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list_circle_members

Read-only

List a Circle's members. Each member carries channel-presence booleans (has_telegram / has_whatsapp) and the masked phone they enrolled from (enrolled_phone_hint, e.g. +9••••••4171) — a full identifier is NEVER returned (SEC-PM-006).

ACCESS: needs a Proof account. Authenticate this client (Claude Code: /mcp → Authenticate), then call this tool again. start_login does NOT open this tool.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "id": "<id>"
    },
    "name": "list_circle_members"
  }
}

Input Schema

NameRequiredDescriptionDefault
idYesCircle ID

Output Schema

NameRequiredDescriptionDefault
membersNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "additionalProperties": {},
+  "properties": {
+    "members": {}
+  },
+  "type": "object"
+}
  2. Changed1 schema field changed
    • removedInput schema / additionalProperties
      Removed value: -false
  3. First observed

TDQS

A3.8/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations only declare readOnlyHint, which is a low bar; the description adds real behavioral context: which fields each member carries (has_telegram/has_whatsapp), a hard privacy guarantee that full identifiers are never returned, and an auth-flow caveat. It stops short of covering pagination, ordering, or result-size limits.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two tight paragraphs: purpose and return shape first, then access. The example masked phone is illustrative rather than redundant, and no sentence is filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With an output schema present, the return values need no repetition, and the annotations carry the read-only safety profile. The description covers the one non-obvious risk (authentication) plus the privacy constraint; only edge-case behavior (empty circles, paging) is left unstated.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the single `id` parameter is documented as "Circle ID" with a 24-hex pattern. The description adds nothing about the identifier beyond that, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

Opens with a specific verb+resource ("List a Circle's members") and immediately characterizes the returned records. It does not explicitly distinguish itself from near-siblings like get_circle or list_circle_member_channels, but the purpose is unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The ACCESS block gives a concrete precondition (authenticate the client, then retry) and even warns that start_login will not unlock this tool — genuinely useful routing. However, there is no guidance on when to prefer this over list_circle_member_channels or get_circle, so alternative selection is left to inference.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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