EchoMark

EchoMark is an information-security company that embeds unique, invisible forensic watermarks — different for every recipient — into emails, documents, images, screen captures, and file-share links, so that when internal information leaks the exposed copy can be traced back to the individual it was released to. Products include EchoMark Screen (screenshot/photo watermarking), watermarked email communications with AI rephrasing, secure File Share, and Chroma (invisible) and Luma (print-resistant) image watermarking. The EchoMark API lets organizations embed forensic watermarking and automate leak detection across their own applications and workflows, with API clients created self-service in the EchoMark web application.

EchoMark publishes 1 API on the APIs.io network. Tagged areas include Company, Security, Information Security, Forensic Watermarking, and Insider Threat.

EchoMark’s developer surface includes documentation, API reference, support, engineering blog, pricing, signup flow, authentication, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub
31.4/100 thin Agent 10/100 human only Full breakdown ↓
scored 2026-07-20 · rubric v0.4
1 APIs 0 Features
CompanySecurityInformation SecurityForensic WatermarkingInsider ThreatData Loss PreventionLeak Detection

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 31.4/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 8.3 / 20
Commercial Clarity 10.5 / 20
Operational Transparency 3.4 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 10/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/echomark: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs

EchoMark API

Embed forensic watermarking into applications, internal tools, and custom workflows, and programmatically retrieve forensic results to identify leaked artifacts and attribute wh...

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 SignUp
SignUp
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Lifecycle
Lifecycle

Access & Security 5

Authentication, authorization, and security posture

Security
Security
 Compliance
Compliance
 Authentication
Authentication
 DomainSecurity
DomainSecurity
 VulnerabilityDisclosure
VulnerabilityDisclosure

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: echomark
name: EchoMark
description: EchoMark is an information-security company that embeds unique, invisible forensic watermarks — different for
  every recipient — into emails, documents, images, screen captures, and file-share links, so that when internal information
  leaks the exposed copy can be traced back to the individual it was released to. Products include EchoMark Screen (screenshot/photo
  watermarking), watermarked email communications with AI rephrasing, secure File Share, and Chroma (invisible) and Luma (print-resistant)
  image watermarking. The EchoMark API lets organizations embed forensic watermarking and automate leak detection across their
  own applications and workflows, with API clients created self-service in the EchoMark web application.
url: https://raw.githubusercontent.com/api-evangelist/echomark/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- craft-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://assets-global.website-files.com/64f5db58df7028173fc605ca/6508c74e004a4f9ab6f9de3a_Announcing%20EchoMark.jpg
tags:
- Company
- Security
- Information Security
- Forensic Watermarking
- Insider Threat
- Data Loss Prevention
- Leak Detection
apis:
- name: EchoMark API
  description: Embed forensic watermarking into applications, internal tools, and custom workflows, and programmatically retrieve
    forensic results to identify leaked artifacts and attribute which recipient's marked copy was exposed.
  humanURL: https://www.echomark.com/product/api
  baseURL: https://api.echomark.com
  properties:
  - type: Authentication
    url: authentication/echomark-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://echomark.com
- type: DeveloperPortal
  url: https://support.echomark.com
- type: Documentation
  url: https://support.echomark.com/hc/en-us/sections/48912786989332-EchoMark-API
- type: APIReference
  url: https://www.echomark.com/product/api
- type: Support
  url: https://support.echomark.com
- type: Blog
  url: https://www.echomark.com/blog
- type: Pricing
  url: https://www.echomark.com/pricing
- type: SignUp
  url: https://www.echomark.com/sign-up
- type: Login
  url: https://app.echomark.com/login
- type: TermsOfService
  url: https://www.echomark.com/terms-of-services
- type: PrivacyPolicy
  url: https://www.echomark.com/privacy-statement
- type: StatusPage
  url: https://echomark.statuspage.io/
- type: Security
  url: https://www.echomark.com/security
- type: Compliance
  url: https://www.echomark.com/security
- type: Authentication
  url: authentication/echomark-authentication.yml
- type: Conformance
  url: conformance/echomark-conformance.yml
- type: Lifecycle
  url: lifecycle/echomark-lifecycle.yml
- type: DomainSecurity
  url: security/echomark-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/echomark-vulnerability-disclosure.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence