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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Blng the way a machine reads it — 22 machine-readable artifacts across 4 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Blng scores 49.1/100 (developing), with a separate agent-readiness read of 34/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-10 · rubric v0.20.0
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title="Blng on API Evangelist — API profile and Kin Score">
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</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Blng
Each block below is one kind of artifact we hold for Blng. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 14
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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.
Scroll within the panel for all 14 ·
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Blng Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Blng Rate Limits
RATE LIMITSEvent Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Blng Webhooks
ASYNCAPISecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Blng — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 5
Pagination, idempotency, versioning, errors, and events
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 5
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/blng · machine-readable index on apis.io
This is an independent, third-party profile of Blng, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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