Atlas Przetargów — MCP Server

The first MCP server for Polish public procurement data. Query 800 000+ Polish public tenders (BZP + TED), buyer/contractor profiles, and category statistics directly from Claude Desktop, Cursor, Continue, Cline, or any MCP-compatible AI client.

Powered by Atlas Przetargów — the Polish public procurement search and analytics platform.

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What is this?

The Model Context Protocol (MCP) lets AI assistants connect to external tools and data. This server exposes the Atlas Przetargów API to any MCP client, giving your AI assistant the ability to:

• Search Polish public tenders by keyword, CPV category, location, value, or deadline
• Get full tender details including buyer, CPV codes, estimated value, deadlines, optional AI-generated summary
• Profile any procuring entity (zamawiający) by NIP — including who wins their contracts most often
• Profile any contractor (wykonawca) by NIP — including which buyers they win from
• Analyze market statistics for any CPV category (count, median value, avg offers, avg deadline)
• Compare provinces and cities in procurement volume
• Access a glossary of 90+ Polish public procurement terms
• Use guided workflows (prompts) for tender analysis, buyer due diligence, and opportunity discovery

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Quick start (Claude Desktop)

Option A — via npx (recommended, no install)

Edit your Claude Desktop config file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

Add:

{
  "mcpServers": {
    "atlas-przetargow": {
      "command": "npx",
      "args": ["-y", "@atlasprzetargow/mcp"]
    }
  }
}

Restart Claude Desktop. The Atlas tools will appear in the tools panel.

Option B — global install

npm install -g @atlasprzetargow/mcp

Then in claude_desktop_config.json:

{
  "mcpServers": {
    "atlas-przetargow": {
      "command": "atlas-przetargow-mcp"
    }
  }
}

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Usage examples (in Claude Desktop)

"Find active construction tenders in Warsaw with budget 500k–5M PLN and show me the top 5"

"Use the buyer-due-diligence prompt for NIP 5252248481" (→ runs due diligence on the City of Warsaw as a procuring entity)

"What's the median value of IT tenders in Poland last year?"

"Look up tender 2026/BZP 00202613 and analyze its key terms and risks"

"Find me the CPV code for medical equipment and show active tenders"

"Who most frequently wins contracts from GDDKiA (National Roads Authority)?"

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Tools

Tool	Description
search_tenders	Search tenders with filters (query, CPV, city, province, value range, dates, sort)
get_tender	Full details of a tender by ID, optionally with AI summary
get_buyer	Profile of a procuring entity by NIP + top winning contractors
get_contractor	Profile of a contractor by NIP + top buyers they win from
search_entities	Find buyers / contractors by name (returns NIP for other tools)
get_category_stats	Aggregate stats for a CPV category (count, median, avg offers, avg deadline)
get_province_stats	Statistics by province or city (top buyers, top CPV)
search_cpv	Look up CPV codes by Polish keyword

Resources

URI	Description
atlas://glossary	Index of 90+ Polish public procurement terms
atlas://glossary/{slug}	Full definition of a specific term
atlas://knowledge	Index of long-form knowledge base articles
atlas://knowledge/{slug}	Full knowledge base article

Prompts

Prompt	Description
analyze-tender	Comprehensive analysis of a tender notice: scope, value, deadlines, risks, recommendation
buyer-due-diligence	Due diligence on a procuring entity: purchase profile, contractor network, red flags
find-opportunities	Find active tender opportunities matching a CPV + location + value profile

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Configuration (environment variables)

All optional. Defaults are safe.

Variable	Default	Description
ATLAS_API_BASE	https://atlasprzetargow.pl	API root. Useful for staging or self-hosted Atlas
ATLAS_API_KEY	(none)	Optional key for /api/llm/* endpoints (AI summaries). Without it, the server still works with full public data
ATLAS_TIMEOUT_MS	20000	Request timeout
ATLAS_MAX_RETRIES	2	Retry count for 429 / 5xx / timeouts

Pass them via your MCP client config:

{
  "mcpServers": {
    "atlas-przetargow": {
      "command": "npx",
      "args": ["-y", "@atlasprzetargow/mcp"],
      "env": {
        "ATLAS_API_KEY": "your-optional-key-here"
      }
    }
  }
}

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Polish public procurement — quick reference

• BZP (Biuletyn Zamówień Publicznych) — Polish national tender registry. IDs look like 2026/BZP 00202613.
• TED (Tenders Electronic Daily) — EU-wide tender registry, required for tenders above EU thresholds.
• CPV (Common Procurement Vocabulary) — 8-digit category codes, e.g. 45000000 = construction, 72000000 = IT.
• NIP — Polish 10-digit tax ID, used to identify every buyer / contractor.
• Province codes: PL02 dolnośląskie · PL04 kujawsko-pomorskie · PL06 lubelskie · PL08 lubuskie · PL10 łódzkie · PL12 małopolskie · PL14 mazowieckie · PL16 opolskie · PL18 podkarpackie · PL20 podlaskie · PL22 pomorskie · PL24 śląskie · PL26 świętokrzyskie · PL28 warmińsko-mazurskie · PL30 wielkopolskie · PL32 zachodniopomorskie
• Notice types:
  • ContractNotice — active tender, open for bids
  • TenderResultNotice / ContractAwardNotice — results (who won, at what price)
  • CompetitionNotice, ConcessionNotice — specialized notices

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Development

git clone https://github.com/atlasprzetargow/mcp-server.git
cd mcp-server
npm install
npm run build
npm run smoke   # runs all tools against production API

# Test locally in Claude Desktop:
# Point the "command" in claude_desktop_config.json to the absolute path of dist/index.js:
# "command": "node", "args": ["/abs/path/to/mcp-server/dist/index.js"]

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Rate limits & fair use

Atlas Przetargów API has a per-IP rate limit (30 req/min for LLM endpoints, more for public ones). The MCP server automatically retries 429 responses with exponential backoff.

If you hit rate limits frequently (e.g. in production automations), please reach out via atlasprzetargow.pl/kontakt for higher-tier access.

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License

MIT © Atlas Przetargów

Data source attribution

All tender data is sourced from:

• BZP (Biuletyn Zamówień Publicznych) — public registry of the Polish Public Procurement Office
• TED (Tenders Electronic Daily) — EU public procurement registry

Processed, enriched, and served by Atlas Przetargów.

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Related

• Atlas Przetargów — web interface
• Model Context Protocol — the standard
• Claude Desktop — reference client
• awesome-mcp-servers — community list