# Bridge TVL & Per-Chain Liquidity Concentration

> Bridge TVL & Per-Chain Liquidity Concentration is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Returns total value locked and per-chain liquidity breakdown for a named crypto bridge, including the largest single chain's share, sourced from DefiLlama.

## Facts

- Endpoint: GET https://payai.agentstools.dev/bridge/tvl
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bridge-tvl-per-chain-liquidity-concentration-4a20d92d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XxeNbpXIfQZwjwtbgWb75

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 bridge-tvl-per-chain-liquidity-concentration-4a20d92d
```

Example prompt: What's the current TVL and per-chain liquidity breakdown for Stargate bridge — I want to see how concentrated the liquidity is across chains before routing a large transfer.

## When to prefer this

Use this endpoint when you need authoritative, DefiLlama-sourced TVL and chain-level liquidity concentration data for a specific bridge — particularly for pre-routing due diligence, liquidity risk assessment, or comparing bridge depth. Prefer this over generic DeFi dashboards when you need structured, per-chain breakdown and concentration metrics in a single programmatic call.

## Known failure modes

- Unknown bridge name or slug returns an error or empty result
- Bridge not covered by DefiLlama returns no data
- Misspelled bridge name may fail to resolve even case-insensitively
- DefiLlama upstream outage may cause stale or missing data
- Payment failure (insufficient USDC) results in 402 response

## How this service works

Bridge TVL and per-chain liquidity concentration: total value locked plus the breakdown across chains and the largest single chain's share, from DefiLlama. A liquidity-depth and concentration signal for routing decisions.

## Output

Returns the bridge's total value locked (TVL) in USD, a breakdown of liquidity by individual chain, and the share held by the single largest chain — providing a concentration signal useful for routing decisions and liquidity risk assessment.

## 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/bridge-tvl-per-chain-liquidity-concentration-4a20d92d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from payai.agentstools.dev](https://www.zero.xyz/host/payai.agentstools.dev/llms.txt)