waisa.ca WebMCP audit

Rescan
audited Aug 28, 2026in 6s
65/ 100

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

WebMCP use71
Usefulness98
Human experience0
about:blank

No agent run recorded yet.

No steps recorded

Tools

/
find_waisa_stockists: warning

find_waisa_stockists

Find Canadian retailers and cafés that stock Waísa guayusa. Every stockist carries the full ready-to-drink can lineup (Vibrant Peach, Golden Pineapple, Wildberry Mint). Search by city, province name or code (Ontario, ON), postal code with or without a space, store name, flavour, or rank nearby stores by latitude and longitude.Answers a question. Declared read only.
pagehttps://waisa.ca/
implementation
viaimperative
entry pointdocument
registered after796ms
executepresent
api surface
locationoptional
productoptional
latitudeoptional
longitudeoptional
limitoptional
annotations
read onlytrue
destructivenot declared
idempotentnot declared
open worldnot declared
untrusted contentfalse
titlenot declared
2 findings
warningSchema quality
1.3 / 4
8 of 12 tool schemas are harder for an agent to use than they need to be: find_waisa_stockists declares no required list, so an agent cannot tell which parameters are mandatory.
find_waisa_stockists: declares no required list, so an agent cannot tell which parameters are mandatory; learn_about_guayusa_energy: declares no required list, so an agent cannot tell which parameters
fix
{
  name: "find_waisa_stockists",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}
warningHuman parity
0 / 8
12 of 12 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.
find_waisa_stockists, learn_about_guayusa_energy, search_catalog, browse_store, get_product
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="find_waisa_stockists" tooldescription="...">
  <!-- the same action, as UI -->
</form>
tool json
{
  "name": "find_waisa_stockists",
  "description": "Find Canadian retailers and cafés that stock Waísa guayusa. Every stockist carries the full ready-to-drink can lineup (Vibrant Peach, Golden Pineapple, Wildberry Mint). Search by city, province name or code (Ontario, ON), postal code with or without a space, store name, flavour, or rank nearby stores by latitude and longitude.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "location": {
        "type": "string",
        "description": "A Canadian city, province (Ontario or ON), postal code (V6B 1A1 or V6B1A1), \"City, ON\", store name, or street."
      },
      "product": {
        "type": "string",
        "description": "Optional flavour name. Every stockist carries Vibrant Peach, Golden Pineapple, and Wildberry Mint."
      },
      "latitude": {
        "type": "number",
        "minimum": -90,
        "maximum": 90,
        "description": "Latitude used with longitude to rank stores by distance."
      },
      "longitude": {
        "type": "number",
        "minimum": -180,
        "maximum": 180,
        "description": "Longitude used with latitude to rank stores by distance."
      },
      "limit": {
        "type": "integer",
        "minimum": 1,
        "maximum": 20,
        "description": "Maximum number of stockists to return. Defaults to 5."
      }
    },
    "additionalProperties": false
  },
  "annotations": {
    "readOnlyHint": true,
    "untrustedContentHint": false
  }
}
Showing find_waisa_stockists

Findings

WebMCP use

71 / 100 · weight 50
passTools registered
4 / 4
12 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. The page does carry an origin-trial token, but it does not grant WebMCP on this origin.
passRegistration timing
4 / 4
Every measured tool registered within 880.7999999523163ms of navigation.
toolcancel_cart
passCanonical entry point
4 / 4
All 12 tools register on the canonical document.modelContext entry point.
passSchema validity
5 / 5
All 12 tools declare a structurally valid object input schema.
warningSchema quality
1.3 / 4
8 of 12 tool schemas are harder for an agent to use than they need to be: find_waisa_stockists declares no required list, so an agent cannot tell which parameters are mandatory.
toolfind_waisa_stockists
find_waisa_stockists: declares no required list, so an agent cannot tell which parameters are mandatory; learn_about_guayusa_energy: declares no required list, so an agent cannot tell which parameters
fix
{
  name: "find_waisa_stockists",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}
passStub detection
5 / 5
All 12 tools declare an execute handler.
passAnnotations present
4 / 4
All 12 tools declare a readOnlyHint, so an agent knows which calls change state.
passAnnotation mismatch
3 / 3
No tool claims to be read-only while its name says it writes (12 declared hints checked).
warningUntrusted content hint
0 / 2
1 of 1 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.
toolmanage_orders
manage_orders: user, customer
fix
{ name: "manage_orders", annotations: { untrustedContentHint: true } }
passRegistration errors
2 / 2
No tool registration threw during the capture.
warningToolchange coherence
1 / 2
12 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

98 / 100 · weight 30
warningNaming quality
1.8 / 2
Tool naming makes selection harder than it needs to be: 3 names do not start with a verb (learn_about_guayusa_energy).
toollearn_about_guayusa_energy
fix
{ name: "learn_about_guayusa_energy" /* 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.
passCoverage vs. site type
8 / 8
The tool set covers the whole core commerce flow: search or browse the catalog, read one item in detail, add to or read the cart, start checkout or place an order.

Human experience

0 / 100 · weight 20
warningHuman parity
0 / 8
12 of 12 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.
toolfind_waisa_stockists
find_waisa_stockists, learn_about_guayusa_energy, search_catalog, browse_store, get_product
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="find_waisa_stockists" 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
12
run time
6s
finished
Aug 28, 2026