a2a.global WebMCP audit

Rescan
audited Aug 28, 2026in 6s
55/ 100

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

WebMCP use80
Usefulness50
Human experience0
about:blank

No agent run recorded yet.

No steps recorded

Tools

/
become_an_expert: fail

become_an_expert

Directs the user to the A2A Global expert registration flow, where qualified professionals can apply to join the platform and provide second opinions on AI-generated content. Use this when a user wants to offer their expertise, apply as a reviewer, or learn how to become an A2A expert. Appropriate for requests like 'I want to become an expert' or 'How do I join as a reviewer?'Takes an action on the site.
pagehttps://a2a.global/
implementation
viaimperative
entry pointdocument
registered after1539ms
executepresent
api surfaceTakes no parameters.
annotations
read onlynot declared
destructivenot declared
idempotentnot declared
open worldnot declared
untrusted contentnot declared
titlenot declared
3 findings
warningNaming quality
1 / 2
Tool naming makes selection harder than it needs to be: 6 names do not start with a verb (become_an_expert).
fix
{ name: "become_an_expert" /* short, unique, verb-based */ }
failAnnotations present
0 / 4
6 of 6 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
become_an_expert, go_to_for_ai_agents, go_to_for_llms, go_to_login, go_to_news
fix
{
  name: "become_an_expert",
  annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true }
}
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.
become_an_expert, go_to_for_ai_agents, go_to_for_llms, go_to_login, go_to_news
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="become_an_expert" tooldescription="...">
  <!-- the same action, as UI -->
</form>
tool json
{
  "name": "become_an_expert",
  "description": "Directs the user to the A2A Global expert registration flow, where qualified professionals can apply to join the platform and provide second opinions on AI-generated content. Use this when a user wants to offer their expertise, apply as a reviewer, or learn how to become an A2A expert. Appropriate for requests like 'I want to become an expert' or 'How do I join as a reviewer?'",
  "inputSchema": {
    "type": "object",
    "properties": {}
  },
  "annotations": {}
}
Showing become_an_expert

Findings

WebMCP use

80 / 100 · weight 50
passTools registered
4 / 4
6 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.
warningRegistration timing
2 / 4
The slowest tool took 1539.5999999046326ms to register, past the 1000ms an agent reading the registry at first paint would wait for.
toolgo_to_for_ai_agents
go_to_for_ai_agents: registered at 1539.5999999046326ms
fix
// Register tools as soon as they're ready, not behind a deferred/async chunk.
document.modelContext.provideContext({ tools: [/* ... */] });
passCanonical entry point
4 / 4
All 6 tools register on the canonical document.modelContext entry point.
passSchema validity
5 / 5
All 6 tools declare a structurally valid object input schema.
passSchema quality
4 / 4
All 6 tool schemas describe their parameters and stay within Chrome's size guidance.
passStub detection
5 / 5
All 6 tools declare an execute handler.
failAnnotations present
0 / 4
6 of 6 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
toolbecome_an_expert
become_an_expert, go_to_for_ai_agents, go_to_for_llms, go_to_login, go_to_news
fix
{
  name: "become_an_expert",
  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.
warningUntrusted content hint
0 / 2
1 of 1 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.
toolgo_to_news
go_to_news: review, post, user
fix
{ name: "go_to_news", annotations: { untrustedContentHint: true } }
passRegistration errors
2 / 2
No tool registration threw during the capture.
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 (become_an_expert).
toolbecome_an_expert
fix
{ name: "become_an_expert" /* 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
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.
toolbecome_an_expert
become_an_expert, go_to_for_ai_agents, go_to_for_llms, go_to_login, go_to_news
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="become_an_expert" 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
6s
finished
Aug 28, 2026