AsterPay Data API

Endpoints (57 live)

• GET /v1/data/company/vat/FI01120389 — EU VAT number validation (VIES). Validates an EU VAT identification number against the European Commission VIES service and returns the registered name and address where the member state publishes them. Source: European Commission VIES. Cadence: live. (0.005 USDC on Base)
• GET /v1/data/fx/pair/USD/JPY — FX cross rate from ECB fixings. Cross rate between two ISO currencies derived from the daily ECB euro reference fixing (e.g. USD/JPY = EURJPY / EURUSD). Same fixing time as /v1/data/fx/ecb. Source: European Central Bank. Cadence: daily. (0.002 USDC on Base)
• GET /v1/data/macro/inflation/us — Consumer price inflation, US (BLS) or EU (Eurostat HICP). Latest headline inflation: region "us" returns CPI-U index with year-on-year and month-on-month change (BLS); "eu" returns euro-area HICP annual rate (Eurostat); a two-letter EU country code returns that country's HICP annual rate. Source: BLS / Eurostat. Cadence: monthly. (0.005 USDC on Base)
• GET /v2/x402/agent/trust-score/:address — Quick KYA Trust Score for any AI agent wallet. Returns score (0-100), tier, and sanctions status. Paid via x402 USDC. (0.005 USDC on Base)
• GET /v1/agent/deep-analysis/:address — Deep KYA Trust Score analysis for any AI agent or wallet. Returns 7-component trust score (0-100), risk tier, sanctions status, ERC-8004 identity, InsumerAPI attestations, and payment eligibility. The most comprehensive agent trust check available. (0.01 USDC on Base)
• GET /v1/market/ohlcv/bitcoin — Get OHLCV candlestick data for charting and analysis (0.01 USDC on Base)
• POST /v1/agent/deep-analysis/batch — Batch KYA Trust Score analysis for up to 50 AI agent or wallet addresses in one call. Returns a per-address 7-component trust score (0-100), risk tier, and sanctions status. (0.05 USDC on Base)
• POST /v1/ai/code-review — AI-powered code review. Returns bugs, improvements, and security issues. (0.05 USDC on Base)
• GET /v2/x402/ai/sentiment — AI sentiment analysis (GET alias with ?text= query). Paid via x402. (0.01 USDC on Base)
• POST /v2/x402/offramp/quote — Lock a USDC to EUR settlement quote. Returns a signed quote_id, locked EUR rate, fees and SEPA delivery. The only x402 endpoint that locks a EUR fiat settlement quote. (0.005 USDC on Base)
• POST /v2/x402/ai/fact-check/deep — Deep fact-check with claim decomposition. Breaks compound claims into sub-claims (max 5), verifies each against source. Deterministic overall verdict. (0.05 USDC on Base)
• GET /v1/crypto/wallet-score/:address — Get reputation score for any blockchain wallet address (0.05 USDC on Base)
• POST /v1/ai/summarize — Summarize any text using AI. Returns a concise summary. (0.004 USDC on Base)
• GET /v1/crypto/whale-alerts — Get recent large cryptocurrency movements (whale alerts) (0.02 USDC on Base)
• POST /v2/x402/ai/fact-check — Source-bounded fact-check. Verify a claim against provided source text. Returns verdict: supported, contradicted, or unverifiable. Does NOT search the web. (0.01 USDC on Base)
• POST /v1/ai/sentiment — Analyze sentiment of text. Returns positive/negative/neutral score. (0.004 USDC on Base)
• GET /v2/x402/crypto/prices — Aggregated crypto price feed — top tokens (BTC, ETH, SOL) + stablecoins (USDC, EURC). Paid via x402. (0.005 USDC on Base)
• GET /v2/x402/agent-readiness — Agent-readiness scan of any public website: scores 0-100 on MCP server, /.well-known/agent.json, llms.txt, OpenAPI validity, JSON-LD catalog and x402/MPP payability. Same published methodology as the asterpay.io checker. Paid via x402. (0.02 USDC on Base)
• GET /v1/market/price/bitcoin — Get real-time cryptocurrency price data for any token (0.005 USDC on Base)
• GET /v1/crypto/wallet-score/0x1234567890123456789012345678901234567890 — Get reputation score for any blockchain wallet address (0.05 USDC on Base)

+37 more endpoints.

MCP tools (20)

asterpay https://x402.asterpay.io/mcp

• agent_deep_analysis — Deep behavioral trust analysis — velocity, signals, recommendation. Cost: $0.01 USDC via x402.
• ai_code_review — AI-powered code review — bugs, improvements, security. Cost: $0.05 USDC via x402.
• ai_fact_check — Fact-check a claim against provided source text. Source-bounded only — does NOT search the web. Returns verdict: supported, contradicted, or unverifiable. Basic: $0.01 USDC, Deep (multi-claim decomposition): $0.05 USDC.
• ai_sentiment — Sentiment analysis — positive/negative/neutral with confidence. Cost: $0.004 USDC via x402.
• ai_summarize — Summarize any text using AI. Cost: $0.004 USDC via x402.
• ai_translate — Translate text to any language. Cost: $0.02 USDC via x402.
• check_agent_trust — Check if an AI agent or wallet is trustworthy. Returns KYA trust score 0-100, tier, sanctions status, ERC-8004 identity. FREE.
• data_catalog — Catalog of AsterPay data feeds under /v1/data: FX (ECB), energy (EIA, ENTSO-E), macro (US debt, inflation, rates, recession, bank failures), stablecoins/crypto, security (CVE, CISA KEV, ransomware), EU VAT check, and risk (asteroids, space weather, earthquakes, outbreaks, climate, AGI/AI-extinction markets, Doomsday Clock). Returns path, price in USDC, cadence, source and parameters for each feed. Use data_get to fetch one. FREE.
• data_get — Fetch one data feed from the catalog, e.g. path 'energy/oil', 'macro/us-debt', 'fx/pair/:base/:quote' with params {base:'USD',quote:'JPY'}. Every response carries source, observed_at (upstream timestamp), fetched_at, cadence and a stale flag. Free feeds return immediately; paid feeds ($0.001-$0.005 USDC) return x402 payment instructions when called without payment.
• discover_endpoints — List all available AsterPay API endpoints with pricing. x402 Bazaar compatible. FREE.
• generate_qr_code — Generate QR code PNG from text or URL. FREE.
• get_agent_tier — Get trust tier (Open/Verified/Trusted/Enterprise) and max per-tx limit for an agent address. FREE.
• get_crypto_price — Real-time cryptocurrency price (BTC, ETH, SOL, etc.). Returns price, market cap, 24h volume. Cost: $0.005 USDC via x402.
• get_trending — Currently trending cryptocurrency tokens by search interest. Cost: $0.005 USDC via x402.
• risk_board — World Risk Board: one call, nine tiles - Doomsday Clock, AI-extinction and AGI prediction markets, asteroids, space weather, earthquakes, outbreaks, climate and macro risk markets. FREE.
• settlement_estimate — Estimate EUR amount for a given USDC via SEPA Instant. Shows exchange rate, fees (0.5%), net EUR, timing. FREE.
• token_analysis — Security analysis for ERC-20 tokens — honeypots, rug pulls, ownership risks. Cost: $0.10 USDC via x402.
• verify_agent_identity — Verify whether an Ethereum address is registered as an AI agent (ERC-8004 on Base). Returns verified, agentId, owner, metadataUri. FREE.
• wallet_score — Reputation and risk score for any blockchain wallet. Analyzes tx history, age, patterns. Cost: $0.05 USDC via x402.
• whale_alerts — Large cryptocurrency movements (whale alerts). Cost: $0.02 USDC via x402.