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 API contracts indexed 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 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

47.9/100 developing ▬ flat Agent 27/100 agent aware saas Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 3 Agent Skills

Company Artificial IntelligenceAI ClonesDigital MindsConversational AI Voice Search RAG Knowledge Base Creator Economy Webhook

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 47.9/100 · developing

Contract Quality 4.8 / 21

Developer Ergonomics 10.0 / 17

Access Clarity 14.3 / 17

Operational Transparency 4.9 / 11

Contract Governance 0.5 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 22.5 — up to +19.4 composite points
Contract Governance scores 4.5 — up to +11.5 composite points
Developer Ergonomics scores 58.9 — up to +8.2 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/delphi/apis.yml: open an issue on github.com/api-evangelist/delphi to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Agent Skills (SKILL.md packages)	standard	17.2 (thin)	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Delphi Audience API

OPEN COLLECTION

Delphi Audience Clone API

OPEN COLLECTION

Delphi Audience Conversations API

OPEN COLLECTION

Delphi Audience Questions API

OPEN COLLECTION

Delphi Audience Search API

OPEN COLLECTION

Delphi Audience Tags API

OPEN COLLECTION

Delphi Audience Usage API

OPEN COLLECTION

Delphi Audience Voice API

OPEN COLLECTION

Scroll for all 8

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Converse with a Delphi Digital Mind

AGENT SKILL

Manage a Delphi audience and its memory

AGENT SKILL

Search a Delphi digital mind for RAG

AGENT SKILL

Pricing Plans 2

Published pricing tiers and plan structures.

Delphi Plans Pricing

4 plans

PLANS

Delphi Price Estimates

0 plans

PLANS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Delphi Finops

FINOPS

Event Specifications 1

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

Delphi Webhooks

ASYNCAPI

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Delphi Overlay

5 actions · update · delphi-openapi.yml

DERIVED

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 · 13 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

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

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

Webhooks

DataModel

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 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

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)

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
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://avatars.githubusercontent.com/u/120126721?v=4
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
x-docs-platform: gitbook
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-09-25
tags:
- Company
- Artificial Intelligence
- AI Clones
- Digital Minds
- Conversational AI
- Voice
- Search
- RAG
- Knowledge Base
- Creator Economy
- Webhook
tags_raw:
- 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:
  - Audiences
  tags_raw:
  - 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: Plans
  url: plans/delphi-plans-pricing.yml
- 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: X-MCPServerCandidate
  url: mcp/delphi-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- 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

Delphi API — frequently asked questions

Does Delphi have an API?

Yes. APIs.io lists 8 APIs from Delphi, including Delphi Audience API, Delphi Clone API and Delphi Conversations API, and 5 more.

Is there an OpenAPI specification for the Delphi API?

Yes. APIs.io indexes 8 OpenAPI specifications for Delphi, each linked for download from this page.

How do I authenticate with the Delphi API?

Delphi uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Delphi Authentication.

How much does the Delphi API cost?

APIs.io lists 4 pricing plans for Delphi, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Delphi API ready for AI agents?

Delphi has a Kin Score of 47.9 out of 100 (developing) and an Agent Readiness score of 27.3 (agent-aware), scored by API Evangelist on 2026-10-31.

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