The same functions, for an agent.

What an agent may fetch

The pages on this site still run local tools in the browser. An agent call is different: the server runs the function. Tools that read a public URL fetch that URL from the server, with the same private-address block as the checker pages. Tools that only transform the arguments you send do not fetch anything.

• generate_llms_txtRender llms.txt and llms-full.txt from a site name, a summary, and a list of pages. It does not crawl. Grouping follows the page URLs. POST /api/v1/tools/llms-txt-generator
• score_ai_seoFetch a public page plus its robots.txt, sitemap, and llms.txt, then score how ready it is for AI search crawlers. Use this when you have a live URL. POST /api/v1/tools/ai-seo-checker
• build_open_graphRender one of the Open Graph templates as a PNG and a Next.js opengraph-image.tsx file. Pass a template id from list_og_templates, the fields that template uses, colors, a size, and optional base64 images. POST /api/v1/tools/og-image-generator
• list_og_templatesList Open Graph card templates with ids, names, categories, defaults, color presets, and field schemas. POST /api/v1/tools/og-template-list
• decode_jwtDecode a signed JSON Web Token into its header, payload, and registered claims. Dates are absolute ISO timestamps. The signature is not checked. POST /api/v1/tools/jwt-decoder
• check_robots_txtFetch a public robots.txt and report whether the wildcard group blocks the site and whether Sitemap lines are absolute. Use this when you have a URL, not a pasted file. POST /api/v1/tools/robots-txt-checker
• inspect_meta_tagsFetch one public HTML page and report title, description, canonical, Open Graph, Twitter, and JSON-LD. Use this to see what a live URL advertises. POST /api/v1/tools/meta-tags-inspector
• build_json_ldBuild schema.org JSON-LD for one type, plus a script tag and a list of missing fields. Use this when you already know the fields. It does not fetch a page. POST /api/v1/tools/schema-generator
• count_tokensCount tokens with the o200k or cl100k encoder and price the count against the published model table. Claude and Gemini rows are estimates, not those vendors' tokenizers. POST /api/v1/tools/ai-token-counter
• explain_cronTurn a cron expression into English, the next UTC run times, and snippets for crontab, GitHub Actions, Vercel, Kubernetes, and node-cron. POST /api/v1/tools/cron-expression-builder
• build_nextjs_dockerfileGenerate a production Dockerfile, dockerignore, compose file, and next.config snippet for a Next.js app. Defaults match a pnpm standalone image. POST /api/v1/tools/nextjs-dockerfile-generator
• format_jsonPretty-print or minify JSON. A number that does not fit in a JavaScript number keeps the digits you sent. Returns the formatted text when it is valid, or the line and column of each syntax error. POST /api/v1/tools/json-formatter
• convert_data_formatConvert between JSON, YAML, TOML, and XML. Auto-detects the source. Numbers that do not fit in a JavaScript number keep their digits. Errors include a line and column. TOML refuses null and a non-table root. POST /api/v1/tools/json-yaml-convert
• convert_csv_jsonConvert CSV to JSON or JSON to CSV. Supports comma, tab, semicolon, and pipe delimiters, an optional header, type inference, and dotted flattening. Inferred numbers that do not fit in a JavaScript number keep their digits. POST /api/v1/tools/csv-json-convert
• diff_textCompare two texts by line, word, or character, or compare JSON so object key order does not matter. Returns an inline diff, side-by-side rows for line and JSON modes, and a unified patch. POST /api/v1/tools/diff-checker
• base64_codecEncode UTF-8 text as Base64, or decode Base64 and data URIs. URL-safe output uses - and _ and omits padding. Decode reports the sniffed media type and whether the bytes are UTF-8 text. POST /api/v1/tools/base64-codec
• convert_imageConvert an image to JPEG, PNG, WebP, or AVIF. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the image as base64. HEIC is not decoded here. POST /api/v1/tools/image-convert
• compress_imageRe-encode an image at a quality from 1 to 100, optionally capping the longest edge. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the image as base64. POST /api/v1/tools/image-compress
• resize_imageResize an image by pixels or percent. Fit is contain, cover, or stretch. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the image as base64. POST /api/v1/tools/image-resize
• convert_colorConvert HEX, RGB, HSL, OKLCH, or CMYK into every format, name the nearest Tailwind token, and report the WCAG 2 contrast ratio against a background. POST /api/v1/tools/color-converter
• convert_unix_timestampConvert epoch seconds, milliseconds, microseconds, or nanoseconds to ISO-8601 and RFC 2822 in an IANA time zone, or convert a calendar time back to epoch. POST /api/v1/tools/unix-timestamp
• date_differenceCount calendar days, elapsed time, and business days between two dates. Business days skip weekends and any YYYY-MM-DD holidays you list. POST /api/v1/tools/date-difference
• hash_dataCompute MD5, SHA-1, SHA-256, and SHA-512 for UTF-8 text or base64 bytes. Pass hmacKey for HMAC and expected to see which digest matches. POST /api/v1/tools/hash-generator
• generate_uuidGenerate UUID version 4 or version 7 from cryptographic randomness, up to 10,000 at once, or inspect the version, variant, and v7 timestamp. POST /api/v1/tools/uuid-generator
• url_codecPercent-encode or decode text, or parse a URL into its host, path, hash, and query parameters. POST /api/v1/tools/url-codec
• generate_passwordGenerate cryptographic passwords or EFF-wordlist passphrases and report the entropy in bits. Randomness comes from the platform CSPRNG. POST /api/v1/tools/password-generator
• explain_chmodConvert an octal or symbolic file mode into octal, symbolic notation, and a chmod command, including setuid, setgid, and the sticky bit. POST /api/v1/tools/chmod-calculator
• merge_pdfCombine PDF files. Each file is base64 or a public URL, and can keep a page range such as 1-3,5. Private addresses are refused. Returns one PDF as base64. POST /api/v1/tools/pdf-merge
• split_pdfExtract a page range into one PDF, or split into single pages or chunks of N. Send base64 or a public URL. Private addresses are refused. Returns PDF base64 and a ZIP when there are several files. POST /api/v1/tools/pdf-split
• compress_pdfRecompress embedded images in a PDF. Presets are light, medium, and strong. Send base64 or a public URL. Private addresses are refused. An optional target size tries harder. Returns the PDF and the sizes before and after. POST /api/v1/tools/pdf-compress
• images_to_pdfTurn images, sent as base64 or public URLs in order, into one PDF. JPEG and PNG are embedded directly. Other formats are converted to PNG first. Page size is A4, Letter, or fit. Private addresses are refused. Returns the PDF as base64. POST /api/v1/tools/image-to-pdf
• generate_qr_codeBuild a static QR code for text, a URL, Wi-Fi, or a vCard. Returns the payload, an SVG string, and a PNG as base64. POST /api/v1/tools/qr-code-generator
• extract_pdf_textRead the selectable text layer of a PDF. Returns per-page text, markdown-style headings, and an o200k token count. Does not OCR scans. Send base64 or a public URL. Private addresses are refused. POST /api/v1/tools/pdf-to-text
• organize_pdfReorder, rotate, or drop PDF pages. Each entry names a 1-based source page and a rotation of 0, 90, 180, or 270. The same page may be listed twice. Send base64 or a public URL. Private addresses are refused. POST /api/v1/tools/pdf-rotate-organize
• render_pdf_pagesRender PDF pages to PNG or JPEG. DPI is 72 to 216. A page range such as 1-3,5 is optional. At most 24 pages and 25 MB of images. Send base64 or a public URL. Private addresses are refused. Returns image base64 and a ZIP when there is more than one page. POST /api/v1/tools/pdf-to-image
• protect_pdfProtect a PDF with AES-256, or unlock one when the password is known. action is protect or unlock. password is the user password. ownerPassword is optional. permissions cover printing, copying, modifying, annotating, filling forms, accessibility, and assembly. Send base64 or a public URL. Private addresses are refused. POST /api/v1/tools/pdf-protect-unlock
• convert_markdown_htmlConvert GitHub-flavored Markdown to HTML, or HTML to Markdown. to is html or markdown. sanitize strips scripts from the text output. The conversion does not fetch a URL. POST /api/v1/tools/markdown-html
• fetch_page_markdownFetch a public HTML page and return the article as Markdown, plus a title, excerpt, and o200k token count. Private and local addresses are refused. The response is capped at 800 KB. POST /api/v1/tools/html-to-markdown-url
• read_barcodeRead QR codes and barcodes from an image. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns each code's text and format. An image with no code returns an empty list. POST /api/v1/tools/qr-code-reader
• optimize_svgMinify an SVG with SVGO. Send markup or a file as base64 or a public URL. Private addresses are refused and the file is capped at 10 MB. The viewBox is kept unless removeViewBox is true. Returns the optimized markup and the byte counts. POST /api/v1/tools/svg-optimizer
• read_exifRead EXIF tags, including GPS, or strip them. action is read or strip. scope is all or gps. gps-only removal keeps the other JPEG tags. Other formats are re-encoded, which drops every tag. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. POST /api/v1/tools/exif-viewer-remover
• crop_imageCrop an image to a pixel box or a 0 to 1 ratio box. circle cuts a round mask. format is png, jpeg, or webp. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the image as base64. POST /api/v1/tools/image-crop
• generate_faviconBuild a favicon pack from an image or up to three letters. The ZIP contains favicon.ico, PNG sizes, a web manifest, an HTML snippet, and a Next.js metadata snippet. Letters are drawn with a built-in bitmap font so the result does not depend on a system font. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. POST /api/v1/tools/favicon-generator
• read_image_textExtract text from an image with Tesseract. language defaults to eng. Other codes in the list are fetched when first used. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the text and a confidence from 0 to 100. An image with no text returns an empty string. POST /api/v1/tools/ocr-image-to-text
• remove_backgroundRemove a solid or near-solid background by flood-filling from the border. color is an optional #rrggbb. The portrait model runs in the browser, not in this handler: MODNet is Apache-2.0, RMBG-1.4 is non-commercial, and the ONNX runtime is too large for the serverless function. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns a PNG as base64. POST /api/v1/tools/background-remover
• count_textCount words, code points, graphemes, sentences, and paragraphs, and compare the length with SEO and social limits. POST /api/v1/tools/word-counter
• convert_caseConvert text to camelCase, snake_case, kebab-case, CONSTANT_CASE, and AP or Chicago title case. Returns every style unless one is requested. POST /api/v1/tools/case-converter
• generate_fake_dataGenerate seeded lorem ipsum, or fake JSON, CSV, or SQL rows from a list of field types. POST /api/v1/tools/lorem-ipsum
• test_regexRun a JavaScript regular expression against a sample and return every match, capture group, a short explanation, and an optional replacement. POST /api/v1/tools/regex-tester
• format_sqlFormat SQL for PostgreSQL, MySQL, BigQuery, Snowflake, and other dialects. Choose keyword case and an indent of 2 or 4 spaces. POST /api/v1/tools/sql-formatter
• validate_json_schemaInfer a JSON Schema from a sample, or validate JSON against a schema. Returns error paths plus TypeScript and Zod generated from the sample. POST /api/v1/tools/json-schema-validate
• calculate_emiCalculate a reducing-balance loan installment and its amortization schedule. Money is rounded half up to cents. An optional extra monthly payment reduces principal. POST /api/v1/tools/loan-emi-calculator
• calculate_percentageCalculate percent of a value, what percent one number is of another, percent change, the reverse, an increase or decrease, and margin versus markup. POST /api/v1/tools/percentage-calculator
• convert_unitsConvert length, mass, volume, temperature, area, speed, time, and data size. Decimal bytes (kB, MB) and binary bytes (KiB, MiB) are separate categories. POST /api/v1/tools/unit-converter
• lookup_dnsQuery A, AAAA, MX, TXT, CNAME, and CAA for a public hostname over DNS-over-HTTPS, and parse SPF and DMARC. Private names are refused. The resolver is Cloudflare or Google. POST /api/v1/tools/dns-lookup
• calculate_cidrReturn the network, broadcast, host range, and host count for an IPv4 or IPv6 CIDR. Optionally test whether an address is inside it, split it, or merge it with other CIDRs. POST /api/v1/tools/ip-cidr-calculator
• hash_passwordHash a password with bcrypt or argon2id, or verify a hash. Returns an htpasswd line when a username is set. The password is not stored or logged. The page in the browser never sends the password; this call only hashes the arguments you send. POST /api/v1/tools/htpasswd-bcrypt
• generate_keypairGenerate an RSA, EC, or Ed25519 key pair as PEM and JWK, or convert between PEM and JWK. The private key is returned in the result and is not stored. The page in the browser generates keys locally and does not send them. POST /api/v1/tools/rsa-keypair
• build_cspBuild a Content-Security-Policy from directives, or lint an existing policy. Returns the header line, a Next.js headers() snippet, and warnings for unsafe sources. POST /api/v1/tools/csp-generator
• validate_sitemapValidate sitemap XML or a public sitemap URL, including a sitemap index and a sample of HTTP statuses. Or generate a urlset from a list of URLs. Private addresses are refused and responses are size-capped. POST /api/v1/tools/sitemap-validator
• check_http_headersFetch a public URL, follow redirects, and grade HSTS, Content-Security-Policy, framing, nosniff, and Referrer-Policy. Private addresses are refused. The body is not stored. POST /api/v1/tools/http-headers-checker
• check_sslConnect to a public host on port 443 and report certificate expiry, subject alternative names, protocol, and chain. Private addresses are refused. The handshake times out after 8 seconds. POST /api/v1/tools/ssl-checker
• generate_totpCompute RFC 4226/6238 one-time passcodes from a base32 secret. Supports 6/8 digits, SHA1/SHA256/SHA512, and custom periods. POST /api/v1/tools/totp-generator
• query_jsonpathEvaluate a JSONPath Plus query against a JSON document and return the matches with their paths. A number that does not fit in a JavaScript number is returned as its original digits, with a precision warning. POST /api/v1/tools/jsonpath-tester
• calculate_programmerEvaluate integer expressions with C-like precedence (hex/octal/binary literals, bitwise ops, shifts) and report base conversions plus signed/unsigned interpretations. POST /api/v1/tools/programmer-calculator
• aes_cryptAES-256-GCM encryption with PBKDF2-SHA256 key derivation. Encrypt returns a base64 bundle (salt, IV, ciphertext); decrypt reverses it. POST /api/v1/tools/aes-crypto
• analyze_harParse a HAR (HTTP Archive) capture and summarize it: request counts, status distribution, slowest and largest requests, top hosts, and per-request timings. POST /api/v1/tools/har-analyzer
• convert_json_to_typesInfer types from a JSON document and generate TypeScript interfaces, Zod schemas, Python Pydantic models or dataclasses, and Go structs. POST /api/v1/tools/json-to-types
• minify_codeMinify source code with Terser (JS), csso (CSS), or a structural HTML pass and report before/after byte counts. POST /api/v1/tools/code-minifier
• convert_curlParse a curl command and generate equivalent JavaScript fetch, Python requests, Go, PHP, or Rust code. POST /api/v1/tools/curl-converter
• execute_graphqlSend a GraphQL query with optional variables and headers to a public http or https endpoint on port 80 or 443 and return the response data or errors. Local, private, and internal addresses are refused. POST /api/v1/tools/graphql-client
• validate_websocket_urlValidate and parse a ws:// or wss:// URL into its components, and optionally decode a WebSocket close code. POST /api/v1/tools/websocket-tester
• generate_resumeBuild a resume PDF from profile, experience, education, and skills. A name plus at least one experience, education, or skills entry is required. Choose the clean, modern, or compact template. Returns the A4 PDF as base64. POST /api/v1/tools/resume-builder
• generate_invoiceBuild an invoice or quote PDF from company and client details, line items with quantities and rates, a tax rate, and an optional percent or flat discount. All money is computed in integer cents, so there are no float rounding errors. Returns the PDF as base64 plus the total. POST /api/v1/tools/invoice-generator
• sign_pdfStamp a PNG signature image onto one or more PDF pages at given positions (fractions of the page, x and y measured from the top-left, width as a fraction of page width). The signature keeps its aspect ratio. Returns the signed PDF as base64. POST /api/v1/tools/pdf-signature
• resize_social_imageCrop and resize an image to an exact social media preset: instagram-post (1080x1080), instagram-portrait (1080x1350), instagram-story (1080x1920), youtube-thumbnail (1280x720), x-post (1200x675), x-header (1500x500), linkedin-post (1200x627), or facebook-post (1200x630). The cover crop keeps the center subject. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the image as base64 PNG. POST /api/v1/tools/social-image-resizer
• trim_audioTrim a WAV audio file to a time range with optional fade in and out, returning a 16-bit PCM WAV as base64. Only WAV is accepted; the web UI handles MP3/OGG/M4A. POST /api/v1/tools/audio-trimmer
• convert_currencyConvert money between ISO 4217 currencies using live exchange rates from the Frankfurter API, fetched through the SSRF-safe outbound guard. Supports historical dates. POST /api/v1/tools/currency-converter
• generate_memeRender a classic top/bottom-caption meme as a PNG. Give it an image (base64, data URI, or public URL) or pick a gradient style, and it returns captioned meme artwork. POST /api/v1/tools/meme-generator
• zip_filesCreate a ZIP archive from files or list and extract the contents of a ZIP archive. Everything is handled in memory; no files are stored. POST /api/v1/tools/zip-tools
• make_collageArrange up to 9 photos into a collage layout (duo, trio, focus, quad, six, nine) with a gap and background color, and get back a square PNG. POST /api/v1/tools/photo-collage
• fill_pdf_formFill an interactive PDF form's text fields, checkboxes, dropdowns, and radios by field name, with an option to flatten the result. Pass inspectOnly to list the fields first. POST /api/v1/tools/pdf-form-filler