# GENESIS Agent Tools — Crypto Price Consensus Verifier (Dexter Facilitator)

> GENESIS Agent Tools — Crypto Price Consensus Verifier (Dexter Facilitator) is a paid API for AI agents from genesis-agent-tools.genesisagenttools.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-01).

Verifies and cross-checks cryptocurrency price consensus for a given token/contract across sources, returning evidence and warnings via pay-per-call x402 API.

## Facts

- Endpoint: POST https://genesis-agent-tools.genesisagenttools.workers.dev/api/flagships/verify-crypto-price-consensus/facilitator/dexter?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/genesis-agent-tools-crypto-price-consensus-verifier-dexter-facilitator-385d85df
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Inau2R5XCbHAdCQ9kVz5O

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 genesis-agent-tools-crypto-price-consensus-verifier-dexter-facilitator-385d85df -d '<json body>'
```

Example prompt: Can you do a quick consensus check on the price for ETH on Ethereum — I want to know if the price data is consistent across sources and whether there are any warnings?

## When to prefer this

Choose this endpoint when you need to verify or cross-validate a cryptocurrency's price across multiple sources before acting on it, especially for DeFi tokens or contracts where price manipulation or data inconsistency is a concern. It is particularly useful for agents that need a trust signal on price data before executing trades, reporting prices, or flagging anomalies — and that can pay per-call in USDC via x402.

## Known failure modes

- Invalid or unsupported chain identifier returns an error
- Unknown symbol with no market data returns empty result or warnings
- Malformed contract address causes validation failure
- Payment not fulfilled via x402 results in 402 Payment Required response
- Deep tier may time out for low-liquidity tokens with sparse data

## How this service works

Pay-per-call x402 APIs for autonomous agents on Base USDC: API compatibility analysis, bounded HTTP/JSON workflows, URL evidence analysis, crypto price consensus, and agent/MCP readiness checks.

## Output

Returns a JSON object with ok status, the analysis tier used (quick or deep), a result object with consensus findings, a product label ('asset-intelligence'), an evidence array of supporting sources, and a warnings array of any detected anomalies or discrepancies.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tier": {
   "enum": [
    "quick",
    "deep"
   ],
   "type": "string"
  },
  "input": {
   "type": "object",
   "properties": {
    "chain": {
     "type": "string"
    },
    "symbol": {
     "type": "string"
    },
    "contract": {
     "type": "string"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tier": "quick",
  "result": {},
  "product": "asset-intelligence",
  "evidence": [],
  "warnings": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/genesis-agent-tools-crypto-price-consensus-verifier-dexter-facilitator-385d85df/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from genesis-agent-tools.genesisagenttools.workers.dev](https://www.zero.xyz/host/genesis-agent-tools.genesisagenttools.workers.dev/llms.txt)