Darwin Technologies, Inc.

Darwin Technologies, Inc. builds the agentic web, enabling people and AI to discover, use, and create agents. Their mission is to advance how the world interacts with agents, offering a platform for AI assistants, marketplaces, and productivity apps. The company provides developer tools, documentation, and a network connecting businesses and users to get work done efficiently.

Darwin Technologies, Inc. publishes 4 API contracts indexed on the APIs.io network, including Account API, Accounts API, Act API, and 1 more. Tagged areas include Company, Artificial Intelligence, Platform, Developer Tools, and Marketplace.

The Darwin Technologies, Inc. catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Darwin Technologies, Inc.’s developer surface includes changelog, pricing, getting-started guide, API reference, authentication, and 27 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

50.0/100 developing Agent 65/100 agent native Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers 1 Agent Skills

Company Artificial Intelligence Platform Developer Tools Marketplace Productivity

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 50.0/100 · developing

Contract Quality 13.8 / 21

Developer Ergonomics 6.8 / 17

Access Clarity 10.7 / 17

Operational Transparency 2.3 / 11

Contract Governance 2.2 / 10

Discoverability 5.7 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 65/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 0 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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):

Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter
Distinct Operations +3 pts — share of operations whose summary is unique within its document after light normalisation; na without two summarised operations
Consent & Bot Identity +3 pts — common[].type includes AIPREF, ContentSignal, WebBotAuth, or HTTPMessageSignatures

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

Developer Ergonomics scores 39.9 — up to +12.0 composite points
Operational Transparency scores 21.1 — up to +10.3 composite points
Contract Governance scores 22.0 — up to +9.4 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/darwin-so/apis.yml: open an issue on github.com/api-evangelist/darwin-so 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 →

Standards implemented 5

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 4

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

Darwin Technologies, Inc. Account API

The Account API from Darwin Technologies, Inc. — 26 operation(s) for account.

Darwin Technologies, Inc. Accounts API

The Accounts API from Darwin Technologies, Inc. — 1 operation(s) for accounts.

Darwin Technologies, Inc. Act API

The Act API from Darwin Technologies, Inc. — 9 operation(s) for act.

Darwin Technologies, Inc. Search API

The Search API from Darwin Technologies, Inc. — 1 operation(s) for search.

MCP Servers 1

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

Darwin Technologies, Inc. MCP Server

Remote MCP server at mcp.darwin.so.

MCP SERVER

Agent Skills 1

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

darwin-so-start-thread-and-send-message

AGENT SKILL

Darwin Technologies, Inc. API pricing

Prices published by Darwin Technologies, Inc., read 2026-11-04 from darwin.so/pricing. A free plan or tier is listed.

Plan	Price
Personal	Free · Pay as you go
Developer	Pay as you go
Business	$50/mo · Pay as you go
Enterprise	Custom pricing

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Darwin So Plans Pricing

4 plans

PLANS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Darwin So Context

56 classes · 155 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Darwin Technologies, Inc. API Rules

56 rules · 41 errors 11 warnings 4 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

GetPaymentOptionsResponse

14 properties

JSON SCHEMA

GetThreadResponse

9 properties

JSON SCHEMA

ListTargetAccountsResponse

2 properties

JSON SCHEMA

PayResponse

0 properties

JSON SCHEMA

SendMessageBody

0 properties

JSON SCHEMA

StartThreadBody

0 properties

JSON SCHEMA

Security Posture 2

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

Darwin So Authentication

apiKey/http · 3 schemes

SECURITY

Darwin So Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Darwin So Agentic Access

40 operations · 19 acting · 5 human-in-the-loop

40 operations · 19 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

ErrorCatalog

Conformance

Scroll for all 8

Build 4

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Newsroom

Newsroom

Website

Website

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: darwin-so
name: Darwin Technologies, Inc.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://darwin.so/assets/marketing/darwin/editorial/social/darwin-social-gradient.png
description: Darwin Technologies, Inc. builds the agentic web, enabling people and AI to discover, use, and create agents.
  Their mission is to advance how the world interacts with agents, offering a platform for AI assistants, marketplaces, and
  productivity apps. The company provides developer tools, documentation, and a network connecting businesses and users to
  get work done efficiently.
url: https://artifacts.apis.io/darwin-so/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-04'
modified: '2026-11-04'
tags:
- Company
- Artificial Intelligence
- Platform
- Developer Tools
- Marketplace
- Productivity
tags_raw:
- Company
- AI
- Platform
- DeveloperTools
- Marketplace
- Productivity
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/darwin-so-agentic-access.yml
- type: Plans
  url: plans/darwin-so-plans-pricing.yml
- type: Spectral
  url: rules/darwin-so-rules.yml
- type: JSONLD
  url: json-ld/darwin-so-context.jsonld
- type: Vocabulary
  url: vocabulary/darwin-so-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/darwin-so-data-model.yml
- type: ChangeLog
  url: changelog/darwin-so-changelog.yml
- type: Idempotency
  url: conventions/darwin-so-conventions.yml
- type: Conventions
  url: conventions/darwin-so-conventions.yml
- type: ErrorCatalog
  url: errors/darwin-so-problem-types.yml
- type: Conformance
  url: conformance/darwin-so-conformance.yml
- type: LLMsTxt
  url: llms/darwin-so-llms.txt
- type: AgentCard
  url: a2a/darwin-so-a2a.yml
- type: ToolCrosswalk
  url: mcp/darwin-so-tool-crosswalk.yml
- type: MCPServer
  url: mcp/darwin-so-mcp.yml
- type: WellKnown
  url: well-known/darwin-so-well-known.yml
- type: Hosts
  url: hosts/darwin-so-hosts.yml
- type: Vendors
  url: vendors/darwin-so-vendors.yml
- type: SDKs
  url: packages/darwin-so-packages.yml
- type: Packages
  url: packages/darwin-so-packages.yml
- type: TermsOfService
  url: https://darwin.so/terms
- type: PrivacyPolicy
  url: https://darwin.so/privacy
- type: Pricing
  url: https://darwin.so/pricing
- type: Newsroom
  url: https://darwin.so/news
- type: GitHubOrganization
  url: https://github.com/darwin-studios
- type: ChangeLog
  url: https://darwin.so/docs/changelog
- type: GettingStarted
  url: https://darwin.so/docs/interfaces/darwin/mcp
- type: APIReference
  url: https://dev.darwin.so/
- type: Authentication
  url: authentication/darwin-so-authentication.yml
- type: DomainSecurity
  url: security/darwin-so-domain-security.yml
- type: Website
  url: https://darwin.so/
apis:
- aid: darwin-so:darwin-so-account-api
  name: Darwin Technologies, Inc. Account API
  description: The Account API from Darwin Technologies, Inc. — 26 operation(s) for account.
  humanURL: https://darwin.so
  baseURL: https://api.darwin.so/api/v2
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/darwin-so-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/darwin-so-get-thread-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-send-message-body-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-start-thread-body-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-get-payment-options-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-pay-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-list-target-accounts-response-schema.json
- aid: darwin-so:darwin-so-accounts-api
  name: Darwin Technologies, Inc. Accounts API
  description: The Accounts API from Darwin Technologies, Inc. — 1 operation(s) for accounts.
  humanURL: https://darwin.so
  baseURL: https://api.darwin.so/api/v2
  tags:
  - Account
  tags_raw:
  - Accounts
  properties:
  - type: OpenAPI
    url: openapi/darwin-so-accounts-api-openapi.yml
  - type: JSONSchema
    url: json-schema/darwin-so-get-thread-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-send-message-body-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-start-thread-body-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-get-payment-options-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-pay-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-list-target-accounts-response-schema.json
- aid: darwin-so:darwin-so-act-api
  name: Darwin Technologies, Inc. Act API
  description: The Act API from Darwin Technologies, Inc. — 9 operation(s) for act.
  humanURL: https://darwin.so
  baseURL: https://api.darwin.so/api/v2
  tags:
  - ACT
  tags_raw:
  - Act
  properties:
  - type: OpenAPI
    url: openapi/darwin-so-act-api-openapi.yml
  - type: JSONSchema
    url: json-schema/darwin-so-get-thread-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-send-message-body-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-start-thread-body-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-get-payment-options-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-pay-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-list-target-accounts-response-schema.json
- aid: darwin-so:darwin-so-search-api
  name: Darwin Technologies, Inc. Search API
  description: The Search API from Darwin Technologies, Inc. — 1 operation(s) for search.
  humanURL: https://darwin.so
  baseURL: https://api.darwin.so/api/v2
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/darwin-so-search-api-openapi.yml
  - type: JSONSchema
    url: json-schema/darwin-so-get-thread-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-send-message-body-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-start-thread-body-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-get-payment-options-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-pay-response-schema.json
  - type: JSONSchema
    url: json-schema/darwin-so-list-target-accounts-response-schema.json
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 47
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Darwin Technologies, Inc. API — frequently asked questions

Does Darwin Technologies, Inc. have an API?

Yes. APIs.io lists 4 APIs from Darwin Technologies, Inc., including Darwin Technologies, Inc. Account API, Darwin Technologies, Inc. Accounts API and Darwin Technologies, Inc. Act API, and 1 more.

Is there an OpenAPI specification for the Darwin Technologies, Inc. API?

Yes. APIs.io indexes 4 OpenAPI specifications for Darwin Technologies, Inc., each linked for download from this page.

How do I authenticate with the Darwin Technologies, Inc. API?

Darwin Technologies, Inc. documents its authentication (apiKey/http · 3 schemes). The details are profiled on APIs.io as Darwin So Authentication.

How much does the Darwin Technologies, Inc. API cost?

Darwin Technologies, Inc. publishes its prices; its Personal plan is Free · Pay as you go as of 2026-11-04. APIs.io lists 4 pricing plans for Darwin Technologies, Inc., with each plan's price, limits and inclusions under Pricing on this page.

Does Darwin Technologies, Inc. have an MCP server?

Yes. APIs.io lists 1 MCP server for Darwin Technologies, Inc.: Remote MCP server at mcp.darwin.so.

Is the Darwin Technologies, Inc. API ready for AI agents?

Darwin Technologies, Inc. has a Kin Score of 50.0 out of 100 (developing) and an Agent Readiness score of 64.8 (agent-native), scored by API Evangelist on 2026-11-06.

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