Quick trust score lookup for wallets, agents, and addresses via x402-paid API on Base.
What it does
DeFi Shield is a suite of 69 paid API endpoints providing security intelligence for autonomous AI agents, settling payments in USDC on Base via the x402 protocol. The `/api/trust/score` endpoint is one of five Agent-to-Agent Trust endpoints, offering a quick trust score lookup for a given address or entity. It costs $0.10 per call.
The broader DeFi Shield platform spans 11 categories including DeFi intelligence, wallet profiling, MEV and trading analysis, NFT risk scoring, cross-chain comparisons, safety and compliance checks, developer security scanning, protocol intelligence, real-time monitoring, data infrastructure utilities, and agent-to-agent trust. Each endpoint accepts POST requests with an x402 payment header and returns JSON. Free GET-based endpoint discovery is available on every route, and a health endpoint at `/api/health` lists all endpoints with pricing.
No OpenAPI schema or detailed documentation page was found (the `/docs` path returns 404). The x402 challenge was captured as live (HTTP 402 on POST), but the challenge body was empty, so exact payment parameters (token address, network, facilitator) could not be confirmed from the probe alone. The landing page states USDC on Base with prices ranging from $0.01 to $2.50 per call.
Capabilities
Use cases
- —AI agents verifying counterparty trustworthiness before executing a transaction
- —Automated pipelines checking wallet or address trust scores before interacting
- —Agent-to-agent trust establishment in multi-agent DeFi workflows
- —Quick pre-trade risk checks on unfamiliar addresses
- —Screening addresses for scam or fraud indicators
Fit
Best for
- —Autonomous AI agents needing per-call trust lookups on-chain
- —DeFi bots that need lightweight address reputation checks
- —Multi-agent systems requiring trust verification before collaboration
Not for
- —Bulk historical trust analytics across thousands of addresses (single-call pricing may add up)
- —Non-crypto use cases with no on-chain address context
- —Users who need free or subscription-based pricing rather than per-call micropayments
Quick start
# Free discovery (GET)
curl https://defi-shield-hazel.vercel.app/api/trust/score
# Paid request (POST, requires x402 payment header)
curl -X POST https://defi-shield-hazel.vercel.app/api/trust/score \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{"address": "0x1234...abcd"}'Example
Request
{
"address": "0x1234567890abcdef1234567890abcdef12345678"
}Endpoint
Quality
The endpoint is live (402 on POST) and the landing page provides pricing and a general description, but the x402 challenge body was empty, no OpenAPI schema exists, /docs returns 404, and no example response is available. The request schema and response format are inferred from context rather than documented.
Warnings
- —x402 challenge body was empty — exact payment parameters (token address, facilitator, network) could not be confirmed from the probe
- —No OpenAPI or JSON schema available for request/response
- —Documentation page (/docs) returns 404
- —Example response is inferred; no actual response sample was captured
- —Request body schema is assumed based on landing page quick-start example
Citations
- —DeFi Shield offers 69 paid API endpoints for security intelligence, paid via USDC on Base using x402https://defi-shield-hazel.vercel.app
- —/api/trust/score is a quick trust score lookup endpoint priced at $0.10 per callhttps://defi-shield-hazel.vercel.app
- —Free endpoint discovery is available via GET on every endpoint, and /api/health lists all endpoints with pricinghttps://defi-shield-hazel.vercel.app
- —The x402 probe returned HTTP 402 on POST, confirming the endpoint is livehttps://defi-shield-hazel.vercel.app/api/trust/score