Developer Utilities

Streamline technical workflows with a comprehensive suite of data transformation and validation utilities.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Tool Json Validate: Validate a JSON string. Returns parsed object or detailed error.
  • Tool Json Format: Pretty-print or minify a JSON string.
  • Tool Base64 Encode: Encode a string to base64.

What data it sees

Do you need an account

No: the server works without sign-in

Streamline technical workflows with a comprehensive suite of data transformation and validation utilities. Convert between diverse formats like JSON, CSV, and Markdown while managing encodings and identifiers efficiently. Enhance productivity by performing complex text analysis, regex testing, and timestamp conversions instantly.

How to connect

How to connect Developer Utilities to Claude

The server address to paste into Claude settings:

https://agent-utils--aparajithn.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Developer Utilities to ChatGPT

The server address to paste into ChatGPT settings:

https://agent-utils--aparajithn.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Developer Utilities to Cursor

The server address to paste into Cursor settings:

https://agent-utils--aparajithn.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (18)

Raw names from tools/list. Only developers need these.

tool_json_validateValidate a JSON string. Returns parsed object or detailed error.
tool_json_formatPretty-print or minify a JSON string.
tool_base64_encodeEncode a string to base64.
tool_base64_decodeDecode a base64 string.
tool_hash_generateGenerate hash (md5, sha256, sha512) of input text.
tool_uuid_generateGenerate a UUID (v4 or v7).
tool_url_parseParse a URL into components (scheme, host, path, params, etc.).
tool_regex_testTest a regex pattern against text and return all matches.
tool_markdown_to_htmlConvert Markdown to HTML.
tool_html_to_markdownConvert HTML to Markdown.
tool_text_statsCompute text statistics: word count, char count, sentences, reading time.
tool_slug_generateGenerate a URL-safe slug from text.
tool_datetime_convertConvert a datetime between timezones/formats, including Unix timestamps.
tool_cron_parseParse a cron expression: human-readable description + next N run times.
tool_diff_textCompute a unified diff between two texts.
tool_csv_to_jsonConvert CSV text to a JSON array of objects.
tool_json_to_csvConvert a JSON array to CSV text.
tool_jwt_decodeDecode a JWT payload without verification (inspection only).