fettle-sh

Fettle provides hosted uptime monitoring services tailored for developers and their AI agents. It offers HTTP, TCP, ping, DNS, SSL checks across multiple regions, along with cron job heartbeats. The platform includes a public REST API and an MCP server on every plan, enabling integration and automation for monitoring tasks. Paid plans start at $9/month, with a free tier available.

fettle-sh publishes 2 API contracts indexed on the APIs.io network, including fettle.sh Api API, and 1 more. Tagged areas include Monitoring, Uptime, Developers, AI Agents, and API.

The fettle-sh catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 1 Spectral governance ruleset.

fettle-sh’s developer surface includes authentication, getting-started guide, documentation, pricing, engineering blog, API reference, and 23 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

61.7/100 strong Agent 48/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 Agent Skills

Monitoring Uptime Developers AI AgentsAPI

Kin Score

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

Composite quality — 61.7/100 · strong

Contract Quality 13.8 / 21

Developer Ergonomics 8.5 / 17

Access Clarity 13.0 / 17

Operational Transparency 6.9 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 6.0 / 15

Agent readiness — 48/100 · agent ready

Machine-Readable Contract 18 / 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 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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 6 / 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):

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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's

2 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 50.0 — up to +10.0 composite points
Contract Governance scores 22.0 — up to +9.4 composite points
Contract Quality scores 64.9 — up to +8.8 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/fettle-sh/apis.yml: open an issue on github.com/api-evangelist/fettle-sh 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 2

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

fettle API

Public REST API for Fettle uptime monitoring service

fettle.sh Api API

fettle.sh Api API: 136 operations.

Agent Skills 1

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

monitor-management

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Fettle Sh Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fettle Sh Rate Limits

5 limits

RATE LIMITS

Event Specifications 1

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

Fettle Sh Webhooks

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Fettle Sh Context

120 classes · 174 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

fettle-sh API Rules

12 rules · 6 errors 4 warnings 2 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

HeartbeatRead

17 properties

JSON SCHEMA

IncidentRead

14 properties

JSON SCHEMA

MonitorRead

23 properties

JSON SCHEMA

SslCheckResponse

17 properties

JSON SCHEMA

StatusPagePublicRead

12 properties

JSON SCHEMA

SubscriptionSummary

13 properties

JSON SCHEMA

Security Posture 3

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

Fettle Sh Authentication

1 scheme

SECURITY

Fettle Sh Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Fettle Sh Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Fettle Sh Scopes

2 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Conformance

Webhooks

DataModel

ErrorCatalog

Scroll for all 7

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 5

Authentication, authorization, and security posture

Security

Security

Authentication

Authentication

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: fettle-sh
name: fettle-sh
image: https://fettle.sh/og/home?v=sha-0cd041cbeb92
description: Fettle provides hosted uptime monitoring services tailored for developers and their AI agents. It offers HTTP,
  TCP, ping, DNS, SSL checks across multiple regions, along with cron job heartbeats. The platform includes a public REST
  API and an MCP server on every plan, enabling integration and automation for monitoring tasks. Paid plans start at $9/month,
  with a free tier available.
url: https://artifacts.apis.io/fettle-sh/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- Monitoring
- Uptime
- Developers
- AI Agents
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/fettle-sh-rules.yml
- type: JSONLD
  url: json-ld/fettle-sh-context.jsonld
- type: Vocabulary
  url: vocabulary/fettle-sh-vocabulary.yml
- type: Conformance
  url: conformance/fettle-sh-conformance.yml
- type: Plans
  url: plans/fettle-sh-plans-pricing.yml
- type: Webhooks
  url: asyncapi/fettle-sh-webhooks.yml
- type: DataModel
  url: data-model/fettle-sh-data-model.yml
- type: Security
  url: security/fettle-sh-vulnerability-disclosure.yml
- type: Authentication
  url: authentication/fettle-sh-authentication.yml
- type: ErrorCatalog
  url: errors/fettle-sh-problem-types.yml
- type: LLMsTxt
  url: llms/fettle-sh-llms.txt
- type: SecurityTxt
  url: well-known/fettle-sh-security.txt
- type: WellKnown
  url: well-known/fettle-sh-well-known.yml
- type: Hosts
  url: hosts/fettle-sh-hosts.yml
- type: Vendors
  url: vendors/fettle-sh-vendors.yml
- type: SDKs
  url: packages/fettle-sh-packages.yml
- type: Packages
  url: packages/fettle-sh-packages.yml
- type: StatusPage
  url: https://status.fettle.sh/fettle-platform
- type: Login
  url: https://fettle.sh/login
- type: GettingStarted
  url: https://fettle.sh/docs/quickstart
- type: VulnerabilityDisclosure
  url: security/fettle-sh-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/fettle-sh-domain-security.yml
- type: Website
  url: https://fettle.sh/
- type: Documentation
  url: https://fettle.sh/docs
- type: Pricing
  url: https://fettle.sh/pricing
- type: Blog
  url: https://fettle.sh/blog
- type: TermsOfService
  url: https://fettle.sh/terms
- type: PrivacyPolicy
  url: https://fettle.sh/privacy
- type: APIReference
  url: https://api.fettle.sh/public-api/docs
apis:
- name: fettle API
  description: Public REST API for Fettle uptime monitoring service
  humanURL: https://api.fettle.sh/public-api/docs
  baseURL: https://api.fettle.sh
  aid: fettle-sh:fettle-api
- aid: fettle-sh:fettle-sh-api-api
  name: fettle.sh Api API
  description: 'fettle.sh Api API: 136 operations.'
  humanURL: https://api.fettle.sh/openapi.json
  properties:
  - type: OpenAPI
    url: openapi/_original/fettle-sh-api-openapi.json
  - type: JSONSchema
    url: json-schema/fettle-sh-monitor-read-schema.json
  - type: JSONSchema
    url: json-schema/fettle-sh-subscription-summary-schema.json
  - type: JSONSchema
    url: json-schema/fettle-sh-status-page-public-read-schema.json
  - type: JSONSchema
    url: json-schema/fettle-sh-heartbeat-read-schema.json
  - type: JSONSchema
    url: json-schema/fettle-sh-incident-read-schema.json
  - type: JSONSchema
    url: json-schema/fettle-sh-ssl-check-response-schema.json
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 34
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

fettle-sh API — frequently asked questions

Does fettle-sh have an API?

Yes. APIs.io lists 2 APIs from fettle-sh, including fettle API and fettle.sh Api API.

Is there an OpenAPI specification for the fettle-sh API?

Yes. APIs.io indexes 1 OpenAPI specification for fettle-sh, each linked for download from this page.

How do I authenticate with the fettle-sh API?

fettle-sh documents its authentication (1 scheme). The details are profiled on APIs.io as Fettle Sh Authentication.

How much does the fettle-sh API cost?

APIs.io lists 5 pricing plans for fettle-sh, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the fettle-sh API ready for AI agents?

fettle-sh has a Kin Score of 61.7 out of 100 (strong) and an Agent Readiness score of 48.4 (agent-ready), scored by API Evangelist on 2026-10-31.

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