# Speer Cyber Defense – Base Blockchain Address Intelligence

> Speer Cyber Defense – Base Blockchain Address Intelligence is a paid API for AI agents from api.speercyberdefense.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Looks up intelligence and risk analysis for a specific Base blockchain address, returning a security-focused summary for $0.003 USDC per call.

## Facts

- Endpoint: GET https://api.speercyberdefense.com/v1/blockchain/address/%7Baddress%7D
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/speer-cyber-defense-base-blockchain-address-intelligence-ce8a306a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5m5q1WQGToNMiUOvG6WtF

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 speer-cyber-defense-base-blockchain-address-intelligence-ce8a306a
```

Example prompt: Can you run a security intelligence check on Base blockchain address 0x1234abcd... and tell me if it's linked to any suspicious or malicious activity?

## When to prefer this

Choose this endpoint when you need on-demand, pay-per-call Base blockchain address intelligence without a subscription — especially useful for AI agents performing automated security screening, fraud detection, or due diligence on Base network addresses. Prefer over generic blockchain explorers when a security-focused risk assessment is needed rather than raw transaction history.

## Known failure modes

- HTTP 503 if the security analysis fails (not billed)
- Invalid or malformed address returns an error
- Address not found or no data available on Base network
- Payment failure via x402 micropayment protocol blocks the call

## How this service works

Cybersecurity micropayments API for AI agents — pay-per-call USDC on Base and Solana (x402 v2). Free utility services under /v1/free/* and gateway select under /v1/gateway/* (Public). Paid cybersecurity analysis, CVE/security news feeds, Base blockchain intelligence, network intel utilities, composite domain/URL reports, research, conversion, verification, and feeds. Failed security analyses are not billed (HTTP 503).

## Output

A JSON object containing a security-focused intelligence summary for the queried Base blockchain address, including an ok status, tool identifier, status field, and a summary of findings. Failed analyses return HTTP 503 and are not billed.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tool": "resource",
  "status": "ok",
  "summary": "Completed"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/speer-cyber-defense-base-blockchain-address-intelligence-ce8a306a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.speercyberdefense.com](https://www.zero.xyz/host/api.speercyberdefense.com/llms.txt)