karoleloi.com WebMCP audit

Rescan
audited Aug 28, 2026in 5s
69/ 100

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

WebMCP use83
Usefulness92
Human experience0
about:blank

No agent run recorded yet.

No steps recorded

Tools

/
get_program_info: fail

get_program_info

Informações da Karol Elói Language Learning: método, diferenciais, fundadora e como funciona a conversa de nivelamento.Takes an action on the site.
pagehttps://karoleloi.com/
implementation
viaimperative
entry pointdocument
registered after201ms
executepresent
api surfaceTakes no parameters.
annotations
read onlynot declared
destructivenot declared
idempotentnot declared
open worldnot declared
untrusted contentnot declared
titlenot declared
2 findings
failAnnotations present
0 / 4
6 of 6 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
get_program_info, fill_nivelamento_answer, submit_nivelamento, get_available_slots, book_meeting
fix
{
  name: "get_program_info",
  annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true }
}
warningHuman parity
0 / 8
6 of 6 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_program_info, fill_nivelamento_answer, submit_nivelamento, get_available_slots, book_meeting
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="get_program_info" tooldescription="...">
  <!-- the same action, as UI -->
</form>
tool json
{
  "name": "get_program_info",
  "description": "Informações da Karol Elói Language Learning: método, diferenciais, fundadora e como funciona a conversa de nivelamento.",
  "inputSchema": {
    "type": "object",
    "properties": {}
  },
  "annotations": {}
}
Showing get_program_info

Findings

WebMCP use

83 / 100 · weight 50
passTools registered
4 / 4
6 tools registered across 1 page.
passReal-browser eligible
8 / 8
A real browser exposes modelContext natively on this page, so the tools registered here are visible to an agent today.
passRegistration timing
4 / 4
Every measured tool registered within 201.30000019073486ms of navigation.
toolfill_nivelamento_answer
passCanonical entry point
4 / 4
All 6 tools register on the canonical document.modelContext entry point.
passSchema validity
5 / 5
All 6 tools declare a structurally valid object input schema.
warningSchema quality
2 / 4
3 of 6 tool schemas are harder for an agent to use than they need to be: fill_nivelamento_answer description is 663 characters, over Chrome's 500-character guidance.
toolfill_nivelamento_answer
fill_nivelamento_answer: description is 663 characters, over Chrome's 500-character guidance; submit_nivelamento: 1 parameter description is over Chrome's 150-character guidance; get_available_slots:
fix
{
  name: "fill_nivelamento_answer",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}
passStub detection
5 / 5
All 6 tools declare an execute handler.
failAnnotations present
0 / 4
6 of 6 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
toolget_program_info
get_program_info, fill_nivelamento_answer, submit_nivelamento, get_available_slots, book_meeting
fix
{
  name: "get_program_info",
  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
6 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

92 / 100 · weight 30
warningNaming quality
1.8 / 2
Tool naming makes selection harder than it needs to be: 1 name does not start with a verb (fill_nivelamento_answer).
toolfill_nivelamento_answer
fix
{ name: "fill_nivelamento_answer" /* 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.
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
6 of 6 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_program_info
get_program_info, fill_nivelamento_answer, submit_nivelamento, get_available_slots, book_meeting
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="get_program_info" 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
6
run time
5s
finished
Aug 28, 2026