Handoff

Handoff is an AI-native construction management and estimating platform built for residential contractors — remodelers, home builders, handymen, and trade contractors. It handles estimating, AI takeoffs, proposals, project management, scheduling, CRM, change orders, invoicing, and financial management end-to-end, generating detailed, localized estimates in seconds from descriptions, photos, drawings, or voice. Built by 1build and backed by Initialized Capital, Greycroft, Y Combinator, and Masco Ventures, Handoff serves 10,000+ monthly active users managing billions in annualized residential construction projects. Handoff does not currently expose a public developer API; it offers a Zapier integration for connected workflows, with an API on its public roadmap.

Handoff is profiled on the APIs.io network. Tagged areas include Company, Construction, Construction Management, Estimating, and Takeoffs.

Handoff’s developer surface includes pricing, signup flow, support, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

17.7/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyConstructionConstruction ManagementEstimatingTakeoffsContractorsArtificial IntelligenceProject ManagementCRMField Service

Kin Score

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

Composite quality — 17.7/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 0.7 / 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/handoff: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

Roadmap

Roadmap

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)

aid: handoff
name: Handoff
description: Handoff is an AI-native construction management and estimating platform built for residential contractors — remodelers,
  home builders, handymen, and trade contractors. It handles estimating, AI takeoffs, proposals, project management, scheduling,
  CRM, change orders, invoicing, and financial management end-to-end, generating detailed, localized estimates in seconds
  from descriptions, photos, drawings, or voice. Built by 1build and backed by Initialized Capital, Greycroft, Y Combinator,
  and Masco Ventures, Handoff serves 10,000+ monthly active users managing billions in annualized residential construction
  projects. Handoff does not currently expose a public developer API; it offers a Zapier integration for connected workflows,
  with an API on its public roadmap.
url: https://raw.githubusercontent.com/api-evangelist/handoff/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- initialized-capital
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://www.handoff.ai/favicon.ico
tags:
- Company
- Construction
- Construction Management
- Estimating
- Takeoffs
- Contractors
- Artificial Intelligence
- Project Management
- CRM
- Field Service
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://handoff.ai/
- type: Pricing
  url: https://www.handoff.ai/pricing
- type: SignUp
  url: https://app.handoff.ai/sign-up/
- type: Login
  url: https://app.handoff.ai/login/
- type: Support
  url: https://help.handoff.ai
- type: Blog
  url: https://www.handoff.ai/blog
- type: Roadmap
  url: https://handoff.featurebase.app/roadmap
- type: TermsOfService
  url: https://www.handoff.ai/terms-of-use
- type: PrivacyPolicy
  url: https://www.handoff.ai/privacy-policy
- type: LLMsTxt
  url: llms/handoff-llms.txt
- type: DomainSecurity
  url: security/handoff-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence