Integration

NullBounce integration

NullBounce verifies email addresses in real time: send one address and get back a verdict (Safe, Invalid, Risky or Unknown), the SMTP deliverability state, the reason when it failed, and whether the address is disposable, a role inbox or a free webmail account. Use it to clean a lead before it reaches a CRM, gate a sign-up form, or check a list one address at a time. Each check uses one prepaid credit, and Unknown results are refunded. Bulk list uploads and the credit balance are not exposed (the balance route answers a bare number the platform cannot read). Authentication is an API key from the NullBounce dashboard (API Keys page), sent in the Authorization header with the Token prefix; the API allows 10 requests per second.

Connect NullBounce How integrations work

Ask it in chat

Say what should happen.
The workflow builds itself.

When this happens, do that in NullBounce.Built from the 1 NullBounce tool below, on the connection you add once.

What you can do with NullBounce

Each of these is one operation on one endpoint, available both as a workflow step and as a tool an AI agent can call on its own. Nothing bundles several operations into one action, so what a run did stays readable afterwards.

Each badge shows the default agent permission of an endpoint (allowed: an agent calls it without asking; ask first: you are asked before an agent calls it, when the agent or chat asks permission for sensitive actions; never: no agent may call it), which every user can change endpoint by endpoint in their credential settings.

Most endpoints run on the free plan. A few, mainly the ones that publish on your behalf, need a paid plan.

validate_emailValidate emailPOSTAgents: ask firstVerifies one email address live (syntax, DNS/MX, SMTP handshake) and returns result Safe, Invalid, Risky or Unknown, status_text, substatus_text and the disposable, role and free flags. Uses 1 credit; Unknown is free.

Use NullBounce from Claude Code, Cursor or Codex

Connect NullBounce in LiveContext, create an API key in Settings, then add the LiveContext MCP server to your client. Its NullBounce operations become tools the client can call, next to every other integration you connected.

Claude Code

claude mcp add --transport http livecontext https://livecontext.ai/mcp --header "X-API-Key: YOUR_API_KEY"

Codex (~/.codex/config.toml)

[mcp_servers.livecontext]
url = "https://livecontext.ai/mcp"

[mcp_servers.livecontext.http_headers]
"X-API-Key" = "YOUR_API_KEY"

Cursor, Claude Desktop and other JSON configs

{
  "mcpServers": {
    "livecontext": {
      "type": "http",
      "url": "https://livecontext.ai/mcp",
      "headers": {
        "X-API-Key": "YOUR_API_KEY"
      }
    }
  }
}

Set up the MCP server step by step

How to connect NullBounce

Create your workspace
Sign up free. Nothing to install.
Connect NullBounce once
Add your NullBounce connection in Settings. Every tool from this integration reuses it, and secrets are encrypted at rest and visible only to you.
Describe the job in chat
The workflow builds itself in front of you and picks the endpoints it needs. Drag the steps yourself on the canvas whenever you would rather be explicit.