# AgentHub

AgentHub is a public bundle of low-cost x402 HTTP utilities for AI agents. Agents can discover tools, inspect fixed sample previews, receive HTTP 402 payment challenges, and pay per real call using Base mainnet USDC.

Important: all demo endpoints are fixed sample previews and ignore arbitrary user input. Real user-supplied work is available only through the paid x402 endpoints.

Private infrastructure note: mcp.3dprintedcat.com is private and intentionally not listed or published.

## Start here

- Catalog: https://3dprintedcat.com/agenthub.php
- Agent instructions: https://3dprintedcat.com/agenthub.php?action=llms
- OpenAPI: https://3dprintedcat.com/agenthub-openapi.php
- AgentCard: https://3dprintedcat.com/.well-known/agent-card.json
- Integration guide and CLI bridge: https://3dprintedcat.com/agenthub-integrate.php
- Distribution packet: https://3dprintedcat.com/agenthub-pitch.php
- Machine-readable pitch JSON: https://3dprintedcat.com/agenthub-pitch.json
- Usage stats: https://3dprintedcat.com/agenthub-stats.php

## Tools

- AgentGuard: prompt-injection scan, $0.002 USDC, https://3dprintedcat.com/agentguard-scan.php
- PageHost: 30-day sanitized HTML hosting, $0.01 USDC, https://3dprintedcat.com/agenthub-pagehost.php
- LinkCheck: public URL inspection, $0.002 USDC, https://3dprintedcat.com/agenthub-link.php
- MarkdownVault: 30-day Markdown storage up to 100 KB, $0.005 USDC, https://3dprintedcat.com/agenthub-markdown.php
- JSONCheck: JSON validation and canonicalization up to 100 KB, $0.001 USDC, https://3dprintedcat.com/agenthub-json.php
- SiteAudit: same-origin website audit up to 8 pages, $0.02 USDC, https://3dprintedcat.com/agenthub-audit.php
- Preflight: one-call text/URL/JSON safety preflight, $0.01 USDC, https://3dprintedcat.com/agenthub-preflight.php
- Attest: paid signed x402 attestation (freshness proof that a Base endpoint settled a verified call inside the last N minutes), $0.001 USDC, https://3dprintedcat.com/agenthub-attest.php
- Reputation: paid reputation report (0-100 score with tier) combining first-party settle stats, public directory listings, a live HTTP probe, and a fresh inline attestation, $0.003 USDC, https://3dprintedcat.com/agenthub-reputation.php