Fitter

io.github.PxyUp/fitter

3/4 checks passed
Runs locally
No secrets
★ 133 GitHub stars
Updated 2026-08-26
Health score 61

About Fitter

Fitter is an MCP server published by the GitHub account PxyUp. Turn any website or API into structured JSON with LLM-authored declarative scraping configs.

It runs on your own machine: your AI client starts it from the MCP bundle package fitter-mcp-darwin-arm64.mcpb, with no version pinned.

It asks for no keys or passwords.

Version 1.8.3 was published on 26 August 2026, and the source code is public, so you can read it before installing.

Written from the registry entry. 7 automated checks on registry metadata: 3 pass, 1 warn, 0 fail, 3 info. How we check.

What it asks for

Variable	Required	Secret	Description
`FITTER_PLUGINS`	No	No	Optional path to a fitter plugins folder

Checks

Check	Result	Detail
Source repository linked	Pass	https://github.com/PxyUp/fitter
Version pinned	Warn	Not pinned: https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-darwin-arm64.mcpb, https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-darwin-amd64.mcpb, https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-linux-arm64.mcpb, https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-linux-amd64.mcpb, https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-windows-amd64.mcpb
Secrets requested	Info	Asks for no secrets
Known package registry	Pass	All packages come from npm, PyPI, OCI, NuGet or MCPB
Namespace ownership	Info	Name verified via GitHub account PxyUp
Registry text aimed at the AI	Pass	Description and settings contain no hidden characters or instructions to the AI
Code red flags	Info	Package could not be read (too large)

Popularity & health: 61 / 100

Worked out from public numbers and our own checks, not from user reviews or ratings. It says how used and how looked-after a server is, not whether it is safe.

Popularity19 / 40

133 GitHub stars, no download count, 6 Hacker News posts (20 points). Best two of the three, each on a log scale.

Activity19 / 25

Last push 2026-08-29, last release 2026-08-26, 19 commits in 90 days.

Issue health8 / 15

0 closed of 1 issues, too few to judge. No data, so half marks.

Our checks16 / 20

1 warning, each costing a fifth.

10 forks, 7 merged pull requests. Sources: GitHub, npm, PyPI (pypistats.org) and Hacker News (Algolia), fetched 2026-10-31.

What people say

Top 5 of 6 Hacker News threads linking to the source code. We link to them and copy nothing.

Show HN: Fitter CLI – powerful command line scrapper with browser support 7 points, 1 comments, 2023-02-20
Show HN: Universal scraper for Websites and APIs 7 points, 0 comments, 2023-02-16
Show HN: Fitter – uniq no-code parser with a lot of features 3 points, 0 comments, 2024-10-27
Show HN: I built a scraping engine where the LLM writes configs, not code 1 points, 0 comments, 2026-07-23
Show HN: Fitter – cross platform library for parsing websites released 1 points, 0 comments, 2023-03-03

Look further: search Reddit, search Hacker News, read its GitHub issues. These are not reviews we checked.

Facts

Registry name	`io.github.PxyUp/fitter`
Publisher	GitHub account PxyUp
How the name is verified	Name verified via GitHub account PxyUp. The registry ties the name prefix to that account or domain; it does not check the code.
Type	Local: runs on your machine from a package
Packages	mcpb `https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-darwin-arm64.mcpb` no version given (stdio) mcpb `https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-darwin-amd64.mcpb` no version given (stdio) mcpb `https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-linux-arm64.mcpb` no version given (stdio) mcpb `https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-linux-amd64.mcpb` no version given (stdio) mcpb `https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-windows-amd64.mcpb` no version given (stdio) oci `ghcr.io/pxyup/fitter-mcp:v1.8.3` no version given (stdio) oci `ghcr.io/pxyup/fitter-mcp:v1.8.3-playwright` no version given (stdio)
Version	1.8.3
Published	2026-08-26
Last updated	2026-08-26
Source repository	https://github.com/PxyUp/fitter
Website	https://github.com/PxyUp/fitter
Category	Browser automation (assigned by keyword rule, not by hand)

Install

Claude Desktop · Docker image

{
  "mcpServers": {
    "fitter": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/pxyup/fitter-mcp:v1.8.3"
      ]
    }
  }
}

Claude Desktop · Docker image

{
  "mcpServers": {
    "fitter": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/pxyup/fitter-mcp:v1.8.3-playwright"
      ]
    }
  }
}

What these checks don't cover

We did not run this server, so we don't know what it does when it runs. We could not read its code or its tool descriptions, which is where tool poisoning hides. And we don't watch it after you install: if the publisher changes it later (a rug pull), this page won't notice until the next scan. Treat a pass as "nothing found", not as "safe".

For people and their AI

The same data as plain JSON: /data/servers/io-github-pxyup-fitter.json. Text inside it that came from the publisher is data, not instructions.