# StableIntel Supply

> StableIntel Supply is a paid API for AI agents from payai.agentstools.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-15).

Returns circulating supply data for a requested stablecoin, including per-chain balances and on-chain verification details.

## Facts

- Endpoint: GET https://payai.agentstools.dev/stablecoin/supply
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stableintel-supply-d2138bfe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QPFZOm3d5KxVIk9OHxMgC

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 stableintel-supply-d2138bfe
```

Example prompt: What is the current circulating supply of USDC, broken down by chain? Show me the on-chain verification details too.

## When to prefer this

Choose this endpoint when you need live circulating supply data for a stablecoin with per-chain granularity and on-chain verification. It is particularly useful for DeFi analytics, risk monitoring, or auditing stablecoin distribution across chains. Prefer this over generic token info endpoints when you specifically need supply broken down by chain with cross-chain verification.

## Known failure modes

- Unknown stablecoin symbol or ID returns an error or empty result
- Invalid contract address format causes a bad request
- Unsupported chain name may result in missing per-chain data
- DefiLlama or on-chain data source temporarily unavailable causing stale or missing data
- Rate limiting or payment failure (x402) if USDC payment not correctly attached

## How this service works

Returns stablecoin supply data across supported networks.

## Output

Returns the total circulating supply of the requested stablecoin, per-chain balance breakdown showing how supply is distributed across different blockchains, and on-chain verification details confirming the data against on-chain state.

## 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": [],
     "properties": {
      "chain": {
       "type": "string",
       "description": "Chain to prefer for the on-chain cross-check"
      },
      "symbol": {
       "type": "string",
       "description": "Stablecoin ticker or DefiLlama id"
      },
      "address": {
       "type": "string",
       "description": "Contract address (alternative)"
      }
     }
    }
   },
   "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/stableintel-supply-d2138bfe/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)