Onymos

Onymos DocEnhance API

Asynchronous document-image enhancement REST API. POST /api/enhance accepts a base64-encoded image plus a preset (document, auto-crop, photo or watermark) and returns a result_url immediately; GET /api/enhance/results/{UUID} collects the enhanced image as a base64 data URI. Presets remove shadows, wrinkles, speckle noise and non-solid watermarks, auto-crop and deskew, and convert to black and white to raise OCR accuracy and human-in-the-loop verification. Requests are authorised with an onymosIesAuthToken request header. This is the only network API Onymos documents publicly; every other Onymos Feature is consumed as an in-process SDK object.

GitHub

Documentation

📖
APIReference
https://onymos.com/api/onymos-docenhance-endpoints/
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/onymos/refs/heads/main/authentication/onymos-authentication.yml

Other Resources

🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/onymos/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
name: Onymos DocEnhance API
description: Asynchronous document-image enhancement REST API. POST /api/enhance accepts a base64-encoded
  image plus a preset (document, auto-crop, photo or watermark) and returns a result_url immediately;
  GET /api/enhance/results/{UUID} collects the enhanced image as a base64 data URI. Presets remove shadows,
  wrinkles, speckle noise and non-solid watermarks, auto-crop and deskew, and convert to black and white
  to raise OCR accuracy and human-in-the-loop verification. Requests are authorised with an onymosIesAuthToken
  request header. This is the only network API Onymos documents publicly; every other Onymos Feature is
  consumed as an in-process SDK object.
humanURL: https://onymos.com/api/onymos-docenhance-endpoints/
x-baseURL-status: not-published
x-baseURL-note: 'Onymos does not state a base host anywhere in the DocEnhance endpoint reference. The
  only host evidence available is indirect and unusable as a base: the published example result_url is
  the path "/ies/api/enhance/results/{UUID}" (note the /ies prefix the reference never explains), and
  api.onymos.com resolves via CNAME to onymosapiloadbalancer-154243126.us-west-2.elb.amazonaws.com but
  returned HTTP 503 with an empty body on every path probed on 2026-08-26, including /ies/api/enhance.
  Recording baseURL as missing rather than guessing api.onymos.com from the domain, per the enrichment
  contract.'
tags:
- Document Processing
- Image Enhancement
- OCR
- Intelligent Document Processing
- Asynchronous
properties:
- type: APIReference
  url: https://onymos.com/api/onymos-docenhance-endpoints/
- type: Authentication
  url: authentication/onymos-authentication.yml