Blng

BLNG is an AI-driven creative suite for the jewelry industry, giving jewelers, designers, brands, and retailers tools to explore, refine, and present designs fast and without compromise. Its Design product turns sketches, doodles, photos, illustrations, or text prompts into photorealistic renderings on web and iOS; Studio transforms CAD models into market-ready marketing photos and videos at scale; and Retail enables live, made-to-order design in-store. BLNG is a Speedinvest portfolio company. BLNG publishes no developer program, but the web application is backed by three first-party REST APIs whose OpenAPI definitions are served publicly and unauthenticated behind Swagger UI on its own hosts — a Journey API for design journeys, prompts, image assets and 3D model generation, a User API for users, workspaces, invitations, organizations and subscriptions, and a Billing API for Stripe-backed products, checkout and subscription webhooks. All three authenticate with AWS Cognito bearer tokens issued at auth.app.blng.ai.

Blng publishes 16 API contracts indexed on the APIs.io network, including User API, Billing API, Chat Prompts API, and 13 more. Tagged areas include Company, Jewelry, Generative AI, Design, and Creative Tools.

The Blng catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Blng’s developer surface includes documentation, getting-started guide, pricing, engineering blog, support, signup flow, authentication, and 24 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

54.1/100 developing ▬ flat Agent 33/100 agent ready Front door AI 4/6 moderate Heartbeat 20/100 slowing saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve

3 published contracts 3 Agent Skills

Company Jewelry Generative AI Design Creative Tools Rendering Marketing Retail 3D Models Image Generation Workspace Billing OpenAPIAWS Cognito

What this lets a business do 4

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

AI Model Services

AE-110

Chat PromptsPrompts

POST /design/journeys/{journeyId}/chat-prompt

Subscription Lifecycle Management

BC-4240

SubscriptionUser Subscription

POST /subscriptions PUT /subscriptions/{subscriptionId}

Subscription Billing & Revenue Management

BC-4250

Billing

Media, Creator & Social

AE-170

Design Journey

GET /design/assets POST /design/assets/upload GET /design/journeys/{journeyId}/images GET /design/journeys/{journeyId}/images/{imageId}

Kin Score

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

Composite quality — 54.1/100 · developing

Contract Quality 9.7 / 19

Developer Ergonomics 7.4 / 15

Access Clarity 11.8 / 15

Operational Transparency 2.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.4 / 8

Regulatory Posture 5.5 / 15

Create-or-Update Ergonomics 1.1 / 10

Agent readiness — 33/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 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 4 / 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 AI & Biometrics 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
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
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)
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs

4 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 51.5 — up to +12.1 composite points
Developer Ergonomics scores 49.4 — up to +10.1 composite points
Operational Transparency scores 23.7 — up to +9.9 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/blng/apis.yml: open an issue on github.com/api-evangelist/blng 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 →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
XR & Graphics (XR, 3D, GPU graphics)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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.

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 16

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

BLNG User API

REST API that manages BLNG users, roles and permissions, workspaces and workspace members, workspace and subscription invitations, organizations, SSO configuration, marketing co...

BLNG Billing API

REST API that manages BLNG payment and billing — listing Stripe products and prices, creating Stripe checkout sessions and customer-portal sessions, confirming checkout, and sub...

Blng Chat Prompts API

The Chat Prompts API from Blng — 2 operation(s) for chat prompts.

Blng Composite API

The Composite API from Blng — 2 operation(s) for composite.

Blng Design Journey API

The Design Journey API from Blng — 16 operation(s) for design journey.

Blng Invitation API

The Invitation API from Blng — 5 operation(s) for invitation.

Blng Journeys API

The Journeys API from Blng — 6 operation(s) for journeys.

Blng Organization API

The Organization API from Blng — 3 operation(s) for organization.

Blng Prompts API

The Prompts API from Blng — 4 operation(s) for prompts.

Blng Subscription API

The Subscription API from Blng — 4 operation(s) for subscription.

Blng User Subscription API

The User Subscription API from Blng — 3 operation(s) for user subscription.

Blng User Tooltip API

The User Tooltip API from Blng — 2 operation(s) for user tooltip.

Blng Webhook API

The Webhook API from Blng — 3 operation(s) for webhook.

Blng Workspace API

The Workspace API from Blng — 15 operation(s) for workspace.

Blng User Library API

The User Library API from Blng — 2 operation(s) for user library.

Blng User Settings API

The User Settings API from Blng — 1 operation(s) for user settings.

Scroll for all 16

Agent Skills 3

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

blng-generate-a-3d-model

AGENT SKILL

blng-manage-workspace-membership

AGENT SKILL

blng-run-a-design-journey

AGENT SKILL

Blng API pricing

Prices published by Blng, read 2026-10-28 from blng.ai/pricing. A free plan or tier is listed.

Plan	Price
Starter	Free Includes: 1 editor, 3 design files, 24 hour history, 4 artistic styles, Premium quality
Professional	$49/user/month Includes: Everything in Starter, plus: Unlimited design files, Unlimited history, Priority queue, Full design
Enterprise	Let’s talk Includes: Everything in Professional, plus: Unlimited teams and editors, Customized AI models, Custom artistic
RETAIL Enterprise	Contact us Includes: Everything in DESIGN Enterprise, plus: Store license, Retail POS System integration, Client manageme
STUDIO Enterprise	Contact us Includes: Product photography, on-body photography and videos, 360-degree videos, custom templates, DAM & CAD

Plan details, limits and sources →

Rate limits

Chat prompt concurrency: concurrent
Workspace invitation resend cooldown: cooldown

Compiled by API Evangelist, not yet checked against Blng's documentation. Rate-limit details →

Billed by: user · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Blng Plans Pricing

5 plans

PLANS

Blng Price Estimates

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Blng Rate Limits

2 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Blng

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Blng Finops

FINOPS

Event Specifications 1

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

Blng Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Blng API Rules

54 rules · 38 errors 11 warnings 5 info

SPECTRAL

OpenAPI Overlays 3

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.

Blng Billing Api Overlay

4 actions · servers · blng-billing-api-openapi.yml

DERIVED

Blng Journey Api Overlay

4 actions · servers · blng-journey-api-openapi.yml

DERIVED

Blng User Api Overlay

4 actions · servers · blng-user-api-openapi.yml

DERIVED

Security Posture 3

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

Blng Authentication

http/oauth2 · 2 schemes

SECURITY

Blng Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Blng Trust Center

trust center published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Blng Scopes

4 scopes · implicit

4 scopes

SCOPES

Agentic Access 1

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

Blng Agentic Access

88 operations · 49 acting · 3 human-in-the-loop

88 operations · 49 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conventions

ErrorCatalog

DataModel

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

DomainSecurity

TrustCenter

TrustCenter

Authentication

OAuthScopes

Operate 4

Status, limits, changes, and where to get help

HelpCenter

Support

StatusPage

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

Plans

TermsOfService

PrivacyPolicy

Company 4

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Instagram

Instagram

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: blng
name: Blng
description: BLNG is an AI-driven creative suite for the jewelry industry, giving jewelers, designers, brands, and retailers
  tools to explore, refine, and present designs fast and without compromise. Its Design product turns sketches, doodles, photos,
  illustrations, or text prompts into photorealistic renderings on web and iOS; Studio transforms CAD models into market-ready
  marketing photos and videos at scale; and Retail enables live, made-to-order design in-store. BLNG is a Speedinvest portfolio
  company. BLNG publishes no developer program, but the web application is backed by three first-party REST APIs whose OpenAPI
  definitions are served publicly and unauthenticated behind Swagger UI on its own hosts — a Journey API for design journeys,
  prompts, image assets and 3D model generation, a User API for users, workspaces, invitations, organizations and subscriptions,
  and a Billing API for Stripe-backed products, checkout and subscription webhooks. All three authenticate with AWS Cognito
  bearer tokens issued at auth.app.blng.ai.
url: https://raw.githubusercontent.com/api-evangelist/blng/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- speedinvest
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - https://blng.ai/pricing
  - https://billing.blng.ai/billing/products
  generated: '2026-08-13'
  method: probed
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
image: https://cdn.sanity.io/images/4x3qe5zn/production/5354c7992cf9027bbe7400e2c4079f2c46e40cd8-4800x2520.png?w=1200&h=630
tags:
- Company
- Jewelry
- Generative AI
- Design
- Creative Tools
- Rendering
- Marketing
- Retail
- 3D Models
- Image Generation
- Workspace
- Billing
- OpenAPI
- AWS Cognito
tags_raw:
- Company
- Jewelry
- Generative AI
- Design
- Creative Tools
- Rendering
- Marketing
- Retail
- 3D Models
- Image Generation
- Workspaces
- Billing
- OpenAPI
- AWS Cognito
- Image-Generation
apis:
- name: BLNG User API
  description: REST API that manages BLNG users, roles and permissions, workspaces and workspace members, workspace and subscription
    invitations, organizations, SSO configuration, marketing consent, tooltips, and user subscriptions. Also exposes composite
    operations that create an organization, subscription and user in a single call. Authenticated with AWS Cognito user tokens,
    plus a client-credentials machine token for the billing integration.
  humanURL: https://users.blng.ai/
  baseURL: https://users.blng.ai
  tags:
  - Workspace
  - User
  - Organization
  - Subscription
  - SSO
  tags_raw:
  - Workspaces
  - Users
  - Organizations
  - Subscriptions
  - SSO
  properties:
  - type: OpenAPI
    url: openapi/blng-user-api-openapi.yml
  - type: APIReference
    url: https://users.blng.ai/
  - type: Overlay
    url: overlays/blng-user-api-overlay.yaml
- name: BLNG Billing API
  description: REST API that manages BLNG payment and billing — listing Stripe products and prices, creating Stripe checkout
    sessions and customer-portal sessions, confirming checkout, and submitting enterprise "contact sales" inquiries. Also
    declares three Stripe webhook receivers for checkout completion and subscription update/delete. The product catalog endpoint
    answers unauthenticated.
  humanURL: https://billing.blng.ai/
  baseURL: https://billing.blng.ai
  tags:
  - Billing
  - Payments
  - Stripe
  - Subscription
  tags_raw:
  - Billing
  - Payments
  - Stripe
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/blng-billing-api-openapi.yml
  - type: APIReference
    url: https://billing.blng.ai/
  - type: Overlay
    url: overlays/blng-billing-api-overlay.yaml
- aid: blng:blng-chat-prompts-api
  name: Blng Chat Prompts API
  description: The Chat Prompts API from Blng — 2 operation(s) for chat prompts.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Chat Prompts
  properties:
  - type: OpenAPI
    url: openapi/blng-chat-prompts-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-composite-api
  name: Blng Composite API
  description: The Composite API from Blng — 2 operation(s) for composite.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Composite
  properties:
  - type: OpenAPI
    url: openapi/blng-composite-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-design-journey-api
  name: Blng Design Journey API
  description: The Design Journey API from Blng — 16 operation(s) for design journey.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Design Journey
  properties:
  - type: OpenAPI
    url: openapi/blng-design-journey-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-invitation-api
  name: Blng Invitation API
  description: The Invitation API from Blng — 5 operation(s) for invitation.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Invitation
  properties:
  - type: OpenAPI
    url: openapi/blng-invitation-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-journeys-api
  name: Blng Journeys API
  description: The Journeys API from Blng — 6 operation(s) for journeys.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Journeys
  properties:
  - type: OpenAPI
    url: openapi/blng-journeys-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-organization-api
  name: Blng Organization API
  description: The Organization API from Blng — 3 operation(s) for organization.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Organization
  properties:
  - type: OpenAPI
    url: openapi/blng-organization-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-prompts-api
  name: Blng Prompts API
  description: The Prompts API from Blng — 4 operation(s) for prompts.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Prompts
  properties:
  - type: OpenAPI
    url: openapi/blng-prompts-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-subscription-api
  name: Blng Subscription API
  description: The Subscription API from Blng — 4 operation(s) for subscription.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Subscription
  properties:
  - type: OpenAPI
    url: openapi/blng-subscription-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-user-subscription-api
  name: Blng User Subscription API
  description: The User Subscription API from Blng — 3 operation(s) for user subscription.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - User Subscription
  properties:
  - type: OpenAPI
    url: openapi/blng-user-subscription-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-user-tooltip-api
  name: Blng User Tooltip API
  description: The User Tooltip API from Blng — 2 operation(s) for user tooltip.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - User Tooltip
  properties:
  - type: OpenAPI
    url: openapi/blng-user-tooltip-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-webhook-api
  name: Blng Webhook API
  description: The Webhook API from Blng — 3 operation(s) for webhook.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Webhook
  properties:
  - type: OpenAPI
    url: openapi/blng-webhook-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-workspace-api
  name: Blng Workspace API
  description: The Workspace API from Blng — 15 operation(s) for workspace.
  humanURL: https://journeys.blng.ai/
  baseURL: https://journeys.blng.ai/v2
  tags:
  - Workspace
  properties:
  - type: OpenAPI
    url: openapi/blng-workspace-api-openapi.yml
  - type: APIReference
    url: https://journeys.blng.ai/
- aid: blng:blng-user-library-api
  name: Blng User Library API
  description: The User Library API from Blng — 2 operation(s) for user library.
  humanURL: https://users.blng.ai/
  baseURL: https://users.blng.ai
  tags:
  - User Library
  properties:
  - type: OpenAPI
    url: openapi/blng-user-library-api-openapi.yml
- aid: blng:blng-user-settings-api
  name: Blng User Settings API
  description: The User Settings API from Blng — 1 operation(s) for user settings.
  humanURL: https://users.blng.ai/
  baseURL: https://users.blng.ai
  tags:
  - User Settings
  properties:
  - type: OpenAPI
    url: openapi/blng-user-settings-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/blng-capability-edges.yml
  name: Blng Business Capability Map
- type: Overlay
  url: overlays/blng-journey-api-overlay.yaml
- type: AgenticAccess
  url: agentic-access/blng-agentic-access.yml
- type: DomainSecurity
  url: security/blng-domain-security.yml
- type: Website
  url: https://blng.ai
- type: Documentation
  url: https://docs.blng.ai/
- type: GettingStarted
  url: https://docs.blng.ai/getting-started/
- type: HelpCenter
  url: https://portal.blng.ai/
- type: Pricing
  url: https://blng.ai/pricing
- type: Plans
  url: plans/blng-plans-pricing.yml
- type: Blog
  url: https://blng.ai/news
- type: Support
  url: mailto:support@blng.ai
- type: SignUp
  url: https://app.blng.ai/
- type: TermsOfService
  url: https://blng.ai/terms
- type: PrivacyPolicy
  url: https://blng.ai/privacy-policy
- type: LinkedIn
  url: https://www.linkedin.com/company/blng-ai/
- type: Instagram
  url: https://www.instagram.com/blng.ai/
- type: GitHubOrganization
  url: https://github.com/blng-ai
- type: StatusPage
  url: https://status.blng.ai/
- type: Lifecycle
  url: lifecycle/blng-lifecycle.yml
- type: TrustCenter
  url: https://trust.blng.ai/
- type: TrustCenter
  url: security/blng-trust-center.yml
- type: Authentication
  url: authentication/blng-authentication.yml
- type: OAuthScopes
  url: scopes/blng-scopes.yml
- type: Conventions
  url: conventions/blng-conventions.yml
- type: ErrorCatalog
  url: errors/blng-problem-types.yml
- type: DataModel
  url: data-model/blng-data-model.yml
- type: Conformance
  url: conformance/blng-conformance.yml
- type: RateLimits
  url: rate-limits/blng-rate-limits.yml
- type: LLMsTxt
  url: llms/blng-llms.txt
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 29
  pass: local-v1
  note: Round 1 recorded "no public developer API". That was wrong. STEP 0b contract discovery on the API hosts named in the
    application's own Content-Security-Policy found three real, public, unauthenticated OpenAPI definitions served behind
    Swagger UI at journeys.blng.ai, users.blng.ai and billing.blng.ai — 88 operations and 80 schemas. BLNG still publishes
    no developer program, no SDK, no MCP server and no agent card.
x-coverage:
  state: covered
  checked: '2026-08-13'

Blng API — frequently asked questions

Does Blng have an API?

Yes. APIs.io lists 16 APIs from Blng, including BLNG User API, BLNG Billing API and Blng Chat Prompts API, and 13 more.

Is there an OpenAPI specification for the Blng API?

Yes. APIs.io indexes 16 OpenAPI specifications for Blng, each linked for download from this page.

How do I authenticate with the Blng API?

Blng uses bearer-token authentication (http/oauth2 · 2 schemes). The details are profiled on APIs.io as Blng Authentication.

How much does the Blng API cost?

Blng publishes its prices; its Professional plan is $49/user/month as of 2026-10-28. APIs.io lists 5 pricing plans for Blng, with each plan's price, limits and inclusions under Pricing on this page.

Is the Blng API ready for AI agents?

Blng has a Kin Score of 54.1 out of 100 (developing) and an Agent Readiness score of 33.0 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/blng"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/blng/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/blng/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

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