All projects on Base matching “category”

529 withdrawal & rollover checker — is THIS withdrawal qualified? K-12 (OBBBA $20k cap from 2026 + expanded categories), postsecondary credentialing, SECURE 2.0 Roth rollovers (15-yr/5-yr/earned-income/$35k gates computed), student-loan cap, non-qualified tax + 10% penalty math with exception routing — plus the California non-conformity traps (K-12, credentialing and 529→Roth are ALL CA-taxable +

DeFi TVL from DefiLlama: top protocols filtered by category and chain (TVL, 1d/7d change, market cap, chains), chain TVL rankings with protocol counts, or one protocol with per-chain TVL split and 90 days of daily TVL history.

Market-level summary of the x402 agent economy from the full Bazaar catalogue: total services and endpoints, 30-day paid calls, estimated USDC volume, demand by category, network mix and the top 15 services. Testnet and self-test listings are excluded. Use this for the big picture in one call; for a full ranked list use x402-services, to find a specific API use x402-search.

Whether a number is on WhatsApp and, if so: personal or business account, about text, country, linked devices and whether it runs on the Cloud API. Businesses add their public profile: name, description, categories, email, websites, address, coordinates, hours, join date and Facebook page. No photo; /v1/profile/full adds it. Query param: phone, with country code (e.g. +14155552671). Every answer i

Live scored geopolitical threat feed: name, category, severity, coordinates, and source URL for every active tracked threat.

Published fact-checked episodes, newest first, with optional filters by category slug, show id or speaker slug. Paged.

Research an ecommerce store, online business, or ecommerce market using current public sources. Returns store analysis, categories, positioning, pricing patterns, offers, policies, competitors, market research, and citations.

Startup/SaaS/AI-tool launch directories re-checked live Oct 2026, filtered by category and free option. Each row: live status, submit URL, free/badge/queue/paid, lowest price, account needed, captcha, Tranco rank. Up to 50 rows sorted by popularity.

Industrial metals prices with momentum signals, category analysis, and AI brief

eBay listings search — live prices, condition, shipping, seller reputation, auctions & Buy It Now across supported regional eBay sites, with category, price band, condition, seller & location filters, sorted, as clean JSON.

Generate ready-to-use 1200x630 Open Graph / social preview images from text for content, marketing, and publishing agents. Provide a title plus optional subtitle and category badge, pick a built-in theme (dark, light, midnight, forest, sunset), and receive a base64 PNG sized exactly for og:image and twitter:card. Pure server-side rendering with no external calls and no shell access.

8-K material-event alerts classified into categories an agent can act on: earnings, exec_change, material_agreement, acquisition_disposition, bankruptcy, delisting, cybersecurity, auditor_or_restatement, control_change, financing, restructuring_impairment, shareholder_vote, governance, reg_fd, other_events. Each event lists every item with its official label.

Monitor recent official Israeli company-registry changes for an exact nine-digit company number. Returns filing and status-change events newest first, with dates, deterministic categories, source URLs, and checked_at. Use for counterparty monitoring, supplier due diligence, onboarding refreshes, corporate-event alerts, and registry change detection. Coverage is approximately one year.

Summarize and classify a text (up to 4000 characters). POST a JSON body {"text": "..."}. The summary is written in the language of the input text. Categories: news, opinion, technical, commercial, other.

Aura machine-readable x402 Bazaar market snapshot: Base-USDC price distribution, category demand, freshness, newest listings

Complete list of all Bitcoin Core RPC methods (summaries). One call replaces up to 142 individual lookups. Returns name, category, summary, and parameter count for every method.

Verify a Canadian registered charity against the Canada Revenue Agency List of Charities. Look up by business number (BN, e.g. '119219814RR0001' or the 9-digit root) or by charity name (English or French). Returns legal name, BN, registered status verdict, designation (Charitable Organization / Public Foundation / Private Foundation), charity category, and mailing city/province. Data: CRA List of

x402 services ranked by 30-day on-chain settlement volume, optionally by category.

Find local businesses by city and category. Returns name, phone, address and verified website status (live/broken/none, https, last-checked date). 0.05 USDC per query.

Given an emoji character (or any string), return its code points and — if known — its name, category, shortcodes and tags. An unknown emoji is a successful result with `known:false`, not an error.

Verify an NYC Department of Consumer and Worker Protection (DCWP) business license by license number or business name. Returns license status, industry category, license type, expiration date, and business address. NYC-only coverage, active licenses only. Public-domain NYC Open Data.

Spend preflight for AI agents. Send the x402 PaymentRequired body (v1 or v2) you received, or a cart, plus optional rules (per-payment max, hold threshold, daily cap, allowlists, new-domain days, endpoint category price multiple, liveness and payTo changes). Returns allow|hold|block with reasons, the cheapest acceptable payment option, and a receipt id. Read-only: never signs, settles, or holds fu

Look up a physical constant by its key (e.g. "speed-of-light"), symbol (e.g. "c") or exact name. Returns the CODATA 2018 recommended value, unit, relative standard uncertainty (0 for values that are exact by SI definition) and category.

Detect whether a User-Agent belongs to a known bot, crawler, AI agent or HTTP tool, and if so return its name and category (search, social, seo, ai, monitoring, tool, …).

Return the full detected technology stack for a domain. Every technology is mapped to a category with a confidence score. Includes stack_sophistication, stack_gaps, and competing_vendors derived intelligence. Billed per domain profiled.

Full Instagram profile by username — bio, follower and following counts, posts count, verified and business account flags, category, contact email, external and bio links, profile picture, plus the first page of recent posts and a cursor for more. Instagram profile lookup, creator and influencer stats, follower count, social audience data. No API key.

Daily state of the x402 agent economy: observed USDC inflow, seller ranking, category demand, growth, and coverage. Reports its real observation window; concentration adjustment applied only when scan coverage supports it. A FREE register-wide change digest covering the same domain is market_digest on the x402-observatory gateway; buy this for the derived figures, not for what merely changed.

Given a Portuguese company NIF/NIPC, return official Portugal 2030 EU-funded project facts and evidence-based inferred investment and purchasing categories for company intelligence, sales research and procurement opportunity screening. Includes funding, rule-based confidence, provenance, snapshot freshness and a conservative commercial-opportunity assessment. Not confirmed purchase intent, open te

Look up any Ethereum address — returns entity labels, name tags, and categories from 412K+ labeled addresses. AI agent API for on-chain identity resolution

Any RSS, RSS/RDF or Atom feed parsed into one shape: title, link, ISO date, author, summary and categories. Pass since to poll for changes.