Delphi website screenshot

Delphi

Delphi is an AI platform for building "Digital Minds" — hyper-realistic AI clones trained exclusively on a person's own content (podcasts, videos, blogs, long-form writing, live feeds) that match how they speak, write, and think. Audiences can call, text, or video-chat a clone 24/7 for Q&A, coaching, mentorship, and engagement, with omnichannel reach across websites, SMS, Telegram, Slack, and learning platforms like Kajabi and Thinkific. Delphi's v3 REST API (Immortal plan) lets developers embed a Digital Mind directly in their own app: create conversations, stream text and voice responses, manage the audience and its contextual memory, organize contacts with tags, search the clone's knowledge base for RAG, track per-user usage, and receive events via signed webhooks. Delphi is backed by Menlo Ventures.

Delphi publishes 8 APIs on the APIs.io network, including Audience API, Clone API, Conversations API, and 5 more. Tagged areas include Company, Artificial Intelligence, AI Clones, Digital Minds, and Conversational AI.

The Delphi catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Delphi’s developer surface includes documentation, API reference, getting-started guide, authentication, changelog, support, engineering blog, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub
41.8/100 thin ▬ flat Agent 44/100 agent ready Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1
AccessSelf serve
8 APIs 1 MCP Servers
CompanyArtificial IntelligenceAI ClonesDigital MindsConversational AIVoiceSearchRAGKnowledge BaseCreator EconomyWebhooks

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1
Composite quality — 41.8/100 · thin
Contract Quality 6.5 / 25
Developer Ergonomics 11.2 / 20
Commercial Clarity 8.9 / 20
Operational Transparency 5.8 / 13
Governance 1.4 / 12
Discoverability 9.3 / 10
Agent readiness — 44/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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/delphi: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 8

Individual APIs this provider publishes, each with its own machine-readable definition.

Delphi Audience API

Store and manage contextual information about users in your audience.

Delphi Clone API

Retrieve your clone's public profile information.

Delphi Conversations API

Create conversations, stream responses, view history, and manage conversation lifecycle.

Delphi Questions API

Retrieve suggested questions configured for your clone.

Delphi Search API

Search your clone's digital mind for relevant chunks or content.

Delphi Tags API

Create tags and organize your audience.

Delphi Usage API

Track consumption metrics and access tiers for your users.

Delphi Voice API

Stream voice responses and synthesize speech as real-time PCM audio.

Scroll for all 8

MCP Servers 1

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

delphi-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Delphi Webhooks

ASYNCAPI

Security Posture 2

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

Delphi Authentication

apiKey · 1 scheme

SECURITY

Delphi Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Delphi Agentic Access

25 operations · 16 acting

25 operations · 16 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 Webhooks
Webhooks
 DataModel
DataModel
 Components
Components

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Operate 3

Status, limits, changes, and where to get help

StatusPage
StatusPage
 ChangeLog
ChangeLog
 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

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: delphi
name: Delphi
description: 'Delphi is an AI platform for building "Digital Minds" — hyper-realistic AI clones trained exclusively on a person''s
  own content (podcasts, videos, blogs, long-form writing, live feeds) that match how they speak, write, and think. Audiences
  can call, text, or video-chat a clone 24/7 for Q&A, coaching, mentorship, and engagement, with omnichannel reach across
  websites, SMS, Telegram, Slack, and learning platforms like Kajabi and Thinkific. Delphi''s v3 REST API (Immortal plan)
  lets developers embed a Digital Mind directly in their own app: create conversations, stream text and voice responses, manage
  the audience and its contextual memory, organize contacts with tags, search the clone''s knowledge base for RAG, track per-user
  usage, and receive events via signed webhooks. Delphi is backed by Menlo Ventures.'
url: https://raw.githubusercontent.com/api-evangelist/delphi/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- menlo-ventures
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
image: https://avatars.githubusercontent.com/u/120126721?v=4
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Artificial Intelligence
- AI Clones
- Digital Minds
- Conversational AI
- Voice
- Search
- RAG
- Knowledge Base
- Creator Economy
- Webhooks
apis:
- aid: delphi:delphi-audience-api
  name: Delphi Audience API
  description: Store and manage contextual information about users in your audience.
  humanURL: https://docs.delphi.ai/advanced/actions/api-immortal-only
  baseURL: https://api.delphi.ai
  tags:
  - Audience
  properties:
  - type: OpenAPI
    url: openapi/delphi-audience-api-openapi.yml
  - type: Authentication
    url: authentication/delphi-authentication.yml
  - type: Conventions
    url: conventions/delphi-conventions.yml
  - type: ErrorCatalog
    url: errors/delphi-problem-types.yml
  - type: Conformance
    url: conformance/delphi-conformance.yml
  - type: DataModel
    url: data-model/delphi-data-model.yml
  - type: Webhooks
    url: asyncapi/delphi-webhooks.yml
- aid: delphi:delphi-clone-api
  name: Delphi Clone API
  description: Retrieve your clone's public profile information.
  humanURL: https://docs.delphi.ai/advanced/actions/api-immortal-only
  baseURL: https://api.delphi.ai
  tags:
  - Clone
  properties:
  - type: OpenAPI
    url: openapi/delphi-clone-api-openapi.yml
  - type: Authentication
    url: authentication/delphi-authentication.yml
  - type: Conventions
    url: conventions/delphi-conventions.yml
  - type: ErrorCatalog
    url: errors/delphi-problem-types.yml
  - type: Conformance
    url: conformance/delphi-conformance.yml
  - type: DataModel
    url: data-model/delphi-data-model.yml
  - type: Webhooks
    url: asyncapi/delphi-webhooks.yml
- aid: delphi:delphi-conversations-api
  name: Delphi Conversations API
  description: Create conversations, stream responses, view history, and manage conversation lifecycle.
  humanURL: https://docs.delphi.ai/advanced/actions/api-immortal-only
  baseURL: https://api.delphi.ai
  tags:
  - Conversations
  properties:
  - type: OpenAPI
    url: openapi/delphi-conversations-api-openapi.yml
  - type: Authentication
    url: authentication/delphi-authentication.yml
  - type: Conventions
    url: conventions/delphi-conventions.yml
  - type: ErrorCatalog
    url: errors/delphi-problem-types.yml
  - type: Conformance
    url: conformance/delphi-conformance.yml
  - type: DataModel
    url: data-model/delphi-data-model.yml
  - type: Webhooks
    url: asyncapi/delphi-webhooks.yml
- aid: delphi:delphi-questions-api
  name: Delphi Questions API
  description: Retrieve suggested questions configured for your clone.
  humanURL: https://docs.delphi.ai/advanced/actions/api-immortal-only
  baseURL: https://api.delphi.ai
  tags:
  - Questions
  properties:
  - type: OpenAPI
    url: openapi/delphi-questions-api-openapi.yml
  - type: Authentication
    url: authentication/delphi-authentication.yml
  - type: Conventions
    url: conventions/delphi-conventions.yml
  - type: ErrorCatalog
    url: errors/delphi-problem-types.yml
  - type: Conformance
    url: conformance/delphi-conformance.yml
  - type: DataModel
    url: data-model/delphi-data-model.yml
  - type: Webhooks
    url: asyncapi/delphi-webhooks.yml
- aid: delphi:delphi-search-api
  name: Delphi Search API
  description: Search your clone's digital mind for relevant chunks or content.
  humanURL: https://docs.delphi.ai/advanced/actions/api-immortal-only
  baseURL: https://api.delphi.ai
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/delphi-search-api-openapi.yml
  - type: Authentication
    url: authentication/delphi-authentication.yml
  - type: Conventions
    url: conventions/delphi-conventions.yml
  - type: ErrorCatalog
    url: errors/delphi-problem-types.yml
  - type: Conformance
    url: conformance/delphi-conformance.yml
  - type: DataModel
    url: data-model/delphi-data-model.yml
  - type: Webhooks
    url: asyncapi/delphi-webhooks.yml
- aid: delphi:delphi-tags-api
  name: Delphi Tags API
  description: Create tags and organize your audience.
  humanURL: https://docs.delphi.ai/advanced/actions/api-immortal-only
  baseURL: https://api.delphi.ai
  tags:
  - Tags
  properties:
  - type: OpenAPI
    url: openapi/delphi-tags-api-openapi.yml
  - type: Authentication
    url: authentication/delphi-authentication.yml
  - type: Conventions
    url: conventions/delphi-conventions.yml
  - type: ErrorCatalog
    url: errors/delphi-problem-types.yml
  - type: Conformance
    url: conformance/delphi-conformance.yml
  - type: DataModel
    url: data-model/delphi-data-model.yml
  - type: Webhooks
    url: asyncapi/delphi-webhooks.yml
- aid: delphi:delphi-usage-api
  name: Delphi Usage API
  description: Track consumption metrics and access tiers for your users.
  humanURL: https://docs.delphi.ai/advanced/actions/api-immortal-only
  baseURL: https://api.delphi.ai
  tags:
  - Usage
  properties:
  - type: OpenAPI
    url: openapi/delphi-usage-api-openapi.yml
  - type: Authentication
    url: authentication/delphi-authentication.yml
  - type: Conventions
    url: conventions/delphi-conventions.yml
  - type: ErrorCatalog
    url: errors/delphi-problem-types.yml
  - type: Conformance
    url: conformance/delphi-conformance.yml
  - type: DataModel
    url: data-model/delphi-data-model.yml
  - type: Webhooks
    url: asyncapi/delphi-webhooks.yml
- aid: delphi:delphi-voice-api
  name: Delphi Voice API
  description: Stream voice responses and synthesize speech as real-time PCM audio.
  humanURL: https://docs.delphi.ai/advanced/actions/api-immortal-only
  baseURL: https://api.delphi.ai
  tags:
  - Voice
  properties:
  - type: OpenAPI
    url: openapi/delphi-voice-api-openapi.yml
  - type: Authentication
    url: authentication/delphi-authentication.yml
  - type: Conventions
    url: conventions/delphi-conventions.yml
  - type: ErrorCatalog
    url: errors/delphi-problem-types.yml
  - type: Conformance
    url: conformance/delphi-conformance.yml
  - type: DataModel
    url: data-model/delphi-data-model.yml
  - type: Webhooks
    url: asyncapi/delphi-webhooks.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://delphi.ai
- type: DeveloperPortal
  url: https://docs.delphi.ai
- type: Documentation
  url: https://docs.delphi.ai
- type: APIReference
  url: https://docs.delphi.ai/advanced/actions/api-immortal-only
- type: GettingStarted
  url: https://docs.delphi.ai/advanced/actions/api-immortal-only
- type: Authentication
  url: authentication/delphi-authentication.yml
- type: Conventions
  url: conventions/delphi-conventions.yml
- type: ErrorCatalog
  url: errors/delphi-problem-types.yml
- type: Lifecycle
  url: lifecycle/delphi-lifecycle.yml
- type: StatusPage
  url: https://status.delphi.ai
- type: ChangeLog
  url: changelog/delphi-changelog.yml
- type: Conformance
  url: conformance/delphi-conformance.yml
- type: DomainSecurity
  url: security/delphi-domain-security.yml
- type: AgenticAccess
  url: agentic-access/delphi-agentic-access.yml
- type: MCPServer
  url: mcp/delphi-mcp.yml
- type: Webhooks
  url: asyncapi/delphi-webhooks.yml
- type: LLMsTxt
  url: llms/delphi-llms.txt
- type: DataModel
  url: data-model/delphi-data-model.yml
- type: Components
  url: components/delphi-components.yml
- type: Overlay
  url: overlays/delphi-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: Support
  url: https://docs.delphi.ai
- type: Blog
  url: https://delphi.ai/blog
- type: GitHubOrganization
  url: https://github.com/delphi-ai
- type: Pricing
  url: https://delphi.ai/pricing
- type: Login
  url: https://delphi.ai/login
- type: TermsOfService
  url: https://delphi.ai/terms
- type: PrivacyPolicy
  url: https://delphi.ai/privacy
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence