gexlog.com WebMCP audit

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audited Aug 28, 2026in 5s
62/ 100

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

WebMCP use80
Usefulness73
Human experience0
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Tools

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get_current_briefing: fail

get_current_briefing

Get today's GEXLOG market briefing for SPX/SPXW options. Returns the current gamma regime classification (POSITIVE/NEGATIVE/NEUTRAL/TRANSITIONAL), key price levels (put wall, call wall, GEX flip, expected move, pivot levels R1/R2/S1/S2), trade signal (GO/CAUTION/WAIT), day type forecast (RANGE BOUND/TREND UP/TREND DOWN/HIGH VOLATILITY), AI-generated market narrative, and structured trade playbook with primary, alternative, and neutral strategies. Data is generated pre-market (~6:50 AM ET weekdays) and refreshed after close (~7:40 PM ET). Use this to understand today's SPX options market positioning and trade guidance.Takes an action on the site.
pagehttps://gexlog.com/
implementation
viaimperative
entry pointdocument
registered after522ms
executepresent
api surface
reportoptional
annotations
read onlynot declared
destructivenot declared
idempotentnot declared
open worldnot declared
untrusted contentnot declared
titlenot declared
3 findings
warningSchema quality
0.8 / 4
4 of 5 tool schemas are harder for an agent to use than they need to be: get_current_briefing description is 625 characters, over Chrome's 500-character guidance.
get_current_briefing: description is 625 characters, over Chrome's 500-character guidance; get_current_briefing: 1 parameter description is over Chrome's 150-character guidance; get_historical_briefin
fix
{
  name: "get_current_briefing",
  inputSchema: {
    type: "object",
    properties: {
      query: { type: "string", description: "What to search for" }
    },
    required: ["query"]
  }
}
failAnnotations present
0 / 4
5 of 5 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
get_current_briefing, get_historical_briefing, get_date_range, get_available_dates, get_regime_history
fix
{
  name: "get_current_briefing",
  annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true }
}
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.
get_current_briefing, get_historical_briefing, get_date_range, get_available_dates, get_regime_history
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="get_current_briefing" tooldescription="...">
  <!-- the same action, as UI -->
</form>
tool json
{
  "name": "get_current_briefing",
  "description": "Get today's GEXLOG market briefing for SPX/SPXW options. Returns the current gamma regime classification (POSITIVE/NEGATIVE/NEUTRAL/TRANSITIONAL), key price levels (put wall, call wall, GEX flip, expected move, pivot levels R1/R2/S1/S2), trade signal (GO/CAUTION/WAIT), day type forecast (RANGE BOUND/TREND UP/TREND DOWN/HIGH VOLATILITY), AI-generated market narrative, and structured trade playbook with primary, alternative, and neutral strategies. Data is generated pre-market (~6:50 AM ET weekdays) and refreshed after close (~7:40 PM ET). Use this to understand today's SPX options market positioning and trade guidance.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "report": {
        "type": "string",
        "anyOf": [
          {
            "const": "morning",
            "title": "Morning briefing (pre-market, generated ~6:50 AM ET)"
          },
          {
            "const": "evening",
            "title": "Evening briefing (post-close refresh with updated levels and scorecard)"
          },
          {
            "const": "weekend",
            "title": "Weekend preview (generated Saturday ~8:30 AM ET, covers coming week)"
          }
        ],
        "enum": [
          "morning",
          "evening",
          "weekend"
        ],
        "description": "Which report to retrieve. 'morning' is the primary daily briefing. 'evening' is the post-close refresh with updated levels and scorecard. 'weekend' is the Saturday preview for the coming week including week-ahead calendar and risk score."
      }
    }
  },
  "annotations": {}
}
Showing get_current_briefing

Findings

WebMCP use

80 / 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 522.9000000953674ms of navigation.
toolget_date_range
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
0.8 / 4
4 of 5 tool schemas are harder for an agent to use than they need to be: get_current_briefing description is 625 characters, over Chrome's 500-character guidance.
toolget_current_briefing
get_current_briefing: description is 625 characters, over Chrome's 500-character guidance; get_current_briefing: 1 parameter description is over Chrome's 150-character guidance; get_historical_briefin
fix
{
  name: "get_current_briefing",
  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.
failAnnotations present
0 / 4
5 of 5 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
toolget_current_briefing
get_current_briefing, get_historical_briefing, get_date_range, get_available_dates, get_regime_history
fix
{
  name: "get_current_briefing",
  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.
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

73 / 100 · weight 30
passNaming quality
2 / 2
All 5 tool names are consistent, verb-led, and within Chrome's size guidance.
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.
warningCoverage vs. site type
5.3 / 8
The tool set covers 2 of the 3 things an agent needs on a finance site; it cannot read a balance or position.

Human experience

0 / 100 · weight 20
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.
toolget_current_briefing
get_current_briefing, get_historical_briefing, get_date_range, get_available_dates, get_regime_history
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="get_current_briefing" 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
5s
finished
Aug 28, 2026