--- title: "Chrome WebMCP origin trial" canonical: "https://canmyagentuse.com/harnesses/chrome-webmcp-preview" contentKind: "harness" locale: "en" description: "Google Chrome's preview WebMCP implementation, represented as an exact experimental browser-agent surface." llmSummary: "Chrome documents WebMCP through an origin trial. This column is limited to that preview and does not imply stable or universal Gemini in Chrome support." publishedAt: "2026-08-28T00:00:00.000Z" updatedAt: "2026-08-28T00:00:00.000Z" verifiedAt: null tags: ["desktop","chrome","webmcp","preview"] --- # Chrome WebMCP origin trial Chrome documents WebMCP through an origin trial. This column is limited to that preview and does not imply stable or universal Gemini in Chrome support. - HTML: https://canmyagentuse.com/harnesses/chrome-webmcp-preview - JSON: https://canmyagentuse.com/api/v1/harnesses/chrome-webmcp-preview.json - Markdown: https://canmyagentuse.com/harnesses/chrome-webmcp-preview.md This exact column represents the Chrome WebMCP origin trial documented by the Chrome team. It does not claim that WebMCP is enabled by default in stable Chrome or available to every Gemini in Chrome user. ## Exact surface - Family: Chrome - Provider: Google - Surface: desktop - Execution: local - Target type: release - Default environment: preview-enabled - Tracks: current - Product site: https://developer.chrome.com/docs/ai/agents - Brand reference: [Google Chrome](/provider-marks#chrome) ## Current support summary - Reviewed: 7/114 - Supported: 3 - Partial: 4 - Unsupported: 0 - Unknown: 107 - Not applicable: 0 - Unique public sources: 5 - Latest current evidence: 2026-08-28 ## Capability family summaries Family summaries are derived from atomic child records; no umbrella compatibility value is authored. - [Agent Skills](/features/agent-skills.md): derived current family progress; 0/7 supported or partial; 0/7 reviewed - [Collaboration](/features/collaboration-and-portability.md): derived current family progress; 0/5 supported or partial; 0/5 reviewed - [File and media inputs](/features/file-inputs.md): derived current family progress; 0/6 supported or partial; 0/6 reviewed - [Model Context Protocol](/features/mcp.md): derived current family progress; 0/24 supported or partial; 0/24 reviewed - [Models and context](/features/models-and-context.md): derived current family progress; 0/12 supported or partial; 0/12 reviewed - [Persistent instructions](/features/instructions.md): derived current family progress; 0/4 supported or partial; 0/4 reviewed - [Plugin systems](/features/plugins.md): derived current family progress; 0/7 supported or partial; 0/7 reviewed - [Pricing, usage, and limits](/features/usage-and-reliability.md): derived current family progress; 0/4 supported or partial; 0/4 reviewed - [Security and privacy](/features/data-security-controls.md): derived current family progress; 0/8 supported or partial; 0/8 reviewed - [Subagents](/features/subagents.md): derived current family progress; 0/10 supported or partial; 0/10 reviewed - [WebMCP](/features/webmcp.md): derived current family progress; 7/7 supported or partial; 7/7 reviewed ## Atomic capability assertions Unknown means insufficient published evidence; it does not mean unsupported. - [Agent Plugins failure isolation](/features/agent-plugin-failure-isolation.md): current unknown - [Agent Plugins packaged MCP](/features/agent-plugin-mcp.md): current unknown - [Agent Plugins packaged skills](/features/agent-plugin-skills.md): current unknown - [Agent Plugins portable manifest](/features/agent-plugin-core.md): current unknown - [Agent Skills core and discovery](/features/skills.md): current unknown - [Agent Skills manual invocation](/features/skill-manual-invocation.md): current unknown - [Agent Skills progressive loading](/features/skill-progressive-loading.md): current unknown - [Agent Skills references and assets](/features/skill-references-assets.md): current unknown - [Agent Skills scripts](/features/skill-scripts.md): current unknown - [AGENTS.md root instructions](/features/agents-md.md): current unknown - [Artifact export](/features/artifact-export.md): current unknown - [Audio file input](/features/audio-file-input.md): current unknown - [Audit logs](/features/audit-logs.md): current unknown - [Automatic context compaction](/features/automatic-context-compaction.md): current unknown - [Background agents](/features/background-agents.md): current unknown - [Browser automation](/features/browser-automation.md): current unknown - [Code execution](/features/code-execution.md): current unknown - [Computer use](/features/computer-use.md): current unknown - [Concurrent subagents](/features/subagent-concurrency.md): current unknown - [Connectors](/features/connectors.md): current unknown - [Context compaction controls](/features/context-compaction-controls.md): current unknown - [Context usage](/features/context-usage-visibility.md): current unknown - [Context window](/features/context-window.md): current unknown - [Conversation export](/features/conversation-export.md): current unknown - [Conversation sharing](/features/conversation-sharing.md): current unknown - [Custom instructions](/features/custom-instructions.md): current unknown - [Data residency](/features/data-residency.md): current unknown - [Data retention controls](/features/data-retention-controls.md): current unknown - [Diffs and patches](/features/diffs-and-patches.md): current unknown - [Document input](/features/office-document-input.md): current unknown - [Encryption key management](/features/encryption-key-controls.md): current unknown - [File upload limits](/features/upload-limits.md): current unknown - [Human approval](/features/human-approval.md): current unknown - [Image input](/features/image-input.md): current unknown - [Local models](/features/local-models.md): current unknown - [Long-term memory](/features/long-term-memory.md): current unknown - [MCP Apps](/features/mcp-apps.md): current unknown - [MCP cancellation](/features/mcp-cancellation.md): current unknown - [MCP client role](/features/mcp-client-role.md): current unknown - [MCP elicitation](/features/mcp-elicitation.md): current unknown - [MCP legacy HTTP and SSE](/features/mcp-legacy-sse.md): current unknown - [MCP list-changed notifications](/features/mcp-list-changed.md): current unknown - [MCP logging](/features/mcp-logging.md): current unknown - [MCP OAuth authorization](/features/mcp-oauth.md): current unknown - [MCP progress notifications](/features/mcp-progress.md): current unknown - [MCP prompt-list notifications](/features/mcp-prompts-list-changed.md): current unknown - [MCP prompts](/features/mcp-prompts.md): current unknown - [MCP Registry metadata](/features/mcp-registry.md): current unknown - [MCP resource subscriptions](/features/mcp-resource-subscriptions.md): current unknown - [MCP resources](/features/mcp-resources.md): current unknown - [MCP revision compatibility](/features/mcp-revision.md): current unknown - [MCP roots](/features/mcp-roots.md): current unknown - [MCP sampling](/features/mcp-sampling.md): current unknown - [MCP server instructions](/features/mcp-server-instructions.md): current unknown - [MCP server role](/features/mcp-server-role.md): current unknown - [MCP stdio transport](/features/mcp-stdio.md): current unknown - [MCP Streamable HTTP](/features/mcp-streamable-http.md): current unknown - [MCP task listing](/features/mcp-task-listing.md): current unknown - [MCP tasks](/features/mcp-tasks.md): current unknown - [MCP tools](/features/mcp-tools.md): current unknown - [Model fallback](/features/model-fallback.md): current unknown - [Model selection](/features/model-selection.md): current unknown - [Multi-file edit](/features/multi-file-edit.md): current unknown - [Native plugin system](/features/native-plugins.md): current unknown - [Nested AGENTS.md instructions](/features/nested-agents-md.md): current unknown - [Nested subagents](/features/nested-subagents.md): current unknown - [Offline operation](/features/local-only-mode.md): current unknown - [Organization policy controls](/features/admin-policy-controls.md): current unknown - [Output token limit](/features/output-token-limit.md): current unknown - [PDF input](/features/pdf-documents.md): current unknown - [Per-subagent model selection](/features/subagent-model-selection.md): current unknown - [Plans and pricing](/features/plan-pricing-disclosure.md): current unknown - [Plugin marketplace](/features/plugin-marketplace.md): current unknown - [Plugin vendor extensions](/features/plugin-vendor-extensions.md): current unknown - [Project rules](/features/native-rules.md): current unknown - [Project-scoped Agent Skills](/features/skill-project-scope.md): current unknown - [Prompt cache controls](/features/prompt-cache-controls.md): current unknown - [Prompt cache telemetry](/features/prompt-cache-telemetry.md): current unknown - [Prompt caching](/features/prompt-cache-reuse.md): current unknown - [Pull request integration](/features/git-pull-requests.md): current unknown - [Rate limits and quotas](/features/rate-limit-disclosure.md): current unknown - [Realtime voice](/features/realtime-voice.md): current unknown - [Reasoning effort controls](/features/reasoning-effort-controls.md): current unknown - [Role-based access control (RBAC)](/features/role-based-access.md): current unknown - [Sandbox network access](/features/sandbox-network.md): current unknown - [Scheduled runs](/features/scheduled-runs.md): current unknown - [Screenshots](/features/screenshots.md): current unknown - [Secrets management](/features/secrets-management.md): current unknown - [Session resume](/features/resumable-runs.md): current unknown - [Shared projects](/features/shared-projects.md): current unknown - [Streaming output](/features/streaming-output.md): current unknown - [Structured outputs](/features/structured-output.md): current unknown - [Subagent context](/features/subagent-context-isolation.md): current unknown - [Subagent delegation](/features/subagent-delegation.md): current unknown - [Subagent management](/features/subagent-lifecycle-controls.md): current unknown - [Subagent MCP access](/features/subagent-mcp-access.md): current unknown - [Subagent permissions](/features/subagent-approval-boundaries.md): current unknown - [Subagent results](/features/subagent-result-handoff.md): current unknown - [Subagent write access](/features/subagent-write-access.md): current unknown - [Terminal commands](/features/terminal.md): current unknown - [Training data controls](/features/training-data-controls.md): current unknown - [Usage metering](/features/usage-metering.md): current unknown - [User-scoped Agent Skills](/features/skill-user-scope.md): current unknown - [Video input](/features/video-input.md): current unknown - [Web fetch](/features/web-fetch.md): current unknown - [WebMCP declarative form tools](/features/webmcp-declarative-tools.md): current partial - [WebMCP execution cancellation](/features/webmcp-cancellation.md): current supported - [WebMCP imperative tools](/features/webmcp-imperative-tools.md): current partial - [WebMCP permissions policy](/features/webmcp-permissions-policy.md): current supported - [WebMCP security annotations](/features/webmcp-security-annotations.md): current supported - [WebMCP tool discovery](/features/webmcp-tool-discovery.md): current partial - [WebMCP tool execution](/features/webmcp-tool-execution.md): current partial - [Workspace files](/features/workspace-files.md): current unknown - [Workspace search](/features/workspace-search.md): current unknown