Habeas

Habeas was an email reputation and deliverability services provider that helped legitimate senders monitor and manage their sending reputation to maximize inbox deliverability, using a trademark-based accreditation and safelist model to certify permission-based email. Founded in the mid-2000s and backed by Canaan Partners through a Series B round, Habeas was acquired by Return Path in 2008 (habeas.com now redirects to returnpath.com); Return Path was in turn acquired by Validity in 2019. The company is defunct as an independent brand and publishes no live public API or developer surface, so this profile is retained as a Canaan Partners portfolio-history record rather than an active API provider.

Habeas is profiled on the APIs.io network. Tagged areas include Company, Email, Email Deliverability, Email Reputation, and Sender Reputation.

🌐 Visit website 📡 Source on GitHub

6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyEmailEmail DeliverabilityEmail ReputationSender ReputationEmail MarketingAccreditationDefunctAcquired

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 6.8/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 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/habeas: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Source (apis.yml)

aid: habeas
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/habeas.png
name: Habeas
description: Habeas was an email reputation and deliverability services provider that helped legitimate senders monitor and
  manage their sending reputation to maximize inbox deliverability, using a trademark-based accreditation and safelist model
  to certify permission-based email. Founded in the mid-2000s and backed by Canaan Partners through a Series B round, Habeas
  was acquired by Return Path in 2008 (habeas.com now redirects to returnpath.com); Return Path was in turn acquired by Validity
  in 2019. The company is defunct as an independent brand and publishes no live public API or developer surface, so this profile
  is retained as a Canaan Partners portfolio-history record rather than an active API provider.
url: https://raw.githubusercontent.com/api-evangelist/habeas/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- canaan-partners
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-status-detail: Acquired by Return Path (2008); Return Path later acquired by Validity (2019). habeas.com redirects to returnpath.com.
  No live independent API or developer surface.
x-is-api-provider: false
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Email
- Email Deliverability
- Email Reputation
- Sender Reputation
- Email Marketing
- Accreditation
- Defunct
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence