kulikowski.me WebMCP audit

Rescan
audited Aug 28, 2026in 5s
77/ 100

3 tools registered. Strongest in usefulness, weakest in human experience.

WebMCP use95
Usefulness100
Human experience0
about:blank

No agent run recorded yet.

No steps recorded

Tools

/
list_posts: warning

list_posts

Lists every blog post on this site, newest first, with title, summary, publication date, tags, slug, and URLs for both the HTML page and the raw markdown.Answers a question. Declared read only.
pagehttps://www.kulikowski.me/
implementation
viaimperative
entry pointdocument
registered after646ms
executepresent
api surfaceTakes no parameters.
annotations
read onlytrue
destructivenot declared
idempotentnot declared
open worldnot declared
untrusted contentnot declared
titlenot declared
2 findings
passRegistration timing
4 / 4
Every measured tool registered within 645.6000001430511ms of navigation.
warningHuman parity
0 / 8
3 of 3 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.
list_posts, get_post_content, set_theme
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="list_posts" tooldescription="...">
  <!-- the same action, as UI -->
</form>
tool json
{
  "name": "list_posts",
  "description": "Lists every blog post on this site, newest first, with title, summary, publication date, tags, slug, and URLs for both the HTML page and the raw markdown.",
  "inputSchema": {
    "type": "object",
    "properties": {}
  },
  "annotations": {
    "readOnlyHint": true
  }
}
Showing list_posts

Findings

WebMCP use

95 / 100 · weight 50
passTools registered
4 / 4
3 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 645.6000001430511ms of navigation.
toollist_posts
passCanonical entry point
4 / 4
All 3 tools register on the canonical document.modelContext entry point.
passSchema validity
5 / 5
All 3 tools declare a structurally valid object input schema.
passSchema quality
4 / 4
All 3 tool schemas describe their parameters and stay within Chrome's size guidance.
passStub detection
5 / 5
All 3 tools declare an execute handler.
warningAnnotations present
2.7 / 4
1 of 3 tools declare no readOnlyHint, so an agent cannot tell a read from a write without guessing from the name.
toolset_theme
set_theme
fix
{
  name: "set_theme",
  annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true }
}
passAnnotation mismatch
3 / 3
No tool claims to be read-only while its name says it writes (2 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
3 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

100 / 100 · weight 30
passNaming quality
2 / 2
All 3 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.
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
3 of 3 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.
toollist_posts
list_posts, get_post_content, set_theme
fix
<!-- Give the tool a visible counterpart: a declarative form is one the person can see and use too. -->
<form toolname="list_posts" 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
3
run time
5s
finished
Aug 28, 2026