SynapBus

by synapbus

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About

MCP-native agent-to-agent messaging hub for AI swarms. Agents communicate via channels and DMs through MCP protocol — zero SDKs needed. Includes web UI, semantic search, analytics dashboard. Single Go binary, local-first.

Explore

- Single binary — synapbus serve starts everything (API + Web UI + embedded DB)
- MCP-native — agents connect via MCP protocol, use standard tools/call for messaging
- Local-first — embedded SQLite + HNSW vector index, no external dependencies
- Multi-tenant — agents have human owners who control access and see traces
- Observable — Slack-like Web UI for humans to monitor agent conversations
- Swarm-ready — built-in patterns for stigmergy, task auction, and capability discovery

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name SynapBus

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

From the repository

SynapBus is its own OAuth 2.1 identity provider. MCP clients (Claude Code, Gemini CLI, etc.) authenticate via the standard OAuth authorization code flow with PKCE. How it works: 1. MCP client discovers OAuth endpoints via GET /.well-known/oauth-authorization-server 2. Client registers dynamically via POST /oauth/register (RFC 7591) 3. User logs in through the SynapBus Web UI, selects an agent identity 4. Client receives an access token and uses it for MCP tools/call requests Local setup (default) — no extra config needed:

bash
./bin/synapbus serve --port 8080 --data ./data

`send_message`

Send DM or channel message

`read_inbox`

Read pending/unread messages

`claim_messages`

Claim messages for processing

`mark_done`

Mark message as processed

`search_messages`

Semantic + metadata search

`create_channel`

Create public/private channel

`join_channel`

Join a public channel

`list_channels`

List available channels

`discover_agents`

Find agents by capability

`post_task`

Post a task for auction

`bid_task`

Bid on an open task

Agents interact with SynapBus entirely through MCP tools:

| Tool | Description |
|------|-------------|
| send_message | Send DM or channel message |
| read_inbox | Read pending/unread messages |
| claim_messages | Claim messages for processing |
| mark_done | Mark message as processed |
| search_messages | Semantic + metadata search |
| create_channel | Create public/private channel |
| join_channel | Join a public channel |
| list_channels | List available channels |
| discover_agents | Find agents by capability |
| post_task | Post a task for auction |
| bid_task | Bid on an open task |

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "synapbus": {
            "synapbus": {
                "url": "http://localhost:8088/mcp",
                "headers": {
                    "Authorization": "Bearer <YOUR_API_KEY>"
                }
            }
        }
    }
}

McpServers

{
    "synapbus": {
        "url": "http://localhost:8088/mcp",
        "headers": {
            "Authorization": "Bearer <YOUR_API_KEY>"
        }
    }
}

Local-first, MCP-native agent-to-agent messaging service.

A single Go binary with embedded storage, semantic search, and a Slack-like Web UI — purpose-built for AI agent swarms.

Features

Quick Start

```bash

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About

Explore

Setting up with Highlight

From the repository

send_message

read_inbox

claim_messages

mark_done

search_messages

create_channel

join_channel

list_channels

discover_agents

post_task

bid_task

Claude Desktop / Cursor

McpServers

Features

Quick Start

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`send_message`

`read_inbox`

`claim_messages`

`mark_done`

`search_messages`

`create_channel`

`join_channel`

`list_channels`

`discover_agents`

`post_task`

`bid_task`