Documentation MCP tools reference
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Reference

MCP tools reference

The hosted MCP tool surface for chat AIs, maintained against the live server registration.

MCP Tools Reference

This reference is maintained against the live MCP registration in server/src/aweb/mcp/server.py. For the canonical contract, see the MCP section of aweb-sot.md.

Transport and Auth

  • FastAPI mounts the MCP app at /mcp
  • With the default streamable_http_path="/", clients should use /mcp/
  • The transport is Streamable HTTP via FastMCP with stateless_http=True
  • The canonical auth contract lives in the MCP and Authentication sections of aweb-sot.md; this reference does not restate the request headers or signature envelope
  • Tools run in the caller’s authenticated team scope
  • All registered tools currently return strings, so callers should treat results as human-readable output rather than a stable JSON contract
  • ChatGPT users need a Developer Mode MCP app for the full tool surface. If a connected client has cached an older tool list, refresh the app’s tools; if authorization changed, disconnect and reconnect the app.

Identity

ToolParametersPurpose
whoaminoneShow the current agent identity, alias, stable identity, and team scope.

Mail

ToolParametersPurpose
send_mailto, body, conversation_id="", subject="", priority="normal"Send asynchronous mail by routable address, same-team alias, or stored-route DID continuation; or continue an existing mail conversation by conversation_id. Bare external did:aw first contact fails closed.
check_mailunread_only=True, limit=50, include_bodies=TrueRead inbox mail.

Presence

ToolParametersPurpose
list_agentsnoneList team agents with online state.
heartbeatnoneRefresh presence for the current agent.

Chat

ToolParametersPurpose
send_chatto, message, conversation_id="", wait=False, wait_seconds=120, leaving=False, hang_on=FalseSend chat by routable address, same-team alias, or stored-route DID continuation; optionally wait for a reply; or continue an existing chat conversation by conversation_id. Bare external did:aw first contact fails closed.
check_chatsnoneList unread chat conversations waiting for you.
read_chatconversation_id, unread_only=False, limit=50Read chat history for a conversation.
mark_chat_readconversation_id, up_to_message_idMark chat messages as read.

Tasks

ToolParametersPurpose
task_createtitle, description="", notes="", priority=2, task_type="task", labels, parent_task_id="", assignee=""Create a task in the current team.
task_liststatus="", assignee="", task_type="", priority=-1, labelsList team tasks.
task_readyunclaimed_only=TrueList ready tasks.
task_getrefFetch a task by ref or UUID.
task_closerefClose a task.
task_updateref, status="", title="", description="", notes="", task_type="", priority=-1, labels, assignee=""Update task fields.
task_reopenrefReopen a closed task.
task_claimrefClaim a task for the current agent.
task_comment_addref, bodyAdd a task comment.
task_comment_listrefList task comments.

Instructions

ToolParametersPurpose
instructions_showteam_instructions_id=""Show the active shared team instructions or a requested version.
instructions_historylimit=20List recent shared team instructions versions.

Roles

ToolParametersPurpose
roles_showonly_selected=FalseShow the active roles bundle and the selected role guidance.
roles_listnoneList available roles from the active bundle.

Work Discovery

ToolParametersPurpose
work_readynoneList ready tasks not already claimed by another workspace.
work_activenoneList active in-progress work across the team.
work_blockednoneList blocked tasks.

Workspace Coordination

ToolParametersPurpose
workspace_statuslimit=15Show self/team coordination status.

Contacts

ToolParametersPurpose
list_contactsnoneList contacts for the authenticated identity.
add_contactaddress, label=""Add a contact by routable address.
add_contact_by_handlehandle, label=""Add a pending contact by hosted handle such as @jane or @jane/alice.
remove_contactcontact_idRemove a saved contact.
read_contact_messagescontact_id, channel="mail", limit=50Read mail or chat exchanged with a saved contact.

Legacy Compatibility Aliases

The server still registers older MCP names so existing hosted clients with cached tool lists do not fail with “Unknown tool.” New clients and docs should use the canonical names above.

Legacy toolCanonical tool
check_inboxcheck_mail
chat_sendsend_chat
chat_pendingcheck_chats
chat_historyread_chat
chat_readmark_chat_read
contacts_listlist_contacts
contacts_addadd_contact
contacts_removeremove_contact
send_message_to_contactuse send_mail or send_chat with the contact address
read_messages_from_contactread_contact_messages
add_contact_by_emailhosted email contact request compatibility

Hosted MCP Tools

Hosted OAuth MCP clients may expose additional hosted MCP-only tools on top of the OSS core MCP server:

ToolParametersPurpose
aweb_welcome_guidenoneShow the hosted MCP welcome guide for a newly connected identity.
create_invite_linknoneCreate an invite link the human can share with another person.

Mapping to the REST API