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
22.9/100 emerging Agent 0/100 human only Full breakdown ↓
scored 2026-07-21 · rubric v0.4
0 APIs 0 Features
CompanyCryptoBlockchainEthereumLayer 2RollupWeb3Smart ContractsDeveloper ToolsStylus

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-21 · rubric v0.4
Composite quality — 22.9/100 · 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 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
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
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 →

Resources

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
GitHubOrganization
 Packages
Packages
 SDKs
SDKs
 CLI
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)

apis.yml Raw ↑ 
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
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