Notyfi website screenshot

Notyfi

Notyfi is a natural-language monitoring and notification service built by Perceptron ML (Y Combinator). Describe what to watch in one sentence -- new lawsuits, layoffs, price drops, listings, RFPs, breaking news -- and Notyfi watches the news, filings, databases, and the open web for it, delivering deduplicated canonical events instantly, hourly, daily, or weekly by email, on a live dashboard, or into agents and workflows via a REST API and a hosted MCP server. The API exposes persistent trackers, their event feeds, HMAC-signed outgoing webhooks, API-key management, account, and Stripe-backed billing. Authenticate with a Notyfi API key (Authorization: Bearer notyfi_mk_... or X-Api-Key).

Notyfi publishes 5 APIs on the APIs.io network, including account API, billing API, keys API, and 2 more. Tagged areas include Company, Notification, Monitoring, Webhook, and Real-Time.

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

Notyfi’s developer surface includes documentation, API reference, pricing, signup flow, authentication, and 16 more developer resources.

🌐 Visit website 📡 Source on GitHub
30.1/100 thin ▬ flat Agent 47/100 agent native Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
AccessSelf serve
5 APIs 1 MCP Servers
CompanyNotificationMonitoringWebhookReal-TimeAgentsMCPAlerts

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 30.1/100 · thin
Contract Quality 16.2 / 25
Developer Ergonomics 2.7 / 20
Access Clarity 0.0 / 20
Operational Transparency 1.0 / 13
Contract Governance 2.0 / 12
Discoverability 8.2 / 10
Agent readiness — 47/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 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/notyfi: 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 5

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

Notyfi account API

The account API from Notyfi — 3 operation(s) for account.

Notyfi billing API

The billing API from Notyfi — 3 operation(s) for billing.

Notyfi keys API

The keys API from Notyfi — 2 operation(s) for keys.

Notyfi trackers API

The trackers API from Notyfi — 6 operation(s) for trackers.

Notyfi webhooks API

The webhooks API from Notyfi — 4 operation(s) for webhooks.

Open Collections 6

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

API Collection

OPEN COLLECTION

Notyfi account API

OPEN COLLECTION

Notyfi account billing API

OPEN COLLECTION

Notyfi account keys API

OPEN COLLECTION

Notyfi account trackers API

OPEN COLLECTION

Notyfi account webhooks API

OPEN COLLECTION

MCP Servers 1

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

Notyfi

MCP SERVER

Event Specifications 1

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

Notyfi Webhooks

ASYNCAPI

Security Posture 2

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

Notyfi Authentication

apiKey/http · 2 schemes

SECURITY

Notyfi Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Notyfi Agentic Access

26 operations · 18 acting · 3 human-in-the-loop

26 operations · 18 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 SignUp
SignUp

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill
 AgenticAccess
AgenticAccess

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Webhooks
Webhooks
 Conformance
Conformance
 DataModel
DataModel

Scroll for all 7

Access & Security 2

Authentication, authorization, and security posture

Authentication
Authentication
 DomainSecurity
DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: notyfi
name: Notyfi
description: 'Notyfi is a natural-language monitoring and notification service built by Perceptron ML (Y Combinator). Describe
  what to watch in one sentence -- new lawsuits, layoffs, price drops, listings, RFPs, breaking news -- and Notyfi watches
  the news, filings, databases, and the open web for it, delivering deduplicated canonical events instantly, hourly, daily,
  or weekly by email, on a live dashboard, or into agents and workflows via a REST API and a hosted MCP server. The API exposes
  persistent trackers, their event feeds, HMAC-signed outgoing webhooks, API-key management, account, and Stripe-backed billing.
  Authenticate with a Notyfi API key (Authorization: Bearer notyfi_mk_... or X-Api-Key).'
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://notyfi.com/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/notyfi/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Notification
- Monitoring
- Webhook
- Real-Time
- Agents
- MCP
- Alerts
tags_raw:
- Company
- Notifications
- Monitoring
- Webhooks
- Real Time
- Agents
- MCP
- Alerts
apis:
- aid: notyfi:notyfi-account-api
  name: Notyfi account API
  description: The account API from Notyfi — 3 operation(s) for account.
  humanURL: https://notyfi.com/docs
  baseURL: https://api.notyfi.com/api/v1
  tags:
  - Account
  tags_raw:
  - account
  properties:
  - type: OpenAPI
    url: openapi/notyfi-account-api-openapi.yml
  - type: Documentation
    url: https://notyfi.com/docs
  - type: APIReference
    url: https://notyfi.com/docs
- aid: notyfi:notyfi-billing-api
  name: Notyfi billing API
  description: The billing API from Notyfi — 3 operation(s) for billing.
  humanURL: https://notyfi.com/docs
  baseURL: https://api.notyfi.com/api/v1
  tags:
  - Billing
  tags_raw:
  - billing
  properties:
  - type: OpenAPI
    url: openapi/notyfi-billing-api-openapi.yml
  - type: Documentation
    url: https://notyfi.com/docs
  - type: APIReference
    url: https://notyfi.com/docs
- aid: notyfi:notyfi-keys-api
  name: Notyfi keys API
  description: The keys API from Notyfi — 2 operation(s) for keys.
  humanURL: https://notyfi.com/docs
  baseURL: https://api.notyfi.com/api/v1
  tags:
  - Keys
  tags_raw:
  - keys
  properties:
  - type: OpenAPI
    url: openapi/notyfi-keys-api-openapi.yml
  - type: Documentation
    url: https://notyfi.com/docs
  - type: APIReference
    url: https://notyfi.com/docs
- aid: notyfi:notyfi-trackers-api
  name: Notyfi trackers API
  description: The trackers API from Notyfi — 6 operation(s) for trackers.
  humanURL: https://notyfi.com/docs
  baseURL: https://api.notyfi.com/api/v1
  tags:
  - Trackers
  tags_raw:
  - trackers
  properties:
  - type: OpenAPI
    url: openapi/notyfi-trackers-api-openapi.yml
  - type: Documentation
    url: https://notyfi.com/docs
  - type: APIReference
    url: https://notyfi.com/docs
- aid: notyfi:notyfi-webhooks-api
  name: Notyfi webhooks API
  description: The webhooks API from Notyfi — 4 operation(s) for webhooks.
  humanURL: https://notyfi.com/docs
  baseURL: https://api.notyfi.com/api/v1
  tags:
  - Webhook
  tags_raw:
  - webhooks
  properties:
  - type: OpenAPI
    url: openapi/notyfi-webhooks-api-openapi.yml
  - type: Documentation
    url: https://notyfi.com/docs
  - type: APIReference
    url: https://notyfi.com/docs
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/notyfi-openapi-overlay.yaml
- type: DeveloperPortal
  url: https://notyfi.com/docs
- type: Documentation
  url: https://notyfi.com/docs
- type: APIReference
  url: https://notyfi.com/docs
- type: Pricing
  url: https://notyfi.com/#pricing
- type: SignUp
  url: https://notyfi.com/dashboard/#signup
- type: TermsOfService
  url: https://notyfi.com/terms
- type: PrivacyPolicy
  url: https://notyfi.com/privacy
- type: MCPServer
  url: mcp/notyfi-mcp.yml
- type: Authentication
  url: authentication/notyfi-authentication.yml
- type: Conventions
  url: conventions/notyfi-conventions.yml
- type: Idempotency
  url: conventions/notyfi-conventions.yml
- type: ErrorCatalog
  url: errors/notyfi-error-codes.yml
- type: Lifecycle
  url: lifecycle/notyfi-lifecycle.yml
- type: Webhooks
  url: asyncapi/notyfi-webhooks.yml
- type: Conformance
  url: conformance/notyfi-conformance.yml
- type: DataModel
  url: data-model/notyfi-data-model.yml
- type: LLMsTxt
  url: llms/notyfi-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/notyfi-agentic-access.yml
- type: DomainSecurity
  url: security/notyfi-domain-security.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 17
  pass: local-v1