Minify / prettify JSON. Minify JSON to its smallest form or pretty-print it with chosen indentation.

Pick JSON paths. Extract only the listed dot-notation paths from a JSON object - trim big API responses down to what you need.

JSON repair + schema check. Fix broken JSON (trailing commas, single quotes, unquoted keys, truncation, markdown fences) and optionally validate the result against a JSON Schema you supply. Built for cleaning up LLM tool output before it hits your pipeline.

Sort JSON keys. Recursively sort all object keys alphabetically - canonical JSON for diffing, hashing and version control.

JSON to CSV. Convert a JSON array of objects into CSV text, with column ordering and custom delimiter.

Unflatten dot-notation JSON. Rebuild a nested JSON object from flat dot-notation keys: {'a.b':1} becomes {a:{b:1}}.

JWT decode (no verification). Decode a JSON Web Token's header and payload for inspection - shows claims, expiry, issuer. Does NOT verify the signature.

Keccak-256 hash (Ethereum). Compute the Keccak-256 hash used across Ethereum - event topics, storage slots, content addressing. Accepts UTF-8 text or 0x-hex input.

Land area converter. Convert land area between hectares, acres, square meters - and South Asian units: kanal, marla, bigha, guntha. Real-estate and farm math.

String similarity (Levenshtein). Compute edit distance and similarity percentage between two strings - fuzzy matching, deduplication, typo detection.

Lighten / darken color. Lighten or darken a hex color by a percentage; also generates a 5-step tint/shade scale.

Liquidation price calculator. The collateral price at which a loan gets liquidated, from collateral amount, debt and liquidation threshold - DeFi borrowing risk.

Loan payment calculator. Compute the monthly payment, total paid and total interest for an amortized loan - mortgages, car loans, business credit.

Lorem ipsum generator. Generate placeholder lorem ipsum text by word, sentence or paragraph count - deterministic with a seed if you need repeatability.

Margin and markup calculator. Convert between cost, price, profit margin and markup percentage - solve for whichever is missing.

Page -> clean Markdown. Extract the readable article from a public URL (or raw HTML) and return it as clean Markdown with title and byline. Reader-mode for agents: strips nav, ads and boilerplate. For heavily JavaScript-rendered pages, render first (slot A1) or pass the rendered HTML here.

JSON to Markdown table. Turn a JSON array of objects into a formatted Markdown table - reports, GitHub issues, agent summaries.

MD5 hash. Compute the MD5 hash of text - legacy checksums and cache keys (not for security).

Merkle root builder. Build a merkle root from leaf hashes with sorted-pair hashing (OpenZeppelin style) - airdrop lists, allowlists, commitments.

Merkle proof verifier. Verify a merkle proof (sorted-pair/OpenZeppelin style): leaf + proof path + root, true or false.

Geographic midpoint. The geographic midpoint between two lat/lon coordinates along the great circle.

MIME type lookup. Look up the MIME content type for a file extension, or the common extension for a MIME type - uploads, headers, storage metadata.

Moon phase. The moon phase for any date: phase name, illumination percent and age in days - pure astronomy.

NDJSON ↔ JSON array. Convert between newline-delimited JSON (JSONL/NDJSON) and a JSON array, both directions - log files and streaming exports.

Notary - signed timestamped receipts. Proof for the agent economy: submit content (or just its sha256) and receive an Ed25519-signed, timestamped receipt proving that exact content existed at that moment. Nothing is stored - we hash and sign. Verification is FREE for anyone, forever, at POST /machines/verify-receipt (or offline with the embedded public key). Tool receipts, not zero-knowledge: the trust primitive agents actually use.

Net present value (NPV). Compute the net present value of a series of cash flows at a discount rate - project and investment appraisal.

Number to words. Spell out a number in English words - invoices, checks, legal documents. Supports up to trillions and decimals.

OG / social card generator. Turn a title into a polished 1200x630 social preview card (Open Graph / Twitter) as PNG or JPEG: title, subtitle, footer badge, dark or light theme, custom accent color. Rendered by a real browser, fully offline - built for agents publishing links that need to look intentional.

Ohm's law + power calculator. Give any two of voltage, current, resistance, power - get the other two (V=IR, P=VI). Electronics and electrical work.

Password generator. Generate cryptographically secure random passwords with length and character-class options, ambiguous-character exclusion, and entropy report.

Password strength checker. Score a password 0-100 with entropy estimate, character-class analysis and crack-time estimate. Sent password is not stored.

Payback period. How long until an investment pays itself back from a series of cash inflows, with fractional-year precision.

PDF -> text. Read a PDF and return its text: full document plus per-page, with page count. Accepts a public URL (up to ~3 MB) or base64 bytes (up to ~1 MB). Text-based PDFs only - scanned images need OCR, which is a different machine.

Pearson square feed mixing. Classic Pearson square: what ratio of two feeds hits a target nutrient percentage - protein blending for rations and premixes.

Percentage calculator. All percentage math in one machine: X% of Y, what percent X is of Y, and percentage change between two values.

PnL calculator (spot + leverage). Profit and loss for a long or short position with optional leverage: absolute PnL, return percent, ROE and liquidation-adjacent metrics.

Position size calculator. Risk-based position sizing: account size, risk percent, entry and stop-loss - how many units to buy. Trading risk management.

Prime checker + factorization. Test if a number is prime and return its full prime factorization.

QR code generator. Generate a QR code as PNG or SVG from any text: links, wallet addresses, wifi credentials, tickets. Sizes 64-2048px, selectable error-correction level.

Quadratic equation solver. Solve ax² + bx + c = 0: real or complex roots, discriminant and vertex.

Random integers. Generate cryptographically fair random integers in a range, with optional unique (no-repeat) mode - draws, sampling, testing.

Random token generator. Generate cryptographically secure random tokens in hex or base64url - API keys, session tokens, nonces.

Simplify ratio / fraction. Reduce a ratio or fraction to lowest terms using GCD, with decimal equivalent.

Remove accents / diacritics. Strip accents and diacritical marks from text, converting to plain ASCII-friendly characters.

Screenshot / PDF renderer. Render any public URL, or raw HTML you provide, into a PNG/JPEG screenshot or a PDF using a real headless browser. Useful when an agent needs pixels: previews, archives, visual checks, reports.

RGB to hex. Convert RGB values (0-255) to a hex color string.

RLP decode. Decode Ethereum RLP hex into its nested structure of hex values.

RLP encode. Encode values or nested lists into Ethereum RLP hex - transactions, tries, CREATE derivation.

ROI calculator. Compute return on investment: total ROI percent, absolute gain and annualized return (CAGR) if years given.

Roman numerals converter. Convert between integers and Roman numerals in both directions (1-3999).