Offchain Labs (Arbitrum)

Offchain Labs is the team behind Arbitrum, a suite of Ethereum Layer 2 scaling technologies (Arbitrum One and Arbitrum Nova) built on the Nitro tech stack and the AnyTrust and Rollup protocols. Rather than a traditional REST API, Arbitrum exposes an Ethereum-compatible JSON-RPC interface plus Arbitrum-specific precompiles and the NodeInterface, and ships first-party developer tooling: the TypeScript Arbitrum SDK for bridging and cross-chain messaging, the Orbit SDK for launching custom Arbitrum chains, and the Stylus SDK (Rust/Wasm) with the cargo-stylus CLI for writing EVM-compatible smart contracts. This profile was seeded as a pantera-capital portfolio lead and enriched from Arbitrum's public developer surface.

Offchain Labs (Arbitrum) is profiled on the APIs.io network. Tagged areas include Company, Crypto, Blockchain, Ethereum, and Layer 2.

Offchain Labs (Arbitrum)’s developer surface includes documentation, API reference, getting-started guide, engineering blog, CLI, changelog, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

23.0/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1

0 APIs

CompanyCryptoBlockchainEthereumLayer 2RollupWeb3Smart ContractsDeveloper ToolsStylus

Kin Score

Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1

Composite quality — 23.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 10.0 / 20

Commercial Clarity 0.0 / 20

Operational Transparency 6.2 / 13

Governance 0.0 / 12

Discoverability 6.9 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

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 0 / 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

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/offchain-labs-arbitrum: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

ChangeLog

ChangeLog

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: offchain-labs-arbitrum
name: Offchain Labs (Arbitrum)
description: 'Offchain Labs is the team behind Arbitrum, a suite of Ethereum Layer 2 scaling technologies (Arbitrum One and
  Arbitrum Nova) built on the Nitro tech stack and the AnyTrust and Rollup protocols. Rather than a traditional REST API,
  Arbitrum exposes an Ethereum-compatible JSON-RPC interface plus Arbitrum-specific precompiles and the NodeInterface, and
  ships first-party developer tooling: the TypeScript Arbitrum SDK for bridging and cross-chain messaging, the Orbit SDK for
  launching custom Arbitrum chains, and the Stylus SDK (Rust/Wasm) with the cargo-stylus CLI for writing EVM-compatible smart
  contracts. This profile was seeded as a pantera-capital portfolio lead and enriched from Arbitrum''s public developer surface.'
url: https://raw.githubusercontent.com/api-evangelist/offchain-labs-arbitrum/refs/heads/main/apis.yml
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://github.com/OffchainLabs.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- pantera-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-20'
tags:
- Company
- Crypto
- Blockchain
- Ethereum
- Layer 2
- Rollup
- Web3
- Smart Contracts
- Developer Tools
- Stylus
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://offchainlabs.com/
- type: DeveloperPortal
  url: https://docs.arbitrum.io/
- type: Documentation
  url: https://docs.arbitrum.io/
- type: APIReference
  url: https://docs.arbitrum.io/arbitrum-essentials/arbitrum-vs-ethereum/rpc-methods
- type: GettingStarted
  url: https://docs.arbitrum.io/build-decentralized-apps/quickstart-solidity-remix
- type: GitHubOrganization
  url: https://github.com/OffchainLabs
- type: Blog
  url: https://blog.arbitrum.io/
- type: StatusPage
  url: https://status.arbitrum.io/
- type: LLMsTxt
  url: llms/offchain-labs-arbitrum-llms.txt
- type: Packages
  url: packages/offchain-labs-arbitrum-packages.yml
- type: SDKs
  url: packages/offchain-labs-arbitrum-packages.yml
- type: CLI
  url: cli/offchain-labs-arbitrum-cli.yml
- type: ChangeLog
  url: changelog/offchain-labs-arbitrum-changelog.yml
- type: Lifecycle
  url: lifecycle/offchain-labs-arbitrum-lifecycle.yml
- type: DomainSecurity
  url: security/offchain-labs-arbitrum-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/offchain-labs-arbitrum-vulnerability-disclosure.yml
- type: Security
  url: https://immunefi.com/bug-bounty/arbitrum/
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 8
  pass: local-v1