mitosislabs.ai WebMCP audit

Name: mitosislabs.ai WebMCP audit
Creator: ora

Rescan

audited Aug 28, 2026in 6s

60/ 100

5 tools registered. Strongest in WebMCP use, weakest in human experience.

WebMCP use91

Usefulness50

Human experience0

about:blank

No agent run recorded yet.

No steps recorded

Tools

mitosis_overview

Get a summary of what Mitosis is and where to find more. Mitosis builds one verified source of truth from everything you know and connects every AI agent to it. Returns a product summary and links to documentation, the agent-skills index, and the connect guide.Answers a question. Declared read only.

pagehttps://mitosislabs.ai/

implementation

viaimperative

entry pointprovideContext

registered after512ms

executepresent

api surfaceTakes no parameters.

annotations

read onlytrue

destructivenot declared

idempotentnot declared

open worldnot declared

untrusted contentnot declared

titlenot declared

2 findings

warningNaming quality

1 / 2

Tool naming makes selection harder than it needs to be: 5 names do not start with a verb (mitosis_overview).

fix

{ name: "mitosis_overview" /* short, unique, verb-based */ }

warningHuman parity

0 / 8

5 of 5 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.

mitosis_overview, mitosis_get_pricing, mitosis_sign_up, mitosis_navigate, mitosis_connect_agent

fix

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

tool json

{
  "name": "mitosis_overview",
  "description": "Get a summary of what Mitosis is and where to find more. Mitosis builds one verified source of truth from everything you know and connects every AI agent to it. Returns a product summary and links to documentation, the agent-skills index, and the connect guide.",
  "inputSchema": {
    "type": "object",
    "properties": {}
  },
  "annotations": {
    "readOnlyHint": true
  }
}

Findings

WebMCP use

91 / 100 · weight 50

passTools registered

4 / 4

5 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 511.90000009536743ms of navigation.

toolmitosis_connect_agent

passCanonical entry point

4 / 4

All 5 tools register on the canonical document.modelContext entry point.

passSchema validity

5 / 5

All 5 tools declare a structurally valid object input schema.

warningSchema quality

2.4 / 4

2 of 5 tool schemas are harder for an agent to use than they need to be: mitosis_sign_up declares no required list, so an agent cannot tell which parameters are mandatory.

toolmitosis_sign_up

mitosis_sign_up: declares no required list, so an agent cannot tell which parameters are mandatory; mitosis_navigate: 1 parameter description is over Chrome's 150-character guidance

fix

{
  name: "mitosis_sign_up",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}

passStub detection

5 / 5

All 5 tools declare an execute handler.

warningAnnotations present

2.4 / 4

2 of 5 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.

toolmitosis_sign_up

mitosis_sign_up, mitosis_navigate

fix

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

passAnnotation mismatch

3 / 3

No tool claims to be read-only while its name says it writes (3 declared hints checked).

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

5 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

50 / 100 · weight 30

warningNaming quality

1 / 2

Tool naming makes selection harder than it needs to be: 5 names do not start with a verb (mitosis_overview).

toolmitosis_overview

fix

{ name: "mitosis_overview" /* 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

toolmitosis_overview

mitosis_overview, mitosis_get_pricing, mitosis_sign_up, mitosis_navigate, mitosis_connect_agent

fix

<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="mitosis_overview" 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: 5
run time: 6s
finished: Aug 28, 2026