dev.cz-agents/payqr
REMOTE · PAYQR.CZ-AGENTS.DEV · 2 COMPONENTS · SCANNED SEP 21
European payment QR — SPAYD (CZ/SK) & EPC/GiroCode (SEPA), plus text/WiFi/vCard. Local, free.
Available components
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 Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 6 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability66
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1083 tokens (~180/item across 6 items; 6 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 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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 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
How do I install the dev.cz-agents/payqr MCP server?
dev.cz-agents/payqr is a hosted endpoint at https://payqr.cz-agents.dev/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 · payqr.cz-agents.dev
claude mcp add --transport http dev-cz-agents-payqr 'https://payqr.cz-agents.dev/mcp'
{
"mcpServers": {
"dev-cz-agents-payqr": {
"url": "https://payqr.cz-agents.dev/mcp"
}
}
} {
"servers": {
"dev-cz-agents-payqr": {
"type": "http",
"url": "https://payqr.cz-agents.dev/mcp"
}
}
} [mcp_servers.dev-cz-agents-payqr] url = "https://payqr.cz-agents.dev/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"dev-cz-agents-payqr": {
"type": "remote",
"url": "https://payqr.cz-agents.dev/mcp",
"enabled": true
}
}
} openclaw mcp add dev-cz-agents-payqr --url 'https://payqr.cz-agents.dev/mcp' --transport streamable-http
mcp_servers:
dev-cz-agents-payqr:
url: "https://payqr.cz-agents.dev/mcp" {
"McpServers": {
"dev-cz-agents-payqr": {
"Transport": "http",
"Url": "https://payqr.cz-agents.dev/mcp"
}
}
} assistant mcp add dev-cz-agents-payqr -t streamable-http -u 'https://payqr.cz-agents.dev/mcp'
{
"mcpServers": {
"dev-cz-agents-payqr": {
"type": "http",
"url": "https://payqr.cz-agents.dev/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 26 Aug 26 +1
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 11 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 9 Aug 26 0
- Server version: 0.1.10 → 0.1.12 functional
- 31 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 30 Jul 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 29 Jul 26 0
- New tool “qr_payment_batch” functional
- 28 Jul 26 0
- Stability: unverified → 0.03 ▲ functional
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 21 Sept 2026 · Probed https://payqr.cz-agents.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=cz-agents.dev | CN=YE2,O=Let's Encrypt,C=US | 12 Aug 2026 | 10 Nov 2026 | ECDSA 256 | ECDSA-SHA384 | 598c9c9b6bc9d3a215029ec54fd11ecbb0b |
| SANs: *.cz-agents.dev, cz-agents.dev | ||||||
| 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 insecure
Validation of payqr.cz-agents.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| cz-agents.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
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 |
|---|---|
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://payqr.cz-agents.dev/mcp | Verified | 200 | |
| http (plaintext) | http://payqr.cz-agents.dev/mcp | HTTPS enforced | 301 | https://payqr.cz-agents.dev/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 →
qr_payment ~221
Create a European payment QR code. Auto-selects SPAYD for CZ/SK IBANs and EPC/GiroCode for other SEPA IBANs.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | number | – | Optional payment amount. |
| bic | string | – | Optional BIC for EPC/GiroCode line 5. Ignored with a warning for SPAYD. |
| constant_symbol | string | – | Optional Czech constant symbol for SPAYD. |
| currency | string | – | Optional ISO 4217 currency code. Defaults to CZK for SPAYD and EUR for EPC. |
| iban | string | yes | Recipient IBAN. Validated with the IBAN mod-97 checksum. |
| message | string | – | Optional payment message or EPC remittance text. |
| recipient_name | string | – | Recipient name. Required for EPC/GiroCode. |
| standard | string | – | Payment QR standard. Defaults to auto detection. |
| variable_symbol | string | – | Optional reference: goes to remittance (line 11) for EPC, to X-VS for SPAYD. |
No output schema declared.
No examples provided.
qr_payment_batch ~86
PAID. Create payment QR codes for a whole batch of payments in one call — e.g. an invoice run. The free qr_payment tool handles one payment per call; this one returns the whole set. Requires payment via x402; call without payment first to receive the terms.
| Name | Type | Req | Description |
|---|---|---|---|
| payments | array | yes | Up to 50 payments. Each QR is generated and verified independently. |
No output schema declared.
No examples provided.
qr_read ~48
Decode a QR code from a base64 PNG/JPEG image or image data URI and classify its content.
| Name | Type | Req | Description |
|---|---|---|---|
| image_data | string | yes | Base64 image bytes or a PNG/JPEG data URI. |
No output schema declared.
No examples provided.
qr_text ~30
Create a QR code containing plain text.
| Name | Type | Req | Description |
|---|---|---|---|
| text | string | yes | Text to encode in the QR code. |
No output schema declared.
No examples provided.
qr_vcard ~62
Create a QR code containing a vCard 3.0 contact.
| Name | Type | Req | Description |
|---|---|---|---|
| string | – | Optional email address. | |
| name | string | yes | Contact display name. |
| org | string | – | Optional organization. |
| phone | string | – | Optional phone number. |
No output schema declared.
No examples provided.
qr_wifi ~64
Create a Wi-Fi network QR code.
| Name | Type | Req | Description |
|---|---|---|---|
| hidden | boolean | – | Whether the network SSID is hidden. |
| password | string | – | Optional Wi-Fi password. |
| security | string | – | Wi-Fi security type. |
| ssid | string | yes | Wi-Fi network name. |
No output schema declared.
No examples provided.
What is the dev.cz-agents/payqr MCP server?
dev.cz-agents/payqr is an MCP server listed in the public MCP registry as dev.cz-agents/payqr. European payment QR, SPAYD (CZ/SK) & EPC/GiroCode (SEPA), plus text/WiFi/vCard. Local, free. This page covers its hosted endpoint (https://payqr.cz-agents.dev/mcp).
Is the dev.cz-agents/payqr MCP server safe to use?
dev.cz-agents/payqr scores 77 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 dev.cz-agents/payqr MCP server expose?
dev.cz-agents/payqr exposes 6 tools: qr_payment, qr_text, qr_wifi, qr_vcard, qr_read, qr_payment_batch. Their descriptions and schemas cost roughly 511 tokens of context every time the server is loaded.
Does the dev.cz-agents/payqr MCP server require authentication?
No. We connected to dev.cz-agents/payqr without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the dev.cz-agents/payqr MCP server still maintained?
dev.cz-agents/payqr is still listed as active in the MCP registry. We last reached this channel on 21 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.