Flow Castle MCP Server

Ready-to-use Telegram bot templates and an MCP server - build, edit, and deploy Telegram bots from Claude Code, Codex, Cursor, or any MCP-capable AI agent. No SDK boilerplate: describe the bot, and your agent assembles the flow. It is available as a remote MCP endpoint.

Teams that want a hosted communication endpoint instead of running a local process. The project is written in Dockerfile.

VERIFIED ACTIVE

LAST COMMIT 2026-07-25 · ★ 2 · #91 OF 99 MAINTAINED COMMUNICATION · VERIFIED 2026-08-25

MIT · Dockerfile · how we verify → /methodology

01 · Install Flow Castle

before you install - you'll need

Set FLOWCASTLE_MCP_TOKEN before connecting.

Claude Code

claude mcp add flowcastle-telegram-bot-templates --transport http https://api.flowcastle.ai/api/mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "flowcastle-telegram-bot-templates": {
      "url": "https://api.flowcastle.ai/api/mcp"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://api.flowcastle.ai/api/mcp

transport: streamable-http

endpoint alive - responded to MCP initialize · probed 2026-08-25

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as remote - your agent's requests go to api.flowcastle.ai

endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect

repo age created 2026-07-13 - young repo, little track record yet

license MIT - declared in the repository

registry vendor namespace ai.flowcastle - domain-verified with the official MCP registry

03 · What Flow Castle can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v1.0.0 · 2026-07-14

First public release. · 23 production Telegram bot templates (JSON, apply_actions-compatible) · MCP server reference: endpoint, auth, all 16 tools · action-schema.json snapshot from the live get_action_schema tool…

04 · Who maintains Flow Castle

FlowCastle is maintained by flowcastle. It's the only MCP server we track from this author; the repo dates to Jul 2026.

05 · Facts

repository: github.com/flowcastle/telegram-bot-templates
website: https://flowcastle.ai/
category: communication - ranked #91 of 99 actively-maintained communication servers as of 2026-08-25.
release cadence: 1 release in the last 90 days (latest 2026-07-14)
registry: ai.flowcastle/flowcastle (active, first published 2026-07-14)

06 · Flow Castle FAQ

What is Flow Castle?

Is Flow Castle still maintained?

Yes - as of 2026-08-25, its last commit was 2026-07-25 and it shipped 1 release in the last 90 days. We re-verify nightly.

How do I install Flow Castle?

Run `claude mcp add flowcastle-telegram-bot-templa --transport http https://api.flowcastle.ai/api/mcp`. The README documents one environment variable (FLOWCASTLE_MCP_TOKEN) to set first. Set FLOWCASTLE_MCP_TOKEN before connecting. You can also paste the ready-made client config above.

Does Flow Castle require authentication?

No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-08-25; you can connect without credentials.

07 · Alternatives to Flow Castle

Alternatives to Flow Castle

Maintained communication servers if Flow Castle isn't the fit.

Pairs well with

Servers that cover what Flow Castle doesn't - only shown when the pairing reason fits the companion.

More communication MCP servers · Telegram Archive MCP · Getcoherence MCP Server · Decker · Note MCP Server · Hackle