Connection check
verified live · 26h ago
setkernel-developer-tools
65+ free in-browser developer tools (JSON, Base64, JWT, hash, regex…) callable over MCP.
Tools
59
GitHub stars
—
Installs / wk
—
Licence
—
Transport
streamable-http
Last checked
26h ago
Tools & capabilities
59 toolsRead from the running server on 26h ago.
aes-encrypt
input*optionsoperation*
Encrypt and decrypt text with AES-GCM using a password.. Operations: "encrypt" — Encrypt plaintext into base64 ciphertext with a password.; "decrypt" — Decrypt base64 ciphertext pr… 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).
ascii
input*optionsoperation*
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 wi… 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).
base64
input*optionsoperation*
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 for… 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).
bcrypt
input*optionsoperation*
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 wit… 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).
case
input*optionsoperation*
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 on… 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).
char-inspector
input*optionsoperation*
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" (a… 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).
chmod
input*optionsoperation*
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… 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).
cidr
input*optionsoperation*
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 "operat… 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).
color
input*optionsoperation*
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… 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).
color-palette
input*optionsoperation*
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" p… 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).
contrast
input*optionsoperation*
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 w… 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).
cron
input*optionsoperation*
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… 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).
css-minify
input*optionsoperation*
Minify or beautify CSS.. Operations: "minify" — Minify CSS (strip comments and whitespace).; "beautify" — Beautify CSS (one declaration per line, indented).. Call with "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).
css-units
input*optionsoperation*
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 "inpu… 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).
curl-converter
input*optionsoperation*
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 "opti… 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).
data-size
input*optionsoperation*
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 "o… 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).
diff
input*optionsoperation*
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 in… 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).
gitignore
input*optionsoperation*
Generate a combined .gitignore from template keys.. Operations: "generate" — Combine one or more template keys into a .gitignore.; "templates" — List the available .gitignore templ… 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).
hash
input*optionsoperation*
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 wit… 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).
hmac
input*optionsoperation*
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" w… 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).
html
input*optionsoperation*
Format, minify and validate HTML.. Operations: "format" — Pretty-print HTML.; "minify" — Minify HTML (strip comments and collapse whitespace).; "validate" — Check HTML for unclosed… 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).
html-entity
input*optionsoperation*
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 "oper… 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).
http-status
input*optionsoperation*
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 "op… 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).
image-base64
input*optionsoperation*
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"… 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).
json
input*optionsoperation*
Format, minify, validate and convert JSON.. Operations: "format" — Pretty-print JSON with a configurable indent.; "minify" — Strip all insignificant whitespace from JSON.; "validat… 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).
json-csv
input*optionsoperation*
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" (an… 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).
json-diff
input*optionsoperation*
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" w… 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).
jsonpath
input*optionsoperation*
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"… 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).
json-schema
input*optionsoperation*
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 rele… 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).
json-ts
input*optionsoperation*
Generate TypeScript type declarations from a JSON sample.. Operations: "generate" — Infer TypeScript interfaces/types from JSON.. Call with "operation" plus "input" (and "options"… 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).
json-xml
input*optionsoperation*
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). 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).
jwt
input*optionsoperation*
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 "op… 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).
jwt-encode
input*optionsoperation*
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" wh… 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).
lorem
input*optionsoperation*
Generate placeholder text in several styles.. Operations: "generate" — Generate lorem ipsum (or themed) placeholder text.. Call with "operation" plus "input" (and "options" where r… Generate placeholder text in several styles.. Operations: "generate" — Generate lorem ipsum (or themed) placeholder text.. Call with "operation" plus "input" (and "options" where relevant).
markdown
input*optionsoperation*
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 Ma… 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).
markdown-table
input*optionsoperation*
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 releva… 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).
mime
input*optionsoperation*
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 rel… 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).
morse-code
input*optionsoperation*
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… 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).
number-base
input*optionsoperation*
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 "op… 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).
password
input*optionsoperation*
Generate strong random passwords and estimate their strength.. Operations: "generate" — Generate a cryptographically random password.; "strength" — Estimate the entropy and strengt… 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).
password-strength
input*optionsoperation*
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 "ope… 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).
random
input*optionsoperation*
Generate cryptographically secure random strings.. Operations: "generate" — Generate a secure random string from a chosen pattern.. Call with "operation" plus "input" (and "options… 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).
regex
input*optionsoperation*
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.. C… 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).
roman-numeral
input*optionsoperation*
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 "ope… 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).
slugify
input*optionsoperation*
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). 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).
sort-lines
input*optionsoperation*
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… 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).
sql
input*optionsoperation*
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 "optio… 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).
string-escape
input*optionsoperation*
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 conte… 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).
timestamp
input*optionsoperation*
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/ti… 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).
totp
input*optionsoperation*
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 "inpu… 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).
ulid
input*optionsoperation*
Generate a lexicographically sortable ULID.. Operations: "generate" — Generate a new ULID.. 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).
url
input*optionsoperation*
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"… 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).
url-encode
input*optionsoperation*
Percent-encode and decode URL strings.. Operations: "encode" — Percent-encode a string.; "decode" — Decode a percent-encoded string.. Call with "operation" plus "input" (and "optio… 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).
user-agent
input*optionsoperation*
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"… 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).
uuid
input*optionsoperation*
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 versio… 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).
wifi-qr
input*optionsoperation*
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" plu… 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).
word-count
input*optionsoperation*
Count words/characters and compute readability statistics.. Operations: "count" — Compute basic text statistics (words, characters, sentences, etc.).; "readability" — Compute reada… 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).
xml
input*optionsoperation*
Pretty-print or minify already-serialized XML, and highlight it.. Operations: "format" — Pretty-print XML with the chosen indent (server-safe string transform).; "minify" — Collaps… 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).
yaml-json
input*optionsoperation*