# AutoIsto CZ (remote · www.autoisto.cz)

Used cars for sale in Czechia: plain-language search, price verdicts and typical asking prices.

- Trust score: 87/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `www.autoisto.cz`: 87/100 (this document), [markdown](https://verifymcp.io/servers/cz-autoisto-used-cars/www.md), [page](https://verifymcp.io/servers/cz-autoisto-used-cars/www)

## Channel facts

- Endpoint: `https://www.autoisto.cz/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 2026-11-05.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Nothing on it is marked destructive, but we can't show that an anonymous caller can only read: full credit needs the server to list at least one tool and every tool to be verifiably read-only. We use a best-effort check of tool names and descriptions to tell read-only tools from tools that change things, so some genuinely read-only tools may not get full credit. Names that start with a read verb (get, list, read, search and similar) and accurate readOnlyHint annotations help. Meet that to earn full credit, or require authorisation.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - 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**: 78/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1076 tokens (~269/item across 4 items; 3 tools + 1 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 90/100
  - Stability observed for 27 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.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 3 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.
  - Supports UI / widget rendering.

## Install

### How do I install the AutoIsto CZ MCP server?

AutoIsto CZ is a hosted endpoint at https://www.autoisto.cz/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-autoisto-used-cars 'https://www.autoisto.cz/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "cz-autoisto-used-cars": {
      "url": "https://www.autoisto.cz/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "cz-autoisto-used-cars": {
      "type": "http",
      "url": "https://www.autoisto.cz/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.cz-autoisto-used-cars]
url = "https://www.autoisto.cz/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cz-autoisto-used-cars": {
      "type": "remote",
      "url": "https://www.autoisto.cz/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add cz-autoisto-used-cars --url 'https://www.autoisto.cz/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  cz-autoisto-used-cars:
    url: "https://www.autoisto.cz/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "cz-autoisto-used-cars": {
      "Transport": "http",
      "Url": "https://www.autoisto.cz/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add cz-autoisto-used-cars -t streamable-http -u 'https://www.autoisto.cz/mcp'
```

### Other

```json
{
  "mcpServers": {
    "cz-autoisto-used-cars": {
      "type": "http",
      "url": "https://www.autoisto.cz/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 87, +1)

No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 86, +1)

No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 73 to 77. That category is still filling its 30-day observation window: 22 days of observed history at the previous scan, 23 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-30 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-26 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-23 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-21 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (3)

### `search_cars` (~406 tokens)

Search used cars

Use this when the user wants to find a used car for sale in the Czech Republic — by brand, model, body type, fuel, gearbox, year, price, mileage, power, number of seats or town/region. Covers listings sellers published on AutoIsto directly and public listings from Czech car portals. Pass the criteria as ONE short phrase in Czech (Slovak also works), with numbers as the user said them and prices in CZK. Examples that are fully understood: "škoda octavia kombi nafta automat od 2017 do 350000 Kč", "suv automat do 600000 Kč", "bmw x5 diesel od 2019 do 1000000 Kč", "kombi do 250000 Kč Brno", "9 místná dodávka". Use at most ONE body type per call (kombi, SUV, sedan, hatchback, liftback, MPV, kupé, kabriolet, dodávka, pick-up); for two body types make two calls. Leave out filler and wishes that are not filters (auto, do města, spolehlivé) and equipment (tažné, panorama) — unknown words are not applied and are listed in notUnderstood. Returns up to 10 cars with price verdicts, what was understood, which criteria were relaxed when nothing matched exactly, which words were not applied, and a link to all results. Limits: only cars currently listed on AutoIsto (Czech Republic, prices in CZK); no new-car configurators, rentals, leasing offers or cars abroad; the offer changes daily, so a car may already be sold. Seat counts of 6+ are estimated from the model.

Input parameters:

- `query` (string, required): Concrete criteria in Czech or Slovak, e.g. "bmw x5 diesel od 2019 do 1000000 Kč" or "kombi do 250000 Kč Brno".

Output parameters:

- `allResultsUrl` (string): All matching cars on www.autoisto.cz.
- `cars` (array): Up to 10 cars, AutoIsto's best-value order (closest to the budget when a budget was given).
- `notUnderstood` (array): Words from the query that were NOT applied as filters (unknown words, two body types at once, equipment). Empty together with empty relaxed = the results match everything in the query.
- `note` (string|null)
- `query` (string)
- `relaxed` (array): Criteria from the phrase dropped because nothing matched exactly, in Czech; the returned cars do NOT meet them.
- `totalMatches` (integer): How many cars in the offer match (after relaxing, if any). 0 = nothing matched even after relaxing.
- `understood` (array): Filters from the phrase that the returned cars match, in Czech (e.g. Škoda, Octavia, cena do 300 000 Kč).

### `get_car_details` (~129 tokens)

Get car details

Use this when the user asks for more about one specific car returned by search_cars (engine power, body, colour, price history, how long it has been listed). Requires the car id from search_cars; do not guess ids. Returns technical data and the AutoIsto price verdict; it does not return the seller's name, phone, description, VIN or licence plate — for contact the user opens the car's url. If the car is no longer in the offer, found is false.

Input parameters:

- `carId` (string, required): The id of a car from search_cars results.

Output parameters:

- `car`
- `found` (boolean)
- `note` (string|null)

### `get_model_price` (~292 tokens)

Get typical price of a model year

Use this when the user asks how much a car model of a given year costs in the Czech Republic, or whether a price for it is reasonable. Returns, for one brand, model and model year: the median ASKING price in AutoIsto's current offer (any mileage) and the median LAST price at which such cars left the offer, each with its sample size, and the month. A figure is omitted when its sample is too small. Asking prices are what sellers ask, not sale prices, and a car leaving the offer is not proof of a sale; mileage and equipment move the price, so present it as a guide. Requires a year; if the user did not give one, ask. Do not use it for valuing a specific car's condition, for new-car prices or for markets outside the Czech Republic.

Input parameters:

- `brand` (string, required): Car brand, e.g. Škoda, Volkswagen, BMW (abbreviations such as VW work).
- `model` (string, required): Model, e.g. Octavia, Golf, X5, Řada 3, Třída C (English names such as 3 Series or C-Class also work — the interpretation is returned). Versions, body variants and generations (RS, Combi, B8) are not…
- `year` (integer, required): Model year.

Output parameters:

- `askingSampleSize`
- `brand` (string|null)
- `exitPriceLowerQuartileCzk`
- `exitPriceUpperQuartileCzk`
- `exitSampleSize`
- `found` (boolean)
- `interpretation` (string|null): How the model name was understood when AutoIsto knows it under another name ("3 Series" → Řada 3, "C-Class" → Třída C). Tell the user.
- `medianAskingPriceCzk`: Median ASKING price of this model and year in today's offer (any mileage); null when the sample is too small.
- `medianExitPriceCzk`: Median of the LAST price at which cars of this model and year left AutoIsto's offer (removed from the offer — not necessarily sold); null when too few.
- `model` (string|null)
- `month` (string|null): Month the figures are for (YYYY-MM, Prague time).
- `notApplied` (string|null): Part of the requested model the figures do NOT reflect (version, body, generation, e.g. "RS", "Combi", "B8"): figures cover the whole model. Tell the user.
- `note` (string|null)
- `url` (string|null): Search for this model and year on www.autoisto.cz.
- `year`

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/cz-autoisto-used-cars/www#diagnostics

## Score history

- 2026-11-05: 87
- 2026-11-04: 86
- 2026-11-03: 86
- 2026-11-02: 85
- 2026-11-01: 85
- 2026-10-31: 84
- 2026-10-30: 84
- 2026-10-29: 83
- 2026-10-28: 83
- 2026-10-27: 82
- 2026-10-26: 82
- 2026-10-25: 81
- 2026-10-24: 81
- 2026-10-23: 81
- 2026-10-22: 80
- 2026-10-21: 80
- 2026-10-20: 79
- 2026-10-19: 79
- 2026-10-18: 78
- 2026-10-17: 78
- 2026-10-16: 77
- 2026-10-15: 77
- 2026-10-14: 76
- 2026-10-13: 76
- 2026-10-12: 75
- 2026-10-10: 74
- 2026-10-09: 74

## Common questions

### What is the AutoIsto CZ MCP server?

AutoIsto CZ is an MCP server listed in the public MCP registry as cz.autoisto/used-cars. Used cars for sale in Czechia: plain-language search, price verdicts and typical asking prices. This page covers its hosted endpoint (https://www.autoisto.cz/mcp).

### Is the AutoIsto CZ MCP server safe to use?

AutoIsto CZ scores 87 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 AutoIsto CZ MCP server expose?

AutoIsto CZ exposes 3 tools: search_cars, get_car_details, get_model_price. Their descriptions and schemas cost roughly 827 tokens of context every time the server is loaded.

### Does the AutoIsto CZ MCP server require authentication?

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

### Is the AutoIsto CZ MCP server still maintained?

AutoIsto CZ 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.

### What did VerifyMCP test on the AutoIsto CZ MCP server?

VerifyMCP ran 14 checks on AutoIsto CZ, covering TLS certificate, Authorization, HTTPS, HSTS header and 10 more. Supply Chain Security and Provenance & Transparency do not apply to a hosted endpoint, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- Remote endpoint: https://www.autoisto.cz/mcp
- Website: https://www.autoisto.cz/
- Changelog RSS feed: https://verifymcp.io/servers/cz-autoisto-used-cars/www.xml
- Changelog JSON feed: https://verifymcp.io/servers/cz-autoisto-used-cars/www/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/cz-autoisto-used-cars/www.json
- HTML version of this page: https://verifymcp.io/servers/cz-autoisto-used-cars/www