SpruceID website screenshot

SpruceID

SpruceID is a decentralized identity company providing open-source tools and infrastructure for governments and enterprises to issue, verify, and manage digital identity credentials. Their platform supports W3C Verifiable Credentials, Decentralized Identifiers (DIDs), OpenID for Verifiable Credential Issuance (OID4VCI), OpenID for Verifiable Presentations (OID4VP), Sign-In with Ethereum (SIWE), and ISO/IEC 18013-5 mobile driver's licenses (mDL). SpruceID's SpruceKit toolkit enables developers to build wallet apps, credential issuers, and verifier integrations using standards-based identity protocols.

SpruceID publishes 5 APIs on the APIs.io network, including Credentials API, Health API, Identifiers API, and 2 more. Tagged areas include Decentralized Identity, Verifiable Credentials, DIDs, Sign-In with Ethereum, and Identity Wallet.

SpruceID’s developer surface includes engineering blog, GitHub presence, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
21.3/100 emerging ▬ flat Agent 23/100 agent aware self hosted · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
1 APIs
Decentralized IdentityVerifiable CredentialsDIDsSign-In with EthereumIdentity WalletGovernmentOpenID ConnectW3C Standards

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 21.3/100 · emerging
Contract Quality 7.4 / 16
Developer Ergonomics 2.2 / 13
Access Clarity 0.0 / 13
Operational Transparency 1.8 / 8
Contract Governance 0.0 / 8
Discoverability 3.9 / 7
Regulatory Posture 1.7 / 15
Open Source Surface 2.5 / 10
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 23/100 · 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 8 / 8
Request/Response Examples 7 / 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
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector 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.
Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against 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 65 points between them, because both conditional facets apply and carry 35 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 65% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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/spruceid: 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 10

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

SpruceID Sign-In with Ethereum (SIWE) API

Sign-In with Ethereum (SIWE) enables Ethereum accounts to authenticate with off-chain services by signing a standardized message format (EIP-4361). SpruceID's SIWE library provi...

SpruceID SSI Core Library API

The SpruceID SSI (Self-Sovereign Identity) core library provides a comprehensive Rust API for signing, issuing, and verifying W3C Verifiable Credentials and JSON Web Tokens. It ...

SpruceID OID4VCI Credential Issuance API

SpruceID's OID4VCI (OpenID for Verifiable Credential Issuance) Rust library implements the OpenID4VC credential issuance protocol, enabling credential issuers to deliver W3C Ver...

SpruceID OID4VP Verifiable Presentations API

SpruceID's OID4VP (OpenID for Verifiable Presentations) Rust library implements the OpenID4VC credential presentation protocol, enabling verifier applications to request and rec...

SpruceID isomdl Mobile Driver's License API

SpruceID's isomdl library provides a Rust implementation of the ISO/IEC 18013-5 standard for mobile driver's licenses (mDL). It enables issuers to create standards-compliant mDL...

SpruceID Credentials API

Issue and verify W3C Verifiable Credentials using the VC API specification. Supports both legacy (/issue/credentials, /verify/credentials) and current (/credentials/issue, /cred...

SpruceID Health API

Health check endpoints

SpruceID Identifiers API

DID resolution implementing the W3C DID Resolution HTTP binding.

SpruceID Presentations API

Issue and verify W3C Verifiable Presentations. Supports both legacy (/issue/presentations, /verify/presentations) and current (/presentations/issue, /presentations/verify) path ...

SpruceID Status API

Bitstring Status List credential endpoint for credential revocation status.

Scroll for all 10

Open Collections 6

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

API Collection

OPEN COLLECTION

SpruceID DIDKit HTTP Credentials API

OPEN COLLECTION

SpruceID DIDKit HTTP Credentials Health API

OPEN COLLECTION

SpruceID DIDKit HTTP Credentials Identifiers API

OPEN COLLECTION

SpruceID DIDKit HTTP Credentials Presentations API

OPEN COLLECTION

SpruceID DIDKit HTTP Credentials Status API

OPEN COLLECTION

Security Posture 1

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

Spruceid Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Spruceid Agentic Access

11 operations · 8 acting

11 operations · 8 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 4

Status, limits, changes, and where to get help

IssueTracker
IssueTracker
 Releases
Releases
 Contact
Contact
 Discord
Discord

Commercial 2

Pricing, plans, and the legal terms of use

License
License
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 2

Properties that don't map to a standard resource type

Developer
Developer
 KnowledgeBase
KnowledgeBase

Source (apis.yml)

apis.yml Raw ↑ 
name: SpruceID
description: SpruceID is a decentralized identity company providing open-source tools and infrastructure for governments and
  enterprises to issue, verify, and manage digital identity credentials. Their platform supports W3C Verifiable Credentials,
  Decentralized Identifiers (DIDs), OpenID for Verifiable Credential Issuance (OID4VCI), OpenID for Verifiable Presentations
  (OID4VP), Sign-In with Ethereum (SIWE), and ISO/IEC 18013-5 mobile driver's licenses (mDL). SpruceID's SpruceKit toolkit
  enables developers to build wallet apps, credential issuers, and verifier integrations using standards-based identity protocols.
deliveryModel:
  model: self-hosted
  license: Apache-2.0
  open_source: true
  commercial: false
  callable_host: false
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
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://spruceid.com/favicon.ico
tags:
- Decentralized Identity
- Verifiable Credentials
- DIDs
- Sign-In with Ethereum
- Identity Wallet
- Government
- OpenID Connect
- W3C Standards
created: '2026-06-14'
modified: '2026-06-14'
url: https://raw.githubusercontent.com/api-evangelist/spruceid/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- name: SpruceID Sign-In with Ethereum (SIWE) API
  description: Sign-In with Ethereum (SIWE) enables Ethereum accounts to authenticate with off-chain services by signing a
    standardized message format (EIP-4361). SpruceID's SIWE library provides client and server implementations in TypeScript
    for integrating Ethereum wallet-based authentication into web applications. The SIWE-OIDC component wraps SIWE in an OpenID
    Connect Identity Provider, enabling drop-in integration with OAuth 2.0 and OIDC flows. Supported wallets include MetaMask,
    Coinbase Wallet, and any WalletConnect-compatible wallet. ENS domain resolution is included for human-readable usernames.
  image: https://spruceid.com/favicon.ico
  humanURL: https://eips.ethereum.org/EIPS/eip-4361
  baseURL: https://oidc.spruceid.com
  tags:
  - Authentication
  - Sign-In with Ethereum
  - SIWE
  - OpenID Connect
  - Ethereum
  - Blockchain Identity
  properties:
  - type: Documentation
    url: https://spruceid.dev/docs/
  - type: GitHubRepository
    url: https://github.com/spruceid/siwe
  - type: GitHubRepository
    url: https://github.com/spruceid/siwe-oidc
  - type: NPMPackage
    url: https://www.npmjs.com/package/siwe
  contact:
  - FN: SpruceID Developer Support
    email: hello@spruceid.com
    X-github: https://github.com/spruceid
  meta:
  - key: EIP
    value: EIP-4361
  - key: OIDCDiscovery
    value: /.well-known/openid-configuration
- name: SpruceID SSI Core Library API
  description: The SpruceID SSI (Self-Sovereign Identity) core library provides a comprehensive Rust API for signing, issuing,
    and verifying W3C Verifiable Credentials and JSON Web Tokens. It supports VC Data Model 1.1 and 2.0, JWT-VC, Data Integrity
    proofs, BBS+ selective disclosure, and a wide range of cryptographic signature suites including EdDSA, secp256k1, P-256,
    and more. The library has undergone a Trail of Bits security audit and serves as the foundation for DIDKit and other SpruceID
    tooling.
  image: https://spruceid.com/favicon.ico
  humanURL: https://github.com/spruceid/ssi
  baseURL: https://crates.io/crates/ssi
  tags:
  - Verifiable Credentials
  - DIDs
  - Cryptography
  - W3C Standards
  - Rust Library
  - JWT
  - Selective Disclosure
  properties:
  - type: Documentation
    url: https://docs.rs/ssi/
  - type: GitHubRepository
    url: https://github.com/spruceid/ssi
  - type: RustCrate
    url: https://crates.io/crates/ssi
  contact:
  - FN: SpruceID Developer Support
    email: hello@spruceid.com
    X-github: https://github.com/spruceid
  meta:
  - key: SecurityAudit
    value: Trail of Bits (March 2022)
  - key: License
    value: Apache-2.0
- name: SpruceID OID4VCI Credential Issuance API
  description: SpruceID's OID4VCI (OpenID for Verifiable Credential Issuance) Rust library implements the OpenID4VC credential
    issuance protocol, enabling credential issuers to deliver W3C Verifiable Credentials to holder wallets. The protocol extends
    OAuth 2.0 with credential endpoint flows including pre-authorized code flow and authorization code flow. Supported credential
    formats include JWT-VC, LDP-VC, SD-JWT VC, and ISO/IEC 18013-5 mobile documents (mDL). Used as the issuance layer in the
    SpruceKit mobile SDK.
  image: https://spruceid.com/favicon.ico
  humanURL: https://github.com/spruceid/oid4vci-rs
  baseURL: https://openid.net/specs/openid-4-verifiable-credential-issuance-1_0.html
  tags:
  - Credential Issuance
  - OID4VCI
  - OpenID Connect
  - Verifiable Credentials
  - MDL
  - Authentication
  tags_raw:
  - Credential Issuance
  - OID4VCI
  - OpenID Connect
  - Verifiable Credentials
  - mDL
  - OAuth 2.0
  properties:
  - type: Documentation
    url: https://www.sprucekit.dev/
  - type: GitHubRepository
    url: https://github.com/spruceid/oid4vci-rs
  - type: Specification
    url: https://openid.net/specs/openid-4-verifiable-credential-issuance-1_0.html
  contact:
  - FN: SpruceID Developer Support
    email: hello@spruceid.com
    X-github: https://github.com/spruceid
  meta:
  - key: Language
    value: Rust
  - key: Protocol
    value: OID4VCI
- name: SpruceID OID4VP Verifiable Presentations API
  description: SpruceID's OID4VP (OpenID for Verifiable Presentations) Rust library implements the OpenID4VC credential presentation
    protocol, enabling verifier applications to request and receive verifiable credentials from holder wallets. The library
    handles presentation definitions, selective disclosure, and cryptographic proof verification. Supported credential formats
    include JWT-VC, LDP-VC, SD-JWT VC, and ISO/IEC 18013-5 mobile driver's licenses (mDL) for offline presentation. Integrates
    with SpruceKit mobile SDKs for iOS and Android wallet apps.
  image: https://spruceid.com/favicon.ico
  humanURL: https://github.com/spruceid/openid4vp
  baseURL: https://openid.net/specs/openid-4-verifiable-presentations-1_0.html
  tags:
  - Credential Verification
  - OID4VP
  - OpenID Connect
  - Verifiable Presentations
  - MDL
  - Privacy-Preserving
  tags_raw:
  - Credential Verification
  - OID4VP
  - OpenID Connect
  - Verifiable Presentations
  - mDL
  - Privacy-Preserving
  properties:
  - type: Documentation
    url: https://www.sprucekit.dev/
  - type: GitHubRepository
    url: https://github.com/spruceid/openid4vp
  - type: Specification
    url: https://openid.net/specs/openid-4-verifiable-presentations-1_0.html
  contact:
  - FN: SpruceID Developer Support
    email: hello@spruceid.com
    X-github: https://github.com/spruceid
  meta:
  - key: Language
    value: Rust
  - key: Protocol
    value: OID4VP
- name: SpruceID isomdl Mobile Driver's License API
  description: SpruceID's isomdl library provides a Rust implementation of the ISO/IEC 18013-5 standard for mobile driver's
    licenses (mDL). It enables issuers to create standards-compliant mDL credentials and verifiers to request and validate
    presentations both online and in offline (proximity) scenarios. The library is integrated into SpruceKit mobile SDKs for
    iOS and Android, supporting real-world deployment of government-issued digital identity documents.
  image: https://spruceid.com/favicon.ico
  humanURL: https://github.com/spruceid/isomdl
  baseURL: https://crates.io/crates/isomdl
  tags:
  - Mobile Driver's License
  - MDL
  - ISO 18013-5
  - Government Identity
  - Offline Verification
  tags_raw:
  - Mobile Driver's License
  - mDL
  - ISO 18013-5
  - Government Identity
  - Offline Verification
  properties:
  - type: Documentation
    url: https://www.sprucekit.dev/
  - type: GitHubRepository
    url: https://github.com/spruceid/isomdl
  - type: RustCrate
    url: https://crates.io/crates/isomdl
  contact:
  - FN: SpruceID Developer Support
    email: hello@spruceid.com
    X-github: https://github.com/spruceid
  meta:
  - key: Standard
    value: ISO/IEC 18013-5
  - key: Language
    value: Rust
- aid: spruceid:spruceid-credentials-api
  name: SpruceID Credentials API
  description: Issue and verify W3C Verifiable Credentials using the VC API specification. Supports both legacy (/issue/credentials,
    /verify/credentials) and current (/credentials/issue, /credentials/verify) path styles.
  humanURL: https://spruceid.dev/docs/didkit/
  baseURL: https://localhost:8080
  tags:
  - Credentials
  properties:
  - type: OpenAPI
    url: openapi/spruceid-credentials-api-openapi.yml
  - type: Documentation
    url: https://spruceid.dev/docs/didkit/
  - type: GitHubRepository
    url: https://github.com/spruceid/didkit-http
- aid: spruceid:spruceid-health-api
  name: SpruceID Health API
  description: Health check endpoints
  humanURL: https://spruceid.dev/docs/didkit/
  baseURL: https://localhost:8080
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/spruceid-health-api-openapi.yml
  - type: Documentation
    url: https://spruceid.dev/docs/didkit/
  - type: GitHubRepository
    url: https://github.com/spruceid/didkit-http
- aid: spruceid:spruceid-identifiers-api
  name: SpruceID Identifiers API
  description: DID resolution implementing the W3C DID Resolution HTTP binding.
  humanURL: https://spruceid.dev/docs/didkit/
  baseURL: https://localhost:8080
  tags:
  - Identifiers
  properties:
  - type: OpenAPI
    url: openapi/spruceid-identifiers-api-openapi.yml
  - type: Documentation
    url: https://spruceid.dev/docs/didkit/
  - type: GitHubRepository
    url: https://github.com/spruceid/didkit-http
- aid: spruceid:spruceid-presentations-api
  name: SpruceID Presentations API
  description: Issue and verify W3C Verifiable Presentations. Supports both legacy (/issue/presentations, /verify/presentations)
    and current (/presentations/issue, /presentations/verify) path styles.
  humanURL: https://spruceid.dev/docs/didkit/
  baseURL: https://localhost:8080
  tags:
  - Presentations
  properties:
  - type: OpenAPI
    url: openapi/spruceid-presentations-api-openapi.yml
  - type: Documentation
    url: https://spruceid.dev/docs/didkit/
  - type: GitHubRepository
    url: https://github.com/spruceid/didkit-http
- aid: spruceid:spruceid-status-api
  name: SpruceID Status API
  description: Bitstring Status List credential endpoint for credential revocation status.
  humanURL: https://spruceid.dev/docs/didkit/
  baseURL: https://localhost:8080
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/spruceid-status-api-openapi.yml
  - type: Documentation
    url: https://spruceid.dev/docs/didkit/
  - type: GitHubRepository
    url: https://github.com/spruceid/didkit-http
common:
- type: IssueTracker
  url: https://github.com/spruceid/siwe/issues
- type: Releases
  url: https://github.com/spruceid/siwe/releases
- type: License
  name: Apache-2.0
  url: https://github.com/spruceid/siwe/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/spruceid-agentic-access.yml
- type: DomainSecurity
  url: security/spruceid-domain-security.yml
- type: Website
  url: https://spruceid.com
- type: Developer
  url: https://www.sprucekit.dev/
- type: Blog
  url: https://blog.spruceid.com
- type: GitHub
  url: https://github.com/spruceid
- type: KnowledgeBase
  url: https://learn.spruceid.com
- type: PrivacyPolicy
  url: https://spruceid.com/privacy
- type: Contact
  url: https://spruceid.com/contact
- type: Discord
  url: https://discord.gg/spruceid
maintainers:
- FN: SpruceID
  email: hello@spruceid.com
  X-github: https://github.com/spruceid
  X-website: https://spruceid.com

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