# Oblique Markets Browser Evidence Endpoint

> Oblique Markets Browser Evidence Endpoint is a paid API for AI agents from api.oblique.markets, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Executes a single browser action and returns AEP-compatible cryptographically verified evidence of what the browser observed

## Facts

- Endpoint: POST https://api.oblique.markets/api/v1/paid/evidence/browser
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/oblique-markets-browser-evidence-endpoint-96514253
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_d1msLSEBl71HMv-3FQqjv

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 oblique-markets-browser-evidence-endpoint-96514253 -d '<json body>'
```

Example prompt: Go to etherscan.io and check the current ETH price shown on the homepage, then give me AEP-compatible verified evidence of what you saw so I can use it in an on-chain claim.

## When to prefer this

Choose this endpoint when you need not just the raw content of a web page but cryptographically verifiable proof that a browser observed specific content — particularly for on-chain claims, prediction market resolution, agent-to-agent trust, or compliance workflows requiring AEP-compatible attestation. Prefer this over generic web scraping endpoints when the downstream consumer needs to verify the evidence independently rather than trust the caller.

## Known failure modes

- Target URL is inaccessible or returns an error — evidence cannot be generated
- Browser action specification is malformed or unsupported — 400-level error returned
- Page content is dynamic/JavaScript-rendered and action times out before completion
- Target site blocks headless browsers or returns a bot-detection challenge
- x402 payment not satisfied — endpoint returns 402 before executing action
- AEP attestation generation fails due to internal signing error

## How this service works

Use when an agent needs browser. Returns Run one headless browser action and return a verified evidence record. $0.02.

## Output

Returns an AEP-compatible verified evidence object containing the result of the browser action (e.g. extracted text, DOM snapshot, or page state) along with a cryptographic attestation proving the browser observed that content at the time of the call. The evidence package is structured for use in agent pipelines, smart contracts, or compliance workflows that require tamper-evident proof of web observations.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string"
  },
  "action": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "enum": [
      "click",
      "type",
      "goto"
     ],
     "type": "string"
    },
    "value": {
     "type": "string"
    },
    "selector": {
     "type": "string"
    }
   }
  },
  "expected": {
   "type": "object",
   "properties": {
    "selector": {
     "type": "string"
    },
    "text_contains": {
     "type": "string"
    }
   }
  },
  "request_id": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "status": "verified",
  "final_url": "https://example.com/",
  "timestamp": "2026-08-14T17:00:00.000Z",
  "artifact_hash": "sha256:artifact...",
  "observed_text": "Example Domain",
  "request_digest": "sha256:request...",
  "expected_matched": true,
  "evidence_protocol": "AEP-1.0",
  "payment_reference": {
   "tx_hash": "0xabc...",
   "chain_id": 8453,
   "amount_usdc": 0.02
  },
  "action_trace_digest": "sha256:trace...",
  "verification_status": "verified"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/oblique-markets-browser-evidence-endpoint-96514253/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.oblique.markets](https://www.zero.xyz/host/api.oblique.markets/llms.txt)