# obrotomierz open data (remote · obrotomierz.pl)

Polish savings bonds, retail bonds in 195 countries, EU bank account bonuses. Open data, CC BY 4.0.

- Trust score: 73/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `obrotomierz.pl`: 73/100 (this document), [markdown](https://verifymcp.io/servers/pl-obrotomierz-open-data/obrotomierz.md), [page](https://verifymcp.io/servers/pl-obrotomierz-open-data/obrotomierz)

## Channel facts

- Endpoint: `https://obrotomierz.pl/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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 2026-11-05.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 487 tokens (~121/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the obrotomierz open data MCP server?

obrotomierz open data is a hosted endpoint at https://obrotomierz.pl/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http pl-obrotomierz-open-data 'https://obrotomierz.pl/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "pl-obrotomierz-open-data": {
      "url": "https://obrotomierz.pl/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pl-obrotomierz-open-data": {
      "type": "http",
      "url": "https://obrotomierz.pl/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.pl-obrotomierz-open-data]
url = "https://obrotomierz.pl/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pl-obrotomierz-open-data": {
      "type": "remote",
      "url": "https://obrotomierz.pl/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pl-obrotomierz-open-data --url 'https://obrotomierz.pl/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  pl-obrotomierz-open-data:
    url: "https://obrotomierz.pl/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "pl-obrotomierz-open-data": {
      "Transport": "http",
      "Url": "https://obrotomierz.pl/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add pl-obrotomierz-open-data -t streamable-http -u 'https://obrotomierz.pl/mcp'
```

### Other

```json
{
  "mcpServers": {
    "pl-obrotomierz-open-data": {
      "type": "http",
      "url": "https://obrotomierz.pl/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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.

### 2026-11-05 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 72, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-11-02 (score 71)

First indexed and scored.

## MCP tools (4)

### `get_polish_savings_bonds_offer` (~90 tokens)

Polish savings bonds on sale now

Polish retail treasury savings bonds (obligacje oszczędnościowe Skarbu Państwa: OTS, ROR, DOR, TOS, COI, EDO, ROS, ROD) currently on sale: series code, term, first-period interest rate, inflation margin and early redemption fee, from the official issue letters of the Polish Ministry of Finance.

### `get_polish_savings_bond_series` (~75 tokens)

One Polish savings bond series

Details of one Polish retail treasury savings bond series by its code (for example EDO1136 or COI1130): terms, margin, early redemption fee and the interest rate in every interest period that has started.

Input parameters:

- `series` (string, required): Series code, e.g. EDO1136

### `get_retail_government_bonds_by_country` (~120 tokens)

Retail government bonds by country

Whether a country sells government bonds to individuals at issue and how they pay (inflation plus a fixed margin, market real rate, fixed, floating, step-up or prize), for all 195 countries, with the official source for each. Without a country: the number of countries in each category and the countries paying inflation plus a fixed margin.

Input parameters:

- `country` (string): Country name in English or Polish, or ISO 3166-1 alpha-2 code, e.g. "Hungary" or "HU"

### `get_eu_bank_account_opening_bonuses` (~111 tokens)

Bank account opening bonuses in the EU

Banks in the 27 EU countries that pay a cash bonus for opening a personal current account, read one by one from bank websites, with the amount, deadline and source page. With a country code: every bank paying a bonus there. Without it: the number of banks with a bonus in each country.

Input parameters:

- `country` (string): ISO 3166-1 alpha-2 code of an EU country, e.g. "PL", "ES", "HU"

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/pl-obrotomierz-open-data/obrotomierz#diagnostics

## Score history

- 2026-11-05: 73
- 2026-11-04: 72
- 2026-11-03: 72
- 2026-11-02: 71

## Common questions

### What is the obrotomierz open data MCP server?

obrotomierz open data is an MCP server listed in the public MCP registry as pl.obrotomierz/open-data. Polish savings bonds, retail bonds in 195 countries, EU bank account bonuses. Open data, CC BY 4.0. This page covers its hosted endpoint (https://obrotomierz.pl/mcp).

### Is the obrotomierz open data MCP server safe to use?

obrotomierz open data scores 73 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the obrotomierz open data MCP server expose?

obrotomierz open data exposes 4 tools: get_polish_savings_bonds_offer, get_polish_savings_bond_series, get_retail_government_bonds_by_country, get_eu_bank_account_opening_bonuses. Their descriptions and schemas cost roughly 396 tokens of context every time the server is loaded.

### Does the obrotomierz open data MCP server require authentication?

No. We connected to obrotomierz open data without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the obrotomierz open data MCP server still maintained?

obrotomierz open data is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://obrotomierz.pl/mcp
- Website: https://obrotomierz.pl/en/data/api/
- Changelog RSS feed: https://verifymcp.io/servers/pl-obrotomierz-open-data/obrotomierz.xml
- Changelog JSON feed: https://verifymcp.io/servers/pl-obrotomierz-open-data/obrotomierz.json
- HTML version of this page: https://verifymcp.io/servers/pl-obrotomierz-open-data/obrotomierz