Web answer

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://agent402.tools

• POST/api/dedupe-lines—No price listedRemove duplicate lines, preserving first-seen order. Returns the deduped text and how many were removed. Also on x402 Bazaar
• GET/api/lorem-ipsum—No price listed
• POST/api/memory/recall—No price listedRecall remembered text by similarity to a query (ranked by cosine similarity), not by exact key. Returns the top-k matches with scores. The retrieval half of the wallet-scoped semantic memory. Also on x402 Bazaar
• POST/v1/images/fast—No price listedGenerate an image from a text prompt at a flat price per picture, no token math and no subscription: the OpenAI images request shape in, base64 PNG or JPEG out, with an automatic fallback model so a provider outage does not become your error. Use it when an agent needs a picture cheaply and predictably. Also on x402 Bazaar
• GET/api/chain/total-supply—No price listedThe circulating total supply of an ERC-20, read from the token contract itself rather than from an aggregator, so it is the number the chain holds at the block you asked for. Returns the raw uint256 and the same figure formatted with the token's own decimals. A contract that does not implement totalSupply answers 422 rather than a fabricated zero. EVM chains: ethereum, base, polygon, arbitrum, optimism. Also on x402 Bazaar
• POST/api/tech-stack—No price listedDetect the technology stack of a public website: CDN, web server, language/runtime, frontend framework (Next.js, Nuxt, SvelteKit, Remix, Astro, React, Vue, Angular), CMS (WordPress, Drupal, Ghost, Shopify, Wix, Squarespace, Webflow), analytics (GA, GTM, PostHog, Mixpanel, Segment, Hotjar, Plausible, Fathom), and payments (Stripe, PayPal). Signature-based; no third-party API. Also on x402 Bazaar
• POST/api/skill/user-onboarding—No price listedTake a signup form submission and run the full onboarding workup deterministically: validate the email, score the chosen password, mint a stable internal ID, derive a URL-safe handle from the display name, generate a recovery / API secret, hash the password for storage, and verify the 2FA setup code. One pass, every step a pure-CPU call. Also on x402 Bazaar
• POST/api/seller-dossier—No price listedEverything Agent402 knows about one x402 seller origin, in one read: identity and crawl history, the catalog with the provenance of every price (live-402 or manifest, when it was read, whether it is stale or disagrees with the seller's own declaration), advertised wallets against the wallets that were actually paid (own chain evidence, inherited wallets, shared claims), settlement evidence per source (our Base leaderboard, the x402 Bazaar discovery index, Solana SPL credits, MPP transfers), the. Also on x402 Bazaar
• POST/api/audio-normalize—No price listedLoudness-normalize any audio/video URL to a target LUFS with ffmpeg's loudnorm (EBU R128) and return MP3 - consistent levels for podcasts, clips, and TTS output. Body: {"url":"https://…/audio.wav","targetLufs":-16?}. Also on x402 Bazaar
• GET/api/options-chain—No price listed
• GET/api/treasury-yield-curve—No price listedLatest US Treasury daily constant-maturity yield curve in one object: recordDate plus mo1, mo3, mo6, yr1, yr2, yr3, yr5, yr7, yr10, yr20 and yr30, each a yield in percent. Source: FRED DGS* series (St. Louis Fed), public domain. No params - always returns the most recent published curve, which trails today by a business day or two; for a date range use treasury-yield-history. Also on x402 Bazaar
• POST/api/embed-large—No price listedGenerate a text embedding vector using OpenAI text-embedding-3-large (3072 dimensions). Higher accuracy than the small model. Ideal for semantic search, RAG, and clustering. No API key needed; pay per call via x402. Text capped at 32k chars. Also on x402 Bazaar
• GET/api/edgar-13f-holdings—No price listedTop holdings from an institutional investment manager's most recent 13F-HR filing (managers >$100M AUM file quarterly). Parses the standard SEC informationtable.xml attached to the filing - returns issuer, CUSIP, shares, USD value, and voting authority for each position. Sorted by USD value, descending. Source: data.sec.gov + filing archive. Also on x402 Bazaar
• POST/api/token-balances—No price listedERC-20 balances of one wallet for a NAMED list of token contracts (1-20) - the targeted complement to the full-portfolio wallet-balance tool. One balance read for the whole list plus symbol/decimals per contract (cached an hour server-side), so 'how much USDC and WETH does this wallet hold on Base?' is a single cheap call with exact decimal strings, not a portfolio dump. Also on x402 Bazaar
• POST/v1/premium/messages—No price listedAnthropic Messages API over x402 - point the Anthropic SDK (or Claude Code / the Agent SDK) at base_url https://agent402.tools/v1/premium and pay $0.50 per call in USDC, no API key, no signup. Same models, caps and price as this tier's /chat/completions route; any model here is served through the Messages wire (Claude natively, others translated). Depth: `effort` (low..max) on Claude 4.7+, thinking.budget_tokens on older Claude. Also on x402 Bazaar
• POST/api/transcribe—No price listedTranscribe audio to text with the gpt-transcribe model. Provide a URL to an audio file (mp3, wav, m4a, etc.) and get back the transcript. Add diarize:true for speaker labels, word timestamps and a language confidence score (the scribe-v2 model, same price). No API key needed; pay per call via x402. Max 4 minutes of audio, 25 MB file size; /api/transcribe-pro takes the same models to 10 minutes. Also on x402 Bazaar
• GET/api/federal-awards—No price listedSearch US federal contract awards via USAspending.gov by keyword: recipient, award amount, awarding agency, and description - largest awards first. Live gov data, no key. Also on x402 Bazaar
• POST/api/polymarket-search—No price listed
• GET/api/x402-market-pulse—No price listedLive cross-provider x402 market sentiment. topProviders: the top x402 sellers ecosystem-wide, ranked by REAL on-chain activity (Agent402 included and flagged isSelf:true). Pick the lens with sort: 'usd' (revenue, default - whale-skewable), 'buyers' (distinct paying wallets - broadest adoption/reach), or 'calls' (raw volume). Every row carries all metrics plus callsPerBuyer (intensity), so revenue and actual ecosystem usage are both visible. Also on x402 Bazaar
• POST/api/skill/url-inspector—No price listedQuick URL health and metadata check - parse the URL structure, verify reachability, and pull page metadata in one pass. URL inspector skill pack: one x402 payment runs 3 underlying tools (url-parse, http-check, meta); partial-success per step. Also on x402 Bazaar
• POST/api/business-days—No price listedCount business days (Mon–Fri) between two dates, inclusive of the start, exclusive of the end. Optional list of holiday dates to skip. Also on x402 Bazaar
• GET/api/weather-alerts—No price listedActive National Weather Service alerts for a US state as clean JSON: event, severity, headline, affected areas, onset/expiry. Live government data, no key. Also on x402 Bazaar
• POST/api/ip-info—No price listedClassify an IP address: version, public/private/loopback/link-local, integer form, and reverse-DNS (PTR) lookup. Also on x402 Bazaar
• POST/api/mev-block-payment—No price listedLook up the MEV-Boost payment for a specific slot or block number from a major MEV-Boost relay's public data API. Returns the builder, proposer, value paid in ETH, gas usage, and tx count. Returns found=false if the block was built locally or via a different MEV-Boost relay (this relay is one of several). Also on x402 Bazaar
• POST/api/contract-inspect—No price listed

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 25 of 691 listed endpoints. Next endpoints First endpoints