altss.com WebMCP audit

Name: altss.com WebMCP audit
Creator: ora

Rescan

audited Nov 11, 2026in 9s

94/ 100100% of the applicable check weight evaluated

6 tools registered. Strongest in shared experience, weakest in trust.

Shared experience100

Tool selection100

Tool quality98

Trust72

https://altss.com

Tools

5 read, 1 write

Loading map

get_altss_public_guide

Return a published Altss summary and canonical public links for one topic. No private records, browsing, form access, authentication or transactions.Answers a question. Declared read only.

pagehttps://altss.com/

implementation

viaimperative

entry pointdocument

registered after585ms

executepresent

api surface

topicrequired

annotations

read onlytrue

untrusted contentnot declared

titleRead Altss public guidance

consequentialfalse

0 findingsNo check named this tool.

tool json

{
  "name": "get_altss_public_guide",
  "description": "Return a published Altss summary and canonical public links for one topic. No private records, browsing, form access, authentication or transactions.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "topic": {
        "type": "string",
        "description": "Published topic to read: public profiles, product, pricing, coverage, methodology, access, or developer resources.",
        "enum": [
          "public-profiles",
          "product",
          "pricing",
          "coverage",
          "methodology",
          "access",
          "resources"
        ]
      }
    },
    "required": [
      "topic"
    ],
    "additionalProperties": false
  },
  "annotations": {
    "readOnlyHint": true,
    "consequentialHint": false
  }
}

Findings

Shared experience

100 / 100 · weight 30

not applicableVisible effect

weight 6

Not invoked on this run: this audit did not call any tool. Scheduled re-audits only read the registry; a live audit from the report page calls the tools that declare readOnlyHint: true and not consequentialHint: true.

passPage experience

weight 16

The page a person sees holds up next to the agent surface: a working interface, visible actions, readable content, nothing in the way.

passHuman parity

weight 8

The person co-browsing can see and use this page - the same page the agent's tools act on.

Tool selection

100 / 100 · weight 25

not applicableInvoke success rate

weight 6

passTool selection

weight 12

An agent chose an existing, callable tool and built a schema-valid call for all 3 canonical intents, each matching the kind of tool its intent needs. Nothing was executed, so this verifies selection, not outcomes.

not applicableCoverage vs. site type

weight 7

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.

Tool quality

98 / 100 · weight 25

passRegistration timing

weight 1

Every measured tool registered within 585ms of navigation.

toolget_altss_public_interface_check

passCanonical entry point

weight 3

All 6 tools register on the canonical document.modelContext entry point.

passSchema validity

weight 4

All 6 declared input schemas are structurally valid object schemas.

passSchema quality

weight 4

All 6 tool schemas describe their parameters, and every description stays within Chrome's size guidance.

warningNaming quality

weight 2

Tool naming makes selection harder than it needs to be: 3 names are over Chrome's 30-character guidance.

toolread_altss_public_profiles_batch

fix

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

passStub detection

weight 4

All 6 tools declare an execute handler.

passRegistration errors

weight 2

No tool registration threw during the capture.

passDescription quality

weight 5

All 6 rated tool descriptions say what the tool does, when to use it, and what it returns.

Trust

72 / 100 · weight 20

passAnnotations present

weight 4

All 5 read-shaped tools declare readOnlyHint: true - the one declared claim that lets an agent treat a call as safe to make without asking.

passAnnotation mismatch

weight 4

No tool claims to be read-only while its own name or description says it writes (6 declared hints checked).

not applicableUntrusted content hint

weight 3

No tool's contract suggests it returns text written by somebody other than the site, so there is nothing to flag as untrusted.

not applicableConsequential hint

weight 3

No tool name reads like a consequential action (a purchase, a booking, a payment, a transfer, a deletion), so there is no consequentialHint to expect.

not applicableHint vs. observed

weight 3

warningInjection surface

weight 3

1 of 6 tools carry instruction-shaped text in their own metadata: read_altss_public_profile description instructs agent how to treat data.

toolread_altss_public_profile

read_altss_public_profile: description instructs agent how to treat data

fix

{
  name: "read_altss_public_profile",
  // Metadata DESCRIBES the tool - it never addresses the agent reading it.
  // Rewrite any name, description, title, or schema field description that
  // instructs the agent (which tool to prefer, what to output, rules to
  // ignore) so it states what the tool does and what it returns instead.
  description: "Searches the catalog and returns matching items with prices."
}

Tool selection

100% across 3 intents

I want to get altss public guide on this site.ok

choseget_altss_public_guideexpected get altss public guidekind matched

arguments

{
  "topic": "product"
}

I want to search altss public profiles on this site.ok

chosesearch_altss_public_profilesexpected search altss public profileskind matched

arguments

{
  "query": "example"
}

I want to read altss public profile on this site.ok

choseread_altss_public_profileexpected read altss public profilekind matched

arguments

{
  "slug": "example-slug"
}

model: gemini-2.5-flash

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how this was captured

observed via: capture shim (Chromium 151.0.7922.34)
chrome: 151.0.7922.34
capture shim: v3
spec snapshot: 2026-11-10
mode: fast
pages: 1 - entry page only
tools: 6
invoked: not invoked; a live audit calls them
run time: 9s
finished: Nov 11, 2026

Checked the way in-browser agents discover tools: the top-level document's modelContext registry, read after the page settles.