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List Teammates

list_teammates
Read-only

The caller's active-workspace teammates — the same roster the Team page shows.

Returns {'teammates': [{'email', 'display_name', 'role' ('admin'|'member'), 'status' ('invited'|'active'), 'is_you', 'joined_at', 'invited_by', 'share_conversations', 'allow_team_actions'}, ...]}, ordered by join time. Includes the caller (flagged 'is_you'). A solo user with no workspace gets {'teammates': []}.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
on_behalf_ofNoAn agency client's email, from list_agency_clients, to run this call in that client's account: their agents, settings, connected accounts, and credits. Omit it to act on your own account.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • addedInput schema / properties / on_behalf_of
      Added value: +{
      +  "anyOf": [
      +    {
      +      "type": "string"
      +    },
      +    {
      +      "type": "null"
      +    }
      +  ],
      +  "default": null,
      +  "description": "An agency client's email, from list_agency_clients, to run this call in that client's account: their agents, settings, connected accounts, and credits. Omit it to act on your own account."
      +}
  2. First observed

TDQS

A3.9/5.0
Behavior4/5

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

readOnlyHint=true already covers the safety profile, but the description adds real context beyond annotations: ordering by join time, inclusion of the caller via 'is_you', the exact field set on each teammate, and the solo-user empty-list case. It does not cover pagination or any rate limits, so it stops short of a 5.

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

Conciseness4/5

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

Purpose is front-loaded in the first clause, followed by return shape, ordering, and edge cases. The field enumeration is dense but justified given there is no output schema; nothing reads as 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 no output schema, the description correctly compensates by documenting the return object, ordering, and the empty-workspace case, which is what an agent needs to interpret the response. The only gap is absent routing guidance to sibling listing tools.

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 description coverage is 100% and the single on_behalf_of parameter is fully documented in the schema, so the schema does the heavy lifting. The description never mentions the parameter, so it adds nothing over the structured field — the baseline 3 applies.

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

Purpose5/5

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

States a specific verb and resource ('list the caller's active-workspace teammates') and pins the scope with 'the same roster the Team page shows', which cleanly separates it from siblings like list_agency_clients and list_team_shared_agents. An agent can identify the tool without opening the schema.

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?

Usage is only implied through scope language ('active-workspace', the Team page analogy) and the on_behalf_of schema note about agency clients. There is no explicit when-to-use versus list_team_shared_agents or list_agency_clients, and no stated prerequisites such as needing workspace membership.

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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