Every agent-payable API.

Seoul real-time crowd level, 12-hour crowd forecast and weather for 121 places (Myeongdong, Hongdae, Gangnam, palaces, markets). Travel, live. English, Japanese or Korean (lang=en|ja|ko)

Selects and fills a small declared dialogue template using a caller-supplied seed, NPC name, intent, tone, and facts. It produces a reproducible writing prompt, not model-generated prose, lore verification, localization, or a complete conversation system.

U.S. Healthcare Provider Lookup (NPI Registry). U.S. healthcare provider lookup in the CMS NPI Registry by NPI number, name, organization, state, city or specialty: credential, specialty, license, status, practice address and phone.

Validate an NPI number (checksum) and enrich via the CMS NPPES registry

npm package downloads, current version, and license — latest version, license, and last week's download count for an npm package. Parameter: ?name=<package> (e.g. express, or @scope/name for a scoped package).

npm package facts: latest version, license, weekly downloads, deps, types, deprecation — Genesis402 / UnyKorn Operator Network

The latest ~100 npm security advisories, normalized for machines: severity, CVSS, affected packages, vulnerable ranges, patched versions. Derived from the GitHub Advisory Database (CC-BY 4.0, attributed).

Spell an integer out in English words, e.g. 123 → "one hundred twenty-three". Negatives are prefixed with "minus".

Supplement analysis for nutrition and health agents. Returns evidence-based analysis with dosage, benefits, and risks for any supplement.

Personalized nutrition plan for nutrition and fitness agents. Returns macros, meal timing, and supplement guidance tuned to goals.

Supplement stack builder for nutrition and fitness agents. Returns an evidence-ranked supplement stack for any health or fitness goal.

Nutrition science synthesis for nutrition and research agents. Returns PubMed-grounded synthesis on any nutrition topic.

Food comparison for nutrition and health agents. Returns a side-by-side nutritional comparison of 2-4 foods.

Meal analysis for nutrition and health agents. Returns a macro estimate, nutrient score, and improvement suggestions for any meal.

Ultra-processed food check for one real product — scan a barcode (EAN/UPC) and get the NOVA processing group, Nutri-Score, full additive census with flagged-additive notes (EU-banned dyes, IARC-listed sweeteners, nitrites), added sugar/salt/saturated fat per 100g, and a plain verdict. Live Open Food Facts data (3M+ products, global), deterministic, no LLM.

Arm a price trigger with webhook delivery. Arms a single-fire price trigger. NythosX checks the price every minute and POSTs a JSON event to your HTTPS webhook on the first crossing, signed with HMAC-SHA256 (header X-NythosX-Signature: sha256=<hex> over the raw body, key = returned secret). Expires after ttl_hours (default 168, max 720). Check status free at GET /api/v1/triggers/status?id=.

Graded accuracy of past Advisor verdicts. Every Advisor verdict is logged and graded against the realized price after its horizon. Returns hit rate and average return by confidence bucket and by verdict, Wilson 95% intervals, sample counts and Brier score. Optional symbol filter.

Bind verified OAuth issuer and audience claims to the intended receiver

Read the text in an image (screenshot, receipt, scan, photo of a sign or document): send a public image URL or base64 image, get the text exactly as written, with line breaks kept. Optionally ask a question about the image instead.

OCR for AI agents, $0.20 per image: scans, photos and screenshots (PNG, JPEG, WebP, GIF, max 5 MB) to exact text with line breaks and reading order preserved. One call: send a url or base64 — no upload step, no polling. No text found means a 400 and you pay nothing. USDC on Base, no account, no API key.

OCR image to text with hallucination guard: dual-engine consensus, calibrated confidence, per-segment corroboration. Japanese-strong (latin too). Flat 0.005/image.

Extract text from images using Tesseract OCR. Send image as image_base64 (PNG/JPEG/WebP/TIFF/BMP, max 10 MB decoded). Returns text and confidence (0-100, where 80+ is reliable). Set language to Tesseract code: 'eng' (default), 'deu' (German), 'fra' (French), 'chi_sim' (Chinese Simplified), 'jpn' (Japanese), 'ara' (Arabic). Use for invoices, receipts, scanned documents, or screenshots with text.

OFAC SDN sanctions screen for a crypto wallet address

Use when an agent must check a person, company, vessel or aircraft against the U.S. Treasury OFAC SDN list before paying, onboarding or shipping. Input: name (fuzzy, aliases included), optional type, min_score, limit. Output: JSON potential matches with score, SDN entry, programs, countries, aliases, OFAC link, list as-of date, data age. Not a legal determination. Example: ?name=Lazarus+Group

Screen any person or company against the US Treasury OFAC sanctions lists — SDN and Consolidated, primary names plus every recorded alias, 39,000 names in total. Handles the 'LAST, First' convention OFAC uses, strips legal suffixes so Ltd and Limited match, and returns exact, strong and possible hits with the sanctions programmes attached. Tuned to over-report rather than miss. Returns the list build date so you know how current the screen is.

Use when an agent must check a crypto wallet against the digital currency addresses on the U.S. Treasury OFAC SDN list before paying or accepting funds. Input: address (EVM matched on every EVM chain; BTC, TRX, SOL...), optional chain. Output: JSON listed yes/no, SDN entry, programs, listed currency and network, OFAC link, list as-of date, data age. Not a legal determination. Example: ?address=0x098B716B8Aaf21512996dC57EB0615e2383E2f96

OHLCV candles for a coin

Extract structured JSON from unstructured text against a caller-supplied JSON Schema — parse-validated with one automatic retry, 502 on failure instead of garbage

One bounded x402 endpoint request and payment-flow evaluation

Rewrite text per a natural-language instruction (tone, formality, simplification, shortening) — deterministic flash-model rewriting with hard input/output caps

Single-label text classification against 2-20 caller-supplied labels — reply validated against the label set, canonical label returned, 502 instead of hallucinated labels

Summarize text as bullet points, a paragraph, or a single line — deterministic flash-model summarization with hard input/output caps

Purchase a machine-readable extraction sample from one HTTPS webpage

x402 Bazaar trending report: services gaining settled calls and unique payers fastest between the two latest daily snapshots, with decliners and new entrants

Current Base mainnet block number, fetched live from redundant public RPCs

x402 Bazaar category heat map: every listing in the latest daily full-catalogue snapshot classified into 9 categories (search/scrape, crypto-data, ai-inference, social-data, verification, compute/browser, agent-tools, enrichment, other) with listing counts, settled 30d calls, unique payers and listing share per category

x402 Bazaar seller leaderboard: top 25 seller addresses ranked by settled 30d calls in the latest daily full-catalogue snapshot, with listing count, unique 30d payers and each seller’s busiest resource

USDC balance of any Base mainnet address, read live via balanceOf on the canonical USDC contract (6 decimals), from redundant public RPCs

Live health probe of the two x402 facilitators this service settles through: Dexter /supported coverage (kinds, schemes, networks) and Coinbase CDP reachability with HTTP status and latency

x402 Bazaar new listings: resources that appeared in the latest daily full-catalogue snapshot but were absent the day before — resource URL, service, network, price and seller for up to 50 entrants, sorted by 30d call volume

Base mainnet transaction status by hash: success/reverted, block number, confirmation count, gas used and effective gas price, from redundant public RPCs

Real-time cryptocurrency price data

x402 Bazaar price distribution across the latest daily full-catalogue snapshot: min/p25/p50/p75/p90/max in atomic units and USD, USD price bands with shares, and per-network listing counts with median price. Optional ?network= filter.

Live Base mainnet gas price and latest-block baseFeePerGas (EIP-1559), in wei and gwei, from redundant public RPCs

x402 Bazaar day-over-day catalogue diff between the two latest daily full-catalogue snapshots: counts and samples of added resources, removed resources, and price changes (from/to atomic amounts)

Ranked keyword and named-entity extraction from text, returned as clean JSON arrays — parse-validated with one automatic retry

Comprehensive x402 Bazaar market report from the latest daily full-catalogue snapshot: marketplace totals, price percentiles and USD bands, network split, top 15 services by settled calls and by unique payers, top 10 sellers, new entrants vs the prior snapshot, top movers by call growth, and the count of listings with real repeat demand (>=5 unique 30d payers)

LLM-powered answer with cited sources

Wallet token flow and activity analysis

Quality-score an x402 Bazaar listing (0-100): live SSRF-guarded probe of the resource for a valid 402 challenge with description/output-schema/category/price-floor checks, plus snapshot-history analysis from daily full-catalogue Bazaar snapshots (price churn, delisting)