Trustid

TRUSTID was a Portland, Oregon telephone caller-authentication and call-center anti-fraud company led by CEO Patrick Cox, authenticating inbound callers pre-answer without knowledge-based interrogation of the caller. Surfaced as a portfolio company of Norwest Venture Partners and Trinity Ventures, TRUSTID was acquired by Neustar (closed January 2019), and Neustar was itself acquired by TransUnion in December 2021, where the caller-authentication capability lives on in Trusted Call Solutions. TRUSTID no longer operates independently and publishes no public API surface — trustid.com is unresponsive and www.trustid.com returns HTTP 503 from Neustar redirect infrastructure.

Trustid is profiled on the APIs.io network. Tagged areas include Company, Caller Authentication, Identity, Fraud Prevention, and Call Centers.

🌐 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
CompanyCaller AuthenticationIdentityFraud PreventionCall CentersTelecommunicationsAcquired

Kin Score

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

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Trustid Domain Security

DMARC

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: trustid
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/trustid.png
name: Trustid
description: TRUSTID was a Portland, Oregon telephone caller-authentication and call-center anti-fraud company led by CEO
  Patrick Cox, authenticating inbound callers pre-answer without knowledge-based interrogation of the caller. Surfaced as
  a portfolio company of Norwest Venture Partners and Trinity Ventures, TRUSTID was acquired by Neustar (closed January 2019),
  and Neustar was itself acquired by TransUnion in December 2021, where the caller-authentication capability lives on in Trusted
  Call Solutions. TRUSTID no longer operates independently and publishes no public API surface — trustid.com is unresponsive
  and www.trustid.com returns HTTP 503 from Neustar redirect infrastructure.
url: https://raw.githubusercontent.com/api-evangelist/trustid/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
- trinity-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
x-status: acquired
x-enrichment:
  date: '2026-07-21'
  status: minimal
  artifacts_added: 1
  pass: local-v1
x-acquired-by: neustar (2019), now part of transunion (2021)
tags:
- Company
- Caller Authentication
- Identity
- Fraud Prevention
- Call Centers
- Telecommunications
- Acquired
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/trustid-domain-security.yml
- type: LLMsTxt
  url: llms/trustid-llms.txt
- type: Website
  url: https://trustid.com