NeverBounce MCP by usefulapi MCP Server

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answering

NeverBounce MCP by usefulapi is answering right now. Last checked 10 min ago. It exposes 8 tools. Last commit 1 Nov 2026.

MCP server for NeverBounce — business email verification, credits and bulk jobs.

Uptime history 15 hours of history

15 hours agonow

100.0%

Uptime 24h

54 of 54 checks

Tools

read from the server

223 ms

Response time

average over 24h

Stars

last commit 1 Nov 2026

Nothing serious here today

Today is the operative word: we check NeverBounce MCP by usefulapi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add neverbounce --transport http https://neverbounce.usefulapi.io/mcp

Settings → Connectors → Add custom connector, then paste this address

https://neverbounce.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.neverbounce]
url = "https://neverbounce.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "neverbounce": {
      "url": "https://neverbounce.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "neverbounce": {
      "type": "http",
      "url": "https://neverbounce.usefulapi.io/mcp"
    }
  }
}

Available tools 8

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

neverbounce

neverbounce_create_job

WRITE: creates a bulk verification job from up to 100 e-mail addresses given in this call, and has NeverBounce parse it. It does NOT start the verification and spends NO credits; run neverbounce_start_job afterwards (that spends 1 credit per billable address). Put ALL the addresses of one list into ONE job: NeverBounce's rules allow 10 concurrent jobs and 50 runs a day, and many small jobs in a short time can get the account locked. Returns the job_id. POST /jobs/create.

neverbounce_download_job_results

The results of a complete job as CSV text (the submitted columns plus email_status), cut at 200000 characters with a note when longer (use neverbounce_get_job_results to page through large jobs). By default every result type is included; set a type to false to leave it out. POST /jobs/download.

neverbounce_get_account_info

Credits left (paid and free), credits used, and how many verification jobs are completed, queued, processing or under review. Free: it spends no credits. POST /account/info.

neverbounce_get_job

One verification job: status (waiting, parsing, running, complete, failed, under_review...), failure reason, timestamps, totals (records, billable = credits it will use, processed, valid, invalid, catchall, disposable, unknown, duplicates, bad_syntax), bounce estimate and percent complete. Poll this until status is complete. POST /jobs/status.

neverbounce_get_job_results

Per-address results of a job: the submitted row (data) and its verification (result, flags, suggested_correction, address info). Paged; use neverbounce_download_job_results for a CSV. The job must be complete. POST /jobs/results.

neverbounce_list_jobs

Bulk verification jobs of the account (most recent first as NeverBounce returns them) with id, status, filename, timestamps, totals per result (valid, invalid, catchall, disposable, unknown, duplicates, bad_syntax), bounce estimate and percent complete. Filter by id, exact filename or status. POST /jobs/search.

neverbounce_start_job

WRITE: STARTS a created job and SPENDS 1 credit per billable address (shown as total.billable in neverbounce_get_job); it cannot be stopped or undone. Safety: you must pass max_credits, and the job is refused when its billable count is above it or above 1000 (start bigger jobs in the NeverBounce dashboard). The job must be in status waiting or waiting_analyzed. With run_sample true it only runs the free sample analysis (estimated bounce rate) and spends nothing. POST /jobs/start.

neverbounce_verify_email

WRITE: SPENDS 1 of your NeverBounce credits per call. Verifies ONE e-mail address and returns result (valid, invalid, disposable, catchall or unknown), flags (e.g. has_dns_mx, role_account, free_email_host), a suggested correction for typos like gmal.com, and optionally the parsed address parts. NeverBounce's usage rules: use this for a single address at the point of entry; do NOT call it in a loop over a list or database (the account can be locked) - use neverbounce_create_job for lists. POST /single/check.

Endpoints

URL	Transport	State	Latency	Checked
https://neverbounce.usefulapi.io/mcp	streamable-http	answering	245 ms	10 min ago

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NeverBounce MCP by usefulapi — questions

Answers built from our own checks of this server.

What can NeverBounce MCP by usefulapi do?

It exposes 8 tools, read directly from the server on our last check. Among them: neverbounce_create_job, neverbounce_download_job_results, neverbounce_get_account_info, neverbounce_get_job, neverbounce_get_job_results, neverbounce_list_jobs and 2 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is NeverBounce MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 54 of 54 checks got a reply (100.0%), average response time 223 ms. The bar chart above shows every period we have measured.

How do I connect NeverBounce MCP by usefulapi?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does NeverBounce MCP by usefulapi need an API key?

No. NeverBounce MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 8 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is NeverBounce MCP by usefulapi?

It answers our handshake in 223 ms on average, which is faster than 63% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is NeverBounce MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 1 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at neverbounce.usefulapi.io, which runs on its operator's own terms.