# REGON (Polish business register) (pypi · regon-mcp)

Look up Polish businesses in the GUS REGON register (BIR1) by NIP, REGON, or KRS.

- Trust score: 68/100 (medium)
- Change this week: +20
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-19

## Components

- pypi · `regon-mcp`: 68/100 (this document), [markdown](https://verifymcp.io/servers/smartmobilehouse-regon-mcp/regon-mcp.md), [page](https://verifymcp.io/servers/smartmobilehouse-regon-mcp/regon-mcp)

## Channel facts

- Registry: `pypi`
- Package: `regon-mcp`
- Version: `0.2.2`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-19.

- **Supply Chain Security**: 99/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised native-build step with no shell scripting around it.
  - 3 of 34 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 32/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 8 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 78/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 507 tokens (~84/item across 6 items; 6 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 30/100
  - Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### Claude

```bash
claude mcp add smartmobilehouse-regon-mcp -- uvx regon-mcp
```

### Codex

```bash
codex mcp add smartmobilehouse-regon-mcp -- uvx regon-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "smartmobilehouse-regon-mcp": {
      "type": "local",
      "command": [
        "uvx",
        "regon-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add smartmobilehouse-regon-mcp --command uvx --arg regon-mcp
```

### Hermes

```yaml
mcp_servers:
  smartmobilehouse-regon-mcp:
    command: "uvx"
    args: ["regon-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "smartmobilehouse-regon-mcp": {
      "command": "uvx",
      "args": [
        "regon-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-19 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-18 (score 67, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-08-13 (score 63, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-08-12 (score 48, −15)

- [security regression] Malware scan: pass → unverified
- [functional regression] Security disclosure: unverified → fail

### 2026-08-11 (score 63, +2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-08-10 (score 61)

First indexed and scored.

## MCP tools (6)

### `search_by_nip` (~63 tokens)

Look up a Polish business entity by NIP (10-digit tax id).

Returns basic registry data (name, REGON, address, entity type). Use the
returned REGON with get_full_report() for the detailed record.

Input parameters:

- `nip` (string, required)

### `search_by_regon` (~37 tokens)

Look up a Polish business entity by REGON (9- or 14-digit statistical id).

Input parameters:

- `regon` (string, required)

### `search_by_krs` (~34 tokens)

Look up a Polish business entity by KRS (10-digit court-register number).

Input parameters:

- `krs` (string, required)

### `search_bulk` (~116 tokens)

Look up up to 20 entities of the same identifier type in one call.

id_type must be one of: "nip", "krs", "regon9", "regon14".

The response adds `requested` (normalized inputs) and `unmatched` (requested
ids with no returned row) so partial results are explicit. For KRS the
service does not echo the KRS in search rows, so `unmatched` is null there.

Input parameters:

- `id_type` (string, required)
- `identifiers` (array, required)

### `get_full_report` (~65 tokens)

Fetch a detailed REGON report for one entity by REGON.

Choose report_type from list_report_types(), based on the entity's `type`
and `silo_id` returned by a search.

Input parameters:

- `regon` (string, required)
- `report_type` (string, required)

### `list_report_types` (~192 tokens)

List valid report_type values for get_full_report(), with guidance.

These are the BIR1.1 report names. Picking the right report:
  \- type "P" (legal person)   -> BIR11OsPrawna
  \- type "F" (natural person) -> by silo_id:
      1 -> BIR11OsFizycznaDzialalnoscCeidg
      2 -> BIR11OsFizycznaDzialalnoscRolnicza
      3 -> BIR11OsFizycznaDzialalnoscPozostala
      4 -> BIR11OsFizycznaDzialalnoscSkreslonaDo20141108
  \- local units (LP / LF) -> BIR11JednLokalnaOsPrawnej / ...OsFizycznej

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/smartmobilehouse-regon-mcp/regon-mcp#diagnostics

## Score history

- 2026-08-19: 68
- 2026-08-18: 67
- 2026-08-17: 63
- 2026-08-16: 63
- 2026-08-15: 63
- 2026-08-14: 63
- 2026-08-13: 63
- 2026-08-12: 48
- 2026-08-11: 63
- 2026-08-10: 61

## Links

- PyPI project: https://pypi.org/project/regon-mcp/
- Socket report: https://socket.dev/pypi/package/regon-mcp
- Repository: https://github.com/SmartMobileHouse/regon-mcp
- Changelog RSS feed: https://verifymcp.io/servers/smartmobilehouse-regon-mcp/regon-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/smartmobilehouse-regon-mcp/regon-mcp.json
- HTML version of this page: https://verifymcp.io/servers/smartmobilehouse-regon-mcp/regon-mcp