the402 x402 endpoint directory

Parse an expression and return the free variables it references, without evaluating it — so an agent can discover whic

Evaluate a mathematical expression with optional named variables — arithmetic, comparison and logic operators plus fun

Decode a MessagePack or CBOR byte stream (supplied as a base64/base64url/hex string) back into a JSON value. A malform

Serialize a JSON value into a compact MessagePack or CBOR byte stream, returned as a base64 (default), base64url or he

Mint a signed JSON Web Token from a JSON claims object, using a shared secret (HS*) or a PEM private key (RS/ES/PS). S

Verify a JSON Web Token's signature and claims against a shared secret (HS*) or a PEM public key (RS/ES/PS). Returns {

Decode a JSON Web Token WITHOUT verifying its signature and return the header, payload and signature. A structurally m

Rebuild a nested object from a single-level object whose keys are delimited paths (default delimiter `.`) — the invers

Flatten a nested object/array into a single-level object whose keys are the delimited paths to each leaf (default deli

Deep-merge an ordered list of JSON documents, left to right. Objects are merged key-by-key; arrays, scalars and null i

Apply an RFC 6902 JSON Patch to a JSON document and return the result. An invalid or unresolvable patch (e.g. a failed

Compute the RFC 6902 JSON Patch that transforms `source` into `target`. The patch is a minimal array of add/remove/rep

Evaluate a JMESPath expression against a JSON value and return the selected/projected result. A malformed expression i

Parse a document (in any format) and re-emit it in the RFC 8785 JSON Canonicalization Scheme form — sorted keys, canon

Infer a JSON Schema (draft-07) from a sample document in any supported format. Types are inferred, present keys are ma

Sniff which structured format an unknown document is. Because formats overlap, returns every plausible format with a 0

Parse a document (json, json5, jsonc, yaml, xml, csv, tsv, toml, ndjson, ini, env, properties, plist or querystring) a

Transcode a document between json, json5, jsonc, yaml, xml, csv, tsv, toml, ndjson, ini, env, properties, plist and qu

Read the text out of a QR code or barcode in a PNG or JPEG image. Auto-detects QR, DataMatrix, PDF417, Aztec and 1D sy

Render a barcode (Code128, Code39, EAN-13/8, UPC-A/E, ITF-14, DataMatrix, PDF417) as SVG or PNG data URL.

Render text (URL, vCard, Wi-Fi config, …) as a QR code — SVG string or PNG data URL.

Validate a BIC/SWIFT code and decompose it into bank, country, location and branch codes.

Validate an IBAN (mod-97 checksum, length, country format) and decompose it into country, bank, branch and account par

Count the LLM tokens in text for a given model or encoding — exact for OpenAI and open models (Llama, Mistral, Qwen, G

Get weather observations (METAR) for a specific airport

Rerank passages by relevance to a query via Cloudflare Workers AI (@cf/baai/bge-reranker-base). Send {query, documents

Fetches a domain's home page and returns its declared icons, ranked, with the best-available logo first.

Validate email format, disposable-domain heuristics, and live DNS MX records via DoH for outreach and lead-gen agents

Total DeFi TVL for every chain DefiLlama tracks, ranked. Query: limit (1-500). Each: name, tvl_usd, token.

Mean SoilGrids sand fraction for the 0-5 cm layer. The service evaluates a 60 metre local analysis grid around one coo

Mean SoilGrids clay fraction for the 0-5 cm layer. The service evaluates a 60 metre local analysis grid around one coo

Mean SoilGrids pH in H2O for the 0-5 cm layer. The service evaluates a 60 metre local analysis grid around one coordin

Return the input text with every detected PII span replaced. `mode` controls the replacement: "label" (default) → `[EM

Find personally identifiable information in a text blob: emails, phone numbers, credit cards (Luhn-validated), IBANs (

Checks a proposed package name against a registry’s own naming rules (npm scoping and URL-safety, PEP 503 normalizatio

The HTS line for a US tariff code with its description, units of quantity and general, special and column 2 duty rates

Validate a US ABA routing number by its 3-7-1 check digit and decode its Federal Reserve district and institution clas

The UTC offset, abbreviation and DST state a zone was on at any moment from 1970, with the surrounding transitions, an

Moon phase, illuminated fraction, distance and UTC moonrise/moonset for a date and coordinate.

The sun's azimuth, elevation, shadow ratio and normal-facing panel angles at a coordinate and instant.

Civil, nautical and astronomical twilight boundaries plus golden and blue hour windows for a date and coordinate, in U

Structure and computed properties for a compound by name, CAS number, PubChem CID or SMILES: formula, weight, InChI, l

NCAP five-star crash ratings for a model year, make and model: overall, frontal, side and rollover, with recall, compl

Latest observation for a US coordinate: temperature, conditions, wind, humidity, pressure and visibility, from the nea

A CVE record from the National Vulnerability Database: description, CVSS severity and references.

Flatten arbitrarily nested JSON to a single-level object of dotted paths, or expand one back.

USDA texture class calculated from SoilGrids sand, silt and clay fractions. The coordinate is validated against the Na

USDA texture class calculated from SoilGrids sand, silt and clay fractions. The coordinate is validated against the Na

USDA texture class calculated from SoilGrids sand, silt and clay fractions. The coordinate is validated against the Na

USDA texture class calculated from SoilGrids sand, silt and clay fractions. The coordinate is validated against the Na