betomuniz.com WebMCP audit

Name: betomuniz.com WebMCP audit
Creator: ora

Rescan

audited Aug 28, 2026in 4s

60/ 100

3 tools registered. Strongest in usefulness, weakest in human experience.

WebMCP use60

Usefulness100

Human experience0

about:blank

No agent run recorded yet.

No steps recorded

Tools

list_contacts

List Beto Muniz's contact channels — both social network profiles (LinkedIn, GitHub, YouTube, Newsletter) and direct contact endpoints (email). Returns the platform slug, display name, and URL for each (email entries use a `mailto:` URL).Answers a question. Declared read only.

pagehttps://betomuniz.com/

implementation

viaimperative

entry pointnavigator

registered after502ms

executepresent

api surfaceTakes no parameters.

annotations

read onlytrue

destructivenot declared

idempotentnot declared

open worldnot declared

untrusted contentnot declared

titlenot declared

3 findings

failCanonical entry point

0 / 4

Every tool registers through the deprecated navigator.modelContext alias; move them to document.modelContext before the alias is removed.

fix

// Use the canonical entry point - navigator.modelContext is deprecated.
document.modelContext.provideContext({ tools: [/* ... */] });

failSchema validity

1.7 / 5

2 of 3 tools declare an input schema an agent cannot read: list_contacts declares no input schema.

list_contacts: declares no input schema; list_blog_posts: declares no input schema

fix

{
  name: "list_contacts",
  inputSchema: { type: "object", properties: { /* ... */ }, required: [] }
}

warningHuman parity

0 / 8

3 of 3 tools run through the JavaScript API with no visible counterpart, so the person co-browsing cannot see what the agent is offered. Declarative forms (or at least a title annotation) close the gap.

list_contacts, list_blog_posts, send_contact_email

fix

<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="list_contacts" tooldescription="...">
  <!-- the same action, as UI -->
</form>

tool json

{
  "name": "list_contacts",
  "description": "List Beto Muniz's contact channels — both social network profiles (LinkedIn, GitHub, YouTube, Newsletter) and direct contact endpoints (email). Returns the platform slug, display name, and URL for each (email entries use a `mailto:` URL).",
  "inputSchema": null,
  "annotations": {
    "readOnlyHint": true
  }
}

Findings

WebMCP use

60 / 100 · weight 50

passTools registered

4 / 4

3 tools registered across 1 page.

failReal-browser eligible

0 / 8

The page's code registers these tools, but a real visitor's browser does not get them yet: WebMCP needs a native modelContext or a current origin trial token, and this page has neither.

passRegistration timing

4 / 4

Every measured tool registered within 501.7000000476837ms of navigation.

toollist_blog_posts

failCanonical entry point

0 / 4

Every tool registers through the deprecated navigator.modelContext alias; move them to document.modelContext before the alias is removed.

toollist_contacts

fix

// Use the canonical entry point - navigator.modelContext is deprecated.
document.modelContext.provideContext({ tools: [/* ... */] });

failSchema validity

1.7 / 5

2 of 3 tools declare an input schema an agent cannot read: list_contacts declares no input schema.

toollist_contacts

list_contacts: declares no input schema; list_blog_posts: declares no input schema

fix

{
  name: "list_contacts",
  inputSchema: { type: "object", properties: { /* ... */ }, required: [] }
}

passSchema quality

4 / 4

All 3 tool schemas describe their parameters and stay within Chrome's size guidance.

passStub detection

5 / 5

All 3 tools declare an execute handler.

warningAnnotations present

3.3 / 4

1 of 3 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.

toolsend_contact_email

send_contact_email

fix

{
  name: "send_contact_email",
  annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true }
}

passAnnotation mismatch

3 / 3

No tool claims to be read-only while its name says it writes (2 declared hints checked).

warningUntrusted content hint

0 / 2

2 of 2 tools look like they return text written by other people but declare no untrustedContentHint, so an agent will treat the response as the site speaking.

toollist_blog_posts

list_blog_posts: post, user; send_contact_email: message, reply, user

fix

{ name: "list_blog_posts", annotations: { untrustedContentHint: true } }

passRegistration errors

2 / 2

No tool registration threw during the capture.

warningToolchange coherence

1 / 2

3 tools were registered but the page never dispatched a toolchange event, so an agent subscribed to registry updates never learns they exist.

fix

document.modelContext.dispatchEvent(new Event("toolchange"));

not applicableInjection surface

0 / 3

The injection-surface model hop returned no usable result, so tool contracts were not reviewed for injection surface.

Usefulness

100 / 100 · weight 30

passNaming quality

2 / 2

All 3 tool names are consistent, verb-led, and within Chrome's size guidance.

not applicableDescription quality

0 / 6

The description-quality model hop returned no usable result, so descriptions were not rated.

not applicableTool selection

0 / 14

The tool-selection model hop returned no usable result.

not applicableCoverage vs. site type

0 / 8

This tool set does not place the site in a category with a known expected tool shape, so there is no coverage baseline to score it against.

Human experience

0 / 100 · weight 20

warningHuman parity

0 / 8

toollist_contacts

list_contacts, list_blog_posts, send_contact_email

fix

<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="list_contacts" tooldescription="...">
  <!-- the same action, as UI -->
</form>

not applicablePage experience

0 / 12

The page-experience model hop returned no usable result, so the page was not graded.

Tool selection

The tool-selection model hop returned no usable result.

how this was captured

chrome: 148.0.7778.96
capture shim: v1
spec snapshot: 2026-08
mode: fast
pages: 1
tools: 3
run time: 4s
finished: Aug 28, 2026