All projects on Base

SociaVault API proxy — twitter-user-tweets-all. Query/body matches https://docs.sociavault.com/api-reference/openapi.json. GET/POST per route; x402 per call. $0.014 USDC per request.

Kaspa mining economics from public Kaspa node snapshots (api.kaspa.org): KAS + USD revenue per TH/s/day, block subsidy measured live from coinbase payloads, DAG-aware emission rate, electricity-cost model with profit margin and breakeven price. Informational research data — not investment advice.

Takes two documents, by URL, inline base64 or raw text, extracts the text of each and compares them. Paragraphs are the unit: the answer lists every block that was removed, added, or kept but reworded, and for reworded blocks it names the individual words that went and came, so a single changed number in a long clause is visible instead of the whole clause being flagged. Alongside the content diff

Scheduled market-moving events for the next 7 days by default (?days= up to 90): US data releases with release times (CPI, jobs, GDP, PCE, PPI), FOMC, ECB and Bank of Japan decisions, Treasury auctions and dated crypto and regulatory milestones, each with importance 1-3 and official source. Use before any trade or scheduled action to know what is on the calendar. From official schedules, refreshed

VAT (IVA) rates for 17 Latin American countries, including Argentina, Chile, Colombia, Mexico, Peru (IGV) and the Dominican Republic (ITBIS): standard and reduced rates, plus net-to-gross or gross-to-net calculation. Reviewed dataset with source and review date; Brazil is excluded because it has no single rate. Use when pricing, quoting or invoicing in Latin America and you need the local VAT rate

UGC product video prompt: the compiled prompt and render plan for a 5s 9:16 casual spot on seedance-1.5-pro

Bulk web search — run up to 5 search queries in one paid call and get ranked results per query (title, URL, snippet, relevance score) as clean JSON. Same news, finance, date-range, country and domain filters as single web search, applied to every query. One payment instead of five for research fan-out, multi-query RAG retrieval and agent planning.

Web research in one call: ask a question and get a short cited answer, summarize a topic or get a Wikipedia summary. Returns a 1-3 sentence answer, key points tied to source ids, and the sources used (typically 1-5: title, URL, publisher, date, supporting quote), confidence and a free permalink. Sources: Wikipedia first, plus web pages, Stack Overflow, GitHub, papers, docs. Example: "What is the M

Batch text-to-speech: synthesize up to 20 separate text items in a single call, standard voices only, up to 500 total characters, returns JSON with base64 WAV audio plus duration and sample rate per item. Use it to: voice a list of short UI strings at once, generate audio for multiple notification templates, batch-produce voice lines for a menu or form, synthesize several short replies in one requ

Smart-money bundle in one call for any US-listed company by stock ticker or CIK: insider trades (Form 4), institutional 13F-HR holdings, and recent 8-K material events together. Track what executives and hedge funds are doing — buys, sells, portfolio positions, and corporate events. Resolves ticker to CIK via SEC's official index. Sourced live from data.sec.gov.

Ysaere Agent Page Extract — $0.02 USDC, no account needed. Input: {"url":"https://ysaere.com","max_chars"?:12000}. Fetches that public https page and returns clean readable text, title, meta description, headings, word_count, and a v2:sha512: content_hash in this response. Failed fetches refused before payment. Wallet only. No account price.

URL safety verdict: follows the redirect chain, detects homograph and punycode hostname tricks, and cross-references the destination host against the URLhaus threat feed. Returns safe, suspicious or malicious with reasons. Single-URL scope; domain-wide grading is /sitegrade and registration facts are /domain-intel.

Free tier: 25 calls/day per IP with header X-Free-Call: 1 (or ?free=1), then pay per call. Rule-based prompt-injection screen for untrusted text such as scraped web pages, emails and tool output. JSON body {text} (max 50,000 chars). Detects instruction-override phrasing, role-spoofing tags, data-leak links and hidden Unicode in 6 languages. Returns verdict safe, suspicious or malicious, a 0-100 sc

Archive coverage for a coin's liquidations over a window (≤7 days): which archived hours hold liquidations and where the gaps are. Warms the cache for everyone after. Priced floor ($0.001) + $0.05 per archived hour examined.

Locus public pay-per-use API

A task marketplace for agents. POST {spec, reward_credits} escrows the reward and lists the task; GET lists open bounties, GET ?id=X reads one task (any state) incl. its full spec. Workers claim (/bounty/claim), submit results (/bounty/submit); the poster approves (/bounty/approve) and the worker is credited minus a 20% house fee. TO POST: hold reward_credits credits first (POST /credits/buy, $0.0

Locus public pay-per-use API

Automaton-Sovereign Value API call

Signed time-bounded witness of an agent-carried payload digest; the payload stays with the agent

A LIVE, sourced snapshot of x402 adoption across the public ecosystem: how many pay-per-call services are indexed, on which networks and assets, in which categories, and at what USD price points (min/median/mean/max). Aggregated live from 402index.io, the Coinbase CDP Bazaar and the PayAI Bazaar; every figure carries its source URL and a fetchedAt timestamp. No fabrication - down sources report nu

News Gurus Intel API — per-symbol conviction: 50 latest signals from 42 generators merged into bullish/bearish counts. Example NVDA: 12 signals, 8 bullish, 3 bearish, avg confidence 0.61, each typed (options_flow, dark_pool, congressional, technical). The only x402 API selling derived US-equity signals rather than raw quotes. Flagship read for 'what does the evidence say about TICKER right now'. E

Business Frameworks · business-frameworks/risk/decide/hurdle@1.3, applied — POST the long-bond yield and two or three comparable asset betas; get r for this business — its cost of capital, the discount rate — with the sub-$5M probability rule and the concentrated owner's stated premium applied. Deterministic (the node's rule, no model): returns figures, verdict, action and check with the 170-token

Use when you need callable agent services for a capability across protocols: x402 listings ranked by relevance weighted by 30-day paying wallets, plus hosted MCP servers from the Official MCP Registry (a capped subset, count in coverage; those naming x402, L402, MPP or pay-per-call first; that registry publishes no prices). L402 and MPP listings are not covered. ?q= required. $0.002 USDC per call.

Use to extract the main article or document text from a single-page URL. Not for homepages or hubs (Web Index Cleaner) and not a link inventory (Link Extractor). Server HTML only; JavaScript is not run. Output is text or markdown. If the requested extract has no main content, the other profile is tried once in the same request. The HTTP body has correlation_id and data. The item array is data.resu

Resolves a provider id (api_football, sportradar, opta, entain, espn) or canonical machina URN to the entity it identifies, with all cross-provider ids attached.

Call before trusting or paying a third-party x402 seller: catalog-vs-live integrity -- verify an x402 listing (payee, price, network, service, tags, bazaar block) against the live 402; an endpoint preflight for x402 catalog vs live offers, seller trust and listing consistency so an agent can skip dead or mismatched endpoints (JSON).

POST any JSON payload to any webhook URL with custom headers and method. Let your agent trigger downstream systems in one call. Pay per call with USDC (x402) or credits - archtools.dev

Keyless web search for agents: pass a query, get a concise web-grounded answer plus the top source results (title, URL, snippet). Live web access, no API key or account needed. JSON response. $0.008 USDC per call, pay via x402, no API key.

Historical crypto price on a specific date — price, market cap and 24h volume snapshot for any coin by CoinGecko id, in USD or more.

Spot Check. REQUIRES ?host= on the paid request — a signed request without it is refused before the gate and no money moves. Name a host and get what this observatory already holds on it, signed: corpus rounds and verdicts as recorded, when we last actually knocked, our coverage of the window since we met it, and the gaps with their reasons. Read from the books at the counter — no request is made