seminara.online WebMCP audit

Name: seminara.online WebMCP audit
Creator: ora

Rescan

audited Aug 28, 2026in 9s

66/ 100

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

WebMCP use66

Usefulness97

Human experience20

about:blank

No agent run recorded yet.

No steps recorded

Tools

create_session

Create a new Seminara AI-hosted presentation session. An autonomous AI host will present a slide deck and answer audience questions live.Takes an action on the site.

pagehttps://seminara.online/

implementation

viaimperative

entry pointprovideContext

registered after1324ms

executepresent

api surface

titleoptional

topicoptional

annotations

read onlynot declared

destructivenot declared

idempotentnot declared

open worldnot declared

untrusted contentnot declared

titlenot declared

3 findings

warningCanonical entry point

2 / 4

2 of 8 tools still register through the deprecated navigator.modelContext alias.

create_session, navigate_to

fix

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

failAnnotations present

0 / 4

8 of 8 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.

create_session, get_pricing, navigate_to, create_session, get_pricing

fix

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

warningHuman parity

1.6 / 8

8 of 10 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.

create_session, get_pricing, navigate_to, create_session, get_pricing

fix

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

tool json

{
  "name": "create_session",
  "description": "Create a new Seminara AI-hosted presentation session. An autonomous AI host will present a slide deck and answer audience questions live.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "title": {
        "type": "string",
        "description": "Title of the presentation session"
      },
      "topic": {
        "type": "string",
        "description": "Topic or subject of the presentation"
      }
    },
    "required": []
  },
  "annotations": {}
}

Findings

WebMCP use

66 / 100 · weight 50

passTools registered

4 / 4

8 imperative tools and 2 declarative forms 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.

warningRegistration timing

2 / 4

The slowest tool took 1603.9000000953674ms to register, past the 1000ms an agent reading the registry at first paint would wait for. 2 further tools carried no measurable registration time.

toolstart_presentation_preview

start_presentation_preview: registered at 1603.9000000953674ms

fix

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

warningCanonical entry point

2 / 4

2 of 8 tools still register through the deprecated navigator.modelContext alias.

toolcreate_session

create_session, navigate_to

fix

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

warningSchema validity

3.8 / 5

2 of 8 tools declare an input schema an agent cannot read: get_pricing declares no input schema.

toolget_pricing

get_pricing: declares no input schema; search_knowledge_base: declares no input schema

fix

{
  name: "get_pricing",
  inputSchema: { type: "object", properties: { /* ... */ }, required: [] }
}

passSchema quality

4 / 4

All 10 tool schemas describe their parameters and stay within Chrome's size guidance.

warningStub detection

3.1 / 5

3 of 8 tools declare no execute handler, so calling them does nothing.

toolget_pricing

get_pricing, search_knowledge_base, start_presentation_preview

fix

{
  name: "get_pricing",
  execute: async (args) => {
    // Perform the real action here - return live data, not a static placeholder.
    return result;
  }
}

failAnnotations present

0 / 4

8 of 8 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.

toolcreate_session

create_session, get_pricing, navigate_to, create_session, get_pricing

fix

{
  name: "create_session",
  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.

failRegistration errors

0 / 2

4 tool registrations threw during the capture, so the registry an agent reads is incomplete.

duplicate tool name registered: create_session

fix

try {
  document.modelContext.provideContext({ tools: [/* ... */] });
} catch (err) {
  console.error("WebMCP registration failed", err);
}

warningToolchange coherence

1 / 2

8 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

97 / 100 · weight 30

warningNaming quality

1.7 / 2

Tool naming makes selection harder than it needs to be: 3 names do not start with a verb (navigate_to).

toolnavigate_to

fix

{ name: "navigate_to" /* 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 docs flow: search or browse the catalog, read a page or article, navigate the documentation tree.

Human experience

20 / 100 · weight 20

warningHuman parity

1.6 / 8

toolcreate_session

create_session, get_pricing, navigate_to, create_session, get_pricing

fix

<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="create_session" 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: 10
run time: 9s
finished: Aug 28, 2026