# SqueezeOS Truth Verify — Cross-Checked Market Data Verification

> SqueezeOS Truth Verify — Cross-Checked Market Data Verification is a paid API for AI agents from squeezeos-api.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Cross-checks and verifies market data for a given ticker symbol against multiple live providers to produce evidence-backed, hallucination-resistant financial facts.

## Facts

- Endpoint: GET https://squeezeos-api.onrender.com/api/truth/verify/%7Bsymbol%7D
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/squeezeos-truth-verify-cross-checked-market-data-verification-b942976b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_q7CLhj197VZebsA_LEsmQ

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 squeezeos-truth-verify-cross-checked-market-data-verification-b942976b
```

Example prompt: Can you verify the market data for AAPL using cross-checked sources so I know the information is evidence-backed and not hallucinated?

## When to prefer this

Choose this endpoint when you need evidence-backed, multi-source verified market data rather than a raw price quote — especially when defending against AI hallucinations, auditing LLM-generated financial content, or when provenance and proof of accuracy are required. Prefer over a simple quote endpoint when the goal is verification and attestation, not just retrieval.

## Known failure modes

- Invalid or unrecognized ticker symbol (pattern mismatch) returns an error
- Symbol not covered by available live providers results in incomplete verification
- Upstream live provider unavailability may degrade cross-check quality
- Rate limiting or payment failure prevents endpoint access
- Symbol format violates the ^[A-Z0-9.]{1,10}$ pattern constraint

## How this service works

SCRIPTMASTERLABS SqueezeOS: agent-native APIs, MCP discovery, verifiable x402 payments, market intelligence, and machine-commerce infrastructure. Truth First. Proof Always. Pay Only for Accepted Delivery.

## Output

Returns a JSON object containing the verified symbol, product name, list of live data providers used for cross-checking, and the cross-verified market data result. The 'verification' field contains evidence-backed market data confirmed across multiple providers, giving the agent a provenance-traceable, hallucination-resistant financial fact.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "symbol": {
       "type": "string",
       "pattern": "^[A-Z0-9.]{1,10}$",
       "description": "Ticker symbol mirrored from the URL path for Bazaar discovery Search intents: fact verification api, fact verification, truth check api, market data verification, evidence backed, hallucination defense."
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object"
    }
   },
   "additionalProperties": false
  }
 },
 "additionalProperties": false
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "status": "ready",
  "symbol": "AAPL",
  "product": "SML Truth Verify",
  "providers": [
   "<live-provider>"
  ],
  "verification": "<cross-checked-market-data>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/squeezeos-truth-verify-cross-checked-market-data-verification-b942976b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from squeezeos-api.onrender.com](https://www.zero.xyz/host/squeezeos-api.onrender.com/llms.txt)