io.github.appvantagelabs2-a11y/barcode
Barcode Tools (decode, render, GTIN validate)
Decode, render, validate barcodes: QR, DataMatrix, EAN, UPC, PDF417. All tools free, no auth.
alive probed 2026-10-05 · HTTP 200
4tools
942tokens in Claude Opus 5.5
974tokens in Claude Code
0.5 %of a 200k context window
569o200k_base estimate
884 msto initialize
363 msto list tools
- Endpoint
- https://mcp.casuyi.com/mcp (streamable-http)
- Host
- mcp.casuyi.com
- Protocol
- 2025-11-25
- Reports itself as
- barcode-mcp 0.3.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Website
- https://mcp.casuyi.com/
- Registry
- active, updated 2026-09-16 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| render_barcode | 227 | 40 % |
| decode_barcode | 182 | 32 % |
| validate_gtin | 110 | 19 % |
| list_formats | 50 | 9 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-05 14:32 | alive | 884 ms | 4 | 942 | 569 |
| 2026-10-05 00:32 | alive | 808 ms | 4 | 569 | |
| 2026-10-04 10:03 | alive | 2.0 s | 4 | 569 | |
| 2026-10-04 07:57 | alive | 1.9 s | 4 | 569 | |
| 2026-10-03 20:36 | alive | 1.7 s | 4 | 569 | |
| 2026-10-03 17:52 | alive | 228 ms | 4 | 569 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.appvantagelabs2-a11y/barcode)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.