notte.cc WebMCP audit

Name: notte.cc WebMCP audit
Creator: ora

Rescan

audited Aug 28, 2026in 5s

36/ 100

One tool registered. Strongest in WebMCP use, weakest in human experience.

WebMCP use50

Usefulness37

Human experience0

about:blank

No agent run recorded yet.

No steps recorded

Tools

openDocs

Open Notte documentation for a given topic (e.g. 'quickstart', 'concepts/agents'). Defaults to the docs homepage if no topic is given.Takes an action on the site.

pagehttps://www.notte.cc/

implementation

viaimperative

entry pointnavigator

registered after893ms

executepresent

api surface

topicoptional

annotations

read onlynot declared

destructivenot declared

idempotentnot declared

open worldnot declared

untrusted contentnot declared

titlenot declared

6 findings

passRegistration timing

4 / 4

Every measured tool registered within 892.5ms of navigation.

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: [/* ... */] });

warningSchema quality

0 / 4

1 of 1 tool schemas are harder for an agent to use than they need to be: openDocs declares no required list, so an agent cannot tell which parameters are mandatory.

openDocs: declares no required list, so an agent cannot tell which parameters are mandatory

fix

{
  name: "openDocs",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}

warningNaming quality

1 / 2

Tool naming makes selection harder than it needs to be: 1 name does not start with a verb (openDocs).

fix

{ name: "opendocs" /* short, unique, verb-based */ }

failAnnotations present

0 / 4

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

openDocs

fix

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

warningHuman parity

0 / 8

1 of 1 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.

openDocs

fix

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

tool json

{
  "name": "openDocs",
  "description": "Open Notte documentation for a given topic (e.g. 'quickstart', 'concepts/agents'). Defaults to the docs homepage if no topic is given.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "topic": {
        "type": "string",
        "description": "Docs slug or keyword appended to https://docs.notte.cc/. Omit for the docs homepage."
      }
    }
  },
  "annotations": {}
}

Findings

WebMCP use

50 / 100 · weight 50

passTools registered

4 / 4

1 tool 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 892.5ms of navigation.

toolopenDocs

failCanonical entry point

0 / 4

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

toolopenDocs

fix

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

passSchema validity

5 / 5

All 1 tool declare a structurally valid object input schema.

warningSchema quality

0 / 4

1 of 1 tool schemas are harder for an agent to use than they need to be: openDocs declares no required list, so an agent cannot tell which parameters are mandatory.

toolopenDocs

openDocs: declares no required list, so an agent cannot tell which parameters are mandatory

fix

{
  name: "openDocs",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}

passStub detection

5 / 5

The one registered tool declares an execute handler.

failAnnotations present

0 / 4

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

toolopenDocs

openDocs

fix

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

not applicableAnnotation mismatch

0 / 3

No tool declares a readOnlyHint, so there is no safety claim to contradict.

not applicableUntrusted content hint

0 / 2

No tool's contract suggests it returns text written by somebody other than the site, so there is nothing to flag as untrusted.

passRegistration errors

2 / 2

No tool registration threw during the capture.

warningToolchange coherence

1 / 2

1 tool was 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

37 / 100 · weight 30

warningNaming quality

1 / 2

Tool naming makes selection harder than it needs to be: 1 name does not start with a verb (openDocs).

toolopenDocs

fix

{ name: "opendocs" /* short, unique, verb-based */ }

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.

failCoverage vs. site type

2.7 / 8

The tool set covers 1 of the 3 things an agent needs on a docs site; it cannot search or browse the catalog or navigate the documentation tree.

Human experience

0 / 100 · weight 20

warningHuman parity

0 / 8

toolopenDocs

openDocs

fix

<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="opendocs" 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: 1
run time: 5s
finished: Aug 28, 2026