Hyperledger

Hyperledger is an open source collaborative effort created to advance cross-industry blockchain technologies, originally hosted under the Linux Foundation and now stewarded by LF Decentralized Trust. It hosts enterprise-grade blockchain frameworks including Fabric, Besu, Indy, Iroha, and Cacti, along with tools like Firefly and Caliper for blockchain development, identity, and operations.

Hyperledger publishes 5 API contracts indexed on the APIs.io network, including Eth API, and 4 more. Tagged areas include Blockchain, Distributed Ledger, Enterprise, Linux Foundation, and Smart Contracts.

The Hyperledger catalog on APIs.io includes 1 Spectral governance ruleset.

Hyperledger’s developer surface includes documentation, engineering blog, and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

20.9/100 emerging ▬ flat Agent 15/100 agent aware Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract

Blockchain Distributed Ledger Enterprise Linux Foundation Smart Contracts

Kin Score

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

Composite quality — 20.9/100 · emerging

Contract Quality 7.8 / 19

Developer Ergonomics 1.8 / 15

Access Clarity 1.2 / 15

Operational Transparency 1.3 / 10

Contract Governance 0.9 / 9

Discoverability 4.3 / 8

Regulatory Posture 0.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 15/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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 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 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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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

10 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 7.9 — up to +18.4 composite points
Developer Ergonomics scores 11.9 — up to +17.6 composite points
Contract Quality scores 41.6 — up to +14.6 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/hyperledger/apis.yml: open an issue on github.com/api-evangelist/hyperledger 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 →

Standards implemented 1

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)

APIs 5

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

Hyperledger Fabric API

Hyperledger Fabric is a permissioned distributed ledger platform. Programmatic access is provided via the Fabric Gateway, peer gRPC APIs, and SDKs for chaincode invocation, ledg...

Hyperledger FireFly API

Hyperledger FireFly is a multiparty system orchestration framework providing REST APIs for tokens, messages, identities, contracts, and events across multiple blockchain protocols.

Hyperledger Indy API

Hyperledger Indy provides tools, libraries, and reusable components for decentralized identities rooted on blockchains. APIs are exposed via the Indy SDK and Indy Node REST endp...

Hyperledger Cacti API

Hyperledger Cacti (formerly Cactus) is a pluggable enterprise-grade framework for cross-chain transactions, providing connector plugins and REST APIs for interoperability across...

Hyperledger Eth API

Standard Ethereum JSON-RPC methods.

Open Collections 2

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

Hyperledger Besu JSON-RPC Eth API

OPEN COLLECTION

Hyperledger Besu JSON-RPC API

OPEN COLLECTION

Hyperledger API pricing

Not yet checked against Hyperledger's own pricing page. Compiled by API Evangelist on 2026-05-05 from lfdecentralizedtrust.org/projects; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Open Source (Apache 2.0) freemium	Free
LF Decentralized Trust Membership subscription	—
Member Commercial Offerings enterprise	—

Plan details, limits and sources →

Rate limits

Hyperledger Besu - JSON-RPC HTTP active connections: 80 concurrent connections
Hyperledger Besu - JSON-RPC WebSocket active connections: 80 concurrent connections
Hyperledger Fabric - peer concurrent gRPC streams: operator-configured concurrent streams

Compiled by API Evangelist, not yet checked against Hyperledger's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Hyperledger Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Hyperledger Rate Limits

5 limits

RATE LIMITS

Service Levels 1

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

Hyperledger

SLA

FinOps 1

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

Hyperledger Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Hyperledger — jsonschema rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 2

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

JsonRpcRequest

4 properties

JSON SCHEMA

JsonRpcResponse

4 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Hyperledger Structure

0 properties

JSON STRUCTURE

Security Posture 1

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

Hyperledger Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Hyperledger Agentic Access

1 operation · 1 acting

1 operations · 1 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 2

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

LFDTGitHub

LFDTGitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

LFDecentralizedTrust

LFDecentralizedTrust

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

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Wiki

Wiki

Source (apis.yml)

aid: hyperledger
name: Hyperledger
description: Hyperledger is an open source collaborative effort created to advance cross-industry blockchain technologies,
  originally hosted under the Linux Foundation and now stewarded by LF Decentralized Trust. It hosts enterprise-grade blockchain
  frameworks including Fabric, Besu, Indy, Iroha, and Cacti, along with tools like Firefly and Caliper for blockchain development,
  identity, and operations.
type: Index
deliveryModel:
  model: unknown
  license_evidence:
    not_product:
    - hyperledger/besu
    - hyperledger/cacti
    - hyperledger/fabric
    - hyperledger/firefly
    - hyperledger/indy-node
  open_source: unknown
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  try_now_blocked_by: example-domain
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/hyperledger.png
tags:
- Blockchain
- Distributed Ledger
- Enterprise
- Linux Foundation
- Smart Contracts
created: '2026-03-16'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/hyperledger/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: hyperledger:hyperledger-fabric-api
  name: Hyperledger Fabric API
  description: Hyperledger Fabric is a permissioned distributed ledger platform. Programmatic access is provided via the Fabric
    Gateway, peer gRPC APIs, and SDKs for chaincode invocation, ledger queries, and channel administration.
  humanURL: https://hyperledger-fabric.readthedocs.io/
  tags:
  - Blockchain
  - Distributed Ledger
  - Permissioned
  - Smart Contracts
  properties:
  - type: Documentation
    url: https://hyperledger-fabric.readthedocs.io/en/latest/
  - type: GatewayDocs
    url: https://hyperledger.github.io/fabric-gateway/
  - type: GitHub
    url: https://github.com/hyperledger/fabric
- aid: hyperledger:hyperledger-firefly-api
  name: Hyperledger FireFly API
  description: Hyperledger FireFly is a multiparty system orchestration framework providing REST APIs for tokens, messages,
    identities, contracts, and events across multiple blockchain protocols.
  humanURL: https://hyperledger.github.io/firefly/
  tags:
  - Blockchain
  - Multiparty
  - Tokens
  - Web3
  properties:
  - type: Documentation
    url: https://hyperledger.github.io/firefly/latest/reference/api/
  - type: GitHub
    url: https://github.com/hyperledger/firefly
- aid: hyperledger:hyperledger-indy-api
  name: Hyperledger Indy API
  description: Hyperledger Indy provides tools, libraries, and reusable components for decentralized identities rooted on
    blockchains. APIs are exposed via the Indy SDK and Indy Node REST endpoints.
  humanURL: https://www.hyperledger.org/projects/hyperledger-indy
  tags:
  - Decentralized Identity
  - DID
  - Identity
  - Self-Sovereign Identity
  tags_raw:
  - Decentralized Identity
  - Did
  - Identity
  - Self-Sovereign Identity
  properties:
  - type: Documentation
    url: https://hyperledger-indy.readthedocs.io/
  - type: GitHub
    url: https://github.com/hyperledger/indy-node
- aid: hyperledger:hyperledger-cacti-api
  name: Hyperledger Cacti API
  description: Hyperledger Cacti (formerly Cactus) is a pluggable enterprise-grade framework for cross-chain transactions,
    providing connector plugins and REST APIs for interoperability across DLTs.
  humanURL: https://hyperledger-cacti.github.io/cacti/
  tags:
  - Blockchain
  - Interoperability
  - Cross-Chain
  properties:
  - type: Documentation
    url: https://hyperledger-cacti.github.io/cacti/
  - type: GitHub
    url: https://github.com/hyperledger/cacti
- aid: hyperledger:hyperledger-eth-api
  name: Hyperledger Eth API
  description: Standard Ethereum JSON-RPC methods.
  humanURL: https://besu.hyperledger.org/
  baseURL: https://besu.example.com
  tags:
  - ETH
  tags_raw:
  - Eth
  properties:
  - type: OpenAPI
    url: openapi/hyperledger-eth-api-openapi.yml
  - type: Documentation
    url: https://besu.hyperledger.org/public-networks/reference/api
  - type: GitHub
    url: https://github.com/hyperledger/besu
common:
- type: Plans
  url: plans/hyperledger-plans-pricing.yml
- type: RateLimits
  url: rate-limits/hyperledger-rate-limits.yml
- type: FinOps
  url: finops/hyperledger-finops.yml
- type: Website
  url: https://www.lfdecentralizedtrust.org/
- type: AgenticAccess
  url: agentic-access/hyperledger-agentic-access.yml
- type: DomainSecurity
  url: security/hyperledger-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/hyperledger-project
- type: Documentation
  name: Hyperledger Documentation
  url: https://www.hyperledger.org/use
- type: LFDecentralizedTrust
  name: LF Decentralized Trust
  url: https://lfdecentralizedtrust.org/
- type: GitHubOrg
  name: Hyperledger GitHub
  url: https://github.com/hyperledger
- type: LFDTGitHub
  name: LF Decentralized Trust GitHub
  url: https://github.com/LF-Decentralized-Trust
- type: Wiki
  url: https://wiki.lfdecentralizedtrust.org/
- url: https://www.lfdecentralizedtrust.org/blog/rss.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Hyperledger API — frequently asked questions

Does Hyperledger have an API?

Yes. APIs.io lists 5 APIs from Hyperledger, including Hyperledger Fabric API, Hyperledger FireFly API and Hyperledger Indy API, and 2 more.

Is there an OpenAPI specification for the Hyperledger API?

Yes. APIs.io indexes 1 OpenAPI specification for Hyperledger, each linked for download from this page.

How much does the Hyperledger API cost?

APIs.io lists 3 pricing plans for Hyperledger, with each plan's price, limits and inclusions under Pricing on this page.

Is the Hyperledger API ready for AI agents?

Hyperledger has a Kin Score of 20.9 out of 100 (emerging) and an Agent Readiness score of 15.4 (agent-aware), scored by API Evangelist on 2026-11-06.

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