net.programmes/developer-tools
net.programmes/developer-tools65+ free in-browser developer tools (JSON, Base64, JWT, hash, regex…) callable over MCP.
Tools · 59
Format, minify, validate and convert JSON.. Operations: "format" — Pretty-print JSON with a configurable indent.; "minify" — Strip all insignificant whitespace from JSON.; "validate" — Check whether t…
Encode and decode text in Base64, Base64URL, Base32, Base58, Base85 and hex.. Operations: "encode" — Encode text into the chosen format.; "decode" — Decode text from the chosen format back to plain te…
Parse, validate and normalize URLs.. Operations: "parse" — Break a URL into its component parts.; "validate" — Validate a URL and run basic security/heuristic checks.; "normalize" — Normalize a URL (d…
Percent-encode and decode URL strings.. Operations: "encode" — Percent-encode a string.; "decode" — Decode a percent-encoded string.. Call with "operation" plus "input" (and "options" where relevant).
Decode JWT header and payload (no signature verification).. Operations: "decode" — Decode a JWT into its header, payload and signature.. Call with "operation" plus "input" (and "options" where relevan…
Encode and decode HTML entities (named, decimal, hex).. Operations: "encode" — Encode text into HTML entities.; "decode" — Decode HTML entities back to plain text.. Call with "operation" plus "input" …
Compute MD5, SHA-1/256/384/512, CRC32 and HMAC digests.. Operations: "hash" — Hash text with the chosen algorithm.; "hmac" — Compute an HMAC digest (SHA algorithms only).. Call with "operation" plus "…
Generate and inspect UUIDs.. Operations: "v4" — Generate one or more random (v4) UUIDs.; "v3" — Generate a name-based (v3 / MD5) UUID.; "parse" — Parse a UUID and report its version, variant and (wher…
Generate strong random passwords and estimate their strength.. Operations: "generate" — Generate a cryptographically random password.; "strength" — Estimate the entropy and strength bucket of a passwo…
Generate cryptographically secure random strings.. Operations: "generate" — Generate a secure random string from a chosen pattern.. Call with "operation" plus "input" (and "options" where relevant).
Convert text between camelCase, snake_case, kebab-case and more.. Operations: "convert" — Convert text to a single chosen case.; "all" — Return every supported case transform at once.. Call with "oper…
Turn arbitrary text into a clean, URL-safe slug.. Operations: "slugify" — Generate a URL slug from text.. Call with "operation" plus "input" (and "options" where relevant).
Convert between YAML and JSON.. Operations: "yaml-to-json" — Convert YAML to JSON.; "json-to-yaml" — Convert JSON to YAML.. Call with "operation" plus "input" (and "options" where relevant).
Generate TypeScript type declarations from a JSON sample.. Operations: "generate" — Infer TypeScript interfaces/types from JSON.. Call with "operation" plus "input" (and "options" where relevant).
Convert between JSON and CSV.. Operations: "json-to-csv" — Convert a JSON array/object to CSV.; "csv-to-json" — Convert CSV to a JSON array.. Call with "operation" plus "input" (and "options" where re…
Convert colors between HEX, RGB, HSL, HSV and CMYK.. Operations: "convert" — Convert a HEX color to every supported color space.; "palette" — Generate a color harmony palette from a base color.. Call …
Convert numbers between binary, octal, decimal and hex.. Operations: "convert" — Convert a number from one base to all supported bases.. Call with "operation" plus "input" (and "options" where relevan…
Convert between octal and symbolic Unix file permissions.. Operations: "octal-to-symbolic" — Convert octal permissions (e.g. "755") to a symbolic string and description.; "symbolic-to-octal" — Convert…
Look up and search HTTP status codes.. Operations: "lookup" — Look up a single status code by number.; "search" — Search status codes by number, name or description.. Call with "operation" plus "input…
Minify or beautify CSS.. Operations: "minify" — Minify CSS (strip comments and whitespace).; "beautify" — Beautify CSS (one declaration per line, indented).. Call with "operation" plus "input" (and "o…
Convert a curl command into fetch / Python / Node snippets.. Operations: "convert" — Parse a curl command and generate code snippets.. Call with "operation" plus "input" (and "options" where relevant)…
Format and minify SQL.. Operations: "beautify" — Beautify SQL with newlines before clauses.; "minify" — Minify SQL to a single line.. Call with "operation" plus "input" (and "options" where relevant).
Pretty-print or minify already-serialized XML, and highlight it.. Operations: "format" — Pretty-print XML with the chosen indent (server-safe string transform).; "minify" — Collapse whitespace between…
Format, minify and validate HTML.. Operations: "format" — Pretty-print HTML.; "minify" — Minify HTML (strip comments and collapse whitespace).; "validate" — Check HTML for unclosed/mismatched tags.. C…
Render Markdown to HTML, build a TOC and compute statistics.. Operations: "render" — Render GitHub-flavored Markdown to sanitized HTML.; "toc" — Extract a table of contents from Markdown headers.; "st…
Convert and inspect Unix timestamps and dates.. Operations: "to-date" — Convert a Unix timestamp (seconds) to a full date breakdown.; "parse-date" — Auto-detect and parse a date/timestamp string.. Cal…
Describe cron expressions and compute upcoming run times.. Operations: "describe" — Produce a human-readable description of a cron expression.; "next-runs" — Compute the next N run times for a cron ex…
Test a regex against a string and apply replacements.. Operations: "test" — Find all matches of a regex pattern in a test string.; "replace" — Replace regex matches in a string.. Call with "operation"…
Generate placeholder text in several styles.. Operations: "generate" — Generate lorem ipsum (or themed) placeholder text.. Call with "operation" plus "input" (and "options" where relevant).
Count words/characters and compute readability statistics.. Operations: "count" — Compute basic text statistics (words, characters, sentences, etc.).; "readability" — Compute readability scores (Flesc…
Compute a line-by-line diff between two texts.. Operations: "compare" — Diff two texts and return the lines plus statistics.; "unified" — Produce a unified-diff text between two inputs.. Call with "op…
Hash and verify passwords with bcrypt.. Operations: "hash" — Hash a password with bcrypt at the given cost.; "verify" — Verify a plaintext password against a bcrypt hash.. Call with "operation" plus "…
Build the standard WIFI: payload string for a WiFi QR code.. Operations: "payload" — Build the WIFI: payload string a phone scans to auto-join a network.. Call with "operation" plus "input" (and "opti…
Generate a combined .gitignore from template keys.. Operations: "generate" — Combine one or more template keys into a .gitignore.; "templates" — List the available .gitignore template keys.. Call with…
Check WCAG contrast between a foreground and background color.. Operations: "check" — Compute the contrast ratio and WCAG pass/fail for a color pair.; "best-text" — Pick black or white text for the be…
Build and parse base64 data URIs and embed snippets.. Operations: "build-snippets" — Build HTML/CSS/Markdown snippets from an existing data URI.. Call with "operation" plus "input" (and "options" wher…
Infer a draft-07 JSON Schema from sample JSON.. Operations: "generate" — Infer a draft-07 JSON Schema from sample JSON. Call with "operation" plus "input" (and "options" where relevant).
Parse a CIDR block into its network, broadcast and host range.. Operations: "calculate" — Calculate the network, broadcast, mask and host range for a CIDR block.. Call with "operation" plus "input" (a…
Parse a User-Agent string into browser, engine, OS and device.. Operations: "parse" — Parse a User-Agent string into browser, engine, OS and device details.. Call with "operation" plus "input" (and "o…
Generate harmony, shade and tint palettes from a base HEX color.. Operations: "generate" — Generate harmony, shade and tint palettes from a base HEX color.. Call with "operation" plus "input" (and "op…
Analyze a password and estimate its entropy, strength and crack time.. Operations: "analyze" — Analyze a password and estimate its entropy, strength and crack time.. Call with "operation" plus "input"…
Query a JSON document with a JSONPath expression.. Operations: "query" — Evaluate a JSONPath expression against a JSON document.. Call with "operation" plus "input" (and "options" where relevant).
Generate a time-based one-time password (TOTP) from a base32 secret.. Operations: "generate" — Generate the current TOTP code for a base32 secret.. Call with "operation" plus "input" (and "options" wh…
Parse a data size and convert it to bytes plus decimal and binary units.. Operations: "convert" — Parse a data size and convert it to bytes, decimal and binary units.. Call with "operation" plus "inpu…
Look up MIME types by file extension or MIME type.. Operations: "lookup" — Search MIME types by extension or MIME type.. Call with "operation" plus "input" (and "options" where relevant).
Sort, reverse, deduplicate and clean up lines of text.. Operations: "process" — Sort, deduplicate and clean lines of text.. Call with "operation" plus "input" (and "options" where relevant).
Sign a JSON payload into a JWT with an HMAC secret.. Operations: "sign" — Sign a JSON payload into a JWT using an HMAC secret.. Call with "operation" plus "input" (and "options" where relevant).
Generate a lexicographically sortable ULID.. Operations: "generate" — Generate a new ULID.. Call with "operation" plus "input" (and "options" where relevant).
Escape and unescape strings for JSON, JS, HTML, URL and regex.. Operations: "escape" — Escape a string for the chosen context.; "unescape" — Unescape a string from the chosen context.. Call with "oper…
Convert text to and from character codes in several bases.. Operations: "to-codes" — Convert text to character codes.; "from-codes" — Convert character codes back to text.. Call with "operation" plus …
Convert between integers and Roman numerals.. Operations: "to-roman" — Convert an integer to a Roman numeral.; "from-roman" — Convert a Roman numeral to an integer.. Call with "operation" plus "input"…
Encrypt and decrypt text with AES-GCM using a password.. Operations: "encrypt" — Encrypt plaintext into base64 ciphertext with a password.; "decrypt" — Decrypt base64 ciphertext produced by the encryp…
Compare two JSON documents and report added, removed and changed values.. Operations: "diff" — Diff two JSON documents by path.. Call with "operation" plus "input" (and "options" where relevant).
Translate text to and from Morse code.. Operations: "encode" — Convert text to Morse code.; "decode" — Convert Morse code to text.. Call with "operation" plus "input" (and "options" where relevant).
Convert CSV or TSV rows into a Markdown table.. Operations: "generate" — Build a Markdown table from delimited rows.. Call with "operation" plus "input" (and "options" where relevant).
Sign a message with HMAC using a secret key and SHA-2 algorithm.. Operations: "sign" — Compute an HMAC signature for a message.. Call with "operation" plus "input" (and "options" where relevant).
Convert a numeric value between CSS units (px, rem, em, pt, pc, %).. Operations: "convert" — Convert a numeric value from one CSS unit to another.. Call with "operation" plus "input" (and "options" wh…
Convert between JSON and XML.. Operations: "to-xml" — Convert JSON to XML.; "to-json" — Convert XML to JSON.. Call with "operation" plus "input" (and "options" where relevant).
Break a string into per-character Unicode details.. Operations: "inspect" — Inspect each character of a string (code point, category, bytes).. Call with "operation" plus "input" (and "options" where r…
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How to use
Add to your Claude Desktop / Cursor / Cline MCP config:
{
"mcpServers": {
"net.programmes/developer-tools": {
"url": "https://programmes.net/mcp",
"transport": "streamable-http"
}
}
}