Off 2lp2cwhxyc2bm3ce x402 REST usage
A Base block's number, hash and time; the latest block when no number is given.
centralcity.ai · 98 listed services · provider site
A Base block's number, hash and time; the latest block when no number is given.
Encodes a text as Base64, or decodes Base64 back to its UTF-8 text.
Writes a JSON array of flat objects as CSV, with a header of every key.
Turns Markdown into plain text: link text kept, images and markup removed.
Checks the EIP-55 checksum of an address and answers its checksummed form.
Checks the EIP-55 checksum of an address and answers its checksummed form.
An address's balance of one ERC-20 token on Base, with the token's decimals and symbol.
The time between two dates: days, weeks, and calendar years, months and days.
Converts a number from 1 to 3999 to Roman numerals, or Roman numerals to the number.
Reads CSV (quoted fields as in RFC 4180) into JSON rows, at most 10000 rows.
How long a text takes to read: its words, minutes and seconds.
Turns a text into a URL slug: lower case ASCII letters and digits joined by hyphens.
Writes a text in another case: upper, lower, title, sentence, snake, kebab, camel or pascal.
Percent-encodes a text for a URL, or decodes a percent-encoded text.
Converts a value between two units of length, mass, volume or temperature.
Checks whether a text is valid JSON, and where it fails if not.
Counts the characters, words, lines and sentences of a text.
Base's gas prices now: the latest block's base fee, the next one's, and a priority fee.
Base's gas prices now: the latest block's base fee, the next one's, and a priority fee.
An address's balance of one ERC-20 token on Base, with the token's decimals and symbol.
Per column of a CSV text: its type, values, empty cells and distinct values; for numbers also min, max, mean, median and sum.
Per column of a CSV text: its type, values, empty cells and distinct values; for numbers also min, max, mean, median and sum.
Checks a JSON document against a JSON Schema (type, properties, required, items, enum, const, minimum, maximum, minLength, maxLength, pattern, additionalProperties).
Checks a JSON document against a JSON Schema (type, properties, required, items, enum, const, minimum, maximum, minLength, maxLength, pattern, additionalProperties).
Picks values out of a JSON document by a path such as items[*].price or a.b[0].c, at most 1000 matches.
Picks values out of a JSON document by a path such as items[*].price or a.b[0].c, at most 1000 matches.
Compares two texts line by line: a unified diff and how many lines were added, removed and kept.
Compares two texts line by line: a unified diff and how many lines were added, removed and kept.
The most frequent words and two-word phrases of a text, with counts and percentages; English stopwords left out by default.
The most frequent words and two-word phrases of a text, with counts and percentages; English stopwords left out by default.
Provider identity is derived from the domain or repository in the source record. If two vendors share a host, they appear together here — that is a limitation of the data, not a statement about ownership.