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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "email-verification": {
      "type": "http",
      "url": "https://app.emaillistvalidation.com/mcp",
      "headers": {
        "Authorization": "Bearer ${EMAIL_VERIFICATION_TOKEN}"
      }
    }
  }
}

claude mcp add --transport http email-verification https://app.emaillistvalidation.com/mcp --header "Authorization: Bearer ${EMAIL_VERIFICATION_TOKEN}"

[mcp_servers.email-verification]
url = "https://app.emaillistvalidation.com/mcp"
bearer_token_env_var = "EMAIL_VERIFICATION_TOKEN"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "email-verification": {
      "type": "remote",
      "url": "https://app.emaillistvalidation.com/mcp",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:EMAIL_VERIFICATION_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "email-verification": {
      "type": "http",
      "url": "https://app.emaillistvalidation.com/mcp",
      "headers": {
        "Authorization": "Bearer ${EMAIL_VERIFICATION_TOKEN}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=email-verification&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBwLmVtYWlsbGlzdHZhbGlkYXRpb24uY29tL21jcCIsImhlYWRlcnMiOnsiQXV0aG9yaXphdGlvbiI6IkJlYXJlciAke0VNQUlMX1ZFUklGSUNBVElPTl9UT0tFTn0ifX0%3D"
}

{
  "servers": {
    "email-verification": {
      "type": "http",
      "url": "https://app.emaillistvalidation.com/mcp",
      "headers": {
        "Authorization": "Bearer ${EMAIL_VERIFICATION_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "email-verification": {
      "httpUrl": "https://app.emaillistvalidation.com/mcp",
      "headers": {
        "Authorization": "Bearer ${EMAIL_VERIFICATION_TOKEN}"
      }
    }
  }
}

extensions:
  "email-verification":
    enabled: true
    name: "email-verification"
    type: streamable_http
    uri: "https://app.emaillistvalidation.com/mcp"
    headers:
      "Authorization": "Bearer ${EMAIL_VERIFICATION_TOKEN}"
    timeout: 300

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

Quality 79 / 100good

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: get_api_key (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_lists (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); explain_result (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 771 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changes1 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

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

9 tools, about 771 tokens to load them all · tool set 74da004c6a03 · tools last changed 2026-10-12 · checked 2026-10-19 10:52 UTC

Tool changes

2026-10-12get_api_keychangeddescription
before
Get a free API key for this server (no account needed; 25 email verifications per day). Returns the key once — reconnect with 'Authorization: Bearer <api_key>' to use the other tools.
after · 60% of words in common
Get your own free API key for this server (no account needed; 25 email verifications per day). Optional: the verification tools already work without a key on a shared trial. Returns the key once — reconnect with 'Authorization: Bearer <api_key>' for your own quota and the list tools.

Full history: list_changes · trend: quality JSON.

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 82 / 100

no-repository

provenance55

liveness99

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-98% +updated-11d-ago -no-repository

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://app.emaillistvalidation.com/mcp` streamable-http	none	yes	98%	515 ms	2024-11-05	2026-10-19

Tools (9)

`estimate_cost`	Estimate the credit cost of a verification before running it, and whether the user can afford it. Provide either a count of emails, a list_id to re-verify, or an operation ('single'/'finder'). Always quote this before proposing anything billable.
`explain_result`	Explain what a verification status or reason means in plain English, with a send recommendation. Covers valid, invalid, catch-all/accept-all, unknown, greylisted, disposable, role, free, spam-trap, abuse, do-not-mail, no-mx, disabled, and network. Use when a user asks what a result means.
`get_api_key`	Get your own free API key for this server (no account needed; 25 email verifications per day). Optional: the verification tools already work without a key on a shared trial. Returns the key once — reconnect with 'Authorization: Bearer <api_key>' for your own quota and the list tools.
`get_batch_status`	Get the progress and status of a bulk verification list/job by id.
`get_credit_balance`	Get the current credit balance and a short usage summary for the account.
`get_list`	Get the details of a single bulk verification list by its id.
`list_lists`	List the user's bulk verification lists/jobs, most recent first.
`verify_batch`	Verify a batch of email addresses (up to 25 per call with an agent key). Returns per-email verdicts and saves a list. Costs 1 credit per email.
`verify_email`	Verify the deliverability of a single email address. Returns a verdict (valid, invalid, risky, unknown). Costs 1 credit.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "com.emaillistvalidation/email-verification",
  "title": "Email List Validation Email Verification",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://app.emaillistvalidation.com/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "Authorization",
          "isSecret": true,
          "description": "Bearer <api_key>. Get a free key (25 verifications/day) with the get_api_key tool or POST https://app.emaillistvalidation.com/agent-gateway/register"
        }
      ]
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://app.emaillistvalidation.com/agent-gateway",
  "description": "Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key."
}