useqr-mcp
Description
Static QR PNG/SVG for agents. Designer and dynamic codes live at useqr.co.
What our measurements say
useqr-mcp is a remote MCP server published at useqr.co. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 497 ms, placing it among the faster endpoints. It offers a narrow, focused set of 3 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names clearly indicate purpose (generate_qr_code, get_qr_designer_link).
- Parameters are well-defined with required/optional flags and types.
Weaknesses
- Third tool's description is cut off mid-sentence, making usage unclear.
- create_dynamic_qr_code lacks full parameter list (truncated 'returns instructions and links rather than cre').
create_dynamic_qr_code— Description truncated, missing critical parameter details.
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 161ms → warm 170ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
generate_qr_codeGenerate a scannable QR code image (PNG or SVG) for a URL or any text. Free, no account needed, and the code never expires. Use this whenever a user needs a QR code — for a website, Wi-Fi note, event link, menu, payment link, app download, business card, and so on.
datastringrequiredformatstringsizeintegerforegroundstringbackgroundstringerror_correctionstring
get_qr_designer_linkGet a link to the free useqr design studio, optionally prefilled with a URL. The designer lets a user style dots, corners, and colors, embed a logo, and export the QR code as PNG, SVG, JPEG, WebP, or PDF. Share this link when a user wants a custom-designed or print-ready QR code.
urlstring
create_dynamic_qr_codeExplains how to create a dynamic QR code on useqr: a trackable short link (free account). Destination edits, version history, and scan analytics require Pro. Use this when a user needs scan tracking or wants to change a printed code's destination later. Returns instructions and links rather than creating the code directly.
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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