fix(browser_eval): align tool args with Playwright MCP 0.0.75 schema (target fields + fill_form)#141
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@playwright/mcp 0.0.75 (current @latest) renamed the locator field across several tools, so the wrapper's old names fail upstream validation (InputValidationError): - browser_click / browser_type / browser_evaluate: ref -> target - browser_drag: startRef/endRef -> startTarget/endTarget Verified against the auto-generated tool docs in @playwright/mcp@0.0.75. Adds target/startTarget/endTarget inputs and forwards the new names, while keeping ref/startRef/endRef accepted as back-compat aliases (target = args.target ?? args.ref). Note: browser_fill_form's field-object shape also changed upstream but its exact schema could not be verified from the package, so it is intentionally left unchanged here. Refs #136
…0.75
Verified against the live @playwright/mcp@0.0.75 browser_fill_form schema
(via tools/list): each field is now
{ element?, target (req), name (req), type (req: textbox|checkbox|radio|
combobox|slider), value (req) }
replacing the old { selector, value }.
Update the user-facing schema and forward the new field names; accept
'selector' as a back-compat alias routed to 'target'
(target = f.target ?? f.selector). Completes the field-rename fix so
fill_form no longer fails upstream with InputValidationError.
gaojude
changed the title
feedthejim
approved these changes
Jun 1, 2026
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What
@playwright/mcp@0.0.75(current@latest, auto-installed by thebrowser_evalwrapper) renamed the locator field and changed thefill_formfield shape. The wrapper forwarded the old names, so calls failed upstream withInputValidationError.browser_clickreftargetbrowser_typereftargetbrowser_evaluatereftargetbrowser_dragstartRef/endRefstartTarget/endTargetbrowser_fill_form{ selector, value }{ element?, target, name, type, value }All names/shapes were verified against the live
@playwright/mcp@0.0.75server via an MCPtools/listintrospection (not just docs). Thefill_formfieldtypeis the enumtextbox | checkbox | radio | combobox | slider.How
click/type/evaluate/drag.fill_formfield schema to{ element?, target, name, type, value }and map it through.ref/startRef/endRefandfields[].selectoraccepted as back-compat aliases (target = args.target ?? args.ref,f.target ?? f.selector), so existing callers don't break.Verification
pnpm typecheck✅pnpm build✅pnpm test✅ (38/38)tools/listagainst@playwright/mcp@0.0.75Fixes #136