Temporal

Temporal is a durable execution platform for orchestrating long-running, fault-tolerant workflows. Its primary API surface is gRPC - the WorkflowService, OperatorService, and (on Temporal Cloud) the Cloud Operations API are defined as protobuf in github.com/temporalio/api and github.com/temporalio/cloud-api. Temporal also ships a first-party HTTP API: a grpc-gateway that maps a REST/JSON subset of the WorkflowService onto paths under /api/v1, for automation and environments where gRPC is impractical. Temporal is open source (MIT) and self-hostable, and is also available as the managed Temporal Cloud.

Temporal publishes 5 APIs on the APIs.io network, including Cluster API, Namespaces API, Workflow Lifecycle API, and 2 more. Tagged areas include Durable Execution, Workflow Orchestration, gRPC, Workflows, and Open Source.

Temporal’s developer surface includes authentication, documentation, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub
41.3/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
8 APIs
Durable ExecutionWorkflow OrchestrationgRPCWorkflowsOpen SourceTemporal Cloud

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 41.3/100 · thin
Contract Quality 15.3 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 9.5 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 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
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/temporal-io: 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 8

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

Temporal Operator Service API

The gRPC OperatorService for cluster-level administration - managing custom search attributes (add/remove/list), Nexus endpoints (create/get/update/ delete/list), remote cluster...

Temporal Cloud Operations API

The Temporal Cloud control-plane API (CloudService) for programmatically managing Temporal Cloud resources - namespaces, users, service accounts, API keys, regions, account sett...

Temporal Nexus API

Temporal Nexus connects Temporal applications across namespaces and teams via named Nexus endpoints backed by synchronous and asynchronous Nexus operations. Endpoints are regist...

Temporal Cluster API

Cluster and system information.

Temporal Namespaces API

Read namespace metadata (read-only subset over HTTP).

Temporal Workflow Lifecycle API

Cancel, terminate, and reset workflow executions.

Temporal Workflow Messaging API

Signal, query, and update running workflow executions.

Temporal Workflows API

Start, describe, list, count, and read the history of workflow executions.

Scroll for all 8

Open Collections 1

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

Temporal HTTP API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Temporal Io Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Temporal Io Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Temporal Io Finops

FINOPS

Security Posture 4

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

Temporal Io Authentication

http · 1 scheme

SECURITY

Temporal Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Temporal Io Vulnerability Disclosure

security.txt · contact published

SECURITY

Temporal Io Trust Center

SOC 2, ISO 27001, ISO 27017, ISO 27018, HIPAA, FedRAMP, GDPR

SECURITY

Agentic Access 1

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

Temporal Io Agentic Access

17 operations · 7 acting · 2 human-in-the-loop

17 operations · 7 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: temporal-io
url: https://raw.githubusercontent.com/api-evangelist/temporal-io/refs/heads/main/apis.yml
name: Temporal
kind: company
description: 'Temporal is a durable execution platform for orchestrating long-running, fault-tolerant workflows. Its primary
  API surface is gRPC - the WorkflowService, OperatorService, and (on Temporal Cloud) the Cloud Operations API are defined
  as protobuf in github.com/temporalio/api and github.com/temporalio/cloud-api. Temporal also ships a first-party HTTP API:
  a grpc-gateway that maps a REST/JSON subset of the WorkflowService onto paths under /api/v1, for automation and environments
  where gRPC is impractical. Temporal is open source (MIT) and self-hostable, and is also available as the managed Temporal
  Cloud.'
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/temporal-io.png
tags:
- Durable Execution
- Workflow Orchestration
- gRPC
- Workflows
- Open Source
- Temporal Cloud
created: '2026-07-02'
modified: '2026-07-02'
specificationVersion: '0.19'
apis:
- aid: temporal-io:temporal-io-operator-service-api
  name: Temporal Operator Service API
  tags:
  - Operator
  - Namespaces
  - Search Attributes
  - Nexus
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.temporal.io/references/api-reference
  baseURL: https://docs.temporal.io/references/api-reference
  properties:
  - url: https://docs.temporal.io/references/api-reference
    type: Documentation
  - url: https://github.com/temporalio/api/blob/master/temporal/api/operatorservice/v1/service.proto
    type: SourceCode
  description: The gRPC OperatorService for cluster-level administration - managing custom search attributes (add/remove/list),
    Nexus endpoints (create/get/update/ delete/list), remote clusters, and namespace deletion. A handful of methods (ListSearchAttributes
    and the Nexus endpoint operations) also carry HTTP annotations; the rest are gRPC-only.
- aid: temporal-io:temporal-io-cloud-operations-api
  name: Temporal Cloud Operations API
  tags:
  - Temporal Cloud
  - Control Plane
  - Namespaces
  - Users
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.temporal.io/ops
  baseURL: https://saas-api.tmprl.cloud/api/v1
  properties:
  - url: https://docs.temporal.io/ops
    type: Documentation
  - url: https://github.com/temporalio/cloud-api
    type: SourceCode
  description: The Temporal Cloud control-plane API (CloudService) for programmatically managing Temporal Cloud resources
    - namespaces, users, service accounts, API keys, regions, account settings, Nexus endpoints, and usage. It is exposed
    both as gRPC (saas-api.tmprl.cloud:443, with a temporal-cloud-api-version header) and as an HTTP/REST grpc-gateway under
    https://saas-api.tmprl.cloud/api/v1 (public preview). Distinct from the per-namespace data-plane WorkflowService.
- aid: temporal-io:temporal-io-nexus-api
  name: Temporal Nexus API
  tags:
  - Nexus
  - Cross-Namespace
  - RPC
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.temporal.io/nexus
  baseURL: https://docs.temporal.io/nexus
  properties:
  - url: https://docs.temporal.io/nexus
    type: Documentation
  - url: https://github.com/temporalio/api/blob/master/temporal/api/nexus/v1/message.proto
    type: SourceCode
  description: Temporal Nexus connects Temporal applications across namespaces and teams via named Nexus endpoints backed
    by synchronous and asynchronous Nexus operations. Endpoints are registered through the OperatorService (Create/Get/ Update/Delete/ListNexusEndpoints)
    and workers serve them through the WorkflowService Nexus task-queue RPCs (PollNexusTaskQueue, RespondNexusTaskCompleted,
    RespondNexusTaskFailed). Transport is gRPC.
- aid: temporal-io:temporal-io-cluster-api
  name: Temporal Cluster API
  description: Cluster and system information.
  humanURL: https://docs.temporal.io/references/api-reference
  baseURL: https://docs.temporal.io/references/api-reference
  tags:
  - Cluster
  properties:
  - type: OpenAPI
    url: openapi/temporal-io-cluster-api-openapi.yml
  - type: Documentation
    url: https://docs.temporal.io/references/api-reference
  - type: SourceCode
    url: https://github.com/temporalio/api/blob/master/temporal/api/workflowservice/v1/service.proto
  - type: PostmanCollection
    url: collections/temporal-io.postman_collection.json
  - type: OpenCollection
    url: collections/temporal-io.opencollection.json
- aid: temporal-io:temporal-io-namespaces-api
  name: Temporal Namespaces API
  description: Read namespace metadata (read-only subset over HTTP).
  humanURL: https://docs.temporal.io/references/api-reference
  baseURL: https://docs.temporal.io/references/api-reference
  tags:
  - Namespaces
  properties:
  - type: OpenAPI
    url: openapi/temporal-io-namespaces-api-openapi.yml
  - type: Documentation
    url: https://docs.temporal.io/references/api-reference
  - type: SourceCode
    url: https://github.com/temporalio/api/blob/master/temporal/api/workflowservice/v1/service.proto
  - type: PostmanCollection
    url: collections/temporal-io.postman_collection.json
  - type: OpenCollection
    url: collections/temporal-io.opencollection.json
- aid: temporal-io:temporal-io-workflow-lifecycle-api
  name: Temporal Workflow Lifecycle API
  description: Cancel, terminate, and reset workflow executions.
  humanURL: https://docs.temporal.io/references/api-reference
  baseURL: https://docs.temporal.io/references/api-reference
  tags:
  - Workflow Lifecycle
  properties:
  - type: OpenAPI
    url: openapi/temporal-io-workflow-lifecycle-api-openapi.yml
  - type: Documentation
    url: https://docs.temporal.io/references/api-reference
  - type: SourceCode
    url: https://github.com/temporalio/api/blob/master/temporal/api/workflowservice/v1/service.proto
  - type: PostmanCollection
    url: collections/temporal-io.postman_collection.json
  - type: OpenCollection
    url: collections/temporal-io.opencollection.json
- aid: temporal-io:temporal-io-workflow-messaging-api
  name: Temporal Workflow Messaging API
  description: Signal, query, and update running workflow executions.
  humanURL: https://docs.temporal.io/references/api-reference
  baseURL: https://docs.temporal.io/references/api-reference
  tags:
  - Workflow Messaging
  properties:
  - type: OpenAPI
    url: openapi/temporal-io-workflow-messaging-api-openapi.yml
  - type: Documentation
    url: https://docs.temporal.io/references/api-reference
  - type: SourceCode
    url: https://github.com/temporalio/api/blob/master/temporal/api/workflowservice/v1/service.proto
  - type: PostmanCollection
    url: collections/temporal-io.postman_collection.json
  - type: OpenCollection
    url: collections/temporal-io.opencollection.json
- aid: temporal-io:temporal-io-workflows-api
  name: Temporal Workflows API
  description: Start, describe, list, count, and read the history of workflow executions.
  humanURL: https://docs.temporal.io/references/api-reference
  baseURL: https://docs.temporal.io/references/api-reference
  tags:
  - Workflows
  properties:
  - type: OpenAPI
    url: openapi/temporal-io-workflows-api-openapi.yml
  - type: Documentation
    url: https://docs.temporal.io/references/api-reference
  - type: SourceCode
    url: https://github.com/temporalio/api/blob/master/temporal/api/workflowservice/v1/service.proto
  - type: PostmanCollection
    url: collections/temporal-io.postman_collection.json
  - type: OpenCollection
    url: collections/temporal-io.opencollection.json
common:
- type: AgenticAccess
  url: agentic-access/temporal-io-agentic-access.yml
- type: TrustCenter
  url: security/temporal-io-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/temporal-io-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/temporal-io-domain-security.yml
- type: Authentication
  url: authentication/temporal-io-authentication.yml
- type: GitHubOrganization
  url: https://github.com/temporalio
- type: LinkedIn
  url: https://www.linkedin.com/company/temporal-technologies
- type: Website
  url: https://temporal.io/
- type: Documentation
  url: https://docs.temporal.io
- type: Plans
  url: plans/temporal-io-plans-pricing.yml
- type: RateLimits
  url: rate-limits/temporal-io-rate-limits.yml
- type: FinOps
  url: finops/temporal-io-finops.yml
- url: https://temporal.io/blog/feed.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com