Spark for Claude 1.3.0

Adds calendar event management and send access to Spark for Claude.

Assets

• Spark.mcpb - Claude Desktop extension bundle (MCP server). Import via Claude Desktop → Settings → Extensions to install.
• Spark.skill - Claude skill archive. Import into Claude to enable the Spark skill. Additional persona and recipe workflows are attached as separate .skill files.

What's new

• event tool - create, update, delete, and RSVP to calendar events, and invite or remove attendees (requires send access).
• Send access - a new per-account / per-shared-inbox access level that enables sending and scheduling drafts and managing calendar events, alongside the existing read-only and triage levels.

Spark for Claude 1.2.2

Spark for Claude now runs on Windows. This release also fixes attachment handling in the sandboxed (App Store) Spark build.

Assets

• Spark.mcpb - Claude Desktop extension bundle (MCP server). Double-click or import via Claude Desktop to install.
• Spark.skill - Claude skill archive. Import into Claude to enable the Spark CLI skill.

What's new

• Windows support - the connector now runs on Windows alongside macOS, resolving spark.exe from the user PATH

Fixes

• Fixed draft and comment attachments failing in the sandboxed (App Store) Spark build, which can't read files from arbitrary paths. The connector now streams file bytes to the CLI over stdin via the public --attach-stream API; oversize files are rejected before a draft is created, and unreadable paths fall back to --attach.

Spark for Claude 1.2.1

Adds attachment reading, saved templates, and draft sharing - on top of all the read-only and write capabilities from 1.1.0.

Assets

• Spark.mcpb - Claude Desktop extension bundle (MCP server). Double-click or import via Claude Desktop to install.
• Spark.skill - Claude skill archive. Import into Claude to enable the Spark CLI skill.

What's new

• attachment - read an individual attachment's contents directly through MCP (images, audio, text, PDFs, and other files); auto-downloads if not cached
• templates - list saved Spark message templates (personal and team)
• template - show a single template with its placeholders
• draft enhancements:
  • apply a saved template with template / placeholder
  • share drafts with teammates (team, user, remove_user, allow_send, disallow_send, unshare)
• search - new keyword-less list mode: filter emails across every folder in every account, not just the Unified Inbox

Spark for Claude 1.1.0

Adds write access so Claude can draft, comment, and triage in Spark - on top of all the read-only capabilities from 1.0.0.

Assets

• Spark.mcpb - Claude Desktop extension bundle (MCP server). Double-click or import via Claude Desktop to install.
• Spark.skill - Claude skill archive. Import into Claude to enable the Spark CLI skill.

What's new

Triage and write tools (require triage access in Spark > Settings > AI Agents for the relevant account or shared inbox):

• draft - create or edit drafts: new, reply, forward, or update; supports attachments and markdown body
• comment - post team chat comments on a thread; auto-shares the thread if needed
• action - archive, pin, snooze, move, label, assign, share, mark as done, reclassify smart category, and more
• contact-action - block/accept contacts, change category, mark important/primary, toggle auto-summary

Each account and shared inbox keeps its own access level (read-only or triage), configurable in Spark Desktop.

Spark for Claude 1.0.0

Initial release of the Spark Claude extension.

Assets

• Spark.mcpb — Claude Desktop extension bundle (MCP server). Double-click or import via Claude Desktop to install.
• Spark.skill — Claude skill archive. Import into Claude to enable the Spark CLI skill.

Features

Read-only access to Spark on macOS:

• Browse accounts, folders, and emails (with Gmail-style filters and pagination)
• Search emails by topic (keyword + semantic)
• Read full threads with headers, bodies, and attachments
• List calendar events and find mutual availability
• Look up contacts and team info
• List and read meeting transcripts with summaries and notes

Requires Spark Desktop running on macOS.