# Show HN: X402 Inspector (Find misconfigurations in your x402 API)

> Source: <https://contextiq.trango-compute.com>
> Published: 2026-09-28 14:21:06+00:00

# Engineer your AI's context — visually.

## Is your site ready for AI agents?

Scan any URL for **MCP**, **A2A**, and **ARD** support — live handshake, agent card, and catalog checks in seconds.

[Compare 20+ models →](https://contextiq.trango-compute.com/dashboard/token-inspector)

11 live tools · free · no sign-up on public tools

### Token Inspector

Compare token counts and costs across GPT-4o, Claude, Gemini, and 20+ models. Know your monthly bill before you commit.

### AI Agent Protocol Inspector

Enter any URL and detect MCP, A2A, and ARD support. Live MCP handshake with tools/list, agent card parsing, and ai-catalog.json discovery.

### RAG Chunk Inspector

See exactly how any document splits into chunks. Compare tiktoken, sentence, and paragraph strategies with a live LLM context preview.

### Agent Workflow Visualizer

Paste a GitHub URL — instantly see your agent graph. Supports LangGraph, CrewAI, AutoGen, Google ADK, and OpenAI Agents SDK.

### Agent Trace Inspector

Paste an OTLP JSON trace from LangSmith, Langfuse, or OpenTelemetry and see the full agent graph — with per-node token attribution for LangGraph, CrewAI, and OpenAI Agents.

### Memory Architecture Visualizer

Design agent memory layers as a DAG. Map episodic, semantic, and procedural memory with token budgets and data flows.

### HyDE Visualizer

See why hypothetical document embeddings retrieve better. Compare all-MiniLM-L6-v2 cosine scores for direct query vs HyDE across your corpus chunks.

### OIDC Inspector

Scan any domain for OpenID Connect configs. Detects Google, Microsoft, Auth0, Okta, and more across 11 subdomains.

### DNS Inspector

See every DNS record for any domain — A, MX, NS, TXT, CAA — plus SPF/DMARC verdicts and DNS host / mail provider detection.

### x402 Inspector

Paste a paid endpoint and validate its x402 payment challenge — HTTP 402 response shape, USDC amount encoding, and Base/Base Sepolia/Solana/Stellar address formats. Flags spec deviations in plain language before you ship.

### ERC-8004 Inspector

Enter an agent ID and look up its on-chain identity and reputation — live reads from the ERC-8004 Identity and Reputation registries on Ethereum, Base, Arbitrum, Polygon, Avalanche, and BNB Chain. Beta.

### Agent Commerce Gate

Combines ERC-8004 identity/reputation with x402 payment-challenge validation into a single allow/warn/block decision — check a counterparty before your agent pays it. Pro.

## Start building better AI systems.

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