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 16 more developer resources.

🌐 Visit website 📡 Source on GitHub

53.4/100 developing ▬ flat Agent 27/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemium

5 APIs

AuthenticationCloud NativeGraduatedIdentitySecurityZero Trust

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 53.4/100 · developing

Contract Quality 17.3 / 25

Developer Ergonomics 5.2 / 20

Commercial Clarity 7.9 / 20

Operational Transparency 8.2 / 13

Governance 7.5 / 12

Discoverability 7.2 / 10

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

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 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 0 / 4

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/spire: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

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 2

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

SPIRE Health Check API

OPEN COLLECTION

SPIRE OIDC Discovery Provider API

OPEN COLLECTION

GraphQL 1

GraphQL schemas published by this provider.

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.

JSON Schema 2

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

Examples 4

Example request and response payloads for these APIs.

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

JSONSchema

JSONSchema

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 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Security

Security

Operate 4

Status, limits, changes, and where to get help

Community

Slack

ChangeLog

StackOverflow

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Capabilities

Capabilities

Source (apis.yml)

aid: spire
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
created: '2025'
modified: '2026-05-19'
specificationVersion: '0.19'
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: 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: Capabilities
  url: capabilities/workload-identity.yaml
- type: Vocabulary
  url: vocabulary/spire-vocabulary.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com