vaanzari.com WebMCP audit

Rescan
audited Aug 28, 2026in 5s
59/ 100

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

WebMCP use63
Usefulness90
Human experience0
about:blank

No agent run recorded yet.

No steps recorded

Tools

/
scan_images_c2pa: warning

scan_images_c2pa

Scan every <img> on the current page for C2PA Content Credentials (content provenance metadata) and return a per-image summary: whether a manifest is present, the claim generator (the tool that produced or edited the image), the title, and the signer name. Use this to find which images on a page carry provenance data. Note: provenance is decoded but NOT cryptographically verified.Takes an action on the site.
pagehttps://vaanzari.com/
implementation
viaimperative
entry pointdocument
registered after227ms
executepresent
api surface
limitoptional
annotations
read onlynot declared
destructivenot declared
idempotentnot declared
open worldnot declared
untrusted contentnot declared
titlenot declared
3 findings
warningNaming quality
1 / 2
Tool naming makes selection harder than it needs to be: names mix kebab and snake conventions; 8 names do not start with a verb (scan_images_c2pa).
fix
{ name: "scan_images_c2pa" /* short, unique, verb-based */ }
warningAnnotations present
0.6 / 4
31 of 37 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
scan_images_c2pa, inspect_image_c2pa, search_sarees, get_saree, list_artisans
fix
{
  name: "scan_images_c2pa",
  annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true }
}
warningHuman parity
0 / 8
37 of 37 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.
scan_images_c2pa, inspect_image_c2pa, search-sarees, get-saree, compare-sarees
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="scan_images_c2pa" tooldescription="...">
  <!-- the same action, as UI -->
</form>
tool json
{
  "name": "scan_images_c2pa",
  "description": "Scan every <img> on the current page for C2PA Content Credentials (content provenance metadata) and return a per-image summary: whether a manifest is present, the claim generator (the tool that produced or edited the image), the title, and the signer name. Use this to find which images on a page carry provenance data. Note: provenance is decoded but NOT cryptographically verified.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "limit": {
        "type": "integer",
        "minimum": 1,
        "maximum": 100,
        "default": 25,
        "description": "Maximum number of images to fetch and scan (default 25, max 100)."
      }
    },
    "required": []
  },
  "annotations": {}
}
Showing scan_images_c2pa

Findings

WebMCP use

63 / 100 · weight 50
passTools registered
4 / 4
37 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 298.7000000476837ms of navigation.
toolget_support_ticket
passCanonical entry point
4 / 4
All 37 tools register on the canonical document.modelContext entry point.
passSchema validity
5 / 5
All 37 tools declare a structurally valid object input schema.
warningSchema quality
1.1 / 4
27 of 37 tool schemas are harder for an agent to use than they need to be: search-sarees 9 parameters have no description (query, fabric, region, technique).
toolsearch-sarees
search-sarees: 9 parameters have no description (query, fabric, region, technique); get-saree: 1 parameter has no description (id); compare-sarees: 1 parameter has no description (ids); open-saree: 1
fix
{
  name: "search-sarees",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}
passStub detection
5 / 5
All 37 tools declare an execute handler.
warningAnnotations present
0.6 / 4
31 of 37 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
toolscan_images_c2pa
scan_images_c2pa, inspect_image_c2pa, search_sarees, get_saree, list_artisans
fix
{
  name: "scan_images_c2pa",
  annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true }
}
passAnnotation mismatch
3 / 3
No tool claims to be read-only while its name says it writes (6 declared hints checked).
warningUntrusted content hint
0 / 2
5 of 5 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.
toolget_account
get_account: profile, customer; get_support_ticket: message, customer, ticket; create_support_ticket: customer, ticket; reply_support_ticket: reply, customer, ticket; close_support_ticket: customer, t
fix
{ name: "get_account", annotations: { untrustedContentHint: true } }
passRegistration errors
2 / 2
No tool registration threw during the capture.
warningToolchange coherence
1 / 2
37 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

90 / 100 · weight 30
warningNaming quality
1 / 2
Tool naming makes selection harder than it needs to be: names mix kebab and snake conventions; 8 names do not start with a verb (scan_images_c2pa).
toolscan_images_c2pa
fix
{ name: "scan_images_c2pa" /* 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
37 of 37 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.
toolscan_images_c2pa
scan_images_c2pa, inspect_image_c2pa, search-sarees, get-saree, compare-sarees
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="scan_images_c2pa" 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
37
run time
5s
finished
Aug 28, 2026