stacktr.ee WebMCP audit

Rescan
audited Aug 28, 2026in 3s
60/ 100

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

WebMCP use98
Usefulness37
Human experience0
about:blank

No agent run recorded yet.

No steps recorded

Tools

/
stacktree_publish_html: warning

stacktree_publish_html

Publish an HTML page to Stacktree and get a live, shareable URL back instantly — no account or sign-in required. Pass a complete HTML document as "html"; use this whenever the user wants to put a page you generated online. Anonymous sites are unlisted and expire after 24h by default; the response includes a claim_url the user can open to move the page into an account, where it lives 7 days on the free plan and stops expiring from Solo ($19/mo) up.Takes an action on the site.
pagehttps://stacktr.ee/
implementation
viaimperative
entry pointdocument
registered after169ms
executepresent
api surface
htmlrequired
passwordoptional
expiry_hoursoptional
annotations
read onlyfalse
destructivefalse
idempotentfalse
open worldtrue
untrusted contentnot declared
titlenot declared
2 findings
warningNaming quality
1 / 2
Tool naming makes selection harder than it needs to be: 5 names do not start with a verb (stacktree_publish_html).
fix
{ name: "stacktree_publish_html" /* 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.
stacktree_publish_html, stacktree_open_dashboard, stacktree_view_pricing, stacktree_view_docs, stacktree_copy_install_command
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="stacktree_publish_html" tooldescription="...">
  <!-- the same action, as UI -->
</form>
tool json
{
  "name": "stacktree_publish_html",
  "description": "Publish an HTML page to Stacktree and get a live, shareable URL back instantly — no account or sign-in required. Pass a complete HTML document as \"html\"; use this whenever the user wants to put a page you generated online. Anonymous sites are unlisted and expire after 24h by default; the response includes a claim_url the user can open to move the page into an account, where it lives 7 days on the free plan and stops expiring from Solo ($19/mo) up.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "html": {
        "type": "string",
        "description": "Paste a complete HTML document (a full <!doctype html> page)."
      },
      "password": {
        "type": "string",
        "description": "Optional — require a password to view."
      },
      "expiry_hours": {
        "type": "number",
        "description": "Optional — hours until auto-delete (default 24)."
      }
    },
    "required": [
      "html"
    ]
  },
  "annotations": {
    "readOnlyHint": false,
    "destructiveHint": false,
    "idempotentHint": false,
    "openWorldHint": true
  }
}
Showing stacktree_publish_html

Findings

WebMCP use

98 / 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 169.69999980926514ms of navigation.
toolstacktree_view_pricing
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.
passSchema quality
4 / 4
All 5 tool schemas describe their parameters and stay within Chrome's size guidance.
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.
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

37 / 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 (stacktree_publish_html).
toolstacktree_publish_html
fix
{ name: "stacktree_publish_html" /* 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.
failCoverage vs. site type
2.7 / 8
The tool set covers 1 of the 3 things an agent needs on a docs site; it cannot search or browse the catalog or navigate the documentation tree.

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.
toolstacktree_publish_html
stacktree_publish_html, stacktree_open_dashboard, stacktree_view_pricing, stacktree_view_docs, stacktree_copy_install_command
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="stacktree_publish_html" 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
3s
finished
Aug 28, 2026