# DeFi Fintech Directory (AV-Hub x402) > Agent-payable builder & studio tools sold via x402 (USDC on Base). > First merchant: Aeternus Vita / AV-Hub. Human site explains; machines use the files below. > listed: false until the owner publishes. Phase 0 = discovery only — payments not live yet. > No accounts — pay per call (when live). Organic-only · FacelessYT parked · no invented GMV. Important notes: - Network: eip155:8453 (Base). Asset: USDC. Scheme: exact. - payTo: 0x96873Fb532C630aE88c5e8A5dF5ef430c92dfF32 - MCP and HTTP are the same prices; different transport envelopes. - API: https://api.defifintechdirectory.com · MCP: https://mcp.defifintechdirectory.com/mcp - Do not invent revenue or call counts for this site. Protocol-wide stats live on x402.org. ## Catalog - [Product catalog JSON](https://defifintechdirectory.com/catalog.json): Tool ids, USDC prices, inputs/outputs, payTo - [OpenAPI 3.1](https://defifintechdirectory.com/openapi.json): Paid HTTP routes (stub / coming soon) - [MCP server](https://mcp.defifintechdirectory.com/mcp): Streamable HTTP MCP — tools behind x402 (Phase 1+) - [x402 well-known](https://defifintechdirectory.com/.well-known/x402.json): Paid-route manifest - [MCP server card](https://defifintechdirectory.com/.well-known/mcp/server-card.json): Tools list without paying - [Full dump](https://defifintechdirectory.com/llms-full.txt): Inline tool cards + how to pay - [Health](https://defifintechdirectory.com/health.json): listed flag, network, paymentsLive ## Tools (AV-Hub MVP — listed prices, not live yet) - [game_launch_kit](https://defifintechdirectory.com/tools/game_launch_kit.md): $1.00 — PRD+COMPS+PROMPTS+LAUNCH-NOTES bundle - [store_art_prompt_pack](https://defifintechdirectory.com/tools/store_art_prompt_pack.md): $0.15 — Imagine prompts + negatives - [ship_gate_audit](https://defifintechdirectory.com/tools/ship_gate_audit.md): $0.10 — SEO/ASO/GDPR polish score - [companion_book_outline](https://defifintechdirectory.com/tools/companion_book_outline.md): $0.50 — outline + safe CTAs - [stickman_short_script](https://defifintechdirectory.com/tools/stickman_short_script.md): $0.10 — 45–60s stick script + shots ## Coming (agent-daily — not sellable yet) - directory_search ($0.005) — search this directory catalog - x402_preflight ($0.003) — probe PaymentRequired before spend - listing_health_check ($0.01) — score OpenAPI / llms / well-known freshness ## How to pay - [How to pay (markdown)](https://defifintechdirectory.com/how-to-pay.md): HTTP 402 → PAYMENT-SIGNATURE → facilitator settle - [x402 seller docs](https://docs.x402.org/getting-started/quickstart-for-sellers.md): Protocol reference - [Bazaar extension](https://docs.x402.org/extensions/bazaar.md): Discovery after listed:true + settled call ## Optional - [About AV-Hub](https://defifintechdirectory.com/about.md) - [Status](https://defifintechdirectory.com/status.html): listed flag, health, network - [Tools index](https://defifintechdirectory.com/tools/index.html): pricing table - [Directory](https://defifintechdirectory.com/directory/index.html): taxonomy tease - [Agentic.Market API](https://api.agentic.market/v1/services): External bazaar browse (not our inventory) - [402.ad search](https://402.ad/docs): Independent NL search + MCP https://402.ad/mcp