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ZeroBounce
mcp.zerobounce.net/oauth/mcp
Not ready
Protocol
MCP negotiation succeeds (v1/v2)
Failed to connect: Could not connect via streamable HTTP: Server returned 403: Version negotiation failed: the server denied access (HTTP 403)
Overview
- Author
- ZeroBounce
- Verification
- community
- Auth
- None — public endpoint
- Categories
- productivity
- Works with
- claudeclaude-apiclaude-codeclaude-desktop
- Docs
- Documentation
batch_email_validationsingle_email_validationRelated MCP servers
FAQ
ZeroBounce install, tools, readiness, and alternatives.
How do I add ZeroBounce to Claude, ChatGPT, or Cursor?
Add ZeroBounce to Claude, ChatGPT, or Cursor by connecting its remote MCP URL in each client's MCP settings. In Claude, add a custom connector. In ChatGPT, add an MCP app. In Cursor, add an MCP server under Settings. The MCP URL is https://mcp.zerobounce.net/oauth/mcp.
Is ZeroBounce MCP ready for ChatGPT and Claude?
As of September 15, 2026, ZeroBounce scores 0/100 on Manufact's MCP publishing checklist. The scan does not yet meet ChatGPT publishing checks and does not yet meet Claude publishing checks.
What tools does the ZeroBounce MCP server provide?
ZeroBounce provides these MCP tools: batch_email_validation and single_email_validation.
What are the best alternatives to ZeroBounce?
As of September 16, 2026, alternatives to ZeroBounce in productivity on the Manufact MCP catalog include AI Video Prompt Generator: Vivideo.ai, Autodesk Product Help, BoardWise, Credits.fm, and ecoExperten Energieausweis.
Does ZeroBounce MCP require authentication?
ZeroBounce does not require authentication. It is a public MCP endpoint you can connect without logging in.
Why is ZeroBounce failing MCP readiness checks?
ZeroBounce scored 0/100 on the latest Manufact MCP publishing checklist, below the 70-point ready band. The top failing check is MCP negotiation succeeds (v1/v2). Failed to connect: Could not connect via streamable HTTP: Server returned 403: Version negotiation failed: the server denied access (HTTP 403) Paste the MCP URL into the Manufact MCP catalog to rerun the scan.
Who develops ZeroBounce?
ZeroBounce is developed by ZeroBounce. It is listed as community on the Claude connector directory.
Not your MCP?
Scan any public or OAuth MCP URL against ChatGPT and Claude publishing checks. No account required.