Signal by StackEnhance

Official3 tools

by stackenhance · TypeScript

How often 750+ e-commerce brands send marketing emails: counts, send dates, recent subject lines.

com.stackenhance/signal MCP Server

The MCP server com.stackenhance/signal provides access to information about how often 750+ e-commerce brands send marketing emails. It focuses on email counts, send dates, and recent subject lines, based on the server description provided.

🛠️ Key Features

Email marketing send frequency for 750+ e-commerce brands
Counts of marketing emails
Send dates
Recent subject lines

🚀 Use Cases

Review patterns in marketing email volume
Compare send timing across brands
Inspect recent subject line text for messaging updates

⚡ Developer Benefits

Structured retrieval of email counts and send dates
Developer access to recent subject line data for analysis

⚠️ Limitations

Available details are limited to counts, send dates, and recent subject lines, as described in the provided server data.

Topics

competitive-intelligenceecommerceemail-marketingmcpmcp-servermodel-context-protocolnordics

Captured live from the server via tools/list.

get_brand_email_frequency

How many marketing emails a brand sent in a calendar period, and when, as observed by StackEnhance Signal (ecommerce brands, mostly in Sweden, Norway, Denmark, Finland and Germany). Use for questions like "How many emails did Newport send in August 2026?", "What did Newport send last week?" or "What has X sent recently?". Without a market, a brand tracked in several countries gets one result per market. Resolve relative dates yourself to YYYY-MM-DD: "last week" is the previous Monday–Sunday, "last month" the previous calendar month, "recently" the last 14 days. Dates are the brand's local calendar dates and a period may span up to two years. Returns the count; for periods of up to 31 days also the date of each send; and at most two subject lines, only ones already shown on the brand's public StackEnhance page and sent in the period. Every listed send was captured in full; a send without a quoted subject is listed in sends_with_subject_in_signal because its subject is withheld by that limit, not missing. Counts are de-duplicated marketing sends (welcome, birthday and transactional emails excluded). There is no open, click or revenue data. Full campaigns, other subject lines, offers, products and creative analysis are not available through this tool. Cite each result's details_url as the source and as where the full campaigns are.

Parameters4

brand	string	required	Brand name as the user wrote it, e.g. "Newport" or "IKEA". A domain such as newport.se also works.
market	string	optional	Country of one storefront as a two-letter code (SE, NO, DK, FI, DE) or its name ("Sweden"). Omit it to get every market the brand is tracked in.
from	string	required	First day of the period, YYYY-MM-DD.
to	string	required	Last day of the period, inclusive, YYYY-MM-DD.

Raw schema

{
  "type": "object",
  "properties": {
    "brand": {
      "type": "string",
      "minLength": 2,
      "maxLength": 80,
      "description": "Brand name as the user wrote it, e.g. \"Newport\" or \"IKEA\". A domain such as newport.se also works."
    },
    "market": {
      "type": "string",
      "maxLength": 32,
      "description": "Country of one storefront as a two-letter code (SE, NO, DK, FI, DE) or its name (\"Sweden\"). Omit it to get every market the brand is tracked in."
    },
    "from": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "First day of the period, YYYY-MM-DD."
    },
    "to": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Last day of the period, inclusive, YYYY-MM-DD."
    }
  },
  "required": [
    "brand",
    "from",
    "to"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

get_brand_summary

A brand's email-marketing profile as observed by StackEnhance Signal: market, category, the date Signal first observed it, total marketing emails observed, current frequency (average emails per week over the last 90 days) and the date of the latest observed campaign. Use for questions like "How often does Newport email customers?" or "Is IKEA still sending newsletters?". Without a market, a brand tracked in several countries gets one summary per market. Returns aggregates only — no campaign list, subject lines, offers or creative analysis. Cite each result's details_url as the source.

Parameters2

brand	string	required	Brand name as the user wrote it, e.g. "Newport" or "IKEA". A domain such as newport.se also works.
market	string	optional	Country of one storefront as a two-letter code (SE, NO, DK, FI, DE) or its name ("Sweden"). Omit it to get every market the brand is tracked in.

Raw schema

{
  "type": "object",
  "properties": {
    "brand": {
      "type": "string",
      "minLength": 2,
      "maxLength": 80,
      "description": "Brand name as the user wrote it, e.g. \"Newport\" or \"IKEA\". A domain such as newport.se also works."
    },
    "market": {
      "type": "string",
      "maxLength": 32,
      "description": "Country of one storefront as a two-letter code (SE, NO, DK, FI, DE) or its name (\"Sweden\"). Omit it to get every market the brand is tracked in."
    }
  },
  "required": [
    "brand"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

find_brands

Ecommerce brands StackEnhance Signal tracks in one market, ranked by current email frequency (average marketing emails per week over the last 90 days), optionally within a category such as "Fashion & Apparel" or "Home & Interior". Use for questions like "Which brands email most frequently in Swedish ecommerce?" or to find a brand when the user names a kind of brand ("a Swedish fashion brand"). Rankings are available for SE, NO, DK, FI and DE. Brands with too little observed data are left out of rankings. Returns brand names, categories and emails per week only. Each brand has a details_url to cite.

Parameters3

market	string	required	Country as a two-letter code (SE, NO, DK, FI or DE) or its name ("Sweden").
category	string	optional	Optional category, e.g. "Fashion & Apparel", "Home & Interior", "Beauty & Cosmetics", "Sports & Outdoor".
limit	integer	optional	How many brands to return (1-10, default 10).

Raw schema

{
  "type": "object",
  "properties": {
    "market": {
      "type": "string",
      "minLength": 2,
      "maxLength": 32,
      "description": "Country as a two-letter code (SE, NO, DK, FI or DE) or its name (\"Sweden\")."
    },
    "category": {
      "type": "string",
      "maxLength": 60,
      "description": "Optional category, e.g. \"Fashion & Apparel\", \"Home & Interior\", \"Beauty & Cosmetics\", \"Sports & Outdoor\"."
    },
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10,
      "description": "How many brands to return (1-10, default 10)."
    }
  },
  "required": [
    "market"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

README.md7 KBView on GitHub

Signal by StackEnhance — MCP server

Marketing-email intelligence for e-commerce brands in the Nordics and Germany, inside your AI assistant.

Signal by StackEnhance is a free, read-only Model Context Protocol server. It lets Claude, ChatGPT, Cursor and other MCP clients answer questions about how often online stores send marketing email, and when, from the archive behind StackEnhance Signal.

code

https://mcp.stackenhance.com/mcp

Streamable HTTP · no API key · no sign-in · read-only · free

What you can ask

How often does Boozt email its customers in Sweden?
What did Newport send last week?
How many emails did IKEA send in August?
Which home and interior brands in Denmark email most often?
Is Gina Tricot still sending newsletters?

Every answer links to the brand's public page on stackenhance.com as its source.

The data


Brands	750+ online stores, mostly in Sweden, Norway, Denmark, Finland and Germany
Emails	75,000+ marketing emails captured
What counts	De-duplicated campaign sends. Welcome, birthday and transactional emails are excluded.
Frequency	Average marketing emails per week over the last 90 days
Dates	The brand's local calendar date
Not available	Open, click or revenue data (Signal has none), full campaigns, offers, products and creative analysis

For a period of up to 31 days the server lists the date of each send. It may quote up to two subject lines, and only ones already shown on the brand's public page.

Tools

Tool	Answers	Inputs
`get_brand_summary`	A brand's profile: market, category, first observed, total emails, current emails per week, latest campaign date	`brand`, optional `market`
`get_brand_email_frequency`	How many marketing emails a brand sent in a period, and on which days (periods up to 31 days)	`brand`, `from`, `to` (YYYY-MM-DD, up to two years), optional `market`
`find_brands`	Brands in one market ranked by current email frequency, optionally within a category	`market` (SE, NO, DK, FI, DE), optional `category`, `limit` (1–10)

All three are read-only and idempotent. A brand can be given by name (Newport) or domain (newport.se). Without a market, a brand sold in several countries returns one result per market.

Setup

Claude (web, desktop and mobile)

Open Signal by StackEnhance in Claude's directory and click Connect.

Or add it by hand: Settings → Connectors → Add custom connector, name it Signal by StackEnhance, paste the server URL and leave the OAuth fields empty.

ChatGPT

Open Settings → Apps & Connectors → Advanced and turn on Developer mode.
Choose Create.
Name: Signal by StackEnhance. URL: https://mcp.stackenhance.com/mcp. Authentication: None.
Start a new chat and turn the connector on from the + menu.

Claude Code

bash

claude mcp add --transport http signal-by-stackenhance https://mcp.stackenhance.com/mcp

Cursor

~/.cursor/mcp.json, or .cursor/mcp.json in a project:

json

{
  "mcpServers": {
    "signal-by-stackenhance": {
      "url": "https://mcp.stackenhance.com/mcp"
    }
  }
}

VS Code

.vscode/mcp.json:

json

{
  "servers": {
    "signal-by-stackenhance": {
      "type": "http",
      "url": "https://mcp.stackenhance.com/mcp"
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json:

json

{
  "mcpServers": {
    "signal-by-stackenhance": {
      "serverUrl": "https://mcp.stackenhance.com/mcp"
    }
  }
}

Clients that only run local (stdio) servers

Bridge to the remote server with mcp-remote:

json

{
  "mcpServers": {
    "signal-by-stackenhance": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.stackenhance.com/mcp"]
    }
  }
}

Privacy

When an assistant uses the server, StackEnhance receives only the tool request (the brand, market, category, date range or number of results asked about) and technical request data, such as the IP address of the system that connects. When ChatGPT or Claude call the server from their own infrastructure, that is normally the AI provider's address, not yours. The server never receives your conversation or your identity, and nothing it receives is linked to an account. Full details: privacy policy, section 13.

Limits

Use is free and subject to a fair-use rate limit per IP address. Answers are aggregates of what Signal observed; a brand Signal does not track, or tracks with too little data, is reported as not available rather than guessed.

Support

Help: Ask Signal questions in ChatGPT and Claude
Email: support@stackenhance.com
Privacy policy · Terms of service

Development

bash

npm install
npm run dev     # http://localhost:3333/mcp, against the production facts API
npm test

SIGNAL_API_URL points the server at another facts API; SIGNAL_MCP_KEY is an optional key that gives a deployment its own rate-limit tier. The server has no database access: its only data source is the public Signal facts API.

Built by Stack Enhance AB, Sweden.

Install

Tools (3)

get_brand_email_frequencyget_brand_summaryfind_brands

Remote endpoint

Streamable HTTP

Hosted server - connect over the network, no local install.

url

https://mcp.stackenhance.com/mcp

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "signal": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://mcp.stackenhance.com/mcp"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.

com.stackenhance/signal MCP Server

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

get_brand_email_frequency

get_brand_summary

find_brands

Signal by StackEnhance — MCP server

What you can ask

The data

Tools

Setup

Claude (web, desktop and mobile)

ChatGPT

Claude Code

Cursor

VS Code

Windsurf

Clients that only run local (stdio) servers

Privacy

Limits

Support

Development

Install

Remote endpoint

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