humanforai.dev WebMCP audit

Name: humanforai.dev WebMCP audit
Creator: ora

Rescan Claim

audited Aug 29, 2026in 12s

62/ 100

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

WebMCP use72

Usefulness33

Human experience80

https://humanforai.dev

Tools

Loading map

get_human_services

Fetch the Human For AI manifest: available human services, operator profile, response times, accepted and rejected task types, and trust & safety policy. Call this first.Answers a question. Declared read only.

pagehttps://humanforai.dev/

implementation

viaimperative

entry pointdocument

registered after65ms

executepresent

api surfaceTakes no parameters.

annotations

read onlytrue

destructivefalse

idempotenttrue

open worldfalse

untrusted contentnot declared

titleList human services

1 finding

warningHuman parity

4 / 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.

get_human_services, get_service_details, submit_human_task, check_task_status, message_human_operator

fix

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

tool json

{
  "name": "get_human_services",
  "description": "Fetch the Human For AI manifest: available human services, operator profile, response times, accepted and rejected task types, and trust & safety policy. Call this first.",
  "inputSchema": {
    "type": "object",
    "properties": {}
  },
  "annotations": {
    "readOnlyHint": true,
    "destructiveHint": false,
    "idempotentHint": true,
    "openWorldHint": false,
    "title": "List human services"
  }
}

Findings

WebMCP use

72 / 100 · weight 50

passTools registered

4 / 4

5 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 65.70000000111759ms of navigation.

toolcheck_task_status

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.

passSchema quality

4 / 4

All 5 tool schemas describe their parameters and stay within Chrome's size guidance.

passStub detection

5 / 5

All 5 tools declare an execute handler.

passAnnotations present

4 / 4

All 5 tools declare a readOnlyHint, so an agent knows which calls change state.

passAnnotation mismatch

3 / 3

No tool claims to be read-only while its name says it writes (5 declared hints checked).

warningUntrusted content hint

0 / 2

2 of 2 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.

toolcheck_task_status

check_task_status: note, submitted; message_human_operator: message, reply, replie

fix

{ name: "check_task_status", annotations: { untrustedContentHint: true } }

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"));

warningInjection surface

0 / 3

2 of 5 tool contracts expose an injection or unsafe-argument surface: submit_human_task free-text parameter 'description' is forwarded to a human.

toolsubmit_human_task

submit_human_task: free-text parameter 'description' is forwarded to a human; message_human_operator: free-text parameter 'message' is forwarded to a human

fix

{
  name: "submit_human_task",
  execute: async (args) => {
    // Validate/sanitize args before acting on them.
    if (!isValid(args)) throw new Error("invalid arguments");
    /* ... */
  }
}

Usefulness

33 / 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 (message_human_operator).

toolmessage_human_operator

fix

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

passDescription quality

6 / 6

All 5 rated tool descriptions say what the tool does, when to use it, and what it returns.

failTool selection

0 / 14

An agent completed 0 of 3 canonical intents against this tool set; on "Find the record for a company called Northwind." no tool on the page served it.

failCoverage vs. site type

2 / 8

The tool set covers 1 of the 4 things an agent needs on a saas site; it cannot search or browse the catalog or create a record or start a job or update or move an existing record.

Human experience

80 / 100 · weight 20

warningHuman parity

4 / 8

toolget_human_services

get_human_services, get_service_details, submit_human_task, check_task_status, message_human_operator

fix

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

passPage experience

12 / 12

The page a person sees holds up next to the agent surface: a working interface, visible actions, readable content, nothing in the way.

Tool selection

0% across 3 intents

Find the record for a company called Northwind.missed

choseno toolexpected record search

No tool was picked for this intent.

arguments

{}

Show me everything on that record.missed

choseno toolexpected record detail

No tool was picked for this intent.

arguments

{}

Create a new contact called Dana Reeve.missed

choseno toolexpected record create

No tool was picked for this intent.

arguments

{}

model: gemini-2.5-flash

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how this was captured

chrome: 148.0.7778.96
capture shim: v1
spec snapshot: 2026-08
mode: fast
pages: 1
tools: 5
run time: 12s
finished: Aug 29, 2026