MCP.Market

Csvto MCP server

by Bishop81·io.github.Bishop81/csvto-mcp·v0.1.2
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Local CSV, JSON and Excel conversion. Files are never uploaded and never enter the context.

A88/100grade A
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Safety scan
A88/100

full report

Adoption
New

0 stars48 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Csvto tools (2)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • inspect_file

    Report the columns, row count and any parse warnings for a CSV, JSON or Excel file without loading the whole thing into the conversation. Use before converting so you know the shape of the data.

  • read_rows

    Read a slice of rows from a tabular file, with optional search and sorting, returning them as a compact table. Use this to look at part of a large file without pulling the whole thing into the conversation: ask for the rows you need rather than reading the file directly.

Public scan report

scanner v0.1.10 · 2026-10-29 · same rubric, same numbers if you re-run it

no findings
  • Code scan2 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 61 days ago12/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 88/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Csvto compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
88/100
higher than 75% of 48,255 servers
Tools
2
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Downloads a week
48
more than 40% of 12,191 servers with a package

What its tools let an agent do: 2 read

Install Csvto in Claude Code, Cursor or VS Code

Runs npx -y csvto-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add csvto-mcp -- npx -y csvto-mcp
Add to Cursor

What the publisher says

From the Csvto repository's README, as published. We do not edit it. Read it on GitHub

csvto

CSV, JSON and Excel conversion that runs where your data already is.

path; it converts locally and writes the result beside it. Nothing is uploaded, and file contents never pass through the model's context.

  • csvto-mcp — an MCP server. Point your AI assistant at a file

network, so the same tested code runs in a browser, in a local MCP process, or on a server.

  • @csvto/core — the conversion engine. No DOM, no fs, no

The same engine powers the browser tools at csvtosite.com, where conversion happens client-side and files are likewise never uploaded.

Install the MCP server

claude mcp add csvto -- npx -y csvto-mcp

Or in any MCP client's config:

{
  "mcpServers": {
    "csvto": { "command": "npx", "args": ["-y", "csvto-mcp"] }
  }
}

Requires Node 18+. Full tool list and behaviour: packages/mcp/README.md.

Types are inferred per column, not per cell

This is the part that matters, and where most converters quietly corrupt data. A column converts to numbers only if every value in it survives the round trip exactly. If one value would change, the whole column stays text:

  • 01234 keeps its leading zero instead of becoming 1234
  • A 16-digit account number stays itself instead of becoming 1.23457E+14
  • 1250.50 keeps its trailing zero instead of becoming 1250.5
  • A column never ends up as a mix of numbers and strings

Verified in tests: 01234 survives a CSV → xlsx → CSV round trip intact.

Develop

npm install
npm test          # 49 tests
npm run build

packages/core must stay environment-free — no window, no fs, no fetch. That constraint is what lets one tested engine serve every surface.

Licence

MIT

Nothing above is checked by us. What we check is on the safety report.

Csvto: common questions

Is Csvto MCP server safe?
Yes, by our scan: it is graded A (88/100). Read the Csvto safety report
How do I install Csvto?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Csvto need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Csvto maintained?
The last commit was 66 days ago (2026-08-30). The latest release is v0.1.2.
What can I use instead of Csvto?
Servers from other publishers that do the same job: Ouroboros MCP server and Excel MCP Server.
How does Csvto compare with other MCP servers?
safety score 88/100 (higher than 75% of 48,255 servers); tools 2 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Csvto

Same job from other publishers: the closest match first, then the best rated.

  • Ouroboros
    Pins an acceptance spec; the verify command and expected output never enter the success contract.
    C
  • Excel MCP Server
    Create and edit Excel files with AI: charts, PivotTables, formulas. No Excel needed.
    A

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