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EverArt MCP Server vs Slack MCP Server

A side-by-side look at pricing, capabilities, pros, cons, and our editorial scores.

 EverArt MCP Server logo
EverArt MCP Server
MCP Servers
Slack MCP Server logo
Slack MCP Server
MCP Servers
TaglineArchived MCP server that lets Claude and MCP clients generate images via EverArt's FLUX, SD 3.5 and Recraft models.Archived reference MCP server that lets Claude and other MCP clients read and post in a Slack workspace via a bot token.
CategoryMCP ServersMCP Servers
PricingFree· MCP server is free and open source; requires an EverArt account and API key (EverArt itself is a paid image-generation service with credit-based pricing).Free· Free / open-source (MIT). Requires a Slack workspace and a Slack bot token; Slack itself is free/paid.
ModelFLUX 1.1, FLUX 1.1 Ultra, Stable Diffusion 3.5, Recraft (Real and Vector) via EverArt—
Editorial score——
Use cases
In-chat image generation from Claude DesktopIDE-driven mockup and illustration generation in VS CodePrompt-to-image reference art for design brainstormingAgent-invoked cover art and thumbnail generationReference implementation for building custom image-API MCP serversQuick FLUX 1.1 Ultra renders inside an LLM workflow
Channel triage and summarisationAutomated thread digestsPosting AI-generated status updatesCross-channel search and reportingStandup and retro note postingOn-call escalation repliesUser and profile lookup for routingReaction-based workflow signallingMCP server reference implementation
Pros
  • Drop-in MCP server that lets Claude Desktop or VS Code generate images through natural-language tool calls
  • Exposes five current image models (FLUX 1.1, FLUX 1.1 Ultra, SD 3.5, Recraft Real, Recraft Vector) through a single tool
  • Tiny TypeScript codebase makes it a useful reference for building your own image-API MCP wrapper
  • Installs via npx or Docker with a one-click VS Code button, so setup is a few minutes
  • Open source under the MCP servers repo license, easy to fork and extend
  • Official reference implementation from the modelcontextprotocol project — small, readable TypeScript that documents the MCP tool pattern well
  • Covers the eight highest-value Slack primitives (list, post, reply, react, history, thread, users, profile) with minimal ceremony
  • Ships as both an npx package and a Docker image, so it drops straight into Claude Desktop, Cursor, or any MCP client with a JSON config snippet
  • Standard Slack bot-token auth (xoxb-) with clearly scoped OAuth permissions — easy to reason about and to revoke
  • Open-source under MIT, so forking or vendoring for internal hardening is straightforward
  • Good starting point for learning how to write your own MCP server against a REST API
Cons
  • Officially archived in May 2025 and no longer maintained upstream
  • Only one tool (generate_image) with no editing, variation, upscaling or img2img workflows
  • Fixed 1024x1024 output, no aspect-ratio or resolution controls
  • Requires a paid EverArt account and API key; image generation is not free
  • No prompts or resources exposed, so richer agentic patterns need custom code
  • Archived by the maintainer on 29 May 2025 — no upstream bug fixes, security patches, or Slack API compatibility updates
  • Read-only surface for channels (public channels only by default) and no DM, private-channel, search, files, or canvas support out of the box
  • No pagination helpers or rate-limit backoff beyond what the Slack SDK provides, so bulk history pulls in large workspaces can be fragile
  • Requires a workspace admin to install a bot app and mint a token, which is a real blocker in locked-down enterprise Slack tenants
  • Bot-token model means every action is attributed to the bot user, not the human operating the assistant, which complicates audit trails
Websitegithub.comgithub.com
Pick EverArt MCP Server if
  • ✅ Drop-in MCP server that lets Claude Desktop or VS Code generate images through natural-language tool calls
  • ✅ Exposes five current image models (FLUX 1.1, FLUX 1.1 Ultra, SD 3.5, Recraft Real, Recraft Vector) through a single tool
  • ✅ Tiny TypeScript codebase makes it a useful reference for building your own image-API MCP wrapper
  • ✅ Installs via npx or Docker with a one-click VS Code button, so setup is a few minutes
Pick Slack MCP Server if
  • ✅ Official reference implementation from the modelcontextprotocol project — small, readable TypeScript that documents the MCP tool pattern well
  • ✅ Covers the eight highest-value Slack primitives (list, post, reply, react, history, thread, users, profile) with minimal ceremony
  • ✅ Ships as both an npx package and a Docker image, so it drops straight into Claude Desktop, Cursor, or any MCP client with a JSON config snippet
  • ✅ Standard Slack bot-token auth (xoxb-) with clearly scoped OAuth permissions — easy to reason about and to revoke
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