Black Forest Labs

Black Forest Labs is the company behind the Flux family of image generation models. The Flux API exposes asynchronous image generation endpoints via global and regional base URLs with model-named paths (e.g. /v1/flux-2-pro). Models include FLUX.2 (flex/pro/max/klein), FLUX.1 Kontext, FLUX1.1 [pro] Ultra, FLUX1.1 [pro], FLUX.1 Fill, and FLUX Schnell. Auth via BFL_API_KEY bearer token.

Black Forest Labs publishes 4 API contracts indexed on the APIs.io network, including Editing API, Generation API, Utility API, and 1 more. Tagged areas include Artificial Intelligence, Image Generation, Flux, Open Weights, and BFL.

The Black Forest Labs catalog on APIs.io includes 1 Spectral governance ruleset.

Black Forest Labs’ developer surface includes authentication, documentation, GitHub presence, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.8/100 thin ▬ flat Agent 31/100 agent ready Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessPaid

2 published contracts 1 MCP Servers

Artificial Intelligence Image Generation Flux Open WeightsBFL

What this lets a business do 1

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

AI Model Services

AE-110

Models

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 30.8/100 · thin

Contract Quality 8.6 / 19

Developer Ergonomics 3.6 / 15

Access Clarity 4.3 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.6 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 31/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 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 5 / 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):

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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
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
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)

8 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 23.8 — up to +15.2 composite points
Access Clarity scores 28.9 — up to +14.2 composite points
Contract Quality scores 46.1 — up to +13.5 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/black-forest-labs/apis.yml: open an issue on github.com/api-evangelist/black-forest-labs 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
Hugging Face Hub Organisations	covered	34.5 (thin)	-	-

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OpenAPI

measured — observed by APIs.io (published)

APIs 4

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

Flux Image Generation API

REST API for asynchronous image generation across the Flux model family. Submit a generation request, then poll the returned polling_url for the result. Global endpoint at https...

Black Forest Labs Editing API

Image editing tools (fill, expand, erase).

Black Forest Labs Generation API

Image generation endpoints.

Black Forest Labs Utility API

Result polling, credits, fine-tune management.

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Black Forest Labs FLUX Editing API

OPEN COLLECTION

Black Forest Labs FLUX Editing Generation API

OPEN COLLECTION

Black Forest Labs FLUX Editing Utility API

OPEN COLLECTION

Black Forest Labs FLUX API

OPEN COLLECTION

MCP Servers 1

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

Black Forest Labs MCP Server

Remote MCP server at docs.bfl.ai over HTTP.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Black Forest Labs Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Black Forest Labs Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Black Forest Labs Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Black Forest Labs API Rules

59 rules · 47 errors 8 warnings 4 info

SPECTRAL

Security Posture 2

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

Black Forest Labs Authentication

apiKey · 1 scheme

SECURITY

Black Forest Labs Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Black Forest Labs Agentic Access

13 operations · 9 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: black-forest-labs
url: https://raw.githubusercontent.com/api-evangelist/black-forest-labs/refs/heads/main/apis.yml
name: Black Forest Labs
kind: company
description: Black Forest Labs is the company behind the Flux family of image generation models. The Flux API exposes asynchronous
  image generation endpoints via global and regional base URLs with model-named paths (e.g. /v1/flux-2-pro). Models include
  FLUX.2 (flex/pro/max/klein), FLUX.1 Kontext, FLUX1.1 [pro] Ultra, FLUX1.1 [pro], FLUX.1 Fill, and FLUX Schnell. Auth via
  BFL_API_KEY bearer token.
deliveryModel:
  model: saas
  license_evidence:
    not_product:
    - black-forest-labs/flux
  open_source: unknown
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: low
  source:
  - openapi
  - pricing
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - url: https://blackforestlabs.ai/
    status: 301
    note: declared website redirects to https://bfl.ai/ — a different registrable domain (blackforestlabs.ai -> bfl.ai), possible
      rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-11-02'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/black-forest-labs.png
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-20
tags:
- Artificial Intelligence
- Image Generation
- Flux
- Open Weights
- BFL
tags_raw:
- AI
- Image Generation
- Flux
- Open Weights
- BFL
- Image-Generation
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
apis:
- aid: black-forest-labs:flux
  name: Flux Image Generation API
  description: REST API for asynchronous image generation across the Flux model family. Submit a generation request, then
    poll the returned polling_url for the result. Global endpoint at https://api.bfl.ai with regional alternatives at https://api.eu.bfl.ai
    (GDPR) and https://api.us.bfl.ai. Model-name path pattern /v1/{model}.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.bfl.ai/
  baseURL: https://api.bfl.ai
  tags:
  - Image Generation
  - Flux
  - Async
  - Polling
  - Image Editing
  tags_raw:
  - Image Generation
  - Flux
  - Async
  - Polling
  - Text-to-Image
  - Image Editing
  - Image-Generation
  properties:
  - type: Documentation
    url: https://docs.bfl.ai/
  - type: Signup
    url: https://dashboard.bfl.ai/
  - type: Pricing
    url: https://bfl.ai/pricing
  - type: LlmsText
    url: https://docs.bfl.ml/llms.txt
  - type: GitHub
    url: https://github.com/black-forest-labs/flux
- aid: black-forest-labs:black-forest-labs-editing-api
  name: Black Forest Labs Editing API
  description: Image editing tools (fill, expand, erase).
  humanURL: https://docs.bfl.ai/
  baseURL: https://api.bfl.ai
  tags:
  - Editing
  properties:
  - type: OpenAPI
    url: openapi/black-forest-labs-editing-api-openapi.yml
- aid: black-forest-labs:black-forest-labs-generation-api
  name: Black Forest Labs Generation API
  description: Image generation endpoints.
  humanURL: https://docs.bfl.ai/
  baseURL: https://api.bfl.ai
  tags:
  - Generation
  properties:
  - type: OpenAPI
    url: openapi/black-forest-labs-generation-api-openapi.yml
- aid: black-forest-labs:black-forest-labs-utility-api
  name: Black Forest Labs Utility API
  description: Result polling, credits, fine-tune management.
  humanURL: https://docs.bfl.ai/
  baseURL: https://api.bfl.ai
  tags:
  - Utility
  properties:
  - type: OpenAPI
    url: openapi/black-forest-labs-utility-api-openapi.yml
common:
- type: CapabilityMap
  url: capabilities/black-forest-labs-capability-edges.yml
  name: Black Forest Labs Business Capability Map
- type: AgenticAccess
  url: agentic-access/black-forest-labs-agentic-access.yml
- type: DomainSecurity
  url: security/black-forest-labs-domain-security.yml
- type: Authentication
  url: authentication/black-forest-labs-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/bflai
- type: Website
  url: https://blackforestlabs.ai/
- type: Documentation
  url: https://docs.bfl.ai/
- type: GitHub
  url: https://github.com/black-forest-labs
- type: Plans
  url: plans/black-forest-labs-plans-pricing.yml
- type: RateLimits
  url: rate-limits/black-forest-labs-rate-limits.yml
- type: FinOps
  url: finops/black-forest-labs-finops.yml
- type: Blog
  url: https://bfl.ai/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Black Forest Labs API — frequently asked questions

Does Black Forest Labs have an API?

Yes. APIs.io lists 4 APIs from Black Forest Labs, including Flux Image Generation API, Black Forest Labs Editing API and Black Forest Labs Generation API, and 1 more.

Is there an OpenAPI specification for the Black Forest Labs API?

Yes. APIs.io indexes 3 OpenAPI specifications for Black Forest Labs, each linked for download from this page.

How do I authenticate with the Black Forest Labs API?

Black Forest Labs uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Black Forest Labs Authentication.

How much does the Black Forest Labs API cost?

APIs.io lists 2 pricing plans for Black Forest Labs, with each plan's price, limits and inclusions under Pricing Plans on this page.

Does Black Forest Labs have an MCP server?

Yes. APIs.io lists 1 MCP server for Black Forest Labs: Remote MCP server at docs.bfl.ai over HTTP.

Is the Black Forest Labs API ready for AI agents?

Black Forest Labs has a Kin Score of 30.8 out of 100 (thin) and an Agent Readiness score of 31.0 (agent-ready), scored by API Evangelist on 2026-11-02.

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