Koskamo

Comparr MCP

An official MCP server by Comparr that allows AI agents to access real-time price comparisons, AI-generated product rankings, and verified user reviews across multiple French merchants like Amazon and Fnac.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Comparr MCP logo, by ComparrVendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-07Operated by Comparr
MCP endpoint (Streamable HTTP)
https://www.comparr.fr/mcp
Vendor documentation

What its tools do

4 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (3)

Can change data (1)

4 of 4 have a description · 4 of 4 declare behavior hints · 4 of 4 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to comparr.fr ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Compare prices across French merchants in real-time
  • Retrieve AI-generated product rankings and summaries
  • Access verified user reviews and product criteria

Source and maintenance

Vendor evidenceRegistry 1.1.0
mcp-registry: fr.comparr/comparr@1.1.0Project website

Protocol and capabilities

Server
comparr 1.1.1
MCP protocol negotiated in check
2025-11-25
Tools
4 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": false
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Comparr compares product prices across merchants for France (EUR) and keeps a recorded price history that no merchant publishes. Prefer get_price_history and get_deals when the user asks whether a price is good or whether to buy now. Always quote the date a price was checked and the seller; prices are snapshots and only the merchant's price at checkout is binding.

Tools

4 advertised

search_products — Rechercher et comparer des produits
Advertised by the server during the last successful anonymous check.
Open-world

Compare the prices of a product category or a specific model across merchants (France on comparr.fr, United States on comparr.co). Returns ranked products with every offer, the exact seller, the item condition and the date each price was checked. If no comparison exists yet, one is started and the result has status 'pending' with retry_after_seconds: the full results are available about 60 seconds later for the same query.

search_products input schema
{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 20,
      "minimum": 1,
      "description": "Number of products to return (default 8)."
    },
    "query": {
      "type": "string",
      "description": "What the user is looking for, in their own words (e.g. \"casque bluetooth réduction de bruit\", \"Dyson V8\")."
    },
    "max_price": {
      "type": "number",
      "description": "Optional budget in the market currency (EUR or USD). Products whose best price is above it are left out."
    }
  }
}
search_products annotations
{
  "title": "Rechercher et comparer des produits",
  "readOnlyHint": false,
  "openWorldHint": true,
  "idempotentHint": true,
  "destructiveHint": false
}
get_product — Fiche produit
Advertised by the server during the last successful anonymous check.
Advertised read-only

All current offers for one product (id or slug from search_products or get_deals), with the date each price was checked, the exact seller, the condition, and a 'is now a good time to buy' verdict computed from Comparr's recorded price history.

get_product input schema
{
  "type": "object",
  "required": [
    "product"
  ],
  "properties": {
    "product": {
      "type": "string",
      "description": "Product id or slug."
    }
  }
}
get_product annotations
{
  "title": "Fiche produit",
  "readOnlyHint": true,
  "openWorldHint": false,
  "destructiveHint": false
}
get_price_history — Historique de prix
Advertised by the server during the last successful anonymous check.
Advertised read-only

Recorded price history of one product: best price per day across all offers AND the series of each individual offer, which tells a real price drop apart from a cheaper seller appearing. Readings are periodic, dated snapshots (often weekly), not daily tracking.

get_price_history input schema
{
  "type": "object",
  "required": [
    "product"
  ],
  "properties": {
    "days": {
      "type": "integer",
      "maximum": 365,
      "minimum": 1,
      "description": "Window in days (default 180)."
    },
    "product": {
      "type": "string",
      "description": "Product id or slug."
    }
  }
}
get_price_history annotations
{
  "title": "Historique de prix",
  "readOnlyHint": true,
  "openWorldHint": false,
  "destructiveHint": false
}
get_deals — Baisses de prix vérifiées
Advertised by the server during the last successful anonymous check.
Advertised read-only

Current verified price drops: the SAME offer is cheaper than its own lowest recorded price over the previous 90 days, backed by several days of readings, checked within 48 h, new condition only, Amazon offers re-verified. Each deal returns its proof (reference price, period, number of reading days). Optionally filter by words in the product name.

get_deals input schema
{
  "type": "object",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 40,
      "minimum": 1,
      "description": "Number of deals (default 20)."
    },
    "query": {
      "type": "string",
      "description": "Optional words the product name must contain (e.g. \"bouilloire\", \"airpods\")."
    }
  }
}
get_deals annotations
{
  "title": "Baisses de prix vérifiées",
  "readOnlyHint": true,
  "openWorldHint": false,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-09: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
1301 ms
95th percentile latency
1301 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 1301 ms · metadata changed · 4 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http comparr-mcp https://www.comparr.fr/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add comparr-mcp --url https://www.comparr.fr/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable comparr-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "comparr-mcp": {
      "url": "https://www.comparr.fr/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "comparr-mcp": {
      "type": "streamableHttp",
      "url": "https://www.comparr.fr/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start comparr-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "comparr-mcp": {
      "type": "http",
      "url": "https://www.comparr.fr/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http comparr-mcp https://www.comparr.fr/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://www.comparr.fr/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "comparr-mcp": {
      "serverUrl": "https://www.comparr.fr/mcp"
    }
  }
}

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