A safety-bounded MCP server for email syntax, DNS, and opt-in SMTP checks
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"mcp-email-validator","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
Everything here was measured by our prober or read from a registry. Nothing is self-reported.
Attributed to the source that supplied each field. Treated as claims, not facts.
# Email Validator MCP An MCP server for checking email syntax and DNS mail routes without sending a message. Optional SMTP probing provides a recipient acceptance signal; it does not prove ownership or guarantee delivery. ## Install a published release Requires [uv](https://docs.astral.sh/uv/getting-started/installation/): ```bash uvx --python 3.13 [email protected] ``` Published versions are listed on [PyPI](https://pypi.org/project/mcp-email-validator/). If the version is not available yet, use the GitHub command below. Publishing is managed through [GitHub Actions](https://github.com/jayanth-mkv/agent-mcp-registry/blob/main/docs/publishing.md). ## Run from GitHub without cloning Requires [uv](https://docs.astral.sh/uv/getting-started/installation/) and Git. uv downloads the selected package and manages Python 3.13 and its dependencies: ```bash uvx --python 3.13 --from "git+https://github.com/jayanth-mkv/agent-mcp-registry.git@main#subdirectory=mcp-email-validator" mcp-email-validator ``` Only this MCP and its runtime dependencies are installed. uv fetches the repository internally; you do not need a local checkout. To pin the source, replace `main` with a release tag or full commit SHA. ## Install from source From this directory, with Python 3.13+ and [uv](https://docs.astral.sh/uv/getting-started/installation/): ```bash uv sync --locked --no-dev uv run --locked --no-dev mcp-email-validator ``` The default transport is stdio. Configure your MCP client using the [repository example](https://github.com/jayanth-mkv/agent-mcp-registry#connect-an-mcp-client). No API key is required; DNS checks need network access. For Streamable HTTP: ```bash uv run --locked --no-dev mcp-email-validator --transport http --host 127.0.0.1 --port 8003 ``` Endpoint: `http://127.0.0.1:8003/mcp`. Legacy SSE is available with `--transport sse` at `/sse`. HTTP and SSE have no authentication; keep them on loopback unless protected separately. ## Tools | Tool | Requir…
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