baerskintactical.com WebMCP audit

Rescan
audited Aug 28, 2026in 6s
64/ 100

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

WebMCP use68
Usefulness99
Human experience0
about:blank

No agent run recorded yet.

No steps recorded

Tools

/us
get_product: fail

get_product

Fetch a single product (listing) by its slug for the current market and channel. Returns title, price, SKUs, and primary media.Takes an action on the site.
pagehttps://baerskintactical.com/us
implementation
viaimperative
entry pointdocument
registered after891ms
executepresent
api surface
listingSlugrequired
annotations
read onlynot declared
destructivenot declared
idempotentnot declared
open worldnot declared
untrusted contentnot declared
titlenot declared
2 findings
failAnnotations present
0 / 4
9 of 9 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
get_product, list_products_in_channel, view_cart, add_to_cart, remove_from_cart
fix
{
  name: "get_product",
  annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true }
}
warningHuman parity
0 / 8
9 of 9 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.
get_product, list_products_in_channel, view_cart, add_to_cart, remove_from_cart
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="get_product" tooldescription="...">
  <!-- the same action, as UI -->
</form>
tool json
{
  "name": "get_product",
  "description": "Fetch a single product (listing) by its slug for the current market and channel. Returns title, price, SKUs, and primary media.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "listingSlug": {
        "type": "string",
        "description": "Listing slug (URL segment) for the product"
      }
    },
    "required": [
      "listingSlug"
    ],
    "additionalProperties": false
  },
  "annotations": {}
}
Showing get_product

Findings

WebMCP use

68 / 100 · weight 50
passTools registered
4 / 4
9 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 890.7999999523163ms of navigation.
toolview_cart
passCanonical entry point
4 / 4
All 9 tools register on the canonical document.modelContext entry point.
passSchema validity
5 / 5
All 9 tools declare a structurally valid object input schema.
warningSchema quality
3.6 / 4
1 of 9 tool schemas are harder for an agent to use than they need to be: add_to_cart declares no required list, so an agent cannot tell which parameters are mandatory.
tooladd_to_cart
add_to_cart: declares no required list, so an agent cannot tell which parameters are mandatory
fix
{
  name: "add_to_cart",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}
passStub detection
5 / 5
All 9 tools declare an execute handler.
failAnnotations present
0 / 4
9 of 9 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
toolget_product
get_product, list_products_in_channel, view_cart, add_to_cart, remove_from_cart
fix
{
  name: "get_product",
  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
9 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

99 / 100 · weight 30
warningNaming quality
1.9 / 2
Tool naming makes selection harder than it needs to be: 1 name does not start with a verb (fill_shipping_address).
toolfill_shipping_address
fix
{ name: "fill_shipping_address" /* 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
9 of 9 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.
toolget_product
get_product, list_products_in_channel, view_cart, add_to_cart, remove_from_cart
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="get_product" 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
9
run time
6s
finished
Aug 28, 2026