northbridgelaw.org WebMCP audit

Name: northbridgelaw.org WebMCP audit
Creator: ora

Rescan

audited Nov 9, 2026in 12s

96/ 100100% of the applicable check weight evaluated

One tool registered. Strongest in shared experience, weakest in tool quality.

Shared experience100

Tool selection100

Tool quality84

Trust100

https://northbridgelaw.org

Tools

1 read, 0 write

Loading map

search_site

Search the pages and posts of this website by keyword. Returns up to `limit` matches, each with its title, URL and content type.Answers a question. Declared read only.

pagehttps://northbridgelaw.org/

implementation

viaimperative

entry pointdocument

registered after435ms

executepresent

api surface

queryrequired

limitoptional

annotations

read onlytrue

untrusted contentnot declared

titleSearch this site

2 findings

passRegistration timing

weight 1

Every measured tool registered within 435ms of navigation.

warningSchema quality

weight 4

1 of 1 tool schemas are harder for an agent to use than they need to be: search_site 2 parameters have no description (query, limit).

search_site: 2 parameters have no description (query, limit)

fix

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

tool json

{
  "name": "search_site",
  "description": "Search the pages and posts of this website by keyword. Returns up to `limit` matches, each with its title, URL and content type.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "query": {
        "type": "string"
      },
      "limit": {
        "type": "integer",
        "minimum": 1,
        "maximum": 10,
        "default": 5
      }
    },
    "required": [
      "query"
    ]
  },
  "annotations": {
    "readOnlyHint": true
  }
}

Findings

Shared experience

100 / 100 · weight 30

not applicableVisible effect

weight 6

Not invoked on this run: this audit did not call any tool. Scheduled re-audits only read the registry; a live audit from the report page calls the tools that declare readOnlyHint: true and not consequentialHint: true.

passPage experience

weight 16

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

passHuman parity

weight 8

The person co-browsing can see and use this page - the same page the agent's tools act on.

Tool selection

100 / 100 · weight 25

not applicableInvoke success rate

weight 6

passTool selection

weight 12

An agent chose an existing, callable tool and built a schema-valid call for all 1 canonical intents, each matching the kind of tool its intent needs. Nothing was executed, so this verifies selection, not outcomes.

not applicableCoverage vs. site type

weight 7

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.

Tool quality

84 / 100 · weight 25

passRegistration timing

weight 1

Every measured tool registered within 435ms of navigation.

toolsearch_site

passCanonical entry point

weight 3

The one registered tool registers on the canonical document.modelContext entry point.

passSchema validity

weight 4

All 1 declared input schema is a structurally valid object schema.

warningSchema quality

weight 4

1 of 1 tool schemas are harder for an agent to use than they need to be: search_site 2 parameters have no description (query, limit).

toolsearch_site

search_site: 2 parameters have no description (query, limit)

fix

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

passNaming quality

weight 2

All 1 tool name is consistent, verb-led, and within Chrome's size guidance.

passStub detection

weight 4

The one registered tool declares an execute handler.

passRegistration errors

weight 2

No tool registration threw during the capture.

passDescription quality

weight 5

All 1 rated tool descriptions say what the tool does, when to use it, and what it returns.

Trust

100 / 100 · weight 20

passAnnotations present

weight 4

All 1 read-shaped tool declares readOnlyHint: true - the one declared claim that lets an agent treat a call as safe to make without asking.

passAnnotation mismatch

weight 4

No tool claims to be read-only while its own name or description says it writes (1 declared hint checked).

not applicableUntrusted content hint

weight 3

No tool's contract suggests it returns text written by somebody other than the site, so there is nothing to flag as untrusted.

not applicableConsequential hint

weight 3

No tool name reads like a consequential action (a purchase, a booking, a payment, a transfer, a deletion), so there is no consequentialHint to expect.

not applicableHint vs. observed

weight 3

not applicableInjection surface

weight 3

No tool's metadata carries instruction-shaped text aimed at the agent reading it. This check only ever flags; it never credits a site.

Tool selection

100% across 1 intents

I want to search site on this site.ok

chosesearch_siteexpected search sitekind matched

arguments

{
  "query": "site"
}

model: gemini-2.5-flash

Add the tools this site is missing

Our scanner reads your website and suggests the right WebMCP tools for it.

The open source webmcp plugin teaches your coding agent to audit a site, implement tools on document.modelContext, and verify them in a real browser. npx @ora-ai/webmcp-verify runs the verification on its own. No signup, no hosted service.

how this was captured

observed via: capture shim (Chromium 151.0.7922.34)
chrome: 151.0.7922.34
capture shim: v3
spec snapshot: 2026-11-04
mode: fast
pages: 1 - entry page only
tools: 1
invoked: not invoked; a live audit calls them
run time: 12s
finished: Nov 9, 2026

Checked the way in-browser agents discover tools: the top-level document's modelContext registry, read after the page settles.