Check whether the Signal MCP server can read local messages and send outbound messages.

Returns boolean fields: source_dir_exists, signal_cli_available, signal_account_configured, read_available, send_available. Read-only with no side effects. Call this before read or send operations to verify the server is correctly configured.

List direct and group Signal chats from the local desktop database, sorted by most recent message.

Each result includes name, phone number, message count, and a preview of the last message. Read-only with no side effects. Use this to discover exact chat names before calling read_messages or search_messages. Use list_groups instead when you need group_id values for send_message.

Read messages from a single Signal chat, returned newest-first.

Each message includes sender, date, body text, reactions, and attachment metadata. Read-only with no side effects. Requires an exact chat name from list_chats. Use search_messages instead to find messages by keyword across chats.

Search Signal message bodies for a keyword, within one chat or across all chats, returned newest-first.

Read-only with no side effects. Use this to find messages by content. Use read_messages instead to browse a specific chat chronologically.

List Signal groups with group_id, name, description, members, and admin lists, sorted alphabetically.

Read-only with no side effects. Queries signal-cli when available; falls back to the local desktop database (without group_id). Use this to obtain group_id values needed by send_message. Use list_chats instead for a combined view of both direct and group chats.

List Signal chats ranked by recent activity, showing last message date, last reply date, and count of unanswered inbound messages.

Read-only with no side effects. Use this to identify chats that need a response. Use list_chats instead for a general chat directory with message previews.

Decrypt a locally stored Signal attachment and return the path to the decrypted file.

The encrypted_path and local_key values come from attachment metadata in read_messages or search_messages results. Read-only on Signal data; writes a decrypted copy to a temporary directory. Use this after reading messages that contain attachments.

Send a text message via Signal to a direct recipient or group.

This is a write operation that delivers a real message through signal-cli. Exactly one of phone_number, group_id, or chat_name must be supplied; providing zero or more than one raises an error. Rate-limited to 1 message per recipient per second and 10 messages per 60-second window globally. Requires signal-cli and SIGNAL_ACCOUNT to be configured — call get_status first to verify send_available is true. Returns target_type, target identifier, and timestamp on success.