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 17 more developer resources.

🌐 Visit website 📡 Source on GitHub

24.6/100 emerging ▬ flat Agent 35/100 agent ready Front door AI 5/6 prominent saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

1 APIs 1 MCP Servers

Company Notification Monitoring Webhook Real-Time Agents MCP Alerts

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 24.6/100 · emerging

Contract Quality 10.1 / 19

Developer Ergonomics 2.1 / 15

Access Clarity 0.0 / 15

Operational Transparency 0.8 / 10

Contract Governance 0.4 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 35/100 · 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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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 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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/notyfi: 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 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

LLMsTxt

AgentSkill

AgenticAccess

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Webhooks

Conformance

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

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

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).'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  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://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: '2026-09-16'
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: Website
  url: https://notyfi.com
- 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

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