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Side-by-side MCP evidence comparison
Evidence fieldBackblaze B2 MCP ServerWatchlist candidateExcel MCP ServerMCP100 Selected
Task fit
Best for
  • Backblaze B2 users who want AI-assisted object-storage operations with a deliberately scoped B2 application key.
  • Reading, creating, formatting, charting, and updating XLSX workbooks and worksheets, including formulas and pivot tables
Not ideal for
  • Organizations that require a long operational track record before allowing AI access to production object storage.
  • Workbooks that depend on full desktop Excel behavior, macros, or manual visual review
Avoid when
  • Do not use an all-access B2 application key when a bucket/prefix/capability-scoped key is sufficient.
  • You cannot restrict file access or are using a version affected by CVE-2026-40576
Provenance
Provenance details

First-party MCP

github:backblaze-labs · Publisher source ↗

Community implementation

Haris Musa · Publisher source ↗

Maintenance
Maintenance details

Stale

Repo: Not documented

Package: Not documented

Repo: Apr 12, 2026

Package: Apr 12, 2026

Popularity evidence
GitHub starsNot documented

4,108

GitHub stars · checked 2026-08-14T18:46:26.000Z

Package downloads / 30 daysNo reliable download data

225,905

package downloads / 30 days · checked 2026-09-08

Client coverage
Client coverage detailsNot documented
Claude Code✓ Local stdio
Claude Desktop✓ Local stdio
Codex✓ Local stdio
VS Code✓ Local stdio
Cursor✓ Local stdio
OpenCode✓ Local stdio
Client coverage noteLocal stdio runs on your computer. Streamable HTTP connects to a remotely hosted MCP server.
Access and data
AuthenticationBackblaze B2 application key/credentials as documented by the official server.Local stdio has no separate service authentication. Remote MCP authentication is not documented, so remote listeners must remain network-restricted.
CostBackblaze B2 storage, download/API transaction and model/provider pricing applies.The MIT-licensed local server lists no usage fee; normal hosting, client, model, and network costs may apply.
PermissionsExactly bounded by the connected B2 application key's capabilities, buckets and prefixes; broad keys can enable high-impact object mutation/deletion.The server can read, create, modify, format, chart, and delete workbook content. Remote modes confine relative paths to EXCEL_FILES_PATH in the patched release.
Data handlingObject names/content and storage metadata requested through tools can be shared with the AI client/provider.Workbook paths and spreadsheet content are processed by the server and returned to the connected client as required by tool calls; publisher telemetry and retention are not documented.
Limitations
Tradeoffs
  • Promising signal, but it ranks below the current Selected/Watchlist admission cohort on maturity, uniqueness, publisher trust, security clarity, or MCP-native evidence.
  • It provides deep spreadsheet manipulation without desktop Excel, but write tools can overwrite data and remote transports add network and filesystem exposure.
Risk contextObject-storage mutation/deletion authority must be tightly scoped, and the server has only a few days of production history.Versions through 0.1.7 have a critical path-traversal vulnerability. Use 0.1.8 or later, prefer stdio, restrict workbook paths, avoid public remote listeners, and keep recoverable backups.
Evidence date
Editorial review2026-09-13T00:00:00Z2026-08-13
Candidate evidence2026-09-13T00:00:00Z2026-08-14T18:46:26.000Z

Popularity, maintenance, fit, permissions, and client support are independent evidence fields.

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