MCP server

One Million Tools

io.github.lucas-project/one-million-tools

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

42

Token cost

About 4,383 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.one-million-tools]
url = "https://tools-empire-mcp.lucas-qin-au.workers.dev/mcp"

Gemini CLI

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

Cursor

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

VS Code

{"servers":{"one-million-tools":{"type":"http","url":"https://tools-empire-mcp.lucas-qin-au.workers.dev/mcp"}}}

Antigravity

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

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"one-million-tools","server_url":"https://tools-empire-mcp.lucas-qin-au.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"one-million-tools","server_url":"https://tools-empire-mcp.lucas-qin-au.workers.dev/mcp"}

Tools

• base64_decode ~63 tokens
  Base64 string → UTF-8 text.
• base64_encode ~63 tokens
  UTF-8 text → Base64 string.
• color_convert ~85 tokens
  Convert a HEX color into RGB / HSL / HSV / CSS forms.
• cron_explain ~70 tokens
  Explain a cron expression in plain English.
• css_border_radius_build ~102 tokens
  Build a CSS border-radius value from four corner radii in px.
• css_box_shadow_build ~177 tokens
  Build a CSS box-shadow value from one or more layers.
• css_contrast_check ~94 tokens
  Compute the WCAG contrast ratio between two colors and the AA/AAA verdict.
• css_format ~97 tokens
  Pretty-print CSS.
• css_gradient_build ~145 tokens
  Build a CSS linear-gradient string from color stops + angle.
• csv_filter ~152 tokens
  Filter CSV rows by a column predicate (equals / contains / regex / gt / gte / lt / lte / not-empty).
• csv_parse ~117 tokens
  Parse CSV text into fields + preview rows with delimiter detection.
• csv_sort ~126 tokens
  Sort CSV rows by one column (alpha or numeric).
• csv_split ~162 tokens
  Split a CSV into N chunks or into files of N rows each.
• csv_statistics ~79 tokens
  Compute per-column summary statistics (count, min, max, mean, median) over a CSV.
• csv_to_json ~68 tokens
  Parse CSV text into a JSON array of objects.
• env_redact ~76 tokens
  Redact secrets (API keys, tokens, passwords) from logs / config / env text.
• hash_text ~97 tokens
  Compute a SHA-1 / SHA-256 / SHA-512 hex digest of UTF-8 text.
• html_format ~97 tokens
  Pretty-print HTML.
• js_format ~156 tokens
  Pretty-print JavaScript / TypeScript with Prettier.
• json_diff ~81 tokens
  Diff two JSON documents and return added/removed/changed keys.
• json_format ~107 tokens
  Pretty-print JSON with configurable indentation (2 spaces, 4 spaces, or tab).
• json_minify ~66 tokens
  Compress JSON by stripping whitespace.
• json_to_csv ~79 tokens
  Convert an array of JSON objects to CSV.
• json_to_yaml ~61 tokens
  Convert JSON to YAML.
• json_validate ~76 tokens
  Validate JSON syntax and return the parsed value or a line/column error.
• jwt_decode ~72 tokens
  Decode a JWT header + payload. Does not verify the signature.
• markdown_format ~124 tokens
  Normalize Markdown (list markers, trailing whitespace, blank lines).
• markdown_preview ~99 tokens
  Render Markdown to an HTML preview fragment with word/char counts.
• markdown_to_html ~88 tokens
  Convert Markdown to HTML.
• meta_tags_generate ~200 tokens
  Generate <title>, description, Open Graph and Twitter Card tags for a page.
• og_preview_build ~129 tokens
  Build an Open Graph preview metadata bundle (title / description / domain truncation).
• regex_test ~151 tokens
  Test a regular expression against input text and return matches with capture groups.
• sha256_hash ~67 tokens
  Compute a SHA-256 hex digest of UTF-8 text.
• slug_generate ~157 tokens
  Generate a URL slug from a string.
• sql_format ~145 tokens
  Pretty-print SQL.
• text_diff ~102 tokens
  Diff two texts and return part-level changes plus a unified string.
• unix_timestamp_convert ~133 tokens
  Convert a Unix timestamp (seconds or ms) to an ISO 8601 date string.
• url_decode ~85 tokens
  Decode percent-encoded URL text.
• url_encode ~91 tokens
  Percent-encode a string (component or full URI mode).
• uuid_generate ~68 tokens
  Generate RFC 4122 v4 UUIDs.
• yaml_format ~110 tokens
  Pretty-print YAML.
• yaml_to_json ~66 tokens
  Convert YAML to pretty-printed JSON.

Browse

• GitHub tools
• Spreadsheets
• Project management
• GitHub and code hosting
• Government and public data

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