All servers · Utilities

One Million Tools

io.github.lucas-project/one-million-tools · v0.1.0

Measured by MCP Station

Description written by the publisher, not verified

42 free deterministic utilities: JSON, CSV, YAML, encoding, hashing, JWT, cron, formatters, CSS.

Connect

claude mcp add --transport http one-million-tools https://tools-empire-mcp.lucas-qin-au.workers.dev/mcp

{
  "mcpServers": {
    "one-million-tools": {
      "url": "https://tools-empire-mcp.lucas-qin-au.workers.dev/mcp"
    }
  }
}

Tools as reported by the server

• json_format
  Pretty-print JSON with configurable indentation (2 spaces, 4 spaces, or tab).
• json_minify
  Compress JSON by stripping whitespace.
• json_validate
  Validate JSON syntax and return the parsed value or a line/column error.
• json_diff
  Diff two JSON documents and return added/removed/changed keys.
• json_to_yaml
  Convert JSON to YAML.
• yaml_to_json
  Convert YAML to pretty-printed JSON.
• json_to_csv
  Convert an array of JSON objects to CSV.
• csv_to_json
  Parse CSV text into a JSON array of objects.
• base64_encode
  UTF-8 text → Base64 string.
• base64_decode
  Base64 string → UTF-8 text.
• url_encode
  Percent-encode a string (component or full URI mode).
• url_decode
  Decode percent-encoded URL text.
• sha256_hash
  Compute a SHA-256 hex digest of UTF-8 text.
• hash_text
  Compute a SHA-1 / SHA-256 / SHA-512 hex digest of UTF-8 text.
• uuid_generate
  Generate RFC 4122 v4 UUIDs.
• regex_test
  Test a regular expression against input text and return matches with capture groups.
• unix_timestamp_convert
  Convert a Unix timestamp (seconds or ms) to an ISO 8601 date string.
• jwt_decode
  Decode a JWT header + payload. Does not verify the signature.
• sql_format
  Pretty-print SQL.
• html_format
  Pretty-print HTML.
• css_format
  Pretty-print CSS.
• js_format
  Pretty-print JavaScript / TypeScript with Prettier.
• yaml_format
  Pretty-print YAML.
• cron_explain
  Explain a cron expression in plain English.
• env_redact
  Redact secrets (API keys, tokens, passwords) from logs / config / env text.
• csv_parse
  Parse CSV text into fields + preview rows with delimiter detection.
• csv_sort
  Sort CSV rows by one column (alpha or numeric).
• csv_filter
  Filter CSV rows by a column predicate (equals / contains / regex / gt / gte / lt / lte / not-empty).
• csv_split
  Split a CSV into N chunks or into files of N rows each.
• csv_statistics
  Compute per-column summary statistics (count, min, max, mean, median) over a CSV.
• text_diff
  Diff two texts and return part-level changes plus a unified string.
• markdown_format
  Normalize Markdown (list markers, trailing whitespace, blank lines).
• markdown_to_html
  Convert Markdown to HTML.
• markdown_preview
  Render Markdown to an HTML preview fragment with word/char counts.
• slug_generate
  Generate a URL slug from a string.
• meta_tags_generate
  Generate <title>, description, Open Graph and Twitter Card tags for a page.
• og_preview_build
  Build an Open Graph preview metadata bundle (title / description / domain truncation).
• color_convert
  Convert a HEX color into RGB / HSL / HSV / CSS forms.
• css_gradient_build
  Build a CSS linear-gradient string from color stops + angle.
• css_border_radius_build
  Build a CSS border-radius value from four corner radii in px.
• css_box_shadow_build
  Build a CSS box-shadow value from one or more layers.
• css_contrast_check
  Compute the WCAG contrast ratio between two colors and the AA/AAA verdict.

Website · JSON · Text for agents · Registry updated 2026-10-21