mcp server

developer-tools

65+ free in-browser developer tools (JSON, Base64, JWT, hash, regex…) callable over MCP.

Description as published by the maintainer. Source

• version 1.0.1
• active
• browser automation

active — Registry entry last updated 2026-07-13. Dashed tags are derived by ZBS Index from the published description, not stated by the maintainer.

What this server can do

59 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

aes-encrypt(input, options, operation)

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 encrypt operation.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

ascii(input, options, operation)

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 "input" (and "options" where relevant). Required: operation, input.

base64(input, options, operation)

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 text.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

bcrypt(input, options, operation)

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 "input" (and "options" where relevant). Required: operation, input.

case(input, options, operation)

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 "operation" plus "input" (and "options" where relevant). Required: operation, input.

char-inspector(input, options, operation)

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 relevant). Required: operation, input.

chmod(input, options, operation)

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 a symbolic permission string (e.g. "rwxr-xr-x") to octal.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

cidr(input, options, operation)

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" (and "options" where relevant). Required: operation, input.

color(input, options, operation)

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 with "operation" plus "input" (and "options" where relevant). Required: operation, input.

color-palette(input, options, operation)

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 "options" where relevant). Required: operation, input.

contrast(input, options, operation)

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 best contrast on a background.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

cron(input, options, operation)

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 expression.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

css-minify(input, options, operation)

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 "options" where relevant). Required: operation, input.

css-units(input, options, operation)

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" where relevant). Required: operation, input.

curl-converter(input, options, operation)

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). Required: operation, input.

data-size(input, options, operation)

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 "input" (and "options" where relevant). Required: operation, input.

diff(input, options, operation)

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 "operation" plus "input" (and "options" where relevant). Required: operation, input.

gitignore(input, options, operation)

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 "operation" plus "input" (and "options" where relevant). Required: operation, input.

hash(input, options, operation)

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 "input" (and "options" where relevant). Required: operation, input.

hmac(input, options, operation)

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). Required: operation, input.

html(input, options, operation)

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.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

html-entity(input, options, operation)

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" (and "options" where relevant). Required: operation, input.

http-status(input, options, operation)

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" (and "options" where relevant). Required: operation, input.

image-base64(input, options, operation)

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" where relevant). Required: operation, input.

json(input, options, operation)

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 the input is valid JSON, reporting the error location.; "repair" — Best-effort repair of common JSON mistakes (trailing commas, single quotes, unquoted keys).. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

json-csv(input, options, operation)

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 relevant). Required: operation, input.

json-diff(input, options, operation)

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). Required: operation, input.

json-schema(input, options, operation)

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). Required: operation, input.

json-ts(input, options, operation)

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). Required: operation, input.

json-xml(input, options, operation)

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). Required: operation, input.

jsonpath(input, options, operation)

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). Required: operation, input.

jwt(input, options, operation)

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 relevant). Required: operation, input.

jwt-encode(input, options, operation)

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). Required: operation, input.

lorem(input, options, 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). Required: operation, input.

markdown(input, options, operation)

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.; "stats" — Compute document statistics for Markdown/plain text.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

markdown-table(input, options, operation)

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). Required: operation, input.

mime(input, options, operation)

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). Required: operation, input.

morse-code(input, options, operation)

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). Required: operation, input.

number-base(input, options, operation)

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 relevant). Required: operation, input.

password(input, options, operation)

Generate strong random passwords and estimate their strength.. Operations: "generate" — Generate a cryptographically random password.; "strength" — Estimate the entropy and strength bucket of a password.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

password-strength(input, options, operation)

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" (and "options" where relevant). Required: operation, input.

random(input, options, operation)

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). Required: operation, input.

regex(input, options, operation)

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" plus "input" (and "options" where relevant). Required: operation, input.

roman-numeral(input, options, operation)

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" (and "options" where relevant). Required: operation, input.

slugify(input, options, operation)

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). Required: operation, input.

sort-lines(input, options, operation)

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). Required: operation, input.

sql(input, options, operation)

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). Required: operation, input.

string-escape(input, options, operation)

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 "operation" plus "input" (and "options" where relevant). Required: operation, input.

timestamp(input, options, operation)

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.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

totp(input, options, operation)

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" where relevant). Required: operation, input.

ulid(input, options, operation)

Generate a lexicographically sortable ULID.. Operations: "generate" — Generate a new ULID.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

url(input, options, operation)

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 (drop default ports, sort query params, strip trailing slash).. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

url-encode(input, options, operation)

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). Required: operation, input.

user-agent(input, options, operation)

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 "options" where relevant). Required: operation, input.

uuid(input, options, operation)

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 (where present) timestamp.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

wifi-qr(input, options, operation)

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 "options" where relevant). Required: operation, input.

word-count(input, options, operation)

Count words/characters and compute readability statistics.. Operations: "count" — Compute basic text statistics (words, characters, sentences, etc.).; "readability" — Compute readability scores (Flesch, SMOG, Coleman-Liau).; "keywords" — Compute keyword density for the text.. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

xml(input, options, operation)

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 XML tags (server-safe string transform).. Call with "operation" plus "input" (and "options" where relevant). Required: operation, input.

yaml-json(input, options, operation)

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). Required: operation, input.

Last successful function declaration observed on 2026-08-13. Source: https://programmes.net/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on 2026-08-13. Source: https://programmes.net/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Where to get it

• Repository — https://github.com/setkernel/programmes-net
• Remote endpoint (streamable-http) — https://programmes.net/mcp