# PoolProof Yield Pool Safety Checker

> PoolProof Yield Pool Safety Checker is a paid API for AI agents from poolproof.ru, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Analyzes a DeFi yield pool for safety risks including asset peg stability, yield sustainability, emission dependence, and exit liquidity depth

## Facts

- Endpoint: POST https://poolproof.ru/v1/pool
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/poolproof-yield-pool-safety-checker-3522fc75
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eJsjXpT_KQBuZ75AhALQv

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 poolproof-yield-pool-safety-checker-3522fc75 -d '<json body>'
```

Example prompt: Check if the Curve 3pool on Ethereum is safe to deposit into — I want to know about peg stability of the underlying assets, whether the yield is sustainable or just emissions-driven, and how deep the exit liquidity is.

## When to prefer this

Use this endpoint when you need a multi-dimensional DeFi pool safety assessment combining peg stability, yield history, emission dependence, and exit liquidity in a single call — rather than querying separate price feeds, TVL dashboards, or emission trackers individually. Ideal for pre-deposit due diligence workflows or automated risk screening of yield opportunities.

## Known failure modes

- Unknown or unsupported pool address returns error or incomplete data
- Pool on unsupported chain may return no results
- Very new pools with insufficient history may lack yield sustainability data
- Missing required pool identifier in request body causes validation error
- Network or provider outage may return non-OK response

## How this service works

Yield pool safety: peg of every underlying asset, yield sustainability, emission dependence, exit depth

## Output

Returns a JSON object with an 'ok' boolean, a 'verdict' string summarizing the overall safety assessment, an array of 'flags' (each with a code and message) — possible flags include DEPEG (asset off peg), OPAQUE (non-transparent structure), SPIKE (abnormal yield spike), UNSTABLE (historically volatile yield), EMISSION (yield is emission-dependent), and THIN (shallow exit liquidity) — and a 'disclaimer' string. An empty flags array means the pool passed all checks.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "schema": {
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
   "ok": {
    "type": "boolean"
   },
   "flags": {
    "type": "array",
    "items": {
     "type": "object",
     "properties": {
      "msg": {
       "type": "string"
      },
      "code": {
       "type": "string"
      }
     }
    },
    "description": "Empty means nothing failed the checks"
   },
   "verdict": {
    "type": "string"
   },
   "disclaimer": {
    "type": "string"
   }
  }
 },
 "description": "Peg of every underlying asset, yield vs its own history, emission dependence and exit depth. Flags DEPEG, OPAQUE, SPIKE, UNSTABLE, EMISSION, THIN."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/poolproof-yield-pool-safety-checker-3522fc75/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from poolproof.ru](https://www.zero.xyz/host/poolproof.ru/llms.txt)