# EvidujZdarma – EET 2.0 (Czech sales registration) (remote · evidujzdarma.cz)

Czech EET 2.0 from 1 Jan 2027: check an IČO, classify payments, EET OFF cost, cited facts.

- Trust score: 76/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-24

## Components

- remote · `evidujzdarma.cz`: 76/100 (this document), [markdown](https://verifymcp.io/servers/cz-evidujzdarma-eet/api-mcp.md), [page](https://verifymcp.io/servers/cz-evidujzdarma-eet/api-mcp)

## Channel facts

- Endpoint: `https://evidujzdarma.cz/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-10-24.

- **Endpoint Security**: 83/100
  - 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.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 59/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 2484 tokens (~310/item across 8 items; 8 tools + 0 resources), over budget; trim descriptions and params.
  - 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**: 98/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 93% 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 8 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 9 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 EvidujZdarma – EET 2.0 (Czech sales registration) MCP server?

EvidujZdarma – EET 2.0 (Czech sales registration) is a hosted endpoint at https://evidujzdarma.cz/api/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 cz-evidujzdarma-eet 'https://evidujzdarma.cz/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "cz-evidujzdarma-eet": {
      "url": "https://evidujzdarma.cz/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "cz-evidujzdarma-eet": {
      "type": "http",
      "url": "https://evidujzdarma.cz/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.cz-evidujzdarma-eet]
url = "https://evidujzdarma.cz/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cz-evidujzdarma-eet": {
      "type": "remote",
      "url": "https://evidujzdarma.cz/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add cz-evidujzdarma-eet --url 'https://evidujzdarma.cz/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  cz-evidujzdarma-eet:
    url: "https://evidujzdarma.cz/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "cz-evidujzdarma-eet": {
      "Transport": "http",
      "Url": "https://evidujzdarma.cz/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add cz-evidujzdarma-eet -t streamable-http -u 'https://evidujzdarma.cz/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "cz-evidujzdarma-eet": {
      "type": "http",
      "url": "https://evidujzdarma.cz/api/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.

### 2026-10-24 (score 76, +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.

### 2026-10-22 (score 75, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-20 (score 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-18 (score 73, 0)

- [security] Tool “eet_check_ico” rewrote its description, which is the text the model reads
- [functional] Schema quality: good → excellent

### 2026-10-17 (score 73, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-16 (score 72, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-15 (score 72)

First indexed and scored.

## MCP tools (8)

### `eet_check_ico` (~507 tokens)

Check whether EET 2.0 applies to a company (by IČO)

Look up a Czech business by IČO in the public ARES register and estimate whether EET 2.0 (mandatory sales registration from 1 Jan 2027) applies, whether EET OFF is available, and what to do next (personal checklist with dates).

The estimate uses legal form, CZ-NACE activities and trade licences (RŽP) from ARES. ARES does not show whether the business accepts payments in person or uses the flat-rate tax, so pass the optional answers when you know them — they override the heuristics.

Args:
  \- ico (string): 8-digit Czech company ID, spaces allowed, e.g. "27082440".
  \- accepts_in_person_payments ('yes'|'no'|'unknown'): cash/card/QR accepted in person or at premises?
  \- flat_tax_band ('band1'|'band2'|'band3'|'no'|'unknown'): paušální daň band, 'no' = not in the flat-rate regime.
  \- income_under_1m ('yes'|'no'|'unknown'): yearly self-employment income up to 1,000,000 CZK?
  \- response_format ('markdown'|'json').

Returns: subject (name, legal form, VAT payer, municipality), verdict ('likely'|'possible'|'unlikely'|'dissolved'), headline, eet_off ('possible'|'not_available'|'check') with explanation, reasons, checklist [{date, title, text, url}], url of the full check on the website, catalog_url of the subject's page in the company catalogue (basic registry data, billing details, EET estimate).

Don't use for: payment-type questions (use eet_classify_payment) or the EET OFF cost comparison (use eet_calculate_eet_off).

Input parameters:

- `accepts_in_person_payments` (string): Does the business accept payments in person (cash, card, QR at the premises)?
- `flat_tax_band` (string): Flat-rate tax (paušální daň) band, or 'no'.
- `ico` (string, required): Czech IČO (8 digits), e.g. "27082440"
- `income_under_1m` (string): Yearly self-employment income up to 1,000,000 CZK?
- `response_format` (string): Output format: 'markdown' (human-readable, default) or 'json' (machine-readable).

### `eet_calculate_eet_off` (~514 tokens)

Calculate whether EET OFF pays off

Compare the EET OFF surcharge (1 400 Kč/month added to the flat-rate tax instead of registering sales) with the real cost of registering sales (time × hourly rate + POS cost + hardware spread over 3 years). Handles businesses that start mid-year (surcharge only from the start month).

EET OFF is only for natural persons in band 1 of the flat-rate tax with income up to 1,000,000 CZK; for others the tool returns eligible=false with the reason.

Args:
  \- flat_tax_band (1|2|3|0): 0 = not in the flat-rate regime.
  \- yearly_income_czk (number): self-employment income per year in CZK.
  \- start_month (1-12, default 1): month the business starts in 2027; 1 = whole year.
  \- minutes_per_day (default 5), work_days_per_month (default 21), hourly_rate_czk (default 300), pos_cost_monthly_czk (default 0 – the EvidujZdarma POS is free), hardware_one_off_czk (default 0).
  \- response_format ('markdown'|'json').

Returns: eligible, reason (if not), verdict ('eet-off'|'evidence'|'tie'), surcharge_czk, evidence_cost_czk, difference_czk (positive = evidence costs more), months, flat_tax_monthly_2027_czk, rules (deadline, binding year, exceeding 1M, exit).

Input parameters:

- `flat_tax_band` (required): Flat-rate tax band 1–3, or 0 if not in the regime
- `hardware_one_off_czk` (number): One-off hardware cost in CZK (spread over 3 years)
- `hourly_rate_czk` (number): Value of one hour of your time in CZK
- `minutes_per_day` (number): Minutes per working day spent on sales registration
- `pos_cost_monthly_czk` (number): Monthly POS/app cost in CZK (EvidujZdarma = 0)
- `response_format` (string): Output format: 'markdown' (human-readable, default) or 'json' (machine-readable).
- `start_month` (integer): Month of starting the business in 2027 (1 = whole year)
- `work_days_per_month` (number)
- `yearly_income_czk` (number, required): Yearly self-employment income in CZK

### `eet_classify_payment` (~325 tokens)

Is this payment registered in EET 2.0?

Decide whether a payment is an evidenced sale ("kontaktní platba") under EET 2.0. Payments accepted in person or at the premises (cash, card, QR scanned on site, meal vouchers of another company, prepaid credit drawdown, deposits, virtual assets, cheques) are evidenced; redeeming a gift voucher for specific goods or a service is not a payment and is not evidenced (its sale was); remote payments (bank transfer for an invoice, e-shop payment gateway, QR on an invoice/website) are not.

Args:
  \- payment ('cash'|'card'|'qr_code'|'meal_voucher'|'credit'|'gift_voucher'|'deposit'|'voucher'|'virtual_assets'|'cheque'|'bank_transfer'|'online_gateway'|'cash_on_delivery')
  \- in_person (boolean): was the payment made during personal contact or at the business premises?
  \- response_format ('markdown'|'json').

Returns: evidenced ('yes'|'no'|'uncertain'), explanation, note, sources, guide url. 'uncertain' marks cases that need confirmation by a tax adviser (bank transfer made on site, cash on delivery). Activity-level exemptions are not evaluated here (see eet_get_facts topic 'exemptions').

Input parameters:

- `in_person` (boolean, required): Payment made during personal contact or at the premises
- `payment` (string, required): Payment instrument
- `response_format` (string): Output format: 'markdown' (human-readable, default) or 'json' (machine-readable).

### `eet_get_facts` (~260 tokens)

Get verified facts about EET 2.0

Return short, sourced facts about EET 2.0 on chosen topics (Czech text, each with official/primary sources and the date the facts were verified).

Topics: law, timeline, january_pilot, who_must, exemptions, evidenced_payments, offline, receipt, units, certificate, eet_off, flat_tax, tax_credit, penalties, moje_eet, law_history. Omit 'topics' to get all of them.

Key corrections this tool reflects: January 2027 is NOT a statutory pilot/grace period (evidence is mandatory from 1 Jan 2027); there is NO "occasional sales up to 50,000 CZK" exemption in the adopted law; the tax credit is "up to" 5,000 CZK for self-employed persons only.

Args:
  \- topics (array of topic names, optional)
  \- response_format ('markdown'|'json').

Returns: facts [{topic, title, text, sources[{label,url}]}], facts_updated.

Input parameters:

- `response_format` (string): Output format: 'markdown' (human-readable, default) or 'json' (machine-readable).
- `topics` (array): Topics to return; omit for all

### `eet_list_misconceptions` (~190 tokens)

List common misconceptions about EET 2.0

Return claims about EET 2.0 that circulate in media and on commercial websites but contradict the adopted law or official Finanční správa information — each with what actually applies, a dated "as of", our opinion (clearly labelled) and sources. Use it to fact-check a claim before answering.

Args:
  \- query (string, optional): filter by words, e.g. "leden", "50 000", "POK", "karta".
  \- response_format ('markdown'|'json').

Returns: items [{id, question, claim, truth, comment, as_of, sources, url}], page_url.

Input parameters:

- `query` (string): Optional filter, e.g. "leden" or "POK"
- `response_format` (string): Output format: 'markdown' (human-readable, default) or 'json' (machine-readable).

### `eet_search_guides` (~235 tokens)

Search EET 2.0 guides

Full-text search in the EvidujZdarma guides about EET 2.0 (in Czech): who must register sales, contact payments, units, DIS+ and certificates, EET OFF, penalties, offline operation, receipts, accommodation, hairdressers, craftsmen, selling on behalf of another person, glossary.

Args:
  \- query (string): Czech or English keywords, e.g. "ubytování kauce", "certifikát DIS+", "bez internetu".
  \- limit (1-10, default 5).
  \- response_format ('markdown'|'json').

Returns: results [{slug, title, description, updated, reviewed, url}]. Use eet_get_guide with the slug to read the full text. 'reviewed' = checked by our expert reviewer (see https://evidujzdarma.cz/o-nas#odborna-revize).

Input parameters:

- `limit` (integer)
- `query` (string, required): Search keywords
- `response_format` (string): Output format: 'markdown' (human-readable, default) or 'json' (machine-readable).

### `eet_get_guide` (~141 tokens)

Read an EET 2.0 guide

Return the full text of one EvidujZdarma guide (Czech, Markdown) including FAQ and sources, by slug from eet_search_guides.

Args:
  \- slug (string): a slug returned by eet_search_guides. Only guides that passed expert review are available.
  \- response_format ('markdown'|'json').

Returns: slug, title, url, updated, reviewed, text (truncated at 25,000 characters).

Input parameters:

- `response_format` (string): Output format: 'markdown' (human-readable, default) or 'json' (machine-readable).
- `slug` (string, required): Guide slug from eet_search_guides

### `eet_get_fs_status` (~149 tokens)

Is EET down? Availability of the Finanční správa interface

Return the current availability of the Finanční správa EET 2.0 interface (production trzbyeet.gov.cz and the Playground test environment) as measured every 5 minutes by EvidujZdarma: status ('up'|'slow'|'down'), last check, latency, uptime for 24 h / 7 days / 30 days and recent outages.

It measures reachability of the server, not the processing of individual sales. Official outage notices are published on eet.gov.cz.

Args:
  \- response_format ('markdown'|'json').

Input parameters:

- `response_format` (string): Output format: 'markdown' (human-readable, default) or 'json' (machine-readable).

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/cz-evidujzdarma-eet/api-mcp#diagnostics

## Score history

- 2026-10-24: 76
- 2026-10-23: 75
- 2026-10-22: 75
- 2026-10-21: 74
- 2026-10-20: 74
- 2026-10-19: 73
- 2026-10-18: 73
- 2026-10-17: 73
- 2026-10-16: 72
- 2026-10-15: 72

## Common questions

### What is the EvidujZdarma – EET 2.0 (Czech sales registration) MCP server?

EvidujZdarma – EET 2.0 (Czech sales registration) is an MCP server listed in the public MCP registry as cz.evidujzdarma/eet. Czech EET 2.0 from 1 Jan 2027: check an IČO, classify payments, EET OFF cost, cited facts. This page covers its hosted endpoint (https://evidujzdarma.cz/api/mcp).

### Is the EvidujZdarma – EET 2.0 (Czech sales registration) MCP server safe to use?

EvidujZdarma – EET 2.0 (Czech sales registration) scores 76 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 EvidujZdarma – EET 2.0 (Czech sales registration) MCP server expose?

EvidujZdarma – EET 2.0 (Czech sales registration) exposes 8 tools: eet_check_ico, eet_calculate_eet_off, eet_classify_payment, eet_get_facts, eet_list_misconceptions, and 3 more. Their descriptions and schemas cost roughly 2,321 tokens of context every time the server is loaded.

### Does the EvidujZdarma – EET 2.0 (Czech sales registration) MCP server require authentication?

No. We connected to EvidujZdarma – EET 2.0 (Czech sales registration) without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the EvidujZdarma – EET 2.0 (Czech sales registration) MCP server still maintained?

EvidujZdarma – EET 2.0 (Czech sales registration) is still listed as active in the MCP registry. We last reached this channel on 24 October 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://evidujzdarma.cz/api/mcp
- Website: https://evidujzdarma.cz/mcp
- Changelog RSS feed: https://verifymcp.io/servers/cz-evidujzdarma-eet/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/cz-evidujzdarma-eet/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/cz-evidujzdarma-eet/api-mcp