Adapter

Adapter is a cognition API — a persistent memory and knowledge-graph layer that sits alongside AI models so understanding is already available when agents need answers. Founded by Adam Ghetti and David Bader, Adapter continuously reads and connects a user's data (calendar, contacts, messages, email, conversations) into a living knowledge graph, grounding every response in cited sources and surfacing hidden connections across sources rather than starting each query from scratch. The Adapter API exposes multi-model conversation/completion endpoints, knowledge-graph and memory queries, life-radar events, reminders, multi-channel messaging, reranking, and an OAuth 2.0 + hosted MCP surface (mcp:read) for agent access. Tagline: "Give your model a mind."

Adapter publishes 26 APIs on the APIs.io network, including Adapter API API, assets API, auth API, and 23 more. Tagged areas include Company, Artificial Intelligence, Cognition, Knowledge Graph, and Memory.

Adapter’s developer surface includes authentication, engineering blog, signup flow, support, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.0/100 thin ▬ flat Agent 32/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Company Artificial IntelligenceCognitionKnowledge Graph Memory Agents MCP LLM

Kin Score

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

Composite quality — 33.0/100 · thin

Contract Quality 11.6 / 23

Developer Ergonomics 3.7 / 18

Access Clarity 6.2 / 18

Operational Transparency 0.0 / 12

Contract Governance 2.0 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

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 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

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 github.com/api-evangelist/adapter: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 26

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

Adapter Adapter API API

The Adapter API API from Adapter — 1 operation(s) for adapter api.

Adapter assets API

The assets API from Adapter — 8 operation(s) for assets.

Adapter auth API

The auth API from Adapter — 23 operation(s) for auth.

Adapter conversations API

The conversations API from Adapter — 11 operation(s) for conversations.

Adapter Docs API

The Docs API from Adapter — 1 operation(s) for docs.

Adapter Imessage API

The Imessage API from Adapter — 1 operation(s) for imessage.

Adapter knowledge API

The knowledge API from Adapter — 11 operation(s) for knowledge.

Adapter life API

The life API from Adapter — 1 operation(s) for life.

Adapter Line API

The Line API from Adapter — 1 operation(s) for line.

Adapter location API

The location API from Adapter — 1 operation(s) for location.

Adapter management API

The management API from Adapter — 1 operation(s) for management.

Adapter Oauth API

The Oauth API from Adapter — 1 operation(s) for oauth.

Adapter oauth-connect API

The oauth-connect API from Adapter — 3 operation(s) for oauth-connect.

Adapter oauth2 API

The oauth2 API from Adapter — 2 operation(s) for oauth2.

Adapter Openapi.json API

The Openapi.json API from Adapter — 1 operation(s) for openapi.json.

Adapter proxy API

The proxy API from Adapter — 13 operation(s) for proxy.

Adapter radar API

The radar API from Adapter — 2 operation(s) for radar.

Adapter Redoc API

The Redoc API from Adapter — 1 operation(s) for redoc.

Adapter reminders API

The reminders API from Adapter — 3 operation(s) for reminders.

Adapter reranking API

The reranking API from Adapter — 1 operation(s) for reranking.

Adapter Sendblue API

The Sendblue API from Adapter — 1 operation(s) for sendblue.

Adapter Sms API

The Sms API from Adapter — 1 operation(s) for sms.

Adapter support API

The support API from Adapter — 1 operation(s) for support.

Adapter Users API

The Users API from Adapter — 1 operation(s) for users.

Adapter Webhook API

The Webhook API from Adapter — 3 operation(s) for webhook.

Adapter Whatsapp API

The Whatsapp API from Adapter — 2 operation(s) for whatsapp.

Scroll for all 26

Open Collections 27

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

API Collection

OPEN COLLECTION

Adapter Adapter API API

OPEN COLLECTION

Adapter Adapter API assets API

OPEN COLLECTION

Adapter Adapter API auth API

OPEN COLLECTION

Adapter Adapter API conversations API

OPEN COLLECTION

Adapter Adapter API Docs API

OPEN COLLECTION

Adapter Adapter API Imessage API

OPEN COLLECTION

Adapter Adapter API knowledge API

OPEN COLLECTION

Adapter Adapter API life API

OPEN COLLECTION

Adapter Adapter API Line API

OPEN COLLECTION

Adapter Adapter API location API

OPEN COLLECTION

Adapter Adapter API management API

OPEN COLLECTION

Adapter Adapter API Oauth API

OPEN COLLECTION

Adapter Adapter API oauth-connect API

OPEN COLLECTION

Adapter Adapter API oauth2 API

OPEN COLLECTION

Adapter Adapter API Openapi.json API

OPEN COLLECTION

Adapter Adapter API proxy API

OPEN COLLECTION

Adapter Adapter API radar API

OPEN COLLECTION

Adapter Adapter API Redoc API

OPEN COLLECTION

Adapter Adapter API reminders API

OPEN COLLECTION

Adapter Adapter API reranking API

OPEN COLLECTION

Adapter Adapter API Sendblue API

OPEN COLLECTION

Adapter Adapter API Sms API

OPEN COLLECTION

Adapter Adapter API support API

OPEN COLLECTION

Adapter Adapter API Users API

OPEN COLLECTION

Adapter Adapter API Webhook API

OPEN COLLECTION

Adapter Adapter API Whatsapp API

OPEN COLLECTION

Scroll for all 27

Security Posture 2

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

Adapter Authentication

http/oauth2 · 3 schemes

SECURITY

Adapter Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Adapter Scopes

2 scopes · authorizationCode

2 scopes

SCOPES

Agentic Access 1

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

Adapter Agentic Access

110 operations · 61 acting · 3 human-in-the-loop

110 operations · 61 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

OpenAPI

OpenAPI

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

WellKnown

AgenticAccess

AgentSkill

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

DataModel

Conformance

Lifecycle

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 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: adapter
name: Adapter
description: 'Adapter is a cognition API — a persistent memory and knowledge-graph layer that sits alongside AI models so
  understanding is already available when agents need answers. Founded by Adam Ghetti and David Bader, Adapter continuously
  reads and connects a user''s data (calendar, contacts, messages, email, conversations) into a living knowledge graph, grounding
  every response in cited sources and surfacing hidden connections across sources rather than starting each query from scratch.
  The Adapter API exposes multi-model conversation/completion endpoints, knowledge-graph and memory queries, life-radar events,
  reminders, multi-channel messaging, reranking, and an OAuth 2.0 + hosted MCP surface (mcp:read) for agent access. Tagline:
  "Give your model a mind."'
url: https://raw.githubusercontent.com/api-evangelist/adapter/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- gv
x-tier: stub
x-tier-reason: portfolio-lead
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: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-17'
tags:
- Company
- Artificial Intelligence
- Cognition
- Knowledge Graph
- Memory
- Agents
- MCP
- LLM
tags_raw:
- Company
- Ai
- Cognition
- Knowledge Graph
- Memory
- Agents
- MCP
- LLM
image: https://framerusercontent.com/images/jeqjDUjgYoFJr6KfWmg7Kvi2Rs.png
apis:
- aid: adapter:adapter-adapter-api-api
  name: Adapter Adapter API API
  description: The Adapter API API from Adapter — 1 operation(s) for adapter api.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Adapter API
  properties:
  - type: OpenAPI
    url: openapi/adapter-adapter-api-api-openapi.yml
- aid: adapter:adapter-assets-api
  name: Adapter assets API
  description: The assets API from Adapter — 8 operation(s) for assets.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Assets
  tags_raw:
  - assets
  properties:
  - type: OpenAPI
    url: openapi/adapter-assets-api-openapi.yml
- aid: adapter:adapter-auth-api
  name: Adapter auth API
  description: The auth API from Adapter — 23 operation(s) for auth.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Authentication
  tags_raw:
  - auth
  properties:
  - type: OpenAPI
    url: openapi/adapter-auth-api-openapi.yml
- aid: adapter:adapter-conversations-api
  name: Adapter conversations API
  description: The conversations API from Adapter — 11 operation(s) for conversations.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Conversations
  tags_raw:
  - conversations
  properties:
  - type: OpenAPI
    url: openapi/adapter-conversations-api-openapi.yml
- aid: adapter:adapter-docs-api
  name: Adapter Docs API
  description: The Docs API from Adapter — 1 operation(s) for docs.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Docs
  properties:
  - type: OpenAPI
    url: openapi/adapter-docs-api-openapi.yml
- aid: adapter:adapter-imessage-api
  name: Adapter Imessage API
  description: The Imessage API from Adapter — 1 operation(s) for imessage.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - iMessage
  tags_raw:
  - Imessage
  properties:
  - type: OpenAPI
    url: openapi/adapter-imessage-api-openapi.yml
- aid: adapter:adapter-knowledge-api
  name: Adapter knowledge API
  description: The knowledge API from Adapter — 11 operation(s) for knowledge.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Knowledge
  tags_raw:
  - knowledge
  properties:
  - type: OpenAPI
    url: openapi/adapter-knowledge-api-openapi.yml
- aid: adapter:adapter-life-api
  name: Adapter life API
  description: The life API from Adapter — 1 operation(s) for life.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - life
  properties:
  - type: OpenAPI
    url: openapi/adapter-life-api-openapi.yml
- aid: adapter:adapter-line-api
  name: Adapter Line API
  description: The Line API from Adapter — 1 operation(s) for line.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Line
  properties:
  - type: OpenAPI
    url: openapi/adapter-line-api-openapi.yml
- aid: adapter:adapter-location-api
  name: Adapter location API
  description: The location API from Adapter — 1 operation(s) for location.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Location
  tags_raw:
  - location
  properties:
  - type: OpenAPI
    url: openapi/adapter-location-api-openapi.yml
- aid: adapter:adapter-management-api
  name: Adapter management API
  description: The management API from Adapter — 1 operation(s) for management.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Management
  tags_raw:
  - management
  properties:
  - type: OpenAPI
    url: openapi/adapter-management-api-openapi.yml
- aid: adapter:adapter-oauth-api
  name: Adapter Oauth API
  description: The Oauth API from Adapter — 1 operation(s) for oauth.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Authentication
  tags_raw:
  - Oauth
  properties:
  - type: OpenAPI
    url: openapi/adapter-oauth-api-openapi.yml
- aid: adapter:adapter-oauth-connect-api
  name: Adapter oauth-connect API
  description: The oauth-connect API from Adapter — 3 operation(s) for oauth-connect.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - oauth-connect
  properties:
  - type: OpenAPI
    url: openapi/adapter-oauth-connect-api-openapi.yml
- aid: adapter:adapter-oauth2-api
  name: Adapter oauth2 API
  description: The oauth2 API from Adapter — 2 operation(s) for oauth2.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Authentication
  tags_raw:
  - oauth2
  properties:
  - type: OpenAPI
    url: openapi/adapter-oauth2-api-openapi.yml
- aid: adapter:adapter-openapi-json-api
  name: Adapter Openapi.json API
  description: The Openapi.json API from Adapter — 1 operation(s) for openapi.json.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Openapi.json
  properties:
  - type: OpenAPI
    url: openapi/adapter-openapi-json-api-openapi.yml
- aid: adapter:adapter-proxy-api
  name: Adapter proxy API
  description: The proxy API from Adapter — 13 operation(s) for proxy.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Proxy
  tags_raw:
  - proxy
  properties:
  - type: OpenAPI
    url: openapi/adapter-proxy-api-openapi.yml
- aid: adapter:adapter-radar-api
  name: Adapter radar API
  description: The radar API from Adapter — 2 operation(s) for radar.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Radar
  tags_raw:
  - radar
  properties:
  - type: OpenAPI
    url: openapi/adapter-radar-api-openapi.yml
- aid: adapter:adapter-redoc-api
  name: Adapter Redoc API
  description: The Redoc API from Adapter — 1 operation(s) for redoc.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Redoc
  properties:
  - type: OpenAPI
    url: openapi/adapter-redoc-api-openapi.yml
- aid: adapter:adapter-reminders-api
  name: Adapter reminders API
  description: The reminders API from Adapter — 3 operation(s) for reminders.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Reminders
  tags_raw:
  - reminders
  properties:
  - type: OpenAPI
    url: openapi/adapter-reminders-api-openapi.yml
- aid: adapter:adapter-reranking-api
  name: Adapter reranking API
  description: The reranking API from Adapter — 1 operation(s) for reranking.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Reranking
  tags_raw:
  - reranking
  properties:
  - type: OpenAPI
    url: openapi/adapter-reranking-api-openapi.yml
- aid: adapter:adapter-sendblue-api
  name: Adapter Sendblue API
  description: The Sendblue API from Adapter — 1 operation(s) for sendblue.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Sendblue
  properties:
  - type: OpenAPI
    url: openapi/adapter-sendblue-api-openapi.yml
- aid: adapter:adapter-sms-api
  name: Adapter Sms API
  description: The Sms API from Adapter — 1 operation(s) for sms.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - SMS
  tags_raw:
  - Sms
  properties:
  - type: OpenAPI
    url: openapi/adapter-sms-api-openapi.yml
- aid: adapter:adapter-support-api
  name: Adapter support API
  description: The support API from Adapter — 1 operation(s) for support.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Support
  tags_raw:
  - support
  properties:
  - type: OpenAPI
    url: openapi/adapter-support-api-openapi.yml
- aid: adapter:adapter-users-api
  name: Adapter Users API
  description: The Users API from Adapter — 1 operation(s) for users.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/adapter-users-api-openapi.yml
- aid: adapter:adapter-webhook-api
  name: Adapter Webhook API
  description: The Webhook API from Adapter — 3 operation(s) for webhook.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - Webhook
  properties:
  - type: OpenAPI
    url: openapi/adapter-webhook-api-openapi.yml
- aid: adapter:adapter-whatsapp-api
  name: Adapter Whatsapp API
  description: The Whatsapp API from Adapter — 2 operation(s) for whatsapp.
  humanURL: https://www.adapter.com
  baseURL: https://api.adapter.com
  tags:
  - WhatsApp
  tags_raw:
  - Whatsapp
  properties:
  - type: OpenAPI
    url: openapi/adapter-whatsapp-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/adapter-capability-edges.yml
  name: Adapter Business Capability Map
- type: OpenAPI
  url: openapi/_original/adapter-openapi.json
- type: X-MCPServerCandidate
  url: mcp/adapter-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: WellKnown
  url: well-known/adapter-well-known.yml
- type: Authentication
  url: authentication/adapter-authentication.yml
- type: OAuthScopes
  url: scopes/adapter-scopes.yml
- type: AgenticAccess
  url: agentic-access/adapter-agentic-access.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ErrorCatalog
  url: errors/adapter-problem-types.yml
- type: Conventions
  url: conventions/adapter-conventions.yml
- type: DataModel
  url: data-model/adapter-data-model.yml
- type: Conformance
  url: conformance/adapter-conformance.yml
- type: Lifecycle
  url: lifecycle/adapter-lifecycle.yml
- type: Overlay
  url: overlays/adapter-openapi-overlay.yaml
- type: LLMsTxt
  url: llms/adapter-llms.txt
- type: DomainSecurity
  url: security/adapter-domain-security.yml
- type: Blog
  url: https://www.adapter.com/blog
- type: SignUp
  url: https://www.adapter.com/get-access
- type: TermsOfService
  url: https://www.adapter.com/terms-of-service
- type: PrivacyPolicy
  url: https://www.adapter.com/privacy-policy
- type: Website
  url: https://www.adapter.com
- type: Support
  url: mailto:hello@adapter.com
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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