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Fitter

Turn any website or API into structured JSON with LLM-authored declarative scraping configs.

Connector by PxyUp · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)★ 133
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Install

Works with Claude Code, Codex, VS Code, Claude Desktop, Cursor, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install connector/pxyup-fitter

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Turn any website or API into structured JSON with LLM-authored declarative scraping configs.

Use cases: web-scraping, api-integration

Reviews

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No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools
3 read · 3 write · 0 delete
Secrets
None asked for
Install scripts
Not scanned yet
Runs as
Docker image

Tools by what they do 6

Read from the source code; the running server may list different tools.

Read 3 · Look things up without changing anything.

  • fitter_config_reference
  • fitter_inspect_url
  • fitter_validate_config

Write 3 · Create, change, send or run things.

  • fitter_run
  • fitter_run_file
  • fitter_run_url

Secrets and settings it asks for

Other settings (environment variables or headers).

  • FITTER_PLUGINS

Network hosts it talks to 1

  • github.com · found in install command

Tools (6)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

  • fitter_config_reference

    Return a condensed reference of the Fitter config format (connectors, parsers, model/field schema, placeholders, notifiers, references, limits) with working examples. Use it before authoring a config for fitter_run.

  • fitter_inspect_url

    Fetch a URL and return a compact structure outline plus candidate selectors/paths, so you can author a fitter config that matches on the first try instead of guessing selectors and getting nulls. For JSON it lists gjson paths with types and sample values; for HTML it lists repeated elements (candidate array_config root_path / list rows) and link/heading selectors. For client-rendered SPAs (content built by JavaScript), a plain fetch sees only an empty shell — the output warns when it detects one; pass render:true to render it in a headless browser first (mirrors what a browser_config scrape wo…

  • fitter_run

    Run a Fitter scraping/parsing config passed inline (JSON or YAML) and return the extracted data as JSON. Fitter fetches data via a connector (HTTP request, headless browser, static value, file, ...) and extracts structured data using json/HTML/XML/xpath selectors described by a declarative model. Call fitter_config_reference first if you are unsure about the config format.

  • fitter_run_file

    Run a Fitter scraping/parsing config from a local JSON or YAML file and return the extracted data as JSON. Same as fitter_run but reads the config from disk.

  • fitter_run_url

    Run a Fitter scraping/parsing config downloaded from an HTTP(S) URL (JSON or YAML) and return the extracted data as JSON. Same as fitter_run but fetches the config from a remote location, e.g. a raw GitHub link.

  • fitter_validate_config

    Validate a Fitter config (JSON or YAML) without executing it. Checks the structural rules: item/connector_config/model presence, valid response_type, that the connector has a data source, and compiles every condition/item_condition expression in the model. Returns "valid" or the validation error. Cheap and safe — use it while iterating on a config before calling fitter_run.

Compare and alternatives

    Featured in

    Signals

    Stars
    133
    Forks
    10
    Open issues
    1
    Contributors
    4
    Last commit
    Aug 26, 2026 (2 months ago)
    Last release
    Aug 26, 2026 (2 months ago)

    From GitHub (fetched Oct 24, 2026).

    Details

    Registry name
    io.github.PxyUp/fitter
    Version
    1.8.3
    Auth
    No auth
    Packages
    mcpb https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-darwin-arm64.mcpbmcpb https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-darwin-amd64.mcpbmcpb https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-linux-arm64.mcpbmcpb https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-linux-amd64.mcpbmcpb https://github.com/PxyUp/fitter/releases/download/v1.8.3/fitter-mcp-windows-amd64.mcpboci ghcr.io/pxyup/fitter-mcp:v1.8.3oci ghcr.io/pxyup/fitter-mcp:v1.8.3-playwright
    License
    MIT
    Repository
    github.com/PxyUp/fitter
    Website
    github.com/PxyUp/fitter
    First seen
    Oct 24, 2026
    Last checked
    Oct 24, 2026
    Source
    Official MCP Registrygithub-graphql
    Cite this page

    Fitter MCP server. Agent Mart. https://agentmart.dev/connectors/pxyup-fitter (last updated 2026-10-24)