# AtlasMarkets Dagon — On-Chain Data Intelligence Preflight

> AtlasMarkets Dagon — On-Chain Data Intelligence Preflight is a paid API for AI agents from atlasmarkets-dagon.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-11).

Returns preflight/payment metadata for the Dagon on-chain data intelligence API, enabling agents to discover pricing and payment requirements before querying blockchain data.

## Facts

- Endpoint: GET https://atlasmarkets-dagon.onrender.com/api/dagon/preflight?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/atlasmarkets-dagon-on-chain-data-intelligence-preflight-182a858f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DuqkZ7EdEK8c-3_3ifwwQ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability atlasmarkets-dagon-on-chain-data-intelligence-preflight-182a858f
```

Example prompt: Check the payment and access requirements for AtlasMarkets Dagon so I know what it will cost in USDC to pull on-chain intelligence data from Base mainnet before I commit to the call.

## When to prefer this

Use this endpoint when you need to programmatically discover the cost and payment structure of the AtlasMarkets Dagon on-chain data API before committing USDC. Ideal for AI agents implementing x402 payment flows on Base mainnet who need to validate pricing and endpoint availability before executing a paid data call.

## Known failure modes

- Service unavailable on Render free tier (cold start latency or spin-down)
- Malformed properties parameter returns empty or error response
- No payment info returned if x402 headers not properly negotiated
- Rate limiting if preflight is called excessively

## How this service works

on-chain data intelligence for AI agents. x402-protected on Base mainnet.

## Output

Returns preflight metadata including payment requirements (price in USDC, accepted payment networks, x402 payment details), supported data properties, and any access conditions needed before making a paid on-chain data query on Base mainnet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/atlasmarkets-dagon-on-chain-data-intelligence-preflight-182a858f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from atlasmarkets-dagon.onrender.com](https://www.zero.xyz/host/atlasmarkets-dagon.onrender.com/llms.txt)