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App -> Agent explicit integration/manifest?

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#242 4 comments 1 reaction 0 assignees View on GitHub

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
25/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Quiet
Tech stack
javascript, web-dev
Domain
api, design

Research direction

Start by reading the WebMCP proposal and discussion around registering tools and how agents invoke them; the issue does not name specific files or tests. Identify whether browser UI for choosing an agent provider and a way for pages to detect available handlers belong in scope. Done means the scope and expected integration flow are clearly decided.

Written by the indexing model from the issue text.

Description

As best as I can tell, most of WebMCP is around the plumbing of exposing in-page capabilities through an API to Agent(s) (either external, browser-supplied or in-page).

Is the page->agent triggering flow in-scope (or did I miss it)?

I "built" a CVE analysis tool with built in LLM for exploring CVE data (mostly because I had some questions I wanted to answer, I had tokens to burn and it felt like a fun exercise). Instead of building out a complicated UI for filtering the data and running the queries, I thought it would be a lot easier to just use a LLM to do all of that and just use a chat box.

Right now the built-in LLM runs on a single consumer GPU in my house and runs a pretty small Qwen model (tested best for generating the SQL queries) but I also have subscriptions to most of the AI providers, browser extensions installed for a lot of them and the "Ask Gemini" browser-provided UI for my Gemini subscription. Any one of these would be orders-of-magnitude better than the LLM I provide directly.

I can expose a WebMCP endpoint for everything the app-provided LLM uses and it should have 100% access to run the analysis engine but it doesn't feel like there are plans for how to make that a seamless experience for the user.

Optimally, registering the WebMCP tools would be able to trigger some sort of browser UI that lets the user pick a provider to use (extension or browser native UI) but it would be cleanest if I could know that the current user's browser had some way to handle that so I could offer UI to steer them to click a button to use their own LLM and hide the built-in chat window when the external chat is being used.

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Forks
328
Avg merge
2d 15h
Merged PRs (30d)
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Getting set up

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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