Hex encode or decode text. mode: encode (default) or decode.

Strip all HTML tags and return plain text. Preserves block-level structure (paragraphs and headings become newline-separated). hiddenContent reports text a reader cannot see (HTML comments, display:none or hidden elements, white-on-white or off-screen text, zero-width characters) and quotes any of it that reads as an instruction to an AI; send hidden: "drop" to leave it out of the text. Faster and more predictable than running extract on a raw HTML string when you already have it.

Tamper-evident history of changes to a namespace - a hash-chained audit log the server attests to (provenance an agent can't forge for itself). Entries are kept for a bounded window (see retention in the answer), and an entry naming a key or document that was later deleted is redacted while still linking the chain.

Convert an HTML fragment or document you already have into clean markdown. hiddenContent reports text a reader cannot see (HTML comments, display:none or hidden elements, white-on-white or off-screen text, zero-width characters) and quotes any of it that reads as an instruction to an AI; send hidden: "drop" to leave it out of the markdown. (To fetch + convert a live URL, use /api/extract.)

Convert between a JSON array and JSONL/NDJSON (one JSON object per line). mode: to-jsonl (array → lines) or from-jsonl (lines → array). For streaming records to and from agents and datasets.

Compute the internal rate of return (IRR) of a cashflow stream - the discount rate at which NPV = 0. Index 0 is treated as t=0 (typically the negative initial investment); indices 1..n are inflows in subsequent periods. Solved via Newton-Raphson with bisection fallback. Requires at least one positive and one negative cashflow (otherwise IRR is undefined). Multiple sign changes in the cashflows can produce multiple IRR roots - we return the first one found.

List the wallets you've granted access to your namespace, with their mode and expiry.

Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)

Delete a remembered document by id from the recall store.

Revoke a previously granted wallet's access to your namespace.

Format a number: thousands separators, fixed decimals, optional currency, or compact (1.2K / 3.4M).

Compute the net present value of a stream of cashflows at a given discount rate. Index 0 is treated as t=0 (today, not discounted); indices 1..n are discounted by (1+rate)^t. Matches Excel's NPV but with the conventional t=0 treatment most finance textbooks use (Excel itself starts discounting at t=1 - see notes). Use for capital-budgeting decisions: positive NPV = creates value at the discount rate; negative = destroys value.

Flatten an OpenAPI 3.x or Swagger 2.x spec into a structured list of callable endpoints - one row per operation with method, path, operationId, summary, tags, parameters (name / in / required / type), JSON-body flag, and documented response codes. Includes per-method and per-tag counts so an agent can pick what to call next without parsing the full spec. Output is sorted by path then method for stable, agent-friendly grouping. Pure CPU - deterministic, no network, no $ref dereferencing.

Shrink an OpenAPI 3.x or Swagger 2.x document for LLM context by stripping verbose meta-fields (examples, descriptions, summaries, tags, externalDocs, deprecated). Categories are explicit; default is `["examples", "descriptions"]`. User-defined property names under `properties: { ... }` are protected - only the meta-field `example` keyword inside a property schema is removed, not a user property literally named "example".

Resolve authentication requirements across an OpenAPI 3.x or Swagger 2.x document. Returns the catalog of security schemes (`components.securitySchemes` in OpenAPI 3, `securityDefinitions` in Swagger 2) verbatim, the document-level default, and the *effective* security for each operation after layering.

Convert a value between units of length, mass, temperature, volume, area, speed, time, data, pressure, energy, power, angle, frequency - every unit the retired convert-* endpoints handled (e.g. miles, kilometers, kilograms, pounds, stones, us-gallons, liters, fahrenheit, psi, bar, kilopascals, kilowatt-hours, joules, btu, horsepower, and imperial Russian versts, sazhens, arshins, poods and funts).

Compute Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, and Automated Readability Index from text. Returns all 4 scores plus word, sentence, and syllable counts.

Open interest for one perpetual in coins and USD notional with its share of the venue total, or the top N contracts ranked by open interest plus the venue total. Use it when an agent needs positioning size for a market or a leaderboard of where leverage is concentrated right now.

Parse a URL query string into an object, or build one from an object. mode: parse (default) | build.

Score a password's strength: character-set size, entropy bits, a 0–4 rating, and an estimated offline crack time. The password is never stored or logged.