Perfectbit Inc

PerfectBit, Inc. is a Y Combinator-backed company that produces high-quality, verifier-grounded training data for frontier AI models. Rather than relying on human annotators alone, PerfectBit generates and verifies data against external ground-truth sources - formal proof systems, physics and scientific simulators, executable tests, and oracle databases - across text, code, image, audio, and video. Its stated goal is to let AI labs "train on reality, not noise." The company operates as a B2B data provider engaged in pilot work with frontier AI labs, and does not currently publish a public API, developer platform, SDK, or documentation surface.

Perfectbit Inc is profiled on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Machine-Learning, Training Data, and Data Verification.

🌐 Visit website 📡 Source on GitHub

5.7/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Artificial Intelligence Machine-Learning Training Data Data Verification Y Combinator

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 5.7/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 0.0 / 20

Access Clarity 0.0 / 20

Operational Transparency 0.0 / 13

Contract Governance 0.0 / 12

Discoverability 5.7 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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Security Posture 1

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

Perfectbit Inc Domain Security

TLSv1.3 · HSTS · 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)

aid: perfectbit-inc
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
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/perfectbit-inc.png
name: Perfectbit Inc
description: PerfectBit, Inc. is a Y Combinator-backed company that produces high-quality, verifier-grounded training data
  for frontier AI models. Rather than relying on human annotators alone, PerfectBit generates and verifies data against external
  ground-truth sources - formal proof systems, physics and scientific simulators, executable tests, and oracle databases -
  across text, code, image, audio, and video. Its stated goal is to let AI labs "train on reality, not noise." The company
  operates as a B2B data provider engaged in pilot work with frontier AI labs, and does not currently publish a public API,
  developer platform, SDK, or documentation surface.
url: https://raw.githubusercontent.com/api-evangelist/perfectbit-inc/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
x-website: https://perfectbit.ai
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Artificial Intelligence
- Machine-Learning
- Training Data
- Data Verification
- Y Combinator
tags_raw:
- Company
- Artificial Intelligence
- Machine Learning
- Training Data
- Data Verification
- Y Combinator
apis: []
common:
- type: DomainSecurity
  url: security/perfectbit-inc-domain-security.yml
- type: Website
  url: https://perfectbit.ai
- type: LLMsTxt
  url: llms/perfectbit-inc-llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 0
  pass: local-v1

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