NamingSignal

Evidence-first product naming for agents and founders. NamingSignal generates broad, diverse name fields, checks exact domain registry evidence (RDAP) and developer namespaces, and researches finalists with sources and timestamps instead of vibes. Registry not-found is reported as likely unregistered, never as a purchase guarantee.

This repository contains the open-source clients and the deterministic naming core:

Package	What it is	Install
@namingsignal/mcp	Stdio MCP server exposing five read-only naming tools backed by the hosted API	npx -y @namingsignal/mcp
@namingsignal/cli	CLI with keyless local commands (RDAP checks, privacy-bounded briefs, deterministic generation, decision records) plus hosted research	npm install -g @namingsignal/cli

Quick links

• Site: https://namingsignal.com
• Developer docs and API keys: https://namingsignal.com/developers
• Hosted agent guide: https://namingsignal.com/agent-guide.txt
• OpenAPI contract: https://namingsignal.com/openapi.json (a static snapshot lives in openapi.json)
• Agent workflow guide: docs/agent-workflow.md

Remote MCP, no install

The fastest integration is the hosted Streamable HTTP MCP endpoint. Create a free API key at https://namingsignal.com/developers/keys, then:

claude mcp add --transport http naming-signal https://namingsignal.com/mcp \
  --header "Authorization: Bearer YOUR_NAMINGSIGNAL_KEY"

Codex ~/.codex/config.toml:

experimental_use_rmcp_client = true

[mcp_servers.naming_signal]
url = "https://namingsignal.com/mcp"
bearer_token_env_var = "NAMING_SIGNAL_API_KEY"

Prefer a local process? Use the stdio package instead; see packages/mcp.

Keyless local check

npx -y @namingsignal/cli check offhook nicless --tlds com,app --json

Live RDAP registry evidence, transparent scoring, and honest unknowns, with no account and no API key.

Scope of this repository

This repo contains the MCP and CLI clients plus the deterministic core they share: RDAP domain checking with calibration, exact namespace checks (npm, PyPI, GitHub, Apple), the brief compiler, import safety bounds, the transparent scoring rubric, and decision-record export. The hosted orchestration (model-led generation, editorial ranking, finalist research providers, accounts, and metering) runs at namingsignal.com and is not in this repo.

Contributing

Issues and pull requests are welcome at https://github.com/moekoelueker/namingsignal/issues. Please do not file security reports as public issues; see https://namingsignal.com for contact details.

License

MIT, Copyright (c) 2026 Zena Labs LLC. See LICENSE.

NamingSignal output is preliminary business research, not legal advice, trademark clearance, or a registrar guarantee.