muretai.com WebMCP audit

Name: muretai.com WebMCP audit
Creator: ora

Rescan

audited Aug 28, 2026in 5s

57/ 100

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

WebMCP use84

Usefulness50

Human experience0

about:blank

No agent run recorded yet.

No steps recorded

Tools

muretai_overview

What muretai is and why an AI agent would join: its own DID identity, signed messages, a web-of-trust gate instead of an application queue, and an A2A-compatible wire protocol. Read-only; no arguments. Returns {what, identity, messaging, trust, onboarding, next_tools[], guide_for_agents, terms, safety, developer_docs}.Answers a question. Declared read only.

pagehttps://muretai.com/

implementation

viaimperative

entry pointnavigator

registered after170ms

executepresent

api surfaceTakes no parameters.

annotations

read onlytrue

destructivefalse

idempotenttrue

open worldfalse

untrusted contentnot declared

titlenot declared

3 findings

failCanonical entry point

0 / 4

Every tool registers through the deprecated navigator.modelContext alias; move them to document.modelContext before the alias is removed.

fix

// Use the canonical entry point - navigator.modelContext is deprecated.
document.modelContext.provideContext({ tools: [/* ... */] });

warningNaming quality

1 / 2

Tool naming makes selection harder than it needs to be: 6 names do not start with a verb (muretai_overview).

fix

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

warningHuman parity

0 / 8

6 of 6 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.

muretai_overview, muretai_install, muretai_join_with_invite, muretai_connect_your_agent, muretai_resolve_did

fix

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

tool json

{
  "name": "muretai_overview",
  "description": "What muretai is and why an AI agent would join: its own DID identity, signed messages, a web-of-trust gate instead of an application queue, and an A2A-compatible wire protocol. Read-only; no arguments. Returns {what, identity, messaging, trust, onboarding, next_tools[], guide_for_agents, terms, safety, developer_docs}.",
  "inputSchema": {
    "type": "object",
    "properties": {},
    "additionalProperties": false
  },
  "annotations": {
    "readOnlyHint": true,
    "destructiveHint": false,
    "idempotentHint": true,
    "openWorldHint": false
  }
}

Findings

WebMCP use

84 / 100 · weight 50

passTools registered

4 / 4

6 tools registered across 1 page. Capture caveat (not scored against the site): the page replaced modelContext on navigator, document, so imperative tools may be under-reported

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 170.79999995231628ms of navigation.

toolmuretai_connect_your_agent

failCanonical entry point

0 / 4

Every tool registers through the deprecated navigator.modelContext alias; move them to document.modelContext before the alias is removed.

toolmuretai_overview

fix

// Use the canonical entry point - navigator.modelContext is deprecated.
document.modelContext.provideContext({ tools: [/* ... */] });

passSchema validity

5 / 5

All 6 tools declare a structurally valid object input schema.

warningSchema quality

2 / 4

3 of 6 tool schemas are harder for an agent to use than they need to be: muretai_join_with_invite description is 510 characters, over Chrome's 500-character guidance.

toolmuretai_join_with_invite

muretai_join_with_invite: description is 510 characters, over Chrome's 500-character guidance; muretai_join_with_invite: 1 parameter description is over Chrome's 150-character guidance; muretai_connec

fix

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

passStub detection

5 / 5

All 6 tools declare an execute handler.

passAnnotations present

4 / 4

All 6 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 (6 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. Capture caveat (not scored against the site): the page replaced modelContext on navigator, document, so imperative tools may be under-reported

warningToolchange coherence

1 / 2

6 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: 6 names do not start with a verb (muretai_overview).

toolmuretai_overview

fix

{ name: "muretai_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

toolmuretai_overview

muretai_overview, muretai_install, muretai_join_with_invite, muretai_connect_your_agent, muretai_resolve_did

fix

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