dev.cz-agents/cnb
NPM · @CZAGENTS/CNB · 2 COMPONENTS
Official ČNB exchange rates — daily & historical CZK vs EUR, USD, 30+ currencies. For accounting.
Available components
Last scanned (6 hours ago)
Scores higher than 65% of npm servers
Category Finance and Payments
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. How we score → Why this is hard to score →
Supply Chain Security80
- No malware found by supply-chain analysis.Pass
- CVE check failed: a known high-severity CVE affects zod 3.25.76, a direct dependency. A fixed version is available. View diagnostics → Fail
- No install/post-install scripts declared.Pass
- 51 of 129 dependencies flagged as unhealthy (1 deprecated). View diagnostics → Partial
Provenance & Transparency48
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 155 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability79
- AI-judged instruction clarity (excellent).Pass
- Tool/resource definitions use about 320 tokens (~106/item across 3 items; 3 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 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.
- 4 Nov 26 +1
- Stability: 0.97 → pass security
- 3 Nov 26 −1
- Stability: pass → 0.97 functional
- 28 Oct 26 +1
- Stability: 0.97 → pass security
- 27 Oct 26 −1
- Stability: pass → 0.97 functional
- 24 Oct 26 −5
- CVE-2023-54404 affects this package: high ▼ security
- Known CVEs: pass → fail ▼ security
- 21 Oct 26 0
- Stability: 0.97 → pass security
- 20 Oct 26 0
- Stability: pass → 0.97 functional
- 17 Oct 26 +2
- Stability: 0.83 → pass security
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 5 Nov 2026 · Analysed npm/@czagents/cnb@0.1.5
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Vulnerabilities 1 finding
| ID | CVE | Severity | Vector | Fix available |
|---|---|---|---|---|
| GHSA-mrhx-c7xc-m3w5 | CVE-2023-54404 | high | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | yes |
Background: What a vulnerability scan can and cannot prove →
Dependencies 129 packages
| Packages resolved | 129 |
|---|---|
| Deprecated | 1 |
| Stale | 50 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
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 →
convert ~122
Convert an amount between two currencies using official ČNB rates. E.g., convert 100 EUR to CZK, or 50 USD to GBP (goes via CZK cross-rate). Optional `date` for historical conversion.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | number | yes | Amount to convert. |
| date | string | – | Optional ISO date for historical rates. Omit for latest. |
| from | string | yes | Source currency ISO 4217 code (e.g., "EUR", "USD", "CZK"). |
| to | string | yes | Target currency ISO 4217 code. |
No output schema declared.
No examples provided.
get_rate ~70
Quick single-currency lookup. Returns just the CZK rate for one currency (or all rates if no code given).
| Name | Type | Req | Description |
|---|---|---|---|
| code | string | yes | ISO 4217 currency code (e.g., "EUR", "USD", "GBP"). |
| date | string | – | Optional ISO date for historical rate. |
No output schema declared.
No examples provided.
get_rates ~71
Get official CZK exchange rates published by ČNB. Returns all currencies from the daily sheet (~31 majors). Optional `date` parameter (YYYY-MM-DD) for historical rates; otherwise returns latest.
| Name | Type | Req | Description |
|---|---|---|---|
| date | string | – | Optional ISO date (YYYY-MM-DD) for historical rates. Omit for latest. |
No output schema declared.
No examples provided.
How do I install the dev.cz-agents/cnb MCP server?
dev.cz-agents/cnb runs locally as an npm package, launched with npx -y @czagents/cnb. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · @czagents/cnb
claude mcp add dev-cz-agents-cnb -- npx -y @czagents/cnb
What is the dev.cz-agents/cnb MCP server?
dev.cz-agents/cnb is an MCP server listed in the public MCP registry as dev.cz-agents/cnb. Official ČNB exchange rates, daily & historical CZK vs EUR, USD, 30+ currencies. For accounting. This page covers its npm package (@czagents/cnb).
Is the dev.cz-agents/cnb MCP server safe to use?
dev.cz-agents/cnb scores 80 out of 100 on VerifyMCP. We recorded 1 known advisory against it as of 5 November 2026. It declares no install or post-install scripts. 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 dev.cz-agents/cnb MCP server expose?
dev.cz-agents/cnb exposes 3 tools: get_rates, convert, get_rate. Their descriptions and schemas cost roughly 263 tokens of context every time the server is loaded.
Is the dev.cz-agents/cnb MCP server still maintained?
dev.cz-agents/cnb 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 licence is the dev.cz-agents/cnb MCP server under?
dev.cz-agents/cnb declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.