marketintell.ai WebMCP audit

Name: marketintell.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 use90

Usefulness50

Human experience0

about:blank

No agent run recorded yet.

No steps recorded

Tools

alpha_signals

Latest published MarketIntell alpha signals across crypto + US equities. Each links to a public post-mortem with 24h + 7d outcomes.Answers a question. Declared read only.

pagehttps://marketintell.ai/

implementation

viaimperative

entry pointdocument

registered after93ms

executepresent

api surface

domainoptional

annotations

read onlytrue

destructivenot declared

idempotentnot declared

open worldnot declared

untrusted contentnot declared

titlenot declared

3 findings

warningSchema quality

2.4 / 4

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

alpha_signals: declares no required list, so an agent cannot tell which parameters are mandatory; screener: declares no required list, so an agent cannot tell which parameters are mandatory

fix

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

warningNaming quality

1 / 2

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

fix

{ name: "alpha_signals" /* 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.

alpha_signals, signal_performance, screener, health, open_signals_feed

fix

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

tool json

{
  "name": "alpha_signals",
  "description": "Latest published MarketIntell alpha signals across crypto + US equities. Each links to a public post-mortem with 24h + 7d outcomes.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "domain": {
        "type": "string",
        "enum": [
          "crypto",
          "us_equities",
          "india_stocks"
        ],
        "description": "Optional market filter."
      }
    }
  },
  "annotations": {
    "readOnlyHint": true
  }
}

Findings

WebMCP use

90 / 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 157.29999995231628ms of navigation.

toolopen_signals_feed

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: alpha_signals declares no required list, so an agent cannot tell which parameters are mandatory.

toolalpha_signals

alpha_signals: declares no required list, so an agent cannot tell which parameters are mandatory; screener: declares no required list, so an agent cannot tell which parameters are mandatory

fix

{
  name: "alpha_signals",
  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.

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).

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: alpha_signals

fix

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

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 (alpha_signals).

toolalpha_signals

fix

{ name: "alpha_signals" /* 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

toolalpha_signals

alpha_signals, signal_performance, screener, health, open_signals_feed

fix

<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="alpha_signals" 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