Walrus Protocol

Walrus is a decentralized blob storage protocol built on Sui by Mysten Labs, the team behind the Sui blockchain. It provides robust, cost-effective storage for large binary objects with high-availability guarantees using Red Stuff erasure coding across a permissionless set of storage nodes. Data is content-addressed, immutable, verifiable without trusting any single provider, and portable across apps, providers, and AI agents. Developers interact through the `walrus` client CLI, a TypeScript SDK, and an HTTP API served by publisher (write) and aggregator (read) daemons, with storage paid in WAL and on-chain coordination in SUI. Walrus also powers Walrus Sites (decentralized web hosting) and Walrus Memory (a portable memory layer for AI agents). Backed by Electric Capital.

Walrus Protocol publishes 1 API on the APIs.io network: routes API. Tagged areas include Company, Infrastructure, Storage, Decentralized Storage, and Blockchain.

Walrus Protocol’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, pricing, changelog, and 26 more developer resources.

🌐 Visit website 📡 Source on GitHub

46.0/100 developing ▬ flat Agent 31/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessOpen

2 APIs

Company Infrastructure Storage Decentralized Storage Blockchain Web3 Data Artificial Intelligence Sui

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 46.0/100 · developing

Contract Quality 11.8 / 23

Developer Ergonomics 13.2 / 18

Access Clarity 5.7 / 18

Operational Transparency 4.0 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 31/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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

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.

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 github.com/api-evangelist/walrus-protocol: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

Walrus Protocol routes API

The routes API from Walrus Protocol — 9 operation(s) for routes.

Open Collections 2

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

API Collection

OPEN COLLECTION

Walrus Aggregator routes API

OPEN COLLECTION

Security Posture 2

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

Walrus Protocol Authentication

0 schemes

SECURITY

Walrus Protocol Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

DataModel

Conformance

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 3

Properties that don't map to a standard resource type

Overlay

Overlay

Whitepaper

Whitepaper

APICatalog

APICatalog

Source (apis.yml)

aid: walrus-protocol
name: Walrus Protocol
description: Walrus is a decentralized blob storage protocol built on Sui by Mysten Labs, the team behind the Sui blockchain.
  It provides robust, cost-effective storage for large binary objects with high-availability guarantees using Red Stuff erasure
  coding across a permissionless set of storage nodes. Data is content-addressed, immutable, verifiable without trusting any
  single provider, and portable across apps, providers, and AI agents. Developers interact through the `walrus` client CLI,
  a TypeScript SDK, and an HTTP API served by publisher (write) and aggregator (read) daemons, with storage paid in WAL and
  on-chain coordination in SUI. Walrus also powers Walrus Sites (decentralized web hosting) and Walrus Memory (a portable
  memory layer for AI agents). Backed by Electric Capital.
url: https://raw.githubusercontent.com/api-evangelist/walrus-protocol/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- electric-capital
x-tier: stub
x-tier-reason: portfolio-lead
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 22
  pass: local-v1
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  label: Open access
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://walrus.xyz/images/open-graph/og-home.jpg
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Infrastructure
- Storage
- Decentralized Storage
- Blockchain
- Web3
- Data
- Artificial Intelligence
- Sui
tags_raw:
- Company
- Infrastructure
- Storage
- Decentralized Storage
- Blockchain
- Web3
- Data
- AI
- Sui
apis:
- aid: walrus-protocol:walrus-protocol-routes-api
  name: Walrus Protocol routes API
  description: The routes API from Walrus Protocol — 9 operation(s) for routes.
  humanURL: https://docs.wal.app/docs/http-api/reading-blobs
  baseURL: https://aggregator.walrus-mainnet.walrus.space
  tags:
  - Routes
  tags_raw:
  - routes
  properties:
  - type: OpenAPI
    url: openapi/walrus-protocol-routes-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/walrus-protocol-aggregator-overlay.yaml
- type: DomainSecurity
  url: security/walrus-protocol-domain-security.yml
- type: Website
  url: https://www.walrus.xyz/
- type: DeveloperPortal
  url: https://docs.wal.app/
- type: Documentation
  url: https://docs.wal.app/
- type: APIReference
  url: https://docs.wal.app/docs/http-api
- type: GettingStarted
  url: https://docs.wal.app/docs/getting-started
- type: Blog
  url: https://blog.walrus.xyz/
- type: GitHubOrganization
  url: https://github.com/MystenLabs
- type: Support
  url: https://discord.gg/walrusprotocol
- type: Pricing
  url: https://costcalculator.wal.app/
- type: TermsOfService
  url: https://docs.wal.app/docs/legal/walrus_general_tos
- type: PrivacyPolicy
  url: https://docs.wal.app/docs/legal/privacy
- type: StatusPage
  url: https://status.walrus.xyz
- type: Whitepaper
  url: https://docs.wal.app/walrus.pdf
- type: ChangeLog
  url: https://github.com/MystenLabs/walrus/releases
- type: ChangeLog
  url: changelog/walrus-protocol-changelog.yml
- type: LLMsTxt
  url: llms/walrus-protocol-llms.txt
- type: WellKnown
  url: well-known/walrus-protocol-well-known.yml
- type: APICatalog
  url: well-known/walrus-protocol-api-catalog.json
- type: Packages
  url: packages/walrus-protocol-packages.yml
- type: SDKs
  name: TypeScript SDK
  url: packages/walrus-protocol-packages.yml
- type: CLI
  url: cli/walrus-protocol-cli.yml
- type: X-MCPServerCandidate
  url: mcp/walrus-protocol-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: Authentication
  url: authentication/walrus-protocol-authentication.yml
- type: Conventions
  url: conventions/walrus-protocol-conventions.yml
- type: Idempotency
  url: conventions/walrus-protocol-conventions.yml
- type: ErrorCatalog
  url: errors/walrus-protocol-problem-types.yml
- type: Lifecycle
  url: lifecycle/walrus-protocol-lifecycle.yml
- type: DataModel
  url: data-model/walrus-protocol-data-model.yml
- type: Conformance
  url: conformance/walrus-protocol-conformance.yml
- type: Sandbox
  url: sandbox/walrus-protocol-sandbox.yml
- type: AgentSkill
  url: skills/_index.yml

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/walrus-protocol"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/walrus-protocol/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/walrus-protocol/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.