{
"count": 50,
"tools": [
{
"index": 1,
"name": "dns_lookup",
"title": "DNS Lookup",
"description": "Use this when you need current public DNS records for a domain.",
"category": "Live Web Data",
"network": true,
"example": {
"domain": "example.com",
"type": "A"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/dns_lookup"
},
{
"index": 2,
"name": "rdap_domain_lookup",
"title": "RDAP Domain Lookup",
"description": "Use this when you need current domain registration data from the authoritative RDAP service.",
"category": "Live Web Data",
"network": true,
"example": {
"domain": "example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/rdap_domain_lookup"
},
{
"index": 3,
"name": "redirect_trace",
"title": "Redirect Trace",
"description": "Use this when you need the complete HTTPS redirect path and final response.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/redirect_trace"
},
{
"index": 4,
"name": "http_status_check",
"title": "HTTP Status Check",
"description": "Use this when you need the live status and latency of a public HTTPS URL.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/http_status_check"
},
{
"index": 5,
"name": "response_headers_inspect",
"title": "Response Headers Inspect",
"description": "Use this when you need normalized live response headers from a public HTTPS URL.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/response_headers_inspect"
},
{
"index": 6,
"name": "page_metadata_extract",
"title": "Page Metadata Extract",
"description": "Use this when you need title, description, canonical, robots, language, and social metadata from a live HTML page.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/page_metadata_extract"
},
{
"index": 7,
"name": "page_links_extract",
"title": "Page Links Extract",
"description": "Use this when you need deduplicated internal and external links from a live HTML page.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com",
"limit": 100
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/page_links_extract"
},
{
"index": 8,
"name": "structured_data_extract",
"title": "Structured Data Extract",
"description": "Use this when you need JSON-LD and supported microdata types from a live page.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/structured_data_extract"
},
{
"index": 9,
"name": "canonical_check",
"title": "Canonical Check",
"description": "Use this when you need to verify a page canonical against its final live URL.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/canonical_check"
},
{
"index": 10,
"name": "robots_fetch_analyze",
"title": "Robots Fetch Analyze",
"description": "Use this when you need the live robots.txt rules and sitemap declarations for a site.",
"category": "Live Web Data",
"network": true,
"example": {
"origin": "https://example.com",
"user_agent": "*"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/robots_fetch_analyze"
},
{
"index": 11,
"name": "sitemap_fetch_analyze",
"title": "Sitemap Fetch Analyze",
"description": "Use this when you need to inspect a live XML sitemap or sitemap index.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://freetoolboxes.com/sitemap.xml",
"limit": 1000
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/sitemap_fetch_analyze"
},
{
"index": 12,
"name": "url_indexability_check",
"title": "URL Indexability Check",
"description": "Use this when you need a live technical assessment of whether a URL is crawlable and indexable.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/url_indexability_check"
},
{
"index": 13,
"name": "security_headers_audit",
"title": "Security Headers Audit",
"description": "Use this when you need a focused audit of important HTTP security headers on a live URL.",
"category": "Live Web Data",
"network": true,
"example": {
"url": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/security_headers_audit"
},
{
"index": 14,
"name": "well_known_discover",
"title": "Well-Known Discover",
"description": "Use this when you need to find standard machine-readable discovery documents on a public site.",
"category": "Live Web Data",
"network": true,
"example": {
"origin": "https://example.com"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/well_known_discover"
},
{
"index": 15,
"name": "currency_convert_current",
"title": "Currency Convert Current",
"description": "Use this when you need a current, source-attributed currency conversion using ECB reference rates.",
"category": "Live Web Data",
"network": true,
"example": {
"amount": 100,
"from": "USD",
"to": "EUR"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/currency_convert_current"
},
{
"index": 16,
"name": "exchange_rates_list",
"title": "Exchange Rates List",
"description": "Use this when you need the current currencies and EUR reference rates published by the ECB.",
"category": "Live Web Data",
"network": true,
"example": {},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/exchange_rates_list"
},
{
"index": 17,
"name": "json_validate",
"title": "JSON Validate",
"description": "Use this when you need exact JSON syntax validation and the top-level value type.",
"category": "Structured Data",
"network": false,
"example": {
"text": "{\"ok\":true}"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/json_validate"
},
{
"index": 18,
"name": "json_format",
"title": "JSON Format",
"description": "Use this when you need deterministic JSON formatting or minification.",
"category": "Structured Data",
"network": false,
"example": {
"text": "{\"b\":2,\"a\":1}",
"indent": 2,
"sort_keys": true
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/json_format"
},
{
"index": 19,
"name": "json_pointer_get",
"title": "JSON Pointer Get",
"description": "Use this when you need the exact value addressed by an RFC 6901 JSON Pointer.",
"category": "Structured Data",
"network": false,
"example": {
"document": {
"users": [
{
"name": "Ada"
}
]
},
"pointer": "/users/0/name"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/json_pointer_get"
},
{
"index": 20,
"name": "json_patch_apply",
"title": "JSON Patch Apply",
"description": "Use this when you need to safely apply RFC 6902 operations to a JSON document.",
"category": "Structured Data",
"network": false,
"example": {
"document": {
"name": "old"
},
"patch": [
{
"op": "replace",
"path": "/name",
"value": "new"
}
]
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/json_patch_apply"
},
{
"index": 21,
"name": "json_diff",
"title": "JSON Diff",
"description": "Use this when you need deterministic RFC 6902 operations that transform one JSON value into another.",
"category": "Structured Data",
"network": false,
"example": {
"before": {
"a": 1
},
"after": {
"a": 2
}
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/json_diff"
},
{
"index": 22,
"name": "json_schema_validate",
"title": "JSON Schema Validate",
"description": "Use this when you need local JSON Schema validation without fetching remote references.",
"category": "Structured Data",
"network": false,
"example": {
"schema": {
"type": "object",
"required": [
"id"
]
},
"data": {
"id": 1
}
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/json_schema_validate"
},
{
"index": 23,
"name": "openapi_validate",
"title": "OpenAPI Validate",
"description": "Use this when you need structural validation of an OpenAPI 3.x document without resolving remote references.",
"category": "Structured Data",
"network": false,
"example": {
"document": {
"openapi": "3.1.0",
"info": {
"title": "Example",
"version": "1.0.0"
},
"paths": {}
}
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/openapi_validate"
},
{
"index": 24,
"name": "yaml_to_json",
"title": "YAML to JSON",
"description": "Use this when you need safe YAML converted to structured JSON.",
"category": "Structured Data",
"network": false,
"example": {
"yaml": "name: Ada\nactive: true"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/yaml_to_json"
},
{
"index": 25,
"name": "json_to_yaml",
"title": "JSON to YAML",
"description": "Use this when you need a JSON value serialized as deterministic YAML.",
"category": "Structured Data",
"network": false,
"example": {
"value": {
"name": "Ada",
"active": true
}
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/json_to_yaml"
},
{
"index": 26,
"name": "csv_to_json",
"title": "CSV to JSON",
"description": "Use this when you need quoted CSV parsed into JSON rows with explicit size limits.",
"category": "Structured Data",
"network": false,
"example": {
"csv": "name,age\nAda,36",
"headers": true
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/csv_to_json"
},
{
"index": 27,
"name": "json_to_csv",
"title": "JSON to CSV",
"description": "Use this when you need an array of flat JSON objects serialized as standards-compatible CSV.",
"category": "Structured Data",
"network": false,
"example": {
"rows": [
{
"name": "Ada",
"age": 36
}
]
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/json_to_csv"
},
{
"index": 28,
"name": "xml_format",
"title": "XML Format",
"description": "Use this when you need XML syntax checked and deterministically formatted without DTD or entities.",
"category": "Structured Data",
"network": false,
"example": {
"xml": "- 1
",
"indent": 2
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/xml_format"
},
{
"index": 29,
"name": "xml_to_json",
"title": "XML to JSON",
"description": "Use this when you need XML converted to JSON while blocking DTD and entity expansion attacks.",
"category": "Structured Data",
"network": false,
"example": {
"xml": "- 1
"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/xml_to_json"
},
{
"index": 30,
"name": "query_string_parse",
"title": "Query String Parse",
"description": "Use this when you need a URL query string parsed with duplicate values preserved.",
"category": "Structured Data",
"network": false,
"example": {
"query": "a=1&a=2&name=Ada"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/query_string_parse"
},
{
"index": 31,
"name": "query_string_build",
"title": "Query String Build",
"description": "Use this when you need deterministic URL query encoding from scalar or array values.",
"category": "Structured Data",
"network": false,
"example": {
"parameters": {
"a": [
1,
2
],
"name": "Ada"
}
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/query_string_build"
},
{
"index": 32,
"name": "text_diff",
"title": "Text Diff",
"description": "Use this when you need an exact line-level difference between two bounded text values.",
"category": "Structured Data",
"network": false,
"example": {
"before": "one\ntwo",
"after": "one\nthree"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/text_diff"
},
{
"index": 33,
"name": "regex_test",
"title": "Regex Test",
"description": "Use this when you need safe RE2-compatible matching without catastrophic backtracking or backreferences.",
"category": "Exact Utilities",
"network": false,
"example": {
"pattern": "[A-Z][a-z]+",
"text": "Hello world",
"flags": "gu"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/regex_test"
},
{
"index": 34,
"name": "semver_compare",
"title": "SemVer Compare",
"description": "Use this when you need exact Semantic Version precedence comparison.",
"category": "Exact Utilities",
"network": false,
"example": {
"a": "1.2.3",
"b": "2.0.0"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/semver_compare"
},
{
"index": 35,
"name": "semver_satisfies",
"title": "SemVer Satisfies",
"description": "Use this when you need to test a Semantic Version against a range.",
"category": "Exact Utilities",
"network": false,
"example": {
"version": "1.5.0",
"range": "^1.2.0"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/semver_satisfies"
},
{
"index": 36,
"name": "cron_describe",
"title": "Cron Describe",
"description": "Use this when you need an exact field-by-field explanation of a cron expression.",
"category": "Exact Utilities",
"network": false,
"example": {
"expression": "0 9 * * 1-5"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/cron_describe"
},
{
"index": 37,
"name": "cron_next_runs",
"title": "Cron Next Runs",
"description": "Use this when you need deterministic upcoming times for a cron expression in an IANA time zone.",
"category": "Exact Utilities",
"network": false,
"example": {
"expression": "0 9 * * 1-5",
"timezone": "America/New_York",
"count": 5
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/cron_next_runs"
},
{
"index": 38,
"name": "timestamp_convert",
"title": "Timestamp Convert",
"description": "Use this when you need an ISO date, Unix seconds, and Unix milliseconds for the same instant.",
"category": "Exact Utilities",
"network": false,
"example": {
"value": 1704067200,
"unit": "seconds"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/timestamp_convert"
},
{
"index": 39,
"name": "timezone_convert",
"title": "Timezone Convert",
"description": "Use this when you need one instant represented in a specific IANA time zone.",
"category": "Exact Utilities",
"network": false,
"example": {
"datetime": "2026-08-21T14:00:00Z",
"timezone": "America/New_York"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/timezone_convert"
},
{
"index": 40,
"name": "date_difference",
"title": "Date Difference",
"description": "Use this when you need the exact elapsed duration between two instants.",
"category": "Exact Utilities",
"network": false,
"example": {
"start": "2026-01-01T00:00:00Z",
"end": "2026-01-02T12:00:00Z"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/date_difference"
},
{
"index": 41,
"name": "duration_parse",
"title": "Duration Parse",
"description": "Use this when you need an ISO or human duration normalized to exact units.",
"category": "Exact Utilities",
"network": false,
"example": {
"duration": "2h 30m"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/duration_parse"
},
{
"index": 42,
"name": "unit_convert",
"title": "Unit Convert",
"description": "Use this when you need an exact conversion among supported length, mass, volume, data, speed, angle, or temperature units.",
"category": "Exact Utilities",
"network": false,
"example": {
"value": 10,
"from": "km",
"to": "mi"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/unit_convert"
},
{
"index": 43,
"name": "hash_digest",
"title": "Hash Digest",
"description": "Use this when you need a cryptographic digest of UTF-8 text using a Web Crypto algorithm.",
"category": "Exact Utilities",
"network": false,
"example": {
"text": "hello",
"algorithm": "SHA-256",
"encoding": "hex"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/hash_digest"
},
{
"index": 44,
"name": "uuid_generate",
"title": "UUID Generate",
"description": "Use this when you need one or more cryptographically random UUID version 4 identifiers.",
"category": "Exact Utilities",
"network": false,
"example": {
"count": 3
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/uuid_generate"
},
{
"index": 45,
"name": "jwt_decode",
"title": "JWT Decode",
"description": "Use this when you need to inspect JWT header and payload claims without verifying its signature.",
"category": "Exact Utilities",
"network": false,
"example": {
"token": "eyJhbGciOiJub25lIn0.eyJzdWIiOiIxMjMifQ."
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/jwt_decode"
},
{
"index": 46,
"name": "jwt_expiry_check",
"title": "JWT Expiry Check",
"description": "Use this when you need to inspect exp, nbf, and iat timing without verifying the JWT signature.",
"category": "Exact Utilities",
"network": false,
"example": {
"token": "eyJhbGciOiJub25lIn0.eyJleHAiOjQxMDI0NDQ4MDB9."
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/jwt_expiry_check"
},
{
"index": 47,
"name": "base64_encode",
"title": "Base64 Encode",
"description": "Use this when you need UTF-8 text encoded as standard or URL-safe Base64.",
"category": "Exact Utilities",
"network": false,
"example": {
"text": "hello",
"url_safe": false
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/base64_encode"
},
{
"index": 48,
"name": "base64_decode",
"title": "Base64 Decode",
"description": "Use this when you need Base64 decoded to UTF-8 text with invalid UTF-8 reported.",
"category": "Exact Utilities",
"network": false,
"example": {
"base64": "aGVsbG8="
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/base64_decode"
},
{
"index": 49,
"name": "text_chunk",
"title": "Text Chunk",
"description": "Use this when you need deterministic bounded text chunks with optional overlap for downstream AI processing.",
"category": "Exact Utilities",
"network": false,
"example": {
"text": "one two three four",
"max_size": 2,
"overlap": 1,
"unit": "words"
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/text_chunk"
},
{
"index": 50,
"name": "redact_sensitive_data",
"title": "Redact Sensitive Data",
"description": "Use this when you need common secrets and personal identifiers replaced before further processing.",
"category": "Exact Utilities",
"network": false,
"example": {
"text": "Email ada@example.com and token sk-abcdefghijklmnopqrstuvwxyz",
"categories": [
"email",
"api_key"
]
},
"endpoint": "https://api.freetoolboxes.com/api/v1/tools/redact_sensitive_data"
}
]
}