Prelude

Prelude Security is now Origin, an endpoint AI observability platform that inventories, observes, and measures the use of AI agents and Model Context Protocol (MCP) servers across an enterprise fleet. Deployed as a lightweight endpoint agent, Origin gives security and IT teams discovery of sanctioned and unsanctioned agents and MCP servers, security visibility into agent prompts, tool calls, file access and network activity, and spend tracking across models and teams. Origin also publishes a hosted, OAuth 2.1-secured MCP server that lets agents query endpoint and agent observability data in natural language. Backed by Insight Partners.

Prelude is listed with 1 API on the APIs.io network. Tagged areas include Company, Cybersecurity, AI Security, AI Observability, and Endpoint Security.

Prelude’s developer surface includes documentation, getting-started guide, support, engineering blog, changelog, pricing, authentication, and 15 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.1/100 thin ▬ flat Agent 23/100 agent aware Front door AI 6/6 dominant Heartbeat 86/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessSelf serve

1 API 1 MCP Servers

Company Cybersecurity AI Security AI Observability Endpoint Security AI Agents MCP Insight Partners Artificial Intelligence Observability Monitoring Platform

Kin Score

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

Composite quality — 30.1/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 8.5 / 17

Access Clarity 6.0 / 17

Operational Transparency 1.7 / 11

Contract Governance 1.9 / 10

Discoverability 6.4 / 9

Regulatory Posture 3.5 / 15

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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 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 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
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)

9 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 35.5 — up to +12.9 composite points
Operational Transparency scores 15.8 — up to +10.9 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/prelude/apis.yml: open an issue on github.com/api-evangelist/prelude 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 2

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

APIs 1

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

Origin Analytics MCP Server

Hosted, OAuth 2.1-secured Model Context Protocol server that lets agents run read-only structured queries against a tenant's endpoint and agent observability data (schema discov...

MCP Servers 1

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

Prelude MCP Server

Remote MCP server at mcp.prod.originhq.com over HTTP; 2 tools listed.

MCP SERVER

Security Posture 2

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

Prelude Authentication

oauth2 · 1 scheme

SECURITY

Prelude Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

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

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Conformance

Conformance

Access & Security 3

Authentication, authorization, and security posture

Compliance

Compliance

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

Company 4

The organization behind the API

Website

Blog

Blog

Website

Source (apis.yml)

x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-04
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 10
  pass: local-v1
aid: prelude
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Self-serve signup
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/prelude.png
name: Prelude
description: Prelude Security is now Origin, an endpoint AI observability platform that inventories, observes, and measures
  the use of AI agents and Model Context Protocol (MCP) servers across an enterprise fleet. Deployed as a lightweight endpoint
  agent, Origin gives security and IT teams discovery of sanctioned and unsanctioned agents and MCP servers, security visibility
  into agent prompts, tool calls, file access and network activity, and spend tracking across models and teams. Origin also
  publishes a hosted, OAuth 2.1-secured MCP server that lets agents query endpoint and agent observability data in natural
  language. Backed by Insight Partners.
url: https://raw.githubusercontent.com/api-evangelist/prelude/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: stub
x-tier-reason: portfolio-lead
x-rebrand:
  former_name: Prelude Security
  current_name: Origin
  current_domain: originhq.com
  note: preludesecurity.com 301-redirects to originhq.com/preludesecurity
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Cybersecurity
- AI Security
- AI Observability
- Endpoint Security
- AI Agents
- MCP
- Insight Partners
- Artificial Intelligence
- Observability
- Monitoring
- Platform
tags_raw:
- Company
- Cybersecurity
- AI Security
- AI Observability
- Endpoint Security
- AI Agents
- Model Context Protocol
- MCP
- Insight Partners
- AI
- Observability
- Monitoring
- Platform
apis:
- name: Origin Analytics MCP Server
  description: Hosted, OAuth 2.1-secured Model Context Protocol server that lets agents run read-only structured queries against
    a tenant's endpoint and agent observability data (schema discovery + analytics query), constrained by the caller's Origin
    dashboard role.
  humanURL: https://support.originhq.com/docs/origin-mcp-server
  baseURL: https://mcp.prod.originhq.com/mcp
  properties:
  - type: MCPServer
    url: mcp/prelude-mcp.yml
  - type: Documentation
    url: https://support.originhq.com/docs/origin-mcp-server
  - type: Authentication
    url: authentication/prelude-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.originhq.com/
- type: DeveloperPortal
  url: https://support.originhq.com
- type: Documentation
  url: https://support.originhq.com
- type: GettingStarted
  url: https://support.originhq.com/docs/welcome-to-origin
- type: Support
  url: https://support.originhq.com
- type: Blog
  url: https://www.originhq.com/blog
- type: ChangeLog
  url: https://www.originhq.com/changelog
- type: Pricing
  url: https://www.originhq.com/pricing
- type: Login
  url: https://dashboard.originhq.com
- type: TermsOfService
  url: https://www.originhq.com/legal/service-terms
- type: Compliance
  url: https://www.originhq.com/legal/service-terms
- type: MCPServer
  url: mcp/prelude-mcp.yml
- type: LLMsTxt
  url: llms/prelude-llms.txt
- type: WellKnown
  url: well-known/prelude-well-known.yml
- type: Authentication
  url: authentication/prelude-authentication.yml
- type: Lifecycle
  url: lifecycle/prelude-lifecycle.yml
- type: ChangeLog
  url: changelog/prelude-changelog.yml
- type: Conformance
  url: conformance/prelude-conformance.yml
- type: DomainSecurity
  url: security/prelude-domain-security.yml
- type: Blog
  url: https://www.originhq.com:443/blog
- type: Documentation
  url: https://docs.preludesecurity.com/
- type: Website
  url: https://www.originhq.com/preludesecurity

Prelude API — frequently asked questions

Does Prelude have an API?

Yes. APIs.io lists 1 API from Prelude, including Origin Analytics MCP Server.

How do I authenticate with the Prelude API?

Prelude documents its authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as Prelude Authentication.

Does Prelude have an MCP server?

Yes. APIs.io lists 1 MCP server for Prelude: Remote MCP server at mcp.prod.originhq.com over HTTP; 2 tools listed.

Is the Prelude API ready for AI agents?

Prelude has a Kin Score of 30.1 out of 100 (thin) and an Agent Readiness score of 23.0 (agent-aware), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

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