Resources

Start here#

If you read three things, read these.

• WebMCP in Chromedeveloper.chrome.com

  The quickest way to see both APIs working and switch them on in your own Chrome.

• The explainergithub.com

  Why a page should hand agents tools instead of letting them click around, from the people designing it.

• Build tools for agentic workflowsdeveloper.chrome.com

  The best advice on shaping tools around what a person wants done, not around your buttons.

Build#

• Imperative APIdeveloper.chrome.com

  Start here when a tool needs app state or a network call.

• Declarative APIdeveloper.chrome.com

  The fastest win if you already have forms: a few attributes and they are tools.

• The draft specificationwebmachinelearning.github.io

  The answer when a guide and the browser disagree.

• Any site: @mcp-b/webmcp-polyfillgithub.com

  Ship tools today, even in browsers that have no WebMCP yet.

• React: usewebmcpgithub.com

  Tools that live and die with a component, so none outlive the UI they belong to.

• Angular: WebMCP supportangular.dev

  Declare tools from services and Signal Forms without wiring the browser API yourself.

• MCP clients: @mcp-b/globalgithub.com

  Lets MCP clients outside the browser reach the tools your page registers.

Test your tools#

• DevTools WebMCP paneldeveloper.chrome.com

  See every call an agent made and every schema error, without leaving DevTools.

• Model Context Tool Inspectorchromewebstore.google.com

  Run your tools by hand, or hand them to Gemini, to learn whether your descriptions make sense to a model.

• WebMCP Evalsgithub.com

  Chrome Labs' CLI checks that a model picks the right tool with the right inputs. Run it before you ship.

• Submit your sitewmcp.ai

  See your site the way a crawler does: every page we load and every tool we find.

• Read your listing as JSONwmcp.ai

  Check names, schemas and hints exactly as an agent reading our API gets them.

• Cloudflare Browser Rundevelopers.cloudflare.com

  Call your tools from a headless browser in the cloud, the way hosted agents will.

Ship safely#

• Tool securitydeveloper.chrome.com

  What each hint promises and when to mark output untrusted. Settle these before real users arrive.

• Agent security considerationsdeveloper.chrome.com

  How agents guard against prompt injection, and what that means for the text your tools return.

• The origin trialdeveloper.chrome.com

  Turns WebMCP on for your real visitors before it ships by default.

• Implementation statusgithub.com

  Which browsers and agents will actually see your tools today.

• Security and privacy questionnairegithub.com

  Hand this to your security review when they ask what WebMCP exposes.

Learn from live sites#

Tools we check every day that are worth copying: each is described, every input explained, the hints set, and the names consistent.

• Tasklettasklet.ai

  Pairs every list tool with a read tool, and each id input names the tool that produces it.

• Civic Datacivicdata.co.uk

  Descriptions say what the data does not show, like "not a risk score", so agents do not overclaim.

• Madrid Day Spamadrid-day-spa.com

  Tells the agent to check real availability before promising a time, then hands the booking back to the page.

• Corpuscorpuslaw.us

  Groups tools under law. and formation., and its inputs say which personal details never to send.

• Forterforter.com

  Uses both APIs, and its sales-lead tool tells the agent to confirm with the person before calling it.

Watch#

• WebMCP and the Agentic Webyoutube.com

  BlinkOn 21: the design reasoning, from the people building WebMCP in Chrome.

• Don't let AI agents push your buttonsyoutube.com

  Chrome for Developers makes the case for tools over clicking. A good one to show your team.

• Agents on the Web and in the Browseryoutube.com

  The agent side of WebMCP: how the tools on your page reach an agent.

• WebMCP is here (and you should care)youtube.com

  Syntax on what WebMCP changes for everyday web developers.

Talk to people#

• Spec issuesgithub.com

  Where design decisions actually get argued out. Search here before you file a bug.

• Web Machine Learning Community Groupw3.org

  Join to have a say in the standard. Anyone can.

• Chrome early preview programdeveloper.chrome.com

  Get new WebMCP features before release, and send feedback straight to the Chrome team.

• Chrome AI dev preview groupgroups.google.com

  Ask the Chrome team and other early developers when something changes under you.

• r/webmcpreddit.com

  See what other people are shipping, and ask the questions that feel too small for an issue.