PlusMargin (Plus Margin) is a Bangkok, Thailand based digital marketing and business consulting practice operating under the tagline "Connect | Engage | Convert." The firm focuses on inbound marketing strategy, personalized and AI-assisted marketing, buyer-persona development, and customer-journey mapping for its clients, and publishes Thai-language editorial content across marketing, business, advertising, technology, learning, insurance, and lifestyle topics. It was surfaced as a portfolio company of 500 Global — where secondary sources describe an earlier Singapore-founded "predictive persuasion" e-commerce personalization product — but the domain today serves a four-page consulting and content site with no trace of that platform. Enrichment on 2026-08-12 confirmed no product API, no developer portal, no SDKs on any package registry, no /.well-known/ discovery surface, no llms.txt and no agent card. The one callable, machine-readable surface is the stock WordPress REST API the marketing site exposes at /wp-json — 237 routes across 11 namespaces, anonymously readable for content — which is WordPress core's API rather than a product PlusMargin designed, documents, or supports.
PlusMargin publishes 2 APIs on the APIs.io network. Tagged areas include Company, Marketing, Digital Marketing, Consulting, and Advertising.
PlusMargin’s developer surface includes authentication and 13 more developer resources.
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.
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/plusmargin: open an issue to ask a question, or submit a pull request to add artifacts.
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The stock WordPress REST API exposed by PlusMargin's marketing site. The root discovery document at /wp-json self-identifies as "Plus Margin" (url https://plusmargin.com) and re...
aid: plusmargin
deliveryModel:
model: saas
open_source: false
commercial: true
callable_host: false
label: Hosted service · you call their endpoint
confidence: medium
source:
- pricing
generated: '2026-08-28'
method: derived
accessModel:
pricing: unknown
onboarding: unknown
trial: false
try_now: false
public: false
label: Unknown
confidence: low
source: []
generated: '2026-07-22'
method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/plusmargin.png
name: PlusMargin
description: PlusMargin (Plus Margin) is a Bangkok, Thailand based digital marketing and business consulting practice operating
under the tagline "Connect | Engage | Convert." The firm focuses on inbound marketing strategy, personalized and AI-assisted
marketing, buyer-persona development, and customer-journey mapping for its clients, and publishes Thai-language editorial
content across marketing, business, advertising, technology, learning, insurance, and lifestyle topics. It was surfaced
as a portfolio company of 500 Global — where secondary sources describe an earlier Singapore-founded "predictive persuasion"
e-commerce personalization product — but the domain today serves a four-page consulting and content site with no trace of
that platform. Enrichment on 2026-08-12 confirmed no product API, no developer portal, no SDKs on any package registry,
no /.well-known/ discovery surface, no llms.txt and no agent card. The one callable, machine-readable surface is the stock
WordPress REST API the marketing site exposes at /wp-json — 237 routes across 11 namespaces, anonymously readable for content
— which is WordPress core's API rather than a product PlusMargin designed, documents, or supports.
url: https://raw.githubusercontent.com/api-evangelist/plusmargin/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-12'
tags:
- Company
- Marketing
- Digital Marketing
- Consulting
- Advertising
- Customer Engagement
- Thailand
apis:
- aid: plusmargin:wordpress-rest-api
name: PlusMargin WordPress REST API
description: The stock WordPress REST API exposed by PlusMargin's marketing site. The root discovery document at /wp-json
self-identifies as "Plus Margin" (url https://plusmargin.com) and registers 237 routes across 11 namespaces — wp/v2 content
routes plus plugin namespaces (yoast/v1, redirection/v1, contact-form-7/v1, wp-smush/v1, wp-block-editor/v1, wp-site-health/v1,
wp-abilities/v1, oembed/1.0 and two site-specific namespaces). Core content collections — posts, pages, categories, tags,
types, users, media, search — are readable with no credentials. This is WordPress core's API surface, not a product PlusMargin
designed, documents, or supports; it is catalogued because it is the only callable machine-readable interface the company
serves. Write operations and the Abilities API require WordPress Application Password credentials.
humanURL: https://developer.wordpress.org/rest-api/
baseURL: https://plusmargin.com/wp-json
tags:
- Content
- REST
- JSON
- WordPress
- CMS
properties:
- type: Documentation
url: https://developer.wordpress.org/rest-api/
- type: APIReference
url: https://developer.wordpress.org/rest-api/reference/
- type: Authentication
url: authentication/plusmargin-authentication.yml
- type: Conventions
url: conventions/plusmargin-conventions.yml
- type: ErrorCatalog
url: errors/plusmargin-problem-types.yml
- type: RateLimits
url: rate-limits/plusmargin-rate-limits.yml
x-discovery:
root: https://plusmargin.com/wp-json
status: 200
advertised_by: 'Link: <https://plusmargin.com/wp-json/>; rel="https://api.w.org/"'
routes: 237
namespaces: 11
checked: '2026-08-12'
x-note: Ownership verified per STEP 0c — the document is served from the company's own apex host and names itself "Plus
Margin" with url https://plusmargin.com. No OpenAPI describes it; /openapi.json, /openapi.yaml and /swagger.json all 404
on this host.
- aid: plusmargin:rss-feed
name: PlusMargin RSS Feed
description: RSS 2.0 syndication feed for PlusMargin's editorial content — Thai-language articles across Marketing, Business,
Advertising, Technology, Learning, Insurance, Science and Lifestyle. Served as application/rss+xml with no authentication.
A Yoast-generated sitemap index is also published, covering post, page, category, tag and author URLs.
humanURL: https://plusmargin.com/
baseURL: https://plusmargin.com/feed/
tags:
- Feed
- RSS
- Syndication
- Content
properties:
- type: BlogRSS
url: https://plusmargin.com/feed/
- type: Sitemap
url: https://plusmargin.com/sitemap.xml
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
- FN: APIs.json
email: info@apis.io
common:
- type: Website
url: https://plusmargin.com
- type: About
url: https://plusmargin.com/about/
- type: Contact
url: https://plusmargin.com/contact/
- type: PrivacyPolicy
url: https://plusmargin.com/privacy-policy/
- type: DomainSecurity
url: security/plusmargin-domain-security.yml
- type: BlogRSS
url: https://plusmargin.com/feed/
- type: Sitemap
url: https://plusmargin.com/sitemap.xml
- type: Authentication
url: authentication/plusmargin-authentication.yml
- type: Conventions
url: conventions/plusmargin-conventions.yml
- type: ErrorCatalog
url: errors/plusmargin-problem-types.yml
- type: RateLimits
url: rate-limits/plusmargin-rate-limits.yml
- type: Plans
url: plans/plusmargin-plans-pricing.yml
- type: Packages
url: packages/plusmargin-packages.yml
- type: LLMsTxt
url: llms/plusmargin-llms.txt
x-enrichment:
date: '2026-08-12'
status: minimal
artifacts_added: 8
pass: local-v1
x-coverage:
state: none
reason: no-developer-program
detail: PlusMargin runs a four-page WordPress consulting site — its own page sitemap lists only /, /about/, /contact/ and
/privacy-policy/ — with no developer, API, docs or pricing page, no api/developer/docs subdomain (all NXDOMAIN), and no
package on any registry; the only machine-readable surface is the CMS's own /wp-json route index.
evidence:
- url: https://plusmargin.com/page-sitemap.xml
status: 200
- url: https://plusmargin.com/openapi.json
status: 404
- url: https://plusmargin.com/.well-known/agent-card.json
status: 404
- url: https://plusmargin.com/llms.txt
status: 404
- url: https://plusmargin.com/wp-json
status: 200
checked: '2026-08-12'
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