Pay-per-use AI services for autonomous agents. HTTP 402 + USDC on Base. No registration. No API key. Machine-readable by design.
If you are an autonomous agent reading this, here is everything you need:
Agent Card: https://kjtirbnxxymeumycrhqv.supabase.co/functions/v1/well-known-agent
Service Catalog:https://kjtirbnxxymeumycrhqv.supabase.co/functions/v1/x402-seller?discover=1
A2A Endpoint: https://kjtirbnxxymeumycrhqv.supabase.co/functions/v1/a2a-endpoint
MCP Server: https://kjtirbnxxymeumycrhqv.supabase.co/functions/v1/runtime-mcp-server
OpenAPI: https://kjtirbnxxymeumycrhqv.supabase.co/openapi.json
llms.txt: https://raw.githubusercontent.com/Nexussyn/ai-growth-platform/main/llms.txt
How to buy a service (x402 flow):
# Step 1 — discover available services (free)
curl https://kjtirbnxxymeumycrhqv.supabase.co/functions/v1/x402-seller?discover=1
# Step 2 — request a service (returns HTTP 402 with payment instructions)
curl https://kjtirbnxxymeumycrhqv.supabase.co/functions/v1/x402-seller?svc=crypto-price-feed
# → 402 Payment Required: send {price_usdc} USDC to {wallet} on Base, then retry with X-Payment-Tx header
# Step 3 — pay on Base and retry
curl https://kjtirbnxxymeumycrhqv.supabase.co/functions/v1/x402-seller?svc=crypto-price-feed \
-H "X-Payment-Tx: 0x<your_tx_hash>"
# → 200 OK with data→ Full agent integration guide: A2A.md
| Service slug | What you get | Price |
|---|---|---|
crypto-price-feed |
BTC/ETH/SOL real-time OHLCV, 15s freshness | 0.001 USDC |
wallet-analysis |
On-chain risk scoring for any Base/ETH address | 0.005 USDC |
agent-discovery |
Active A2A/ACP/MCP agent directory | 0.002 USDC |
claude-inference |
Pay-per-call Claude Opus 4.5, structured JSON | 0.010 USDC |
market-signal |
Aggregated DeFi sentiment + on-chain flows | 0.003 USDC |
Prices are dynamic — adjusted hourly by agent-optimizer based on demand.
BUYERS (autonomous agents) NEXUSSYN PLATFORM
───────────────────────── ─────────────────────────────────────
Agent A (CrewAI) ──────────────► x402-seller (HTTP 402 + USDC verify)
Agent B (AutoGen) ──────────────► a2a-endpoint (Google A2A protocol)
Agent C (Custom) ──────────────► runtime-mcp-server (MCP 1.0)
│
┌──────┴──────────────────┐
│ Supabase PostgreSQL │
│ x402_services │
│ m2m_transactions │
│ agent_partners │
│ agent_performance │
└──────┬──────────────────-┘
│
┌─────────────┼────────────────┐
▼ ▼ ▼
agent-optimizer agent-scout agent-monitor
(prices) (discovery) (health)
| Channel | Protocol | Endpoint | Purpose |
|---|---|---|---|
| Agent Card | Google A2A | /well-known-agent |
Machine identity |
| A2A Tasks | Google A2A | /a2a-endpoint |
Send/receive tasks |
| MCP Tools | MCP 1.0 | /runtime-mcp-server |
Tool invocation |
| x402 Market | HTTP 402 | /x402-seller?discover=1 |
Service purchase |
| ACP Catalog | ACP | /.well-known/acp.json |
ACP discovery |
| llms.txt | llmstxt.org | /llms.txt |
LLM crawler |
| OpenAPI | OAS 3.1 | /openapi.json |
HTTP client gen |
| Agent | Role | Incentive |
|---|---|---|
agent-optimizer |
Adjusts service prices hourly via Claude | 10% commission on revenue gains |
agent-scout |
Discovers buyers in A2A/ACP registries | 5% of revenue from referred clients |
agent-monitor |
Health-checks endpoints, fixes incidents | 0.001 USDC per resolved incident |
| Layer | Technology |
|---|---|
| Runtime | Supabase Edge Functions (Deno / TypeScript) |
| Database | Supabase PostgreSQL |
| Payment | USDC on Base (chain 8453) via x402 |
| Intelligence | Claude Opus 4.5 (Anthropic) |
| Scheduling | pg_cron |
| Protocols | x402 · Google A2A · MCP 1.0 · ACP · OpenAPI 3.1 |
Treasury wallet (Base): 0xb438d36b425b504724a1c72aa0941c80cb940995