Stacklok

Stacklok is an open-source company building trust and governance infrastructure for AI agents and the Model Context Protocol (MCP). Its flagship open-source project, ToolHive (Apache 2.0), runs, secures, and governs MCP servers and agent skills across desktop, CLI, and Kubernetes, while the Stacklok Enterprise Platform and AI Gateway add centralized policy (Cedar/RBAC), OIDC authorization, LLM spend control, and a governed registry. Stacklok exposes two OpenAPI 3.1 surfaces — the ToolHive control API (thv serve, /api/v1beta) and the ToolHive Registry Server API (MCP Registry API v0.1 plus a /v1 admin API) — plus the thv CLI. Founded by Craig McLuckie and Luke Hinds; backed by Accel and Bain Capital Ventures.

Stacklok publishes 13 APIs on the APIs.io network, including ToolHive Registry API, clients API, discovery API, and 10 more. Tagged areas include Company, Open Source, MCP, AI Agents, and API Governance.

Stacklok’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, CLI, authentication, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

43.5/100 thin ▬ flat Agent 65/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessSelf serve

13 APIs 1 MCP Servers

CompanyOpen SourceMCPAI AgentsAPI GovernanceSecurityModel Context ProtocolDeveloper Tools

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 43.5/100 · thin

Contract Quality 12.6 / 25

Developer Ergonomics 16.1 / 20

Commercial Clarity 2.1 / 20

Operational Transparency 2.7 / 13

Governance 0.0 / 12

Discoverability 10.0 / 10

Agent readiness — 65/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 15 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

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/stacklok: 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 13

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

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

LLMsTxt

AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

SourceCode

Packages

SDKs

CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Commercial 1

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: stacklok
name: Stacklok
description: Stacklok is an open-source company building trust and governance infrastructure for AI agents and the Model Context
  Protocol (MCP). Its flagship open-source project, ToolHive (Apache 2.0), runs, secures, and governs MCP servers and agent
  skills across desktop, CLI, and Kubernetes, while the Stacklok Enterprise Platform and AI Gateway add centralized policy
  (Cedar/RBAC), OIDC authorization, LLM spend control, and a governed registry. Stacklok exposes two OpenAPI 3.1 surfaces
  — the ToolHive control API (thv serve, /api/v1beta) and the ToolHive Registry Server API (MCP Registry API v0.1 plus a /v1
  admin API) — plus the thv CLI. Founded by Craig McLuckie and Luke Hinds; backed by Accel and Bain Capital Ventures.
url: https://raw.githubusercontent.com/api-evangelist/stacklok/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- accel
- bain-capital-ventures
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
image: https://github.com/stacklok.png
tags:
- Company
- Open Source
- MCP
- AI Agents
- API Governance
- Security
- Model Context Protocol
- Developer Tools
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: ToolHive Registry API
  description: The ToolHive Registry Server API for discovering, governing, and controlling access to MCP servers and agent
    skills — MCP Registry API v0.1 (read) plus a /v1 admin API. OpenAPI 3.1.
  humanURL: https://github.com/stacklok/toolhive-registry-server
  baseURL: https://github.com/stacklok/toolhive-registry-server
  properties:
  - type: OpenAPI
    url: openapi/stacklok-registry-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/platform
  - type: Overlay
    url: overlays/stacklok-registry-overlay.yaml
- aid: stacklok:stacklok-clients-api
  name: Stacklok clients API
  description: The clients API from Stacklok — 5 operation(s) for clients.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - clients
  properties:
  - type: OpenAPI
    url: openapi/stacklok-clients-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-discovery-api
  name: Stacklok discovery API
  description: The discovery API from Stacklok — 1 operation(s) for discovery.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - discovery
  properties:
  - type: OpenAPI
    url: openapi/stacklok-discovery-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-groups-api
  name: Stacklok groups API
  description: The groups API from Stacklok — 2 operation(s) for groups.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - groups
  properties:
  - type: OpenAPI
    url: openapi/stacklok-groups-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-logs-api
  name: Stacklok logs API
  description: The logs API from Stacklok — 2 operation(s) for logs.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - logs
  properties:
  - type: OpenAPI
    url: openapi/stacklok-logs-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-registry-servers-api
  name: Stacklok registry-servers API
  description: The registry-servers API from Stacklok — 2 operation(s) for registry-servers.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - registry-servers
  properties:
  - type: OpenAPI
    url: openapi/stacklok-registry-servers-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-registry-skills-api
  name: Stacklok registry-skills API
  description: The registry-skills API from Stacklok — 2 operation(s) for registry-skills.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - registry-skills
  properties:
  - type: OpenAPI
    url: openapi/stacklok-registry-skills-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-secrets-api
  name: Stacklok secrets API
  description: The secrets API from Stacklok — 4 operation(s) for secrets.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - secrets
  properties:
  - type: OpenAPI
    url: openapi/stacklok-secrets-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-skills-api
  name: Stacklok skills API
  description: The skills API from Stacklok — 12 operation(s) for skills.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - skills
  properties:
  - type: OpenAPI
    url: openapi/stacklok-skills-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-system-api
  name: Stacklok system API
  description: The system API from Stacklok — 3 operation(s) for system.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - system
  properties:
  - type: OpenAPI
    url: openapi/stacklok-system-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-v1-api
  name: Stacklok v1 API
  description: The v1 API from Stacklok — 10 operation(s) for v1.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - v1
  properties:
  - type: OpenAPI
    url: openapi/stacklok-v1-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-version-api
  name: Stacklok version API
  description: The version API from Stacklok — 1 operation(s) for version.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - version
  properties:
  - type: OpenAPI
    url: openapi/stacklok-version-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
- aid: stacklok:stacklok-workloads-api
  name: Stacklok workloads API
  description: The workloads API from Stacklok — 13 operation(s) for workloads.
  humanURL: https://docs.stacklok.com/toolhive/reference/api
  baseURL: https://docs.stacklok.com/toolhive/reference/api
  tags:
  - workloads
  properties:
  - type: OpenAPI
    url: openapi/stacklok-workloads-api-openapi.yml
  - type: Documentation
    url: https://docs.stacklok.com/toolhive
common:
- type: Website
  url: https://www.stacklok.com/
- type: DeveloperPortal
  url: https://docs.stacklok.com
- type: Documentation
  url: https://docs.stacklok.com
- type: APIReference
  url: https://docs.stacklok.com/toolhive/reference/api
- type: GettingStarted
  url: https://docs.stacklok.com/toolhive/guides-cli/install
- type: GitHubOrganization
  url: https://github.com/stacklok
- type: SourceCode
  url: https://github.com/stacklok/toolhive
- type: Blog
  url: https://stacklok.com/blog/
- type: Support
  url: https://discord.gg/stacklok
- type: TermsOfService
  url: https://stacklok.com/platform-terms/
- type: Packages
  url: packages/stacklok-packages.yml
- type: SDKs
  url: packages/stacklok-packages.yml
- type: CLI
  url: cli/stacklok-cli.yml
- type: MCPServer
  url: mcp/stacklok-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/stacklok-llms.txt
- type: Authentication
  url: authentication/stacklok-authentication.yml
- type: Conventions
  url: conventions/stacklok-conventions.yml
- type: ErrorCatalog
  url: errors/stacklok-problem-types.yml
- type: Lifecycle
  url: lifecycle/stacklok-lifecycle.yml
- type: ChangeLog
  url: changelog/stacklok-changelog.yml
- type: Conformance
  url: conformance/stacklok-conformance.yml
- type: DataModel
  url: data-model/stacklok-data-model.yml
- type: AgenticAccess
  url: agentic-access/stacklok-agentic-access.yml
- type: DomainSecurity
  url: security/stacklok-domain-security.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  pass: local-v1
  artifacts_added: 20

Stacklok

Kin Score

APIs 13

ToolHive Registry API

Stacklok clients API

Stacklok discovery API

Stacklok groups API

Stacklok logs API

Stacklok registry-servers API

Stacklok registry-skills API

Stacklok secrets API

Stacklok skills API

Stacklok system API

Stacklok v1 API

Stacklok version API

Stacklok workloads API

MCP Servers 1

stacklok-mcp.yml

Security Posture 2

Stacklok Authentication

Stacklok Domain Security

Agentic Access 1

Stacklok Agentic Access