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 contract indexed on the APIs.io network: Routes API. Tagged areas include Company, Infrastructure, Storage, Decentralized Storage, and Blockchain.

The Walrus Protocol catalog on APIs.io includes 1 Spectral governance ruleset.

Walrus Protocol’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, pricing, changelog, and 34 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

47.4/100 developing ▬ flat Agent 29/100 agent ready Front door AI 6/6 dominant Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessOpen

2 published contracts 2 Agent Skills

Company Infrastructure Storage Decentralized Storage Blockchain Web3 Data Artificial Intelligence Sui

What this lets a business do 1

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

Blockchain & Digital Assets

AE-240

Routes

PUT /v1/blobs

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 47.4/100 · developing

Contract Quality 8.4 / 19

Developer Ergonomics 11.0 / 15

Access Clarity 6.1 / 15

Operational Transparency 3.2 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · 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

Pagination 0 / 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 Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
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) Ask about this →

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 44.8 — up to +13.8 composite points Ask about this →
Access Clarity scores 40.4 — up to +11.9 composite points Ask about this →
Contract Governance scores 18.2 — up to +9.8 composite points Ask about this →

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.

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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/walrus-protocol/apis.yml: open an issue on github.com/api-evangelist/walrus-protocol 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 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 1

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

Walrus Aggregator routes API

OPEN COLLECTION

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

Store and read a blob on Walrus

AGENT SKILL

Store and read a Walrus quilt (batched small files)

AGENT SKILL

Walrus Protocol API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Walrus Protocol Plans Pricing

0 plans

PLANS

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

Walrus Protocol

11 quoted statements, read from Walrus Protocol's own page on 2026-11-10.

TERMS

Privacy & Data 1

Its role, the data it processes, retention and transfers, quoted from its own privacy page.

Walrus Protocol

19 quoted statements, read from Walrus Protocol's own page on 2026-11-10.

PRIVACY

Eligibility 1

Who may sign up and where, quoted from its own terms.

Walrus Protocol

7 quoted statements, read from Walrus Protocol's own page on 2026-11-10.

ELIGIBILITY

AI Preferences 1

Its stance on AI training, inference and agents, quoted from its own pages.

Walrus Protocol

2 quoted statements, read from Walrus Protocol's own page on 2026-11-10.

AI PREFS

Data License 1

How its data and outputs may be reused, quoted from its own terms.

Walrus Protocol

1 quoted statement, read from Walrus Protocol's own page on 2026-11-10.

LICENSE

FinOps 1

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

Walrus Protocol Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Walrus Protocol API Rules

57 rules · 46 error-severity 4 warn-severity 7 info-severity

SPECTRAL

OpenAPI Overlays 2

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Walrus Protocol Aggregator Overlay

3 actions · update · walrus-protocol-aggregator-openapi.json

DERIVED

Walrus Protocol Publisher Overlay

3 actions · update · walrus-protocol-publisher-openapi.json

DERIVED

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 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

AIPreferences

AIPreferences

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 6

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

UsageTerms

DataLicense

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Other 6

Properties that don't map to a standard resource type

CapabilityMap

Overlay

Whitepaper

APICatalog

DataProcessing

Eligibility

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-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-17
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
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: medium
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-11-13'
  method: derived
image: https://walrus.xyz/images/open-graph/og-home.jpg
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
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: CapabilityMap
  url: capabilities/walrus-protocol-capability-edges.yml
  name: Walrus Protocol Business Capability Map
- type: Plans
  url: plans/walrus-protocol-plans-pricing.yml
- url: https://blog.walrus.xyz/rss/
  type: BlogRSS
- 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
- type: UsageTerms
  url: terms/walrus-protocol-terms-of-service.yml
- type: DataProcessing
  url: privacy/walrus-protocol-privacy-policy.yml
- type: Eligibility
  url: eligibility/walrus-protocol-eligibility.yml
- type: AIPreferences
  url: ai-preferences/walrus-protocol-ai-preferences.yml
- type: DataLicense
  url: data-license/walrus-protocol-data-license.yml

Walrus Protocol API — frequently asked questions

Does Walrus Protocol have an API?

Yes. APIs.io lists 1 API from Walrus Protocol, including Walrus Protocol Routes API.

Is there an OpenAPI specification for the Walrus Protocol API?

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

How do I authenticate with the Walrus Protocol API?

Walrus Protocol uses bearer-token authentication (0 schemes). The details are profiled on APIs.io as Walrus Protocol Authentication.

Is the Walrus Protocol API ready for AI agents?

Walrus Protocol has a Kin Score of 47.4 out of 100 (developing) and an Agent Readiness score of 28.8 (agent-ready), scored by API Evangelist on 2026-11-13.

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