .webstudio/data.json, project import, transferred asset files, and
prebuild.
Data envelope is a serialized single-key object whose key is a versioned
Webstudio marker, for example { "@webstudio/instance/v0.1": data }. The
envelope identifies the payload version and lets consumers detect malformed
Webstudio-owned data before falling back to other formats.
Transfer data is the domain payload inside a data envelope. Examples include
InstanceTransferData, InstancesTransferData, and PageTransferData.
Transfer data is portable and detached from a project; insertion/import remaps
ids and merges it into authoritative project state. Runtime-owned transfer
formats live in @webstudio-is/project-build/runtime/data-formats/*.
Clipboard data is a UI transport concern. Builder copy/paste may serialize transfer data into a data envelope and place it on the browser clipboard, but runtime and protocol code should name the reusable format as data envelope or transfer data, not clipboard.