thataicollection.com WebMCP audit

Name: thataicollection.com WebMCP audit
Creator: ora

Rescan

audited Aug 28, 2026in 10s

57/ 100

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

WebMCP use55

Usefulness100

Human experience0

about:blank

No agent run recorded yet.

No steps recorded

Tools

search_ai_tools

Search the AI Collection directory for AI tools matching a query and open the results page.Takes an action on the site.

pagehttps://thataicollection.com/

implementation

viaimperative

entry pointnavigator

registered after2456ms

executepresent

api surface

queryrequired

annotations

read onlynot declared

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

failAnnotations present

0 / 4

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

search_ai_tools, view_ai_tool, view_category

fix

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

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.

search_ai_tools, view_ai_tool, view_category

fix

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

tool json

{
  "name": "search_ai_tools",
  "description": "Search the AI Collection directory for AI tools matching a query and open the results page.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "query": {
        "type": "string",
        "description": "Search query, e.g. \"image generation\""
      }
    },
    "required": [
      "query"
    ]
  },
  "annotations": {}
}

Findings

WebMCP use

55 / 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.

warningRegistration timing

2 / 4

The slowest tool took 2455.699999809265ms to register, past the 1000ms an agent reading the registry at first paint would wait for.

toolview_ai_tool

view_ai_tool: registered at 2455.699999809265ms

fix

// Register tools as soon as they're ready, not behind a deferred/async chunk.
document.modelContext.provideContext({ tools: [/* ... */] });

failCanonical entry point

0 / 4

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

toolsearch_ai_tools

fix

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

passSchema validity

5 / 5

All 3 tools declare a structurally valid object input schema.

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.

failAnnotations present

0 / 4

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

toolsearch_ai_tools

search_ai_tools, view_ai_tool, view_category

fix

{
  name: "search_ai_tools",
  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

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

toolsearch_ai_tools

search_ai_tools, view_ai_tool, view_category

fix

<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="search_ai_tools" 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: 10s
finished: Aug 28, 2026