# Cross-Chain Bridge Safety Screener

> Cross-Chain Bridge Safety Screener is a paid API for AI agents from api.agentstools.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns a deterministic 0-100 risk score and a safe/caution/avoid verdict for a named cross-chain bridge by fusing trust model, TVL depth, exploit history, and governance/upgrade risk.

## Facts

- Endpoint: GET https://api.agentstools.dev/bridge/screen
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cross-chain-bridge-safety-screener-eaa9b57c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DRsHdxUzCtB2guvuRxy-l

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 cross-chain-bridge-safety-screener-eaa9b57c
```

Example prompt: Before I move funds, can you give me the risk score and safety verdict for the Stargate bridge — I want to know if it's safe, a caution, or something to avoid, and why?

## When to prefer this

Choose this endpoint when an agent or user needs a fast, consolidated safety verdict for a specific cross-chain bridge without manually reconciling L2Beat, DefiLlama TVL, and hack post-mortems. Ideal for pre-transaction due diligence, wallet/app risk warnings, or DeFi workflow automation where bridge safety is a prerequisite check.

## Known failure modes

- Unknown bridge name returns an error or empty result if the slug cannot be resolved to a covered bridge
- Bridge data may be stale if exploit history or TVL has changed very recently
- Coverage gaps: niche or newly launched bridges may not be in the covered set
- Payment failure (x402) if the $0.05 USDC fee is not submitted correctly

## How this service works

Cross-chain bridge safety screen: given a bridge (Stargate, Across, Wormhole, Arbitrum, CCTP, ...), returns a deterministic 0-100 risk score and a safe/caution/avoid verdict fusing its trust model, TVL depth, exploit history and governance/upgrade risk, with the reasons. One call instead of reconciling L2Beat, DefiLlama TVL and hack post-mortems yourself.

## Output

A 0-100 numeric risk score, a categorical verdict (safe/caution/avoid), and structured reasons covering the bridge's trust model, TVL depth, exploit history, and governance/upgrade risk — all in a single response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "bridge"
     ],
     "properties": {
      "bridge": {
       "type": "string",
       "description": "Bridge name, slug or alias (e.g. Stargate, Across, Wormhole, Arbitrum, CCTP). Resolved case-insensitively to the covered set."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cross-chain-bridge-safety-screener-eaa9b57c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.agentstools.dev](https://www.zero.xyz/host/api.agentstools.dev/llms.txt)