longwatch-dev

Longwatch provides a monitoring API for intermittent AI agents, offering managed change detection for public web pages, RSS feeds, crypto price thresholds, and SEC filings. Users can retrieve unseen alerts via cursor through MCP or REST, with a paid watch including seven days of polling. The service operates without requiring an API key or account, enabling seamless integration for AI-driven monitoring tasks.

longwatch-dev publishes 3 API contracts indexed on the APIs.io network, including MCP API, website monitoring API, and 1 more. Tagged areas include Company, Monitoring, AI, Web, and Finance.

The longwatch-dev catalog on APIs.io includes 1 Spectral governance ruleset.

longwatch-dev’s developer surface includes documentation, pricing, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

38.1/100 thin Agent 40/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 MCP Servers 1 Agent Skills

Company MonitoringAIWeb Finance

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 38.1/100 · thin

Contract Quality 10.5 / 21

Developer Ergonomics 3.5 / 17

Access Clarity 8.9 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.2 / 10

Discoverability 5.5 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 40/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

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 Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
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

4 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 20.8 — up to +15.8 composite points
Contract Quality scores 49.4 — up to +12.7 composite points
Operational Transparency scores 10.5 — up to +11.6 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/longwatch-dev/apis.yml: open an issue on github.com/api-evangelist/longwatch-dev 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 →

APIs 3

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

Longwatch Monitoring API

Monitoring API for intermittent AI agents, offering managed change detection for public web pages, RSS feeds, crypto price thresholds, and SEC filings.

longwatch-dev MCP API

The mcp API from longwatch-dev — 1 operation(s) for mcp.

longwatch-dev website monitoring API

The website monitoring API from longwatch-dev — 20 operation(s) for website monitoring.

MCP Servers 1

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

longwatch-dev MCP Server

Remote MCP server at longwatch.dev.

MCP SERVER

Agent Skills 1

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

longwatch-dev-website-monitoring

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Longwatch Dev Plans Pricing

35 plans

PLANS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

longwatch-dev API Rules

13 rules · 11 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

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

Longwatch Dev Domain Security

TLSv1.3

SECURITY

Longwatch Dev Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Longwatch Dev Agentic Access

22 operations · 18 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

Idempotency

Conventions

ErrorCatalog

Conformance

Access & Security 4

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

PrivacyPolicy

PrivacyPolicy

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Source (apis.yml)

aid: longwatch-dev
name: longwatch-dev
image: https://longwatch.dev/icon.svg
description: Longwatch provides a monitoring API for intermittent AI agents, offering managed change detection for public
  web pages, RSS feeds, crypto price thresholds, and SEC filings. Users can retrieve unseen alerts via cursor through MCP
  or REST, with a paid watch including seven days of polling. The service operates without requiring an API key or account,
  enabling seamless integration for AI-driven monitoring tasks.
url: https://artifacts.apis.io/longwatch-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Company
- Monitoring
- AI
- Web
- Finance
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/longwatch-dev-agentic-access.yml
- type: Plans
  url: plans/longwatch-dev-plans-pricing.yml
- type: Spectral
  url: rules/longwatch-dev-rules.yml
- type: Vocabulary
  url: vocabulary/longwatch-dev-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Idempotency
  url: conventions/longwatch-dev-conventions.yml
- type: Conventions
  url: conventions/longwatch-dev-conventions.yml
- type: Security
  url: https://longwatch.dev/
- type: ErrorCatalog
  url: errors/longwatch-dev-problem-types.yml
- type: Conformance
  url: conformance/longwatch-dev-conformance.yml
- type: LLMsTxt
  url: llms/longwatch-dev-llms.txt
- type: AgentCard
  url: a2a/longwatch-dev-a2a.yml
- type: MCPServer
  url: mcp/longwatch-dev-mcp.yml
- type: SecurityTxt
  url: well-known/longwatch-dev-security.txt
- type: WellKnown
  url: well-known/longwatch-dev-well-known.yml
- type: Hosts
  url: hosts/longwatch-dev-hosts.yml
- type: PrivacyPolicy
  url: https://longwatch.dev/privacy
- type: VulnerabilityDisclosure
  url: security/longwatch-dev-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/longwatch-dev-domain-security.yml
- type: Website
  url: https://longwatch.dev/
- type: Documentation
  url: https://longwatch.dev/docs
- type: DeveloperPortal
  url: https://longwatch.dev/developers
- type: Pricing
  url: https://longwatch.dev/pricing.md
apis:
- name: Longwatch Monitoring API
  description: Monitoring API for intermittent AI agents, offering managed change detection for public web pages, RSS feeds,
    crypto price thresholds, and SEC filings.
  humanURL: https://longwatch.dev/docs
  baseURL: https://api.longwatch.dev
  aid: longwatch-dev:longwatch-monitoring-api
- aid: longwatch-dev:longwatch-dev-mcp-api
  name: longwatch-dev MCP API
  description: The mcp API from longwatch-dev — 1 operation(s) for mcp.
  humanURL: https://longwatch.dev/docs
  baseURL: https://longwatch.dev
  tags:
  - mcp
  properties:
  - type: OpenAPI
    url: openapi/longwatch-dev-mcp-api-openapi.yml
- aid: longwatch-dev:longwatch-dev-website-monitoring-api
  name: longwatch-dev website monitoring API
  description: The website monitoring API from longwatch-dev — 20 operation(s) for website monitoring.
  humanURL: https://longwatch.dev/docs
  baseURL: https://longwatch.dev
  tags:
  - website monitoring
  properties:
  - type: OpenAPI
    url: openapi/longwatch-dev-website-monitoring-api-openapi.yml
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 26
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

longwatch-dev API — frequently asked questions

Does longwatch-dev have an API?

Yes. APIs.io lists 3 APIs from longwatch-dev, including Longwatch Monitoring API, longwatch-dev MCP API and longwatch-dev website monitoring API.

Is there an OpenAPI specification for the longwatch-dev API?

Yes. APIs.io indexes 2 OpenAPI specifications for longwatch-dev, each linked for download from this page.

How much does the longwatch-dev API cost?

APIs.io lists 35 pricing plans for longwatch-dev, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does longwatch-dev have an MCP server?

Yes. APIs.io lists 1 MCP server for longwatch-dev: Remote MCP server at longwatch.dev.

Is the longwatch-dev API ready for AI agents?

longwatch-dev has a Kin Score of 38.1 out of 100 (thin) and an Agent Readiness score of 40.2 (agent-ready), scored by API Evangelist on 2026-10-31.

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