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.
Available components
Last scanned (4 hours ago)
Scores higher than 71% of remote servers
Reachable. Last reached 24 Oct 2026.
Category Finance and Payments
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. How we score → Why this is hard to score →
Endpoint Security83
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC is configured correctly; the domain's records validate against the full chain to the root. View diagnostics → Pass
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability59
- AI-judged instruction clarity (excellent).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management30
- Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage98
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 93% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 24 Oct 26 +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.
- 22 Oct 26 +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.
- 20 Oct 26 +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.
- 18 Oct 26 0
- Tool “eet_check_ico” rewrote its description, which is the text the model reads security
- Schema quality: good → excellent functional
- 17 Oct 26 +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.
- 16 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 15 Oct 26 72
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 24 Oct 2026 · Probed https://evidujzdarma.cz/api/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=evidujzdarma.cz | CN=YE2,O=Let's Encrypt,C=US | 2 Oct 2026 | 31 Dec 2026 | ECDSA 256 | ECDSA-SHA384 | 60e316d896cf48e7fc4bbb6949d8577b486 |
| SANs: evidujzdarma.cz, www.evidujzdarma.cz | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC secure
Validation of evidujzdarma.cz. — Secure
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| cz. | present | 20237 | 13 | Verified |
| evidujzdarma.cz. | present | 26600 | 13 | Verified |
| evidujzdarma.cz. | Verified address RRset verified with the apex keys |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000; includeSubDomains; preload |
| content-security-policy | default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; font-src 'self' data:; connect-src 'self'; worker-src 'self'; manifest-src 'self'; frame-ancestors 'self'; base-uri 'self'; form-action 'self'; object-src 'none' |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | camera=(self), microphone=(), geolocation=(), usb=(self) |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://evidujzdarma.cz/api/mcp | Verified | 200 | |
| http (plaintext) | http://evidujzdarma.cz/api/mcp | HTTPS enforced | 301 | https://evidujzdarma.cz/api/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
eet_calculate_eet_off Calculate whether EET OFF pays off ~514
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).
| Name | Type | Req | Description |
|---|---|---|---|
| flat_tax_band | – | yes | 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 | yes | Yearly self-employment income in CZK |
No output schema declared.
No examples provided.
eet_check_ico Check whether EET 2.0 applies to a company (by IČO) ~507
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).
| Name | Type | Req | Description |
|---|---|---|---|
| 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 | yes | 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). |
No output schema declared.
No examples provided.
eet_classify_payment Is this payment registered in EET 2.0? ~325
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').
| Name | Type | Req | Description |
|---|---|---|---|
| in_person | boolean | yes | Payment made during personal contact or at the premises |
| payment | string | yes | Payment instrument |
| response_format | string | – | Output format: 'markdown' (human-readable, default) or 'json' (machine-readable). |
No output schema declared.
No examples provided.
eet_get_facts Get verified facts about EET 2.0 ~260
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.
| Name | Type | Req | Description |
|---|---|---|---|
| response_format | string | – | Output format: 'markdown' (human-readable, default) or 'json' (machine-readable). |
| topics | array | – | Topics to return; omit for all |
No output schema declared.
No examples provided.
eet_get_fs_status Is EET down? Availability of the Finanční správa interface ~149
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').
| Name | Type | Req | Description |
|---|---|---|---|
| response_format | string | – | Output format: 'markdown' (human-readable, default) or 'json' (machine-readable). |
No output schema declared.
No examples provided.
eet_get_guide Read an EET 2.0 guide ~141
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).
| Name | Type | Req | Description |
|---|---|---|---|
| response_format | string | – | Output format: 'markdown' (human-readable, default) or 'json' (machine-readable). |
| slug | string | yes | Guide slug from eet_search_guides |
No output schema declared.
No examples provided.
eet_list_misconceptions List common misconceptions about EET 2.0 ~190
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.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | – | Optional filter, e.g. "leden" or "POK" |
| response_format | string | – | Output format: 'markdown' (human-readable, default) or 'json' (machine-readable). |
No output schema declared.
No examples provided.
eet_search_guides Search EET 2.0 guides ~235
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).
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| query | string | yes | Search keywords |
| response_format | string | – | Output format: 'markdown' (human-readable, default) or 'json' (machine-readable). |
No output schema declared.
No examples provided.
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.
remote · evidujzdarma.cz
claude mcp add --transport http cz-evidujzdarma-eet 'https://evidujzdarma.cz/api/mcp'
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.