List Bulb

List Bulb is a hand‑reviewed AI and SaaS directory that helps founders and product teams discover, launch, and promote their tools. The platform offers a searchable catalog, pricing information, and a developer portal with an MCP server and OpenAPI spec for integration. It also provides blog content, changelog, and resources for AI agents and crawlers, aiming to increase visibility through dofollow backlinks and community engagement.

List Bulb is listed with 2 APIs on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Software-as-a-Service, Directory, and Startups.

The List Bulb catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

List Bulb’s developer surface includes changelog, authentication, getting-started guide, documentation, API reference, pricing, engineering blog, and 19 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

39.3/100 developing Agent 25/100 agent aware Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

2 APIs 1 MCP Servers

Company Artificial Intelligence Software-as-a-Service Directory Startups

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 39.3/100 · developing

Contract Quality 5.3 / 21

Developer Ergonomics 7.3 / 17

Access Clarity 10.7 / 17

Operational Transparency 2.3 / 11

Contract Governance 2.0 / 10

Discoverability 4.8 / 9

Regulatory Posture 3.4 / 15

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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

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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It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/listbulb/"><img src="https://apis.io/badge/listbulb/card.svg" alt="List Bulb on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

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/listbulb: 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 2

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

List Bulb API

API for List Bulb directory

List Bulb API

List Bulb API as documented publicly: 5 operations. Contract generated from the documentation by API Evangelist (2026-10-18); not the provider's own document.

MCP Servers 1

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

List Bulb MCP Server

Remote MCP server at www.listbulb.com.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Listbulb Plans Pricing

3 plans

PLANS

Semantic Vocabularies 1

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

Listbulb Context

6 classes · 20 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

List Bulb API Rules

13 rules · 12 errors 1 info

SPECTRAL

JSON Schema 6

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

GetApiV1CategoriesResponse

1 properties

JSON SCHEMA

GetApiV1OpenapiJsonResponse

1 properties

JSON SCHEMA

GetApiV1ToolsResponse

1 properties

JSON SCHEMA

GetApiV1ToolsSlugResponse

13 properties

JSON SCHEMA

PostApiV1ToolsRequest

6 properties

JSON SCHEMA

PostApiV1ToolsResponse

2 properties

JSON SCHEMA

Security Posture 2

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

Listbulb Authentication

1 scheme

SECURITY

Listbulb Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

WellKnown

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

Conformance

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Changelog

Changelog

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: listbulb
name: List Bulb
image: https://www.listbulb.com/og-image.png?v=56b7d08e
description: List Bulb is a hand‑reviewed AI and SaaS directory that helps founders and product teams discover, launch, and
  promote their tools. The platform offers a searchable catalog, pricing information, and a developer portal with an MCP server
  and OpenAPI spec for integration. It also provides blog content, changelog, and resources for AI agents and crawlers, aiming
  to increase visibility through dofollow backlinks and community engagement.
url: https://raw.githubusercontent.com/api-evangelist/listbulb/refs/heads/main/apis.yml
x-type: company
x-source: harvest:g2-catalog
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-18 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-18'
modified: '2026-10-18'
tags:
- Company
- Artificial Intelligence
- Software-as-a-Service
- Directory
- Startups
tags_raw:
- Company
- AI
- SaaS
- Directory
- Startup
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/listbulb-plans-pricing.yml
- type: Spectral
  url: rules/listbulb-rules.yml
- type: JSONLD
  url: json-ld/listbulb-context.jsonld
- type: Vocabulary
  url: vocabulary/listbulb-vocabulary.yml
- type: DataModel
  url: data-model/listbulb-data-model.yml
- type: ChangeLog
  url: changelog/listbulb-changelog.yml
- type: Idempotency
  url: conventions/listbulb-conventions.yml
- type: Conventions
  url: conventions/listbulb-conventions.yml
- type: Authentication
  url: authentication/listbulb-authentication.yml
- type: Conformance
  url: conformance/listbulb-conformance.yml
- type: LLMsTxt
  url: llms/listbulb-llms.txt
- type: MCPServer
  url: mcp/listbulb-mcp.yml
- type: WellKnown
  url: well-known/listbulb-well-known.yml
- type: Hosts
  url: hosts/listbulb-hosts.yml
- type: Vendors
  url: vendors/listbulb-vendors.yml
- type: GitHubOrganization
  url: https://github.com/hakimuddinkika
- type: GettingStarted
  url: https://www.listbulb.com/docs/getting-started
- type: DomainSecurity
  url: security/listbulb-domain-security.yml
- type: Website
  url: https://listbulb.com/
- type: Documentation
  url: https://listbulb.com/docs
- type: APIReference
  url: https://listbulb.com/docs/api
- type: Pricing
  url: https://listbulb.com/pricing
- type: Blog
  url: https://listbulb.com/blog
- type: Changelog
  url: https://listbulb.com/changelog
- type: TermsOfService
  url: https://listbulb.com/terms
- type: PrivacyPolicy
  url: https://listbulb.com/privacy-policy
apis:
- name: List Bulb API
  description: API for List Bulb directory
  humanURL: https://listbulb.com/docs/api
  baseURL: https://api.listbulb.com
  aid: listbulb:list-bulb-api
- aid: listbulb:listbulb-api
  name: List Bulb API
  description: 'List Bulb API as documented publicly: 5 operations. Contract generated from the documentation by API Evangelist
    (2026-10-18);

    not the provider''s own document.'
  humanURL: https://listbulb.com/docs/api
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/listbulb-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/listbulb-post-api-v1-tools-response-schema.json
  - type: JSONSchema
    url: json-schema/listbulb-get-api-v1-tools-slug-response-schema.json
  - type: JSONSchema
    url: json-schema/listbulb-post-api-v1-tools-request-schema.json
  - type: JSONSchema
    url: json-schema/listbulb-get-api-v1-categories-response-schema.json
  - type: JSONSchema
    url: json-schema/listbulb-get-api-v1-tools-response-schema.json
  - type: JSONSchema
    url: json-schema/listbulb-get-api-v1-openapi-json-response-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: API documentation provides limits and errors but no OpenAPI or other machine-readable contract.
  evidence:
  - url: https://listbulb.com/docs/api/reference
    status: 200
  checked: '2026-10-18'
x-enrichment:
  date: '2026-10-18'
  status: enriched
  artifacts_added: 28
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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