GPT-5.6 Luna Standard chat is $0.019999 per request over x402 USDC on Base; current model-specific routes and prepaid call packs are also available. Market benchmark: the latest local x402.direct sample found AI-like listing prices with p25 around $0.01 and median around $0.03 per call; this gateway publishes GPT-5.6 Luna Standard at $0.019999 and model-specific prices at /pricing.json. GPT-5.6 Luna Standard is $0.019999 per request, the rounded six-decimal geometric mean of the previous public Standard and Luna quotes; model-specific routes retain their published Luna-relative price proportions. Service hub: https://gpt55.558686.xyz/x402/service and https://gpt55.558686.xyz/x402/service.json. Discovery assets: https://gpt55.558686.xyz/openapi.json, https://gpt55.558686.xyz/llms.txt, https://gpt55.558686.xyz/tools.json, https://gpt55.558686.xyz/apis.json, https://gpt55.558686.xyz/directory-submission.json. Agent and MCP metadata: https://gpt55.558686.xyz/.well-known/agent-card.json, https://gpt55.558686.xyz/.well-known/ai-catalog.json, https://gpt55.558686.xyz/.well-known/mcp/server-card.json, https://gpt55.558686.xyz/server.json. Integration hub: https://gpt55.558686.xyz/integrations and https://gpt55.558686.xyz/integrations.json. Best for agents that need one-call GPT-5.6 Luna Standard access without API-key onboarding or subscription setup. Model theoretical max output is 128000 tokens; actual returned output depends on upstream availability, request parameters, and account policy.

Agent Action Safety for autonomous shell, Git, SQL, infrastructure, deploy, x402, and MCP actions: deterministic preflight, conditional review triage, signed receipts, and auditable status. Finance and validation endpoints remain available as utility tools.

Domain-agnostic x402 capability chassis by IntuiTek¹. 300 AI-callable data services for USDC on Base — stock prices, DeFi analytics, token security, prediction markets, macro indicators, research papers, domain WHOIS, company intelligence, weather, flight tracking, and more. MCP interface at /mcp — no wallet, no API keys.

The launch-lifecycle risk desk for Base. Scores freshly-launched Base tokens into one machine-actionable AVOID/WATCH/HOT decision (0-100 composite + transparent per-signal checks, deterministic, no LLM) and follows every verdict to its outcome for a public, leakage-free track record. Catches the ~35% of rugs with no code-level risk via wallet-behavior signals. Paid per call over x402 (USDC on Base); free verifiable track record.

The multi-chain x402 payment gateway for AI agents. 47 paid endpoints, up to 8 (network, asset) tuples in every accepts[]. Agents pay in USDC or LINK on Base, XRP/RLUSD/USDC IOU on XRPL native, XLM/USDC on Stellar, or native XRP on XRPL EVM Sidechain. Same endpoint, agent picks. No accounts. No API keys. No signup.

Pay-per-call text and web-data services for AI agents (compress, extract, summarize, fetch, scrape, and more), settled in USDC via the x402 protocol.

Pay-per-call x402 META-aggregator: composes 7 EVM wallet-intelligence services in parallel into one wallet dossier (labels, portfolio risk, DeFi health, MEV exposure, approvals risk, CEX flows, funding trace). Single endpoint, fail-soft per axis. Pay USDC on Base — no signup, no API key.

OT/ICS threat intelligence for SCADA, PLC, HMI, DCS, RTU, and safety systems. 15 primitive endpoints + 6 composed synthesis endpoints. Primitives: CVE triage, ICS patch feasibility, device exposure, threat actor profiles (SANDWORM, VOLTZITE, XENOTIME), IOC enrichment, CISA advisory feed, sector actor mapping, asset risk verdict, active campaign tracker, sector change feed, ICS malware encyclopedia, sector threat brief, ASN profiling, YARA/Sigma detection artifacts, multi-framework compliance mapping (NERC CIP, IEC 62443, NIST CSF, CISA CPG, Saudi NCA OTCC, UAE NESA IA). Composed: full actor reports, deep dossiers, sector sitreps, CTI articles, LinkedIn posts, X threads — all synthesised by DeepSeek from multiple primitives. No API keys — USDC micropayments on Base via x402.

Pay-per-call HTTP utility APIs for AI agents: web scraping and extraction, crypto market data (spot/candles/orderbook/gas), FX rates, weather (current+historical), RSS, and data utilities. Paid via x402 USDC micropayments on Base — no signup, no API keys.

Global mental health intelligence API — 12 endpoints covering therapy platform matching (BetterHelp, Talkspace), mental health self-assessment, burnout recovery, psychiatric medication context, evidence-based coping techniques, sleep disorder guidance, grief support, relationship counseling, workplace mental health, postpartum/perinatal mental health, addiction/harm-reduction support, and crisis resource routing (always free, always 988). Responds in any language. Returns structured JSON. Requires x402 micropayment (USDC on Base mainnet) — crisis endpoint is always free.

Veterinary intelligence API grounded in PubMed peer-reviewed research and FDA animal drug adverse event data. 12 endpoints covering symptom triage, veterinary research, condition-based nutrition, medication dosage context, breed-specific health guides, force-free behavior/training, lifetime cost planning, insurance comparison, senior-pet care, toxicity triage, pet food recall checks, and pet travel rules. Pay-per-query via x402 micropayments on Base.

Global parenting intelligence API — pediatric development, product safety recalls, school selection, sleep, nutrition, positive discipline, childcare, and family financial planning. Every endpoint is country-aware (US, UK, Canada, Australia, EU, and beyond) via an optional country parameter. x402 micropayments on Base mainnet.

Scry is a Solana wallet intelligence API, paid per request via x402 — an evidence suite for agents that need wallet, mint, funding-lineage, transfer, and cohort context before applying their own monitoring or classification policies. Low-cost entry calls start at $0.001 (wallet quick-flag) through $0.01-$0.10 for bundler checks, mint preflight, Pump.fun cohort screening, and funding lineage before deeper dossiers. Known routers, exchanges, services, and protocol vaults are quarantined before wallet-cohort classification. Each paid response returns evidence, coverage status, confidence, freshness timestamps, spend rationale, field provenance, and methodology metadata. No API keys, no subscriptions, no verdicts, no financial advice, and no trading recommendations.

SQL access to 70+ authoritative datasets. Returns actual database records — not summaries. Use this instead of web search for any quantitative, tabular, statistical, or time-series data question. Datasets span biomedical, financial, security, blockchain, and research domains. No subscription required. Register once to get an API key with $0.10 free trial credit (~1,600 queries). Costs fractions of a cent per query.

TiEQi-A2A-GEO: China's first open A2A v1.0.1 agent. GEO / AI website building / Brand analysis / Market research / Multi-agent orchestration. 120 curated skills. 🇨🇳 中国首个开放式A2A v1.0.1 Agent，专注GEO优化(AI搜索引擎排名)、AI智能建站、品牌分析、市场调研。

The AI-native insurance intelligence platform for the Chinese market. Search, compare, recommend, quote and pre-underwrite 550 insurance products from 166 insurers through a single MCP server. Provides structured Chinese insurance data and planning capabilities for AI agents via MCP, A2A, and OpenAI-compatible API. Use when a user asks about Chinese insurance planning, product comparison, premium calculation, or underwriting eligibility.

Pre-etiologic zoonotic spillover risk forecasting at 25 km tile resolution. Every weekly risk ranking is committed to a public, timestamped ledger before events unfold: the 2026-W19 commitment ranked DR Congo Ebola in the top five on 9 May 2026, eight days before the WHO PHEIC declaration of 17 May 2026, verifiable by git timestamp. Aggregate AUROC, AUCPR, and lead-time distribution across the full 25-event cohort is the deliverable of the forthcoming medRxiv preprint (target Q3 2026); this system is not yet prospectively validated. Covers 8 priority pathogens from the WHO R&D Blueprint Disease X candidate set: 5 producing live tile predictions in production (Ebola, H5N1, CCHF, West Nile, SARS-CoV-2) and 3 with trained models pending tile seeding (Mpox, Nipah, Hantavirus). Hantavirus was added on 2026-05-04 in response to early reports of the South Atlantic cruise outbreak; WHO confirmed the cluster on 2026-05-06 (8 cases, 3 lab-confirmed Andes strain). Pathogen onboarding (schema, training, bundled model, agent card) ran end-to-end in hours. Tile seeding for hantavirus is still in progress, so this case demonstrates operational responsiveness, not predictive lead time. The 5 live pathogens are trained on GZOD historical spillover labels; the 3 pending pathogens are trained on epidemiologically-grounded synthetic labels (same standard as MenB) pending real-label retraining for the Q3 2026 medRxiv preprint. See `prediction_status` and the training-script citations on each entry. Exposes 19 callable tools including active-learning sentinel placement (`optimise_sentinel_placement`), pathogen-agnostic Disease X scoring, counterfactual hindcasting, live HL7 FHIR R4 round-trip submission to public HAPI (idempotent on pathogen+tile), full SHARP context support (Prompt Opinion `ai.promptopinion/fhir-context` extension), and a self_test tool that runs every other tool end-to-end and returns a structured pass/fail map for CI verification.

Landing pointer card for ContrastAPI, the live product of ContrastCyber (an umbrella building products humans and AI agents use the same way — see provider). ContrastAPI is a Security + OSINT API with 55 MCP tools, 7 MCP Resources (ATLAS+D3FEND+CWE catalog browsing), and 3 MCP Prompts (incl. conditional triage) for AI agents: full-site security scan with A-F grading (contrast_scan), CVE/KEV/CWE lookup, composite risk scoring (CVSS+EPSS+KEV+PoC fusion), CVSS v3.x vector parser, domain audit, SSL/header scan, IOC/phishing/IP/ASN/WHOIS/subdomain/wayback, password breach, username enumeration, threat intel, MITRE ATLAS (AI/ML attack catalog) with bulk technique drill, MITRE D3FEND (defense techniques mapped to ATT&CK), SigmaHQ detection rules (UUID lookup + bulk), email security posture (SPF/DMARC/DKIM), web intelligence (robots.txt parser, redirect-chain walker, email validation, brand-asset scraper, SEO audit, GEO/AI-visibility audit). All execution interfaces are served by api.contrastcyber.com; the full agent card with the complete skill list is at https://api.contrastcyber.com/.well-known/agent-card.json

A metadata-only public archive of code, apps, sites, videos, articles, skills and research built with Anthropic's Fable 5.0. Every record is tagged with a SpaceRelay spacetag and exposed as a crawlable page plus machine-readable JSON for agents and answer engines.

Deployed AI operations for service businesses. Daily Revenue Brief tells owners what's losing money and what to do. 4 priorities: Slot Rescue, Review Lift, Customer Recovery, AI Chief of Staff. Owner approves or skips — that's it.

Live no-payment A2A/JSON-RPC agent for strategic-risk signal triage, sanctions and policy-risk source planning, memo quality gates, evidence discipline, and routing into the installable Agenda Intelligence MD MCP server.

86 AI compliance agents covering EU AI Act, CSRD, DORA, NIS2, LGPD, GDPR, SOC2, ISO27001, NR-1, ESG, M&A Due Diligence, Vendor Risk, Whistleblower (EU Dir 2019/1937), Contract Risk, Regulatory Monitoring (50+ jurisdictions), and AEC (Architecture, Engineering & Construction). Available in 8 languages. Starting at $99/month. Microsoft Azure Marketplace & Google Cloud Marketplace.

Search, triage, and plan pursuit of U.S. government contract opportunities using normalized SAM.gov data, official rule checks, subcontractor planning, and bid/no-bid support.