SPIRE

SPIRE (SPIFFE Runtime Environment) is the reference implementation of the SPIFFE standard, providing a toolchain for establishing trust between software systems across a wide variety of hosting platforms through automated attestation and workload identity distribution. SPIRE manages a certificate authority, performs node and workload attestation, and issues SVIDs to workloads through the SPIFFE Workload API.

SPIRE publishes 4 APIs on the APIs.io network, including Workload API, Discovery API, Health API, and 1 more. Tagged areas include Authentication, Cloud-Native, Graduated, Identity, and Security.

The SPIRE catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.

SPIRE’s developer surface includes documentation, getting-started guide, engineering blog, changelog, Stack Overflow tag, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

43.7/100 developing ▬ flat Agent 21/100 agent aware self hosted · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

2 APIs

Authentication Cloud-Native Graduated Identity Security Zero Trust

Kin Score

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

Composite quality — 43.7/100 · developing

Contract Quality 14.3 / 23

Developer Ergonomics 6.0 / 18

Access Clarity 0.0 / 18

Operational Transparency 4.3 / 12

Contract Governance 3.1 / 11

Discoverability 6.0 / 9

Open Source Surface 10.0 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

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 does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 90 points between them, because the conditional facet above carries the other 10. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 90% 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/spire: 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 5

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

SPIRE Workload API

The SPIRE Agent exposes the SPIFFE Workload API as a Unix domain socket, allowing workloads running on the same node to request their X.509-SVIDs and JWT-SVIDs without requiring...

SPIRE Server API

The SPIRE Server exposes a gRPC API used by administrators and the SPIRE Agent to manage registration entries, node attestation, bundle federation, and server health. It allows ...

SPIRE Discovery API

OpenID Connect discovery document endpoint that describes the OIDC provider configuration and supported capabilities.

SPIRE Health API

Liveness and readiness health check endpoints for SPIRE Server and SPIRE Agent components, suitable for use as Kubernetes probes.

SPIRE Keys API

JSON Web Key Set endpoint that exposes public keys used to verify JWT-SVIDs issued by SPIRE.

Open Collections 6

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

API Collection

OPEN COLLECTION

SPIRE Health Check Discovery API

OPEN COLLECTION

SPIRE Check Discovery Health API

OPEN COLLECTION

SPIRE Health Check API

OPEN COLLECTION

SPIRE Health Check Discovery Keys API

OPEN COLLECTION

SPIRE OIDC Discovery Provider API

OPEN COLLECTION

GraphQL 1

GraphQL schemas published by this provider.

SPIRE GraphQL API

Spire is a global maritime and aviation intelligence company using satellite data. The API covers vessel tracking (AIS), flight tracking (ADSB), weather intelligence, maritime t...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Spire Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Spire Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Spire Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

SPIRE Workload API Events

The SPIRE Workload API is a gRPC streaming interface exposed by the SPIRE Agent on each node, through which workloads request and receive SPIFFE Verifiable Identity Documents (S...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Spire Context

0 classes · 9 properties

JSON-LD

Spectral Rules 3

Spectral governance rulesets for linting and validating these APIs.

SPIRE API Rules

6 rules · 6 warnings

SPECTRAL

SPIRE API Rules

6 rules · 5 warnings 1 info

SPECTRAL

SPIRE API Rules

9 rules · 3 errors 5 warnings 1 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

SPIRE Registration Entries

0 properties

JSON SCHEMA

SPIRE SVID

5 properties

JSON SCHEMA

JSON Structure 2

JSON Structure definitions describing this provider's data shapes.

Spire Registration Structure

0 properties

JSON STRUCTURE

Spire Svid Structure

0 properties

JSON STRUCTURE

Examples 4

Example request and response payloads for these APIs.

Spire Get Jwks Example

2 fields

EXAMPLE

Spire Get Liveness Example

2 fields

EXAMPLE

Spire Get Openid Configuration Example

2 fields

EXAMPLE

Spire Get Readiness Example

2 fields

EXAMPLE

Security Posture 1

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

Spire Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

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

Spire Agentic Access

4 operations

4 operations · 0 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 4

Reference material describing how the API behaves

ContributionGuide

Documentation

JSONSchema

JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

JSONStructure

JSONStructure

JSONLD

SpectralRules

Vocabulary

Build 3

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Security

Security

Operate 6

Status, limits, changes, and where to get help

IssueTracker

Releases

Community

Slack

ChangeLog

StackOverflow

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: spire
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: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/spire.png
name: SPIRE
description: SPIRE (SPIFFE Runtime Environment) is the reference implementation of the SPIFFE standard, providing a toolchain
  for establishing trust between software systems across a wide variety of hosting platforms through automated attestation
  and workload identity distribution. SPIRE manages a certificate authority, performs node and workload attestation, and issues
  SVIDs to workloads through the SPIFFE Workload API.
url: https://spiffe.io/docs/latest/spire-about/
tags:
- Authentication
- Cloud-Native
- Graduated
- Identity
- Security
- Zero Trust
tags_raw:
- Authentication
- Cloud Native
- Graduated
- Identity
- Security
- Zero Trust
created: '2025'
modified: '2026-05-19'
specificationVersion: '0.23'
type: Index
apis:
- aid: spire:spire-workload-api
  name: SPIRE Workload API
  description: The SPIRE Agent exposes the SPIFFE Workload API as a Unix domain socket, allowing workloads running on the
    same node to request their X.509-SVIDs and JWT-SVIDs without requiring any credentials. The Workload API also delivers
    trust bundle updates so that workloads can verify the identity of other workloads.
  humanURL: https://spiffe.io/docs/latest/spire-about/spire-concepts/
  properties:
  - type: Documentation
    url: https://spiffe.io/docs/latest/spire-about/spire-concepts/
  - type: Reference
    url: https://github.com/spiffe/spiffe/blob/main/standards/SPIFFE_Workload_API.md
  - type: AsyncAPI
    url: asyncapi/spire-workload-asyncapi.yml
  - type: GitHubRepository
    url: https://github.com/spiffe/spire
  - url: graphql/spire-graphql.md
    type: GraphQL
  tags:
  - gRPC
  - Identity
  - JWT
  - Workload
  - X.509
- aid: spire:spire-server-api
  name: SPIRE Server API
  description: The SPIRE Server exposes a gRPC API used by administrators and the SPIRE Agent to manage registration entries,
    node attestation, bundle federation, and server health. It allows creating and managing workload registration entries
    that define the SPIFFE IDs issued to workloads matching specified selectors, and supports federation with external SPIFFE
    trust domains.
  humanURL: https://spiffe.io/docs/latest/deploying/spire_server/
  properties:
  - type: Documentation
    url: https://spiffe.io/docs/latest/deploying/spire_server/
  - type: Reference
    url: https://github.com/spiffe/spire-api-sdk
  - type: JSONSchema
    url: json-schema/spire-registration-schema.json
  - type: GitHubRepository
    url: https://github.com/spiffe/spire-api-sdk
  tags:
  - Administration
  - Attestation
  - gRPC
  - Registration
  - Server
- aid: spire:spire-discovery-api
  name: SPIRE Discovery API
  description: OpenID Connect discovery document endpoint that describes the OIDC provider configuration and supported capabilities.
  humanURL: https://spiffe.io/docs/latest/spire-about/spire-concepts/
  tags:
  - Discovery
  properties:
  - type: OpenAPI
    url: openapi/spire-discovery-api-openapi.yml
  - type: Documentation
    url: https://spiffe.io/docs/latest/deploying/spire_agent/
  - type: Reference
    url: https://spiffe.io/docs/latest/deploying/spire_agent/
  - type: GitHubRepository
    url: https://github.com/spiffe/spire
  - type: JSONStructure
    url: json-structure/spire-registration-structure.json
  - type: Documentation
    url: https://spiffe.io/docs/latest/keyless/oidc-federation-aws/
  - type: GitHubRepository
    url: https://github.com/spiffe/spire/tree/main/support/oidc-discovery-provider
  - type: JSONStructure
    url: json-structure/spire-svid-structure.json
- aid: spire:spire-health-api
  name: SPIRE Health API
  description: Liveness and readiness health check endpoints for SPIRE Server and SPIRE Agent components, suitable for use
    as Kubernetes probes.
  humanURL: https://spiffe.io/docs/latest/spire-about/spire-concepts/
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/spire-health-api-openapi.yml
  - type: Documentation
    url: https://spiffe.io/docs/latest/deploying/spire_agent/
  - type: Reference
    url: https://spiffe.io/docs/latest/deploying/spire_agent/
  - type: GitHubRepository
    url: https://github.com/spiffe/spire
  - type: JSONStructure
    url: json-structure/spire-registration-structure.json
  - type: Documentation
    url: https://spiffe.io/docs/latest/keyless/oidc-federation-aws/
  - type: GitHubRepository
    url: https://github.com/spiffe/spire/tree/main/support/oidc-discovery-provider
  - type: JSONStructure
    url: json-structure/spire-svid-structure.json
- aid: spire:spire-keys-api
  name: SPIRE Keys API
  description: JSON Web Key Set endpoint that exposes public keys used to verify JWT-SVIDs issued by SPIRE.
  humanURL: https://spiffe.io/docs/latest/spire-about/spire-concepts/
  tags:
  - Keys
  properties:
  - type: OpenAPI
    url: openapi/spire-keys-api-openapi.yml
  - type: Documentation
    url: https://spiffe.io/docs/latest/deploying/spire_agent/
  - type: Reference
    url: https://spiffe.io/docs/latest/deploying/spire_agent/
  - type: GitHubRepository
    url: https://github.com/spiffe/spire
  - type: JSONStructure
    url: json-structure/spire-registration-structure.json
  - type: Documentation
    url: https://spiffe.io/docs/latest/keyless/oidc-federation-aws/
  - type: GitHubRepository
    url: https://github.com/spiffe/spire/tree/main/support/oidc-discovery-provider
  - type: JSONStructure
    url: json-structure/spire-svid-structure.json
common:
- type: IssueTracker
  url: https://github.com/spiffe/spire/issues
- type: Releases
  url: https://github.com/spiffe/spire/releases
- type: CodeOfConduct
  url: https://github.com/spiffe/spire/blob/main/CODE-OF-CONDUCT.md
- type: ContributionGuide
  url: https://github.com/spiffe/spire/blob/main/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/spiffe/spire/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/spire-agentic-access.yml
- type: DomainSecurity
  url: security/spire-domain-security.yml
- type: Website
  url: https://spiffe.io/
- type: Documentation
  url: https://spiffe.io/docs/latest/
- type: GettingStarted
  url: https://spiffe.io/docs/latest/try/getting-started-k8s/
- type: GitHubOrganization
  url: https://github.com/spiffe
- type: GitHubRepository
  url: https://github.com/spiffe/spire
- type: Community
  url: https://spiffe.io/community/
- type: Slack
  url: https://slack.spiffe.io
- type: Blog
  url: https://spiffe.io/blog/
- type: ChangeLog
  url: https://github.com/spiffe/spire/blob/main/CHANGELOG.md
- type: Security
  url: https://github.com/spiffe/spire/blob/main/SECURITY.md
- type: StackOverflow
  url: https://stackoverflow.com/questions/tagged/spiffe
- type: JSONSchema
  url: json-schema/spire-svid-schema.json
- type: JSONSchema
  url: json-schema/spire-registration-schema.json
- type: JSONStructure
  url: json-structure/spire-svid-structure.json
- type: JSONStructure
  url: json-structure/spire-registration-structure.json
- type: JSONLD
  url: json-ld/spire-context.jsonld
- type: SpectralRules
  url: rules/spire-rules.yml
- type: Vocabulary
  url: vocabulary/spire-vocabulary.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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