Oleg Isonen
d186d24501
This update helps AI agents understand, audit, and visually verify Webstudio projects more reliably. It also adds clearer guidance for expressions, Collections, screenshots, and responsive rendered audits. ### Audit complete projects - Run one `audit` command across accessibility, SEO, security, assets, styles, and performance. - Audit the whole project or focus on a specific page, scope, or severity. - Receive stable findings with locations, explanations, and recommended fixes. - Continue large result sets through pagination without repeating general guidance. ### Audit the rendered website - Build and inspect the generated website, rather than relying only on stored project data. - Check every static page at representative mobile, tablet, and desktop widths. - Use one suitable viewport inside each configured breakpoint range. - Reuse the same browser and resize pages between captures for substantially faster audits. - Process multiple pages concurrently while keeping resource use bounded. - Supply concrete examples for dynamic routes such as blog posts. - Review and confirm unusually large screenshot plans before they run. ### Find visual and performance problems Rendered audits can detect: - Horizontal page overflow. - Broken images. - Images loaded eagerly below the fold. - Images that are much larger than their rendered size. - Render-blocking resources. - Legacy font formats. - Pages that fail to load or redirect somewhere unexpected. - Pages captured before their layout becomes stable. Detailed screenshots, measurements, failures, and timing evidence are saved locally for further inspection. ### Capture generated pages directly - Capture a project route with `webstudio screenshot --path /route`. - Automatically generate and start a temporary production-style preview. - Stop the temporary preview after the screenshot is captured. - Return navigation, responsive layout, and page-size evidence with JSON output. - Allow external image domains needed by the generated preview. ### Reuse generated previews - Cache generated preview builds when the project has not changed. - Reuse preview dependencies across regenerations. - Keep preview dependencies isolated from the user’s project dependencies. - Surface preview build and startup failures with useful diagnostic output. - Include local project assets in generated previews. ### Author Collections correctly - Explain when Collection is required for arrays and objects. - Guide agents to bind the complete iterable instead of one item or the response wrapper. - Explain how Collection repeats its children for every entry. - Explain current-item and current-key scope. - Preserve Webstudio’s generated Collection parameters. - Guide agents to use stable values for repeated interactive components. ### Write expressions with fewer mistakes - Add a dedicated `webstudio://project/expressions` reference. - Document expression scope, supported syntax, and supported methods. - Explain how resources, variables, Collections, actions, and `system` values are accessed. - Distinguish fixed values from runtime expressions. - Provide valid examples for text, props, resource URLs, headers, query parameters, and bodies. - Warn agents that valid syntax does not guarantee that runtime data has the expected shape. ### Improve agent discovery - Make Collection and expression workflows discoverable through `meta.guide`. - Return Collection-specific instructions through `components.get`. - Point relevant command schemas to the expression reference. - Keep detailed guidance available without placing it in every tool response. ### Improve audit reliability - Report which rendered captures passed, found issues, failed, or were skipped. - Distinguish planning, preview, capture, and cleanup failures. - Include actionable retry instructions with rendered failures. - Preserve completed evidence when part of an audit fails. - Detect stale or conflicting preview servers more clearly. - Support cancellation and bounded capture timeouts. ### Improve packaged CLI verification - Add a release-shaped CLI smoke test. - Install the packed CLI in an isolated temporary project. - Fail on peer-dependency warning floods. - Verify preview, screenshots, MCP calls, rendered audits, and generated assets. - Confirm that generic React Router previews do not include Docker-only image dependencies. - Keep CLI and MCP stdout machine-readable while progress remains on stderr. ## User Impact Agents can now audit a real rendered Webstudio site, inspect responsive behavior, find concrete visual and performance problems, and provide evidence for their conclusions. They also receive much clearer instructions when turning API data into repeated content or writing dynamic expressions.
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.