Where should I start: API, MCP, or Playground?

Start with Playground for quick testing, then use API docs for production integration. Use MCP if your agent framework supports tool-calling workflows.

How do I authenticate API requests?

Pass your MemBrain API key in the request headers as documented in the API reference. Keep keys server-side in production.

Which endpoint stores a memory and is it synchronous?

Use the Store a memory endpoint. Ingestion is asynchronous and returns a job id that you can poll for completion status.

How do I search and traverse graph relationships?

Use search endpoints for semantic recall and graph endpoints for neighborhood expansion, path finding, and traversal across linked memories.

Where can I test requests before coding integration?

Use the Interactive Playground under Docs to run request flows and inspect responses before wiring your app.

Get neighborhood — MemBrain API Reference

MEMBRAIN

REST API

Get neighborhood

Return all memories within N hops of a given memory.

GET/api/v1/graph/neighborhood

Query Parameters

memory_idstringrequired

Center memory ID

hopsnumber

Number of hops to expand

Max length: 2

API Key

Stored locally, never sent to servers

Get neighborhood

const options = {  method: 'GET',  headers: {'X-API-Key': 'mb_live_xxx'},};fetch('https://api.mem-brain.io/api/v1/graph/neighborhood', options)  .then(res => res.json())  .then(res => console.log(res))  .catch(err => console.error(err));

{
  "center": "mem_abc123",
  "nodes": [
    {
      "id": "mem_001"
    },
    {
      "id": "mem_002"
    }
  ],
  "edges": [
    {
      "source": "mem_abc123",
      "target": "mem_001"
    }
  ]
}