FastX402

Status of a transaction on Base or Ethereum: success, failed, pending or not found, with block, confirmations, sender, recipient and gas used. Use it to confirm a payment or a contract call went through.

Current gas price, base fee and priority fee (in gwei) on Base or Ethereum, from the latest block. Use it to price a transaction or decide when to send one.

Resolve an ENS name (vitalik.eth) or a Basename (jesse.base.eth) to its wallet address, read live from the chain. Use it before sending funds to a human-readable name.

SOL and USDC balance of any Solana wallet, read live from the chain. Use it before sending funds, to check a payment arrived, or to watch a wallet.

Status of a Solana transaction by signature: success, failed or not found, with slot and confirmation level. Use it to confirm a payment or program call went through.

Decimals and total supply of an SPL token mint on Solana (USDC, USDT, memecoins), read live from the chain. Use it to check a token before trading, paying or displaying amounts.

Turn a JSON object into formatted XML (keys starting with @_ become attributes). Use it to build XML payloads, feeds or sitemaps from data.

Convert Markdown (GitHub-flavored: tables, task lists, fenced code) to HTML. Use it to publish text an agent wrote as a web page, email or CMS entry.

Explain a cron expression in plain words ('At 09:00, Monday through Friday') in English, Turkish, German, French or Spanish. Use it to show schedules to people or check a cron line before saving it.

Convert any CSS color (hex, rgb(), hsl(), oklch(), named colors) to hex, rgb, hsl and OKLCH, with alpha. Use it for design tokens, themes and accessible palettes.

Generate an evenly spaced color scale between two CSS colors in OKLCH, Lab or RGB space, as hex values. Use it for charts, heatmaps, gradients and theme shades.

Compare two texts line by line and return a unified diff (patch format) plus counts of added and removed lines. Use it to show what changed between two versions of a document, config or code.

Convert a value between units of length, mass, temperature, volume, area, speed, time, digital storage, energy, pressure and more (km to mi, C to F, kg to lb, GB to MB). Use it whenever numbers come in the wrong unit.

Turn a JSON array of objects into CSV with a header row and correct quoting (commas, quotes, line breaks). Use it to hand data to spreadsheets, Excel or databases.

Parse an IPv4 or IPv6 address and classify it (private, loopback, link-local, multicast, carrier-grade NAT, reserved, unicast...), with the normalized form and the IPv4 inside IPv4-mapped IPv6. Use it to vet IPs from logs, headers or user input.

Escapes a literal string for safe insertion into a regular expression, with an optional target flavor such as JavaScript, Python, or PCRE. Use it when constructing patterns from user-provided or generated text.

Maps a filename extension or filename to its standard MIME type and returns the normalized extension. Use it when generating upload metadata, HTTP headers, or file manifests.

Resolves a country and postal code to its matching places, regions, and geographic coordinates. Use it to validate or enrich location fields without handling personal address data.

Write a number out in Turkish and English words (1234.56 → bin iki yüz otuz dört virgül elli altı / one thousand two hundred thirty-four point fifty-six), plus amount-in-words for Turkish lira and US dollars. Use it for invoices, cheques, contracts and receipts.

Escapes a string for safe insertion into HTML or XML text and attribute contexts. Use it when generated content must preserve characters without manual entity handling.

Parses newline-delimited JSON and returns the decoded records with precise line-level errors for malformed input. Use it to inspect or transform JSONL data without writing a parser.

Fetches a concise Wikipedia page summary, including the title, extract, description, and canonical URL. Use it for quick public background on a topic without searching the web manually.

Convert vehicle plates into lookup URLs, localized expiry dates, or regional format checks.

Strictly validates an email address against the RFC 5322 grammar and reports the local, domain, and tag parts. Use when a basic regex check is not enough and you need full spec compliance.

Validates a SEPA BIC code, extracts the country, city, and branch, and flags whether it is an 8- or 11-character form. Use when handling European payment instructions.

Returns the ECB reference rate for one base currency against one quote currency, plus the rate date. Use for precise FX conversions between major currencies.

Returns ECB EUR reference rates for a date range and currency pair.

Returns the latest version, description, license, and download count for a Rust crate, useful for checking crate details.

Fetches Python package metadata from PyPI including latest version, author, license, dependencies, and download stats. Use to check package versions or verify dependencies.

Converts hex color codes to their nearest named color equivalent (CSS/X11 names). Returns the closest match with distance metric.

Returns the UTC offset for any timezone at a specific date, accounting for DST transitions. Useful for scheduling and time arithmetic.

Returns all published versions of a Rust crate with release dates and yanked status. Use when you need version history or to check if a specific version exists.

Extracts all color values from CSS text and returns them deduplicated with usage count and format (hex, rgb, hsl). Useful for design audits.

Flattens nested JSON into dot-notation keys or unflattens back to nested structure. Returns transformed JSON with optional delimiter choice.

Parses .env file format into JSON key-value pairs, handling quoted values, comments, and multiline strings. Useful for config validation and migration.

Add or subtract duration from an RFC3339 timestamp and return the result in RFC3339 format. Useful for calculating future or past dates with precision.

Check whether an IP address (v4 or v6) falls within a given CIDR range. Returns boolean match and the normalized CIDR.

Extracts all tables from HTML and returns them as structured JSON arrays. Use when you need to parse tabular data from scraped HTML or documentation.

Applies RFC 7386 JSON Merge Patch to a target document and returns the result. Use for partial updates to configuration or API payloads.

Converts between Arabic numbers (1-3999) and Roman numerals in both directions. Use for document formatting, historical references, or outline numbering.

Extracts all meta tags from HTML including charset, viewport, description, keywords, and custom properties. Returns structured JSON with tag names, attributes, and content values.

Split a Markdown file into its YAML front matter (as JSON) and the body. Handles Windows line endings and files without front matter. Use it to read blog posts, docs and notes with metadata.

List the dates from a start day to an end day by day, week or month (end included when it lands exactly), optionally skipping weekends. Use it to build schedules, billing calendars and report axes.

Next semantic version after a major, minor, patch or prerelease bump, using npm's exact rules for versions that already have a prerelease tag. Use it for release scripts and changelog tooling.

Test one IPv4 or IPv6 address against a list of CIDR ranges and return which ranges contain it. Use it for allowlists, blocklists and firewall rule checks.

Query and reshape JSON with JMESPath (the query language of the AWS CLI): pick fields, filter arrays, project lists. Use it to pull exactly what you need out of a large API response.

Apply an RFC 6902 JSON Patch (add, remove, replace, move, copy, test) to a JSON document and return the result. A failing test or a bad path is reported, not half-applied.

Convert HTML (articles, emails, web pages) to clean Markdown: headings, links, lists, tables, code. Use it to give an LLM page content in a compact, readable form.

Turn natural-language dates into exact timestamps (next friday at 5pm, in 3 days, from 9am to 11am tomorrow), relative to a reference time and a UTC offset you give. Use it to understand dates people write.

Create a calendar invite file (.ics, iCalendar) for an event: title, UTC start, duration, location, description, link. Works with Google Calendar, Outlook and Apple Calendar. Use it to send meeting invites from an agent.