# Oblique Markets Endpoint Task Evaluation

> Oblique Markets Endpoint Task Evaluation is a paid API for AI agents from api.oblique.markets, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Evaluates a single x402-gated endpoint request and payment flow to assess task quality and integration correctness

## Facts

- Endpoint: POST https://api.oblique.markets/api/v1/paid/endpoint-task-evaluation?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/oblique-markets-endpoint-task-evaluation-a6a68b45
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WlBCy-o6aUxVz7p7VHs-S

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-endpoint-task-evaluation-a6a68b45 -d '<json body>'
```

Example prompt: Can you evaluate this x402 endpoint task and payment flow I've set up — here's the request payload — and tell me if it's correct and what score it gets?

## When to prefer this

Use this endpoint when you need to programmatically evaluate a single x402 endpoint task and its associated payment flow — particularly when validating integration correctness before listing on the x402 Bazaar, debugging payment configuration issues, or assessing task quality scores. It is purpose-built for x402 protocol evaluation and payment-flow analysis, unlike general API testing tools.

## Known failure modes

- Invalid or malformed request payload returns a 400 error
- Payment not received or incorrect USDC amount causes rejection
- Endpoint URL unreachable or misconfigured results in evaluation failure
- Missing required x402 payment headers cause authentication errors
- Rate limiting or quota exceeded returns a 429 error

## How this service works

Use when an agent wants to test a third-party endpoint for a 402 challenge, latency and response shape without paying it. Returns One bounded x402 endpoint request and payment-flow evaluation. $0.01.

## Output

Returns a structured evaluation of the submitted x402 endpoint task and payment flow, including a quality score, pass/fail verdict, and feedback on correctness of the request and payment configuration.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "body": {},
  "method": {
   "type": "string"
  },
  "headers": {
   "type": "object"
  },
  "target_url": {
   "type": "string"
  },
  "task_assertions": {
   "type": "object"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "status": 200,
  "tested_at": "2026-01-01T00:00:00.000Z",
  "latency_ms": 120,
  "schema_errors": [],
  "failure_reason": null,
  "response_valid": true,
  "payment_accepted": false,
  "payment_required": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/oblique-markets-endpoint-task-evaluation-a6a68b45/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)