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 API contracts indexed 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 and 1 Spectral governance ruleset.

Notyfi’s developer surface includes engineering blog, documentation, API reference, pricing, signup flow, authentication, and 18 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

26.8/100 thin ▬ flat Agent 35/100 agent ready Front door AI 5/6 prominent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers 2 Agent Skills

Company Notification Monitoring Webhook Real-Time Agents MCP Alerts

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Developer Platform & API Ecosystem Management

BC-4270

KeysWebhooks

POST /api/v1/webhooks POST /api/v1/webhooks/{webhook_id}/rotate-secret POST /api/v1/keys DELETE /api/v1/keys/{key_id}

Subscription Billing & Revenue Management

BC-4250

Billing

GET /api/v1/billing POST /api/v1/billing/checkout POST /api/v1/billing/portal

Kin Score

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

Composite quality — 26.8/100 · thin

Contract Quality 10.1 / 19

Developer Ergonomics 2.4 / 15

Access Clarity 0.0 / 15

Operational Transparency 0.8 / 10

Contract Governance 1.6 / 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

Pagination 0 / 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 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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

7 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 16.1 — up to +16.8 composite points
Operational Transparency scores 7.9 — up to +12.0 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/notyfi/apis.yml: open an issue on github.com/api-evangelist/notyfi 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)

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

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 5

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

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

Remote MCP server at mcp.notyfi.com over HTTP; 6 tools listed.

MCP SERVER

Agent Skills 2

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

Create a Notyfi tracker and read its events

AGENT SKILL

Subscribe to Notyfi tracker events over webhooks

AGENT SKILL

Event Specifications 1

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

Notyfi Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Notyfi API Rules

55 rules · 50 errors 4 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Notyfi Openapi Overlay

2 actions · update · notyfi-openapi-original.json

DERIVED

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 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: 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: '2026-11-06'
  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: '2026-10-06'
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:
- url: https://perceptronml.com/blog/
  type: Blog
- type: CapabilityMap
  url: capabilities/notyfi-capability-edges.yml
  name: Notyfi Business Capability Map
- 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

Notyfi API — frequently asked questions

Does Notyfi have an API?

Yes. APIs.io lists 5 APIs from Notyfi, including Notyfi Account API, Notyfi Billing API and Notyfi Keys API, and 2 more.

Is there an OpenAPI specification for the Notyfi API?

Yes. APIs.io indexes 5 OpenAPI specifications for Notyfi, each linked for download from this page.

How do I authenticate with the Notyfi API?

Notyfi uses bearer-token authentication (apiKey/http · 2 schemes). The details are profiled on APIs.io as Notyfi Authentication.

Does Notyfi have an MCP server?

Yes. APIs.io lists 1 MCP server for Notyfi: Remote MCP server at mcp.notyfi.com over HTTP; 6 tools listed.

Is the Notyfi API ready for AI agents?

Notyfi has a Kin Score of 26.8 out of 100 (thin) and an Agent Readiness score of 34.9 (agent-ready), scored by API Evangelist on 2026-11-06.

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