# mart402 OCR – Dual-Engine Consensus Image-to-Text with Hallucination Guard

> mart402 OCR – Dual-Engine Consensus Image-to-Text with Hallucination Guard is a paid API for AI agents from mart402.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Converts images to text using dual-engine consensus OCR with calibrated confidence scoring and per-segment hallucination detection, with strong Japanese-language support.

## Facts

- Endpoint: POST https://mart402.com/v1/ocr
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mart402-ocr-dual-engine-consensus-image-to-text-with-hallucination-2946b944
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B27DwdoPsplNgrawKVUIs

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 mart402-ocr-dual-engine-consensus-image-to-text-with-hallucination-2946b944 -d '<json body>'
```

Example prompt: Can you extract all the text from this scanned Japanese invoice image and tell me how confident you are in the result, flagging any parts that might be hallucinated?

## When to prefer this

Choose this endpoint when OCR accuracy is critical and you need more than raw text — especially when hallucination detection, calibrated confidence per segment, and dual-engine consensus are required for downstream trust decisions. Particularly strong for Japanese-language documents. Prefer over generic OCR when the cost of an OCR error is high (e.g., invoices, legal documents, data entry pipelines).

## Known failure modes

- Image URL unreachable or returns non-image content — returns error with no text output
- Low-resolution or heavily degraded image — returns text with low confidence scores and multiple hallucination flags
- Unsupported image format — returns format error
- Ambiguous or stylized fonts with very low consensus — returns partial text with high hallucination flag rate
- Payment not included or insufficient — returns 402 Payment Required

## How this service works

OCR image to text with hallucination guard: dual-engine consensus, calibrated confidence, per-segment corroboration. Japanese-strong (latin too). Flat 0.005/image.

## Output

Returns a JSON object containing: the full extracted text, an ocr_quality object with calibrated confidence scores and hallucination flags per segment, and a dual-engine consensus verdict indicating agreement or divergence between the two OCR engines.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mart402-ocr-dual-engine-consensus-image-to-text-with-hallucination-2946b944/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mart402.com](https://www.zero.xyz/host/mart402.com/llms.txt)