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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "nobounce-mcp": {
      "type": "http",
      "url": "https://nobounceapi.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

claude mcp add --transport http nobounce-mcp https://nobounceapi.com/mcp --header "X-API-Key: ${X_API_KEY}" --header "Authorization: ${X_API_KEY}"

[mcp_servers.nobounce-mcp]
url = "https://nobounceapi.com/mcp"
env_http_headers = { "X-API-Key" = "X_API_KEY", "Authorization" = "X_API_KEY" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "nobounce-mcp": {
      "type": "remote",
      "url": "https://nobounceapi.com/mcp",
      "enabled": true,
      "headers": {
        "X-API-Key": "{env:X_API_KEY}",
        "Authorization": "{env:X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "nobounce-mcp": {
      "type": "http",
      "url": "https://nobounceapi.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=nobounce-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbm9ib3VuY2VhcGkuY29tL21jcCIsImhlYWRlcnMiOnsiWC1BUEktS2V5IjoiJHtYX0FQSV9LRVl9IiwiQXV0aG9yaXphdGlvbiI6IiR7WF9BUElfS0VZfSJ9fQ%3D%3D"
}

{
  "servers": {
    "nobounce-mcp": {
      "type": "http",
      "url": "https://nobounceapi.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "nobounce-mcp": {
      "httpUrl": "https://nobounceapi.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

extensions:
  "nobounce-mcp":
    enabled: true
    name: "nobounce-mcp"
    type: streamable_http
    uri: "https://nobounceapi.com/mcp"
    headers:
      "X-API-Key": "${X_API_KEY}"
      "Authorization": "${X_API_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${X_API_KEY}, ${X_API_KEY}. The registry never accepts secret values.

Quality 73 / 100new

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2024-11-05; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: validate_emails_bulk (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); validate_email (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 255 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool history recorded for 3 of the 7 days needed

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

2 tools, about 255 tokens to load them all · tool set 075dfdc2ce49 · checked 2026-10-20 11:08 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 93 / 100

provenance80

liveness95

freshness100

hygiene100

+repository +namespace-matches-repo +reachable +uptime-87% +updated-5d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://nobounceapi.com/mcp` streamable-http	api_key `${X_API_KEY}`	yes	87%	213 ms	2024-11-05	2026-10-20

Tools (2)

`validate_email`	Validate a single email address in real time using NoBounce API. Checks RFC 5322 syntax, DNS MX records, 5,000+ disposable providers, role accounts, free webmail providers, typo suggestions, and optional SMTP handshake.
`validate_emails_bulk`	Validate a batch of up to 1,000 email addresses in a single call using NoBounce API. Returns per-email validation results plus summary counts (valid, invalid, disposable, catch_all, unknown).

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.notprathap/nobounce-mcp",
  "title": "NoBounce Email Validation",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://nobounceapi.com/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "X-API-Key",
          "isSecret": true,
          "isRequired": true,
          "description": "NoBounce API key (get a free key at https://nobounceapi.com/register)"
        }
      ]
    }
  ],
  "version": "1.0.0",
  "repository": {
    "url": "https://github.com/notprathap/nobounce-mcp",
    "source": "github"
  },
  "description": "Real-time single and bulk email validation (syntax, MX, 5,000+ disposable domains, SMTP)."
}