Duckbill

Duckbill is an AI-plus-human task-completion service that executes the real-world errands people avoid: fighting refunds, disputes and billing errors, cancelling services, researching vendors and getting quotes, and booking appointments and reservations. It pairs AI planning with background-checked human "doers" who make the phone calls and handle the red tape, accepting requests by text, email, forwarded message, or app. Duckbill exposes this execution layer to AI agents through a hosted MCP (Model Context Protocol) server — "Connect to Claude" — plus platform API and CLI access, so developers can plug real human follow-through into any AI workflow. Backed by Forerunner Ventures, General Catalyst, and Uncork Capital.

Duckbill is profiled on the APIs.io network. Tagged areas include Company, Consumer, AI Assistant, Personal Assistant, and Task Automation.

Duckbill’s developer surface includes documentation, authentication, engineering blog, pricing, signup flow, support, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

24.4/100 emerging ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessSelf serve

0 APIs 1 MCP Servers

CompanyConsumerAI AssistantPersonal AssistantTask AutomationAgentsMCPConcierge

Kin Score

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

Composite quality — 24.4/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 8.7 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 12 / 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 4 / 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/duckbill: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Duckbill Scopes

6 scopes · authorizationCode

6 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

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: duckbill
name: Duckbill
description: 'Duckbill is an AI-plus-human task-completion service that executes the real-world errands people avoid: fighting
  refunds, disputes and billing errors, cancelling services, researching vendors and getting quotes, and booking appointments
  and reservations. It pairs AI planning with background-checked human "doers" who make the phone calls and handle the red
  tape, accepting requests by text, email, forwarded message, or app. Duckbill exposes this execution layer to AI agents through
  a hosted MCP (Model Context Protocol) server — "Connect to Claude" — plus platform API and CLI access, so developers can
  plug real human follow-through into any AI workflow. Backed by Forerunner Ventures, General Catalyst, and Uncork Capital.'
url: https://raw.githubusercontent.com/api-evangelist/duckbill/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- forerunner-ventures
- general-catalyst
- uncork-capital
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://getduckbill.com/preview.png
tags:
- Company
- Consumer
- AI Assistant
- Personal Assistant
- Task Automation
- Agents
- MCP
- Concierge
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://getduckbill.com
- type: DeveloperPortal
  url: https://getduckbill.com/platform
- type: Documentation
  url: https://getduckbill.com/platform
- type: MCPServer
  url: mcp/duckbill-mcp.yml
- type: Authentication
  url: authentication/duckbill-authentication.yml
- type: OAuthScopes
  url: scopes/duckbill-scopes.yml
- type: WellKnown
  url: well-known/duckbill-well-known.yml
- type: DomainSecurity
  url: security/duckbill-domain-security.yml
- type: LLMsTxt
  url: llms/duckbill-llms.txt
- type: Blog
  url: https://research.getduckbill.com/
- type: Pricing
  url: https://getduckbill.com/pricing
- type: SignUp
  url: https://app.getduckbill.com/sign-up
- type: Login
  url: https://app.getduckbill.com/login
- type: TermsOfService
  url: https://getduckbill.com/terms
- type: PrivacyPolicy
  url: https://getduckbill.com/privacy
- type: Support
  url: mailto:support@getduckbill.com
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence