Top coins by market cap (CoinGecko): price, market cap, 24h volume, 24h change; ?limit= up to 100. No required params. Use when an agent needs a ranked market snapshot.

A standing re-check of ONE citation or package version, for an answer that must stay true for a month rather than once: daily re-checks for 30 days. US$0.50 the month — 1.7 cents a check, under a 2-cent lookup. The first check is answered and signed on purchase, and each real change (a retraction, a new advisory, a yanked version) gets its own signed receipt. One subject only: for a list use /watch/portfolio. Pay per call here, or redeem a pack code (10 credits).

Aurelius Node 01: Real-time Texas Regional Corridor ground-truth oracle (DFW, Permian, Gulf Coast, Central TX). Provides 46-item supply matrix: structural steel, industrial copper/aluminum, OCTG casing, oilfield supply, piping, aggregates, concrete & green energy infrastructure. Includes EIA fuel rack benchmarks & spot hotshot freight rates. Returns JSON schema with stock levels, lat/lng, lead times, hazmat status, & instant $0.05 USDC settlement via Base x402 V2.

Whale monitor: mempool transfers over 50 BTC — flat $0.001 per call, USDC on Base, no signup.

Can I e-invoice this company? EU VAT (VIES) + Peppol Directory registration + country B2B e-invoice mandate + recommended format

SANDBOX e-invoice send flow: VIES buyer check + sanctions + EN 16931 UBL create/validate + Peppol/mandate route + sandbox transport (mock, Recommand playground or e-invoice.be test mode; loopback recipient, nothing reaches a real buyer) + Ed25519-signed evidence receipt

Validate an EU e-invoice (UBL, CII or ZUGFeRD/Factur-X PDF) against official EN 16931 and XRechnung rules; errors with rule IDs and plain-English fixes

Create a validated EU e-invoice (UBL 2.1: EN 16931, XRechnung or Peppol BIS 3 structure) from simple JSON; totals and VAT breakdown computed

Vet a directory, publication or sponsor pitch before paying: domain age (RDAP), Tranco rank, Google News presence, outbound-link dilution, badge and pay-to-play signals, score 0-100 with red flags

x402 Starter Kit — everything an AI agent needs to start paying and earning on-chain: quickstart code, full endpoint catalog, live bounty radar + news snapshot, seller trust proof

Checks a counterparty agent's stated security posture against the MASSAT governance framework's actual requirements - flags claims that don't hold up. | BlindOracle by Craig M. Brown (craigmbrown.com) - counterparty-risk infrastructure sold to autonomous AI agents; self-built multi-agent framework (42+ agents); ERC-8004 agent passport #60979; paid via x402 in USDC on Base

Tests whether a counterparty agent's input handling resists prompt-injection and content-trap patterns - a concrete resilience check, not a compliance checkbox. | BlindOracle by Craig M. Brown (craigmbrown.com) - counterparty-risk infrastructure sold to autonomous AI agents; self-built multi-agent framework (42+ agents); ERC-8004 agent passport #60979; paid via x402 in USDC on Base

Batch Base pre-trade risk, token safety, rugpull and honeypot verdicts for up to 5 EVM contracts before a buyer agent signs or routes a swap. Returns PROCEED/CAUTION/REJECT actions, safety scores, warnings, evidence, aggregate counts, and an optional 0.50 USDC bundled-risk-pack tier. Search keywords: rug check, honeypot check, token risk, swap preflight, rug pull, scam token, and is this token safe.

Base mainnet transaction status: success, failed or pending, with block, confirmations, gas used, effective gas price, from/to and log count. Use it after sending or receiving a payment to confirm it landed and how deep it is. One normalized JSON answer instead of combining receipt and block calls and computing confirmations yourself. Query: ?hash=0x...

Returns recent cryptocurrency headline metadata and sentiment.

Site Agent-Readiness Verdict Card: grade a domain's agent-facing files (llms.txt, A2A, MCP card, OpenAPI), TLS, headers and AI-crawler policy

Offer one bounded contribution to Root Logos for constitutional evaluation and preservation. Current open call: https://rootlogos.com/agent-call.json. Payment grants no admission or authority.

Rules-based SEO + agent-readiness audit of a domain

Discovery endpoint for x402 APIs. Send a task in natural language (or a pre-split list of sub-tasks); receive a set of routes that together address the request, plus a total price estimate.

OT-contextualised CVE triage for ICS/SCADA. Pass ?id=CVE-XXXX-XXXX. Returns OT-adjusted severity, cyber-physical impact, patch feasibility, CISA KEV status, and prioritised action. DeepSeek-enriched with live NVD and CISA-KEV data.