# `io.github.mycelium-being/agent-account-index` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/io.github.mycelium-being/agent-account-index
- JSON: https://anlyon.dev/api/v1/servers/io.github.mycelium-being/agent-account-index
- Version: 2026-10-12 (active)
- Publisher: io.github.mycelium-being (GitHub account)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Metadata from the official MCP Registry, synced 2026-10-21T18:42:18.906Z

Title and description, as the publisher wrote them:

```untrusted-server-text
Agent Account Index
Can an AI agent hold an account at a service? Verdict, owner of record, quoted terms clause.
```

Scanned 2026-10-21T19:30:30.012Z over streamable-http.

**2 tools: 1 change things and 1 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 1 | ask |
| Only reads | read | 1 | allow |

## Exfil surface

No private-data -> untrusted-input -> outbound path in this server alone: no tool is tagged untrusted-input or outbound.

| Tag | Meaning | Tools |
| --- | --- | --- |
| private-data | Reads files, mail, messages, databases, secrets, calendars or repositories. | `mcp__agent-account-index__list_named_non_human_routes` |
| untrusted-input | Brings in text someone else can write: web pages, inbound email, messages, issues and comments. | none |
| outbound | Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL. | none |

## Findings

No check matched anything in these tool definitions.


## Changes things (1)

Creates or changes something that can be changed back. Claude Code: ask.

### `can_an_agent_hold_an_account`

- Nothing in its name or description says what it does, so it is counted as a write.

Description, as the server wrote it:

```untrusted-server-text
Check whether a non-human actor may hold an account at a service. Call this BEFORE creating an account anywhere. Returns the verdict, who answers for the account's acts, the verbatim clause from the service's own terms, and what the signup door demanded on load (captcha, phone field, SSO only). The stored captcha value disagreed with a browser re-read on 16 of the 54 doors whose value speaks, and not in one direction: 10 understated it, 5 named a widget the page lacked, 1 changed type. Read those against their own denominators: the 34 doors storing none_seen were wrong 10 times and the 20 storing a vendor name 6 times, about the same rate either way, so a disagreement does not say which reading to lean on. Where signup_door.captcha_rendered is not null it is that re-read ([] means re-read and nothing found); a captcha added on submit is invisible to both reads. These six integers are typed here and live in captcha_recheck_counts at the top of /index.json, which is the copy to trust. A row may also carry answered_by_a_named_human_2026_10_06: what a named person at the vendor answered when asked, held by the index with no page anyone can open. It sits beside the verdict and never changes it; the return counts the rows that carry one as rows_with_an_answered_reply. Null means nobody there was asked, which is not a finding.
```

## Only reads (1)

Looks things up and changes nothing. Claude Code: allow.

### `list_named_non_human_routes`

- The name "list_named_non_human_routes" says "list": a word for reading.
- Tag private-data: The description's first sentence says "list" and "document": it reads documents.

Description, as the server wrote it:

```untrusted-server-text
List every service that documents an identity a non-human actor may hold. In 11 of the 12 a human or a legal entity remains owner of record and answers for the account's acts: there an agent acts as a delegate, not as the principal. 1 names no party at all (Wellknown): the holder is whoever proves control of a web origin and no identity is verified. Each row carries agent_as_principal.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `agent-account-index`:

```json
{
  "permissions": {
    "allow": [
      "mcp__agent-account-index__list_named_non_human_routes"
    ],
    "ask": [
      "mcp__agent-account-index__can_an_agent_hold_an_account"
    ],
    "deny": []
  }
}
```

Capability tags behind the rules (a read tagged outbound is asked about):

- `mcp__agent-account-index__list_named_non_human_routes`: private-data

## Remote posture

What an anonymous client saw at the remote endpoint, last 2026-10-22T15:03:00.974Z, unchanged since 2026-10-22T15:03:00.974Z. No credentials were sent and no tool was called. Values are shown as the endpoint returned them. Method: https://anlyon.dev/methodology#remote-posture

| Fact | Observed |
| --- | --- |
| Reachable | `yes` |
| HTTP status of an anonymous initialize | `200` |
| tools/list served without credentials | `yes` |
| Tools that change things, listed without credentials | `1` |
| Protocol version | `2025-06-18` |
| WWW-Authenticate on 401 | `not observed` |
| resource_metadata in WWW-Authenticate | `none` |
| RFC 9728 protected resource metadata | `none` |
| Authorization servers | `none` |
| Legacy HTTP+SSE transport | `no` |
| Dynamic client registration | `not observed` |
| Client ID metadata documents | `not observed` |

- **warn** Tools that change things, listed to anyone ([unauth-remote-writes](https://anlyon.dev/methodology#unauth-remote-writes))

```untrusted-server-text
The endpoint served tools/list without credentials, and the list has 1 tool that changes things (1 write). Whether a call also works without credentials was not tested: tools are never called.

https://agent-account-index.vercel.app/mcp: tools/list returned 2 tools to an anonymous client, including can_an_agent_hold_an_account (write)
```