the402 x402 endpoint directory

Subscribe an email address to the Would Pay Again newsletter. Body: {"email": "you@example.com"}.

Locus public pay-per-use API

Find the prime factorization of an integer via trial division. Returns the list of prime factors (with repeats), a hum

Compress a string with Brotli (RFC 7932) and return it as base64. Brotli typically beats gzip by 15-25% on text - usef

Generate placeholder lorem ipsum text. Supports paragraphs or sentences mode with configurable counts. Uses a fixed vo

Convert text to Unicode Braille characters (Grade 1 / uncontracted) or decode Braille back to text. Supports letters,

Convert an integer (1-3999) to Roman numerals, or a Roman numeral back to an integer. Auto-detects direction.

Extract a value from JSON by dot/bracket path, e.g. "items[2].name".

Caesar-cipher a string. Default shift 13 (ROT13, self-inverse). Set shift for any rotation 1-25.

Convert a color between hex, RGB, and HSL. Accepts "#1a2b3c", "rgb(26,43,60)", or "hsl(210,40%,17%)".

Placeholder text. ?paragraphs=1..20 or ?words=1..2000.

Characters, words, sentences, paragraphs, average word length, reading time, and an LLM token estimate for any text.

An x402 payment decision brief for agents. It explains how to parse a 402 response, verify a payment receipt, check bu

Is a date a public holiday in a country (2-letter ISO code)? Returns the holiday name, its types, and the next upcomin

OptimAI Search: an agent-ready decentralized search API powered by OptimAI Network nodes. Ask a natural-language quest

Evaluate a US property address for parcel match, FEMA flood zone, flood proximity, taxing entities, school district, p

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each respon

Timezone intelligence — offsets, DST, transitions

Full temporal context — 15+ time systems

BitBooth Contract Honeypot Check: pay 0.001 USDC, get a yes/no honeypot signal for any Base mainnet ERC-20. Single eth

Normalize Japanese (JP) text to a canonical form: fullwidth↔halfwidth conversion, halfwidth-katakana folding, invisibl

Gas fee snapshot for Base (and Ethereum when configured): maxFeePerGas and maxPriorityFeePerGas in gwei. Use before su

Trending topics and breaking stories across tech, dev, science, business, culture, politics, and entertainment — aggre

Cheapest endpoint: liveness plus x402 payment pipeline check — Returns ok with the server time and whether this call w

NattSwap cross-chain swap quote (Li.Fi)

OpenAI-compatible text-to-speech endpoint (input, voice, response_format) for drop-in use with code already built agai

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each respon

Returns current token prices with FDV, liquidity, and 24h price change, quoted in **USD**, **ETH**, or **BTC**. ### Ru

Real-time GBLIN protocol state: NAV in USD, basket composition with dynamic weights, and Crash Shield status.

UK street-level crime statistics by postcode (Police UK).

Global cryptocurrency market statistics — total market cap, 24h volume, Bitcoin dominance, and active coin count as JS

Reloadpi — Order status and refund schema. Returns the fulfillment state machine, polling URL, and refund endpoint for

Munition Airport Search: x402-paid airport reference data search for AI agents. Pay 0.001 USDC to search airports by I

Real-time USD prices for any crypto asset — majors by symbol, any CoinGecko id, any token by chain:address. Aggregated

Searches 30M+ Hacker News stories and comments via the public Algolia HN index. Filter by type (story|comment|poll), a

Looks up ASN and geolocation for any IPv4 or IPv6 address: ASN number, ASN org, ISP, country, region, city, postal, la

Agent profile lookup. Returns trust score, component breakdown, feedback counts, and metadata for any ERC-8004 agent.

Current Crypto Fear & Greed Index (0-100) with its label (Extreme Fear → Extreme Greed), updated daily. A single marke

Single-fact: recommended Monero per-byte fee in piconero (also exposed per-kB for convenience).

Darrylbots paid research: Standard Stock Screen: Quality, Momentum, and Durable Execution

Reloadpi — List all countries where prepaid mobile top-ups are available

Single-fact: what does Ethereum mainnet gas cost RIGHT NOW? Returns the latest block’s base fee + blob base fee AND th

Parse and validate a cron expression — returns the next N run times as ISO timestamps in any IANA timezone. Cron sched

Quick pre-flight quality score: composite (0-100) + grade (A-F) + three framework sub-scores (PEEM, RAGAS, G-Eval) + v

SwapHunt — a crypto market-context toolkit for trading agents: live prices, market regime, volatility, sentiment, fund

Search GAMEMAXXING's video games and gaming knowledge base for game concepts across game design, game business, game c

Current DeFi protocol TVL in USD by DefiLlama slug.

Top DeFi lending/LP yields — project, chain, symbol, APY breakdown, TVL. Filter by project, chain, or stablecoin-only.

Locus public pay-per-use API

Address geocoding API for agents: geocode one U.S., Puerto Rico, or U.S. Island Areas address for $0.001 USDC through