the402 x402 endpoint directory

Look up the domain's registration expiry via WHOIS and report the expiry date and days remaining. Use to catch domains

Resolve a DNS record (A by default) for the host and return the values. Use to confirm a domain resolves and to detect

Inspect the site's TLS/SSL certificate: whether it is currently valid and how many days remain until it expires. Use t

Fetch a URL and report whether it is reachable, the HTTP status code, and the response time in milliseconds. A fast li

One annual-account filing — Belgian or Finnish company financial statements. BE: the deposit as filed at the NBB CBSO

Belgian and Finnish company annual accounts — filings list for Belgium and Finland. BE: every published deposit refere

Insider transactions at Belgian and German listed companies — managers transactions (directors' dealings) under MAR Ar

Discover newly active Solana tokens ranked by genuine organic activity, filtered to exclude wash trading. Optionally f

Full analysis of a Solana token given its mint address — current price, liquidity, safety risk score, honeypot check,

JSON Web Token (JWT) decoder — parse an unverified compact JWS header and claims and evaluate advisory NumericDate tim

JSON Web Key (JWK) inspector — validate bounded public RSA, EC, or Ed25519 keys and calculate RFC 7638 SHA-256 thumbpr

File type and MIME/media type inspector — identify bounded content by magic bytes and return SHA-256, size, and extens

PKCS#10 certificate signing request (CSR) inspector — parse requested identities and public-key metadata, calculate a

X.509 TLS/SSL certificate inspector — parse fields and SANs, calculate a SHA-256 fingerprint, and check hostname and t

Timezone converter — resolve civil-time daylight-saving (DST) folds or gaps and convert one local time between IANA zo

RRULE recurrence expander — generate bounded RFC 5545 iCalendar occurrences in IANA timezones with windows, work limit

Time interval merger — sort, deduplicate, and combine overlapping or adjacent RFC 3339 date-time ranges.

Cron next-run calculator — generate future times for bounded five-field POSIX cron schedules in IANA timezones with ex

Meeting availability intersection — find maximal common free time slots across participant calendars within a bounded

Solana Program Derived Address (PDA) calculator — derive the canonical off-curve address and bump from bounded public

Keccak Merkle proof verifier — validate inclusion plus exact leaf index and count proof shape for the Atlas sorted-pai

Keccak Merkle tree and proof builder — generate indexed sorted-pair inclusion proofs with domain separation and explic

CREATE2 deterministic contract address calculator — derive the EIP-1014 EVM deployment address, preimage, hashes, and

EVM address checksum and validation tool — normalize one Ethereum-compatible address and validate mixed-case EIP-55 in

Solidity ABI calldata encoder — encode canonical typed values for an EVM smart-contract function call, with an optiona

Strict Solidity ABI calldata decoder — decode canonical EVM smart-contract function calls or typed values, verify sele

0/1 knapsack solver — exact work-bounded capacity planning and portfolio selection for maximum value, with determinist

Weighted interval scheduling solver — exact maximum-weight compatible job scheduling with half-open intervals and a co

Bin-packing heuristic — deterministic best-fit-decreasing capacity planning for placing items into bins, with feasibil

Assignment solver — exact minimum-cost worker-to-task matching for resource allocation, with deterministic choices and

Package vulnerability check — check one exact open-source dependency version or purl against OSV, enrich CVE matches w

Batch dependency vulnerability check — check ordered exact package versions in OSV with deduplicated CVE enrichment, e

Full Instagram profile by username — bio, follower and following counts, posts count, verified and business account fl

Page through an Instagram account's posts by username — captions, like and comment counts, media type, video duration,

SEC company financials by ticker — normalized annual and quarterly revenue, income, balance-sheet, cash-flow and EPS f

SEC filings by ticker — recent 10-K, 10-Q and 8-K records with official filing and document URLs.

SEC company identity by ticker — CIK, SIC, exchanges, fiscal year end and former names from official EDGAR data.

Flight search by departure and arrival airports in the URL — compare live itineraries, fares, schedules, stops and emi

Apple App Store reviews (path variant) — an app's user reviews by product_id in the URL: title, text, rating, version,

Apple App Store product details (path variant) — full profile for a single app by product_id in the URL: rating, price

Sample any single record in the OSF catalog for $0.001: the full JSON payload plus a provenance URL to the authoritati

Every ERC-20 + native ETH a Base address holds (Blockscout-indexed, spam-screened) with confidence-gated USD values: u

Analyst sentiment and short interest for a US stock in one call: recommendation trend, consensus price targets, recent

Latest news headlines and summaries for a stock ticker from real Yahoo Finance data. Includes article title, summary,

Transcribe a base64-encoded PCM WAV clip of at most 60 seconds into text. Input duration is verified before payment. U

Extract facts from supplied text into a caller-provided strict JSON Schema. Use for bounded text-to-JSON normalization

Safety and honeypot risk check for a Solana token given its mint address. Returns a deterministic risk score, honeypot

Search Telegram: channel discovery by topic plus indexed public posts

Decode a Solana transaction into structured instructions, program ids (named), accounts and a human summary. Accepts a

French company intelligence report for due diligence — ONE call, all blocks cross-referenced: identity, officers with