67 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Mint a signed JSON Web Token (HMAC: HS256 default, HS384, HS512) from a payload + secret. Pairs with jwt-decode/jwt-verify to complete the trio. Deterministic - same payload, secret, and alg always produce the same token...
Convert text between utf-8, base64, hex, URL-percent-encoding and ascii representations.
Check a UUID: send a string and get whether it is a valid UUID plus its version and variant. $0.001 USDC per call on Base.
Encode text to Morse code or decode it back. mode: encode (default) or decode. Words separated by ' / '.
Percent-encode or decode a string for URLs. mode: encode (default) or decode. component: true (default) uses encodeURIComponent semantics.
Base32 (RFC 4648) encode or decode text. mode: encode (default) or decode.
Base58 encode or decode text (Bitcoin/IPFS alphabet). mode: encode (default) or decode.
Base64 encode or decode text. mode: encode (default) or decode. Handles URL-safe base64 on decode.
Compress a string with Brotli (RFC 7932) and return it as base64. Brotli typically beats gzip by 15-25% on text - useful when bytes matter (e.g. cramming context into an LLM prompt, fitting under a transport cap). Slower...
CRC-32 checksum of a text string (hex), the IEEE polynomial used by zip/png/gzip.
Hex encode or decode text. mode: encode (default) or decode.
Encode text to HTML entities or decode them back. mode: encode (default) or decode.
Verify an HS256/384/512 JWT signature against a secret and check expiry. Returns valid + decoded payload. (HMAC algorithms only.)
Caesar-cipher a string. Default shift 13 (ROT13, self-inverse). Set shift for any rotation 1-25.
Hash text, strings, or UTF-8 payload data with SHA256, SHA384, or SHA512. Compute a cryptographic hash, checksum, or digest for payload integrity, content fingerprinting, cache keys, and verifying that data has not chang...
Asks the public x402 facilitators (CDP, x402.org, PayAI, x402.rs, Dexter, Daydreams, OpenX402, Mogami, Heurist) for GET /supported right now: whether each answers, its latency, and the x402 versions, schemes and networks...
Decode and checksum-verify a bech32 or bech32m string — Genesis402 / UnyKorn Operator Network
Decode a JWT's header and claims — WITHOUT verifying it — Genesis402 / UnyKorn Operator Network
Base64 and base64url encoding of text or bytes — Genesis402 / UnyKorn Operator Network
Percent-encode and decode a string for URLs — Genesis402 / UnyKorn Operator Network
Decode base64 or base64url to bytes and text — Genesis402 / UnyKorn Operator Network
Decode hex to text and other encodings — Genesis402 / UnyKorn Operator Network
Base58 encoding (Bitcoin alphabet) — Genesis402 / UnyKorn Operator Network
Encode/decode hex for $0.002 USDC for $0.002 USDC. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the s...