Trunk

Trunk builds developer experience and CI reliability tooling. Its platform spans Code Quality (a meta-linter and static analysis manager driven by the trunk CLI), a flake-aware parallel Merge Queue, and Flaky Tests detection / CI Analytics. Test results are uploaded from CI via the Trunk Analytics CLI / GitHub Action, and an HTTP REST API at api.trunk.io exposes Flaky Tests and Merge Queue control plus Svix-powered outbound webhooks. Trunk is a portfolio company of a16z.

Trunk publishes 5 API contracts indexed on the APIs.io network, including Flaky Tests API, Merge Queue API, and 3 more. Tagged areas include Developer Tools, CI/CD, Code Quality, Flaky Tests, and Merge Queue.

The Trunk catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Trunk’s developer surface includes documentation, engineering blog, authentication, CLI, and 21 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

39.4/100 developing ▬ flat Agent 30/100 agent ready Front door AI 3/6 light Heartbeat 70/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 2 Agent Skills

Developer Tools CI/CD Code QualityFlaky TestsMerge QueueTest AnalyticsStatic Analysis Webhook

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Software Product Engineering Management

BC-4200

Flaky Tests

Software Release & Deployment Management

BC-4210

Merge Queue

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 39.4/100 · developing

Contract Quality 10.9 / 19

Developer Ergonomics 7.8 / 15

Access Clarity 1.2 / 15

Operational Transparency 2.8 / 10

Contract Governance 1.6 / 9

Discoverability 5.0 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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.

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 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Protected Resource Metadata +5 pts — a served /.well-known/oauth-protected-resource carrying `resource` (documented), and naming its authorization_servers (verified)

4 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 7.9 — up to +18.4 composite points
Contract Quality scores 58.1 — up to +10.5 composite points
Contract Governance scores 18.2 — up to +9.8 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/trunk/apis.yml: open an issue on github.com/api-evangelist/trunk to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Browser Extension Stores (company-published Firefox add-ons; Chrome Web Store unreadable)	builds-on	54.9	1	-
OpenSSF Best Practices Badge Holders	builds-on	54.9	1	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 5

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

Trunk Test Uploads (Analytics CLI)

CI test-result ingestion surface. The trunk-analytics-cli (and the trunk-io/analytics-uploader GitHub Action) uploads JUnit XML, Bazel BEP, and XCResult test reports to Trunk fo...

Trunk Webhooks

Svix-powered outbound webhooks for subscribing to Flaky Tests events (test_case.status_changed, test_case.monitor_status_changed, test_case.investigation_completed) and Merge Qu...

Trunk Code Quality CLI

Meta-linter and static analysis manager exposed through the trunk CLI and a local daemon (no public REST API). Commands include trunk init, trunk check, and trunk check --all; i...

Trunk Flaky Tests API

Query Flaky Tests state and link tickets.

Trunk Merge Queue API

Control the Trunk Merge Queue.

Open Collections 3

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

Trunk Flaky Tests API

OPEN COLLECTION

Trunk API

OPEN COLLECTION

Trunk Flaky Tests Merge Queue API

OPEN COLLECTION

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

Control the merge queue

AGENT SKILL

Triage flaky tests

AGENT SKILL

Trunk API pricing

Not yet checked against Trunk's own pricing page. Compiled by API Evangelist on 2026-06-20 from trunk.io/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free free	Free
Team usage	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

REST API Requests: see provider documentation requests
List Endpoint Page Size: 100 rows
Test Result Uploads: see provider documentation uploads

Compiled by API Evangelist, not yet checked against Trunk's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Trunk Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Trunk Rate Limits

3 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Trunk

SLA

FinOps 1

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

Trunk Finops

FINOPS

Event Specifications 1

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

Trunk Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Trunk API Rules

60 rules · 57 errors 2 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Trunk Openapi Overlay

2 actions · update · trunk-openapi.yml

DERIVED

Security Posture 3

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

Trunk Authentication

apiKey · 1 scheme

SECURITY

Trunk Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Trunk Vulnerability Disclosure

no policy recorded

SECURITY

Agentic Access 1

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

Trunk Agentic Access

16 operations · 8 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

Conventions

DataModel

Conformance

Lifecycle

Webhooks

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

CLI

CLI

Access & Security 4

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: trunk
name: Trunk
description: Trunk builds developer experience and CI reliability tooling. Its platform spans Code Quality (a meta-linter
  and static analysis manager driven by the trunk CLI), a flake-aware parallel Merge Queue, and Flaky Tests detection / CI
  Analytics. Test results are uploaded from CI via the Trunk Analytics CLI / GitHub Action, and an HTTP REST API at api.trunk.io
  exposes Flaky Tests and Merge Queue control plus Svix-powered outbound webhooks. Trunk is a portfolio company of a16z.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/trunk.png
url: https://raw.githubusercontent.com/api-evangelist/trunk/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
x-canonical: trunk-io
x-canonical-note: This record duplicates the canonical, more fully enriched provider at all/trunk-io (same company, Trunk.io).
  Candidate for dedupe.
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-08'
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-17
tags:
- Developer Tools
- CI/CD
- Code Quality
- Flaky Tests
- Merge Queue
- Test Analytics
- Static Analysis
- Webhook
tags_raw:
- Developer Tools
- CI/CD
- Code Quality
- Flaky Tests
- Merge Queue
- Test Analytics
- Static Analysis
- Webhooks
apis:
- aid: trunk:test-uploads-api
  name: Trunk Test Uploads (Analytics CLI)
  tags:
  - Test Uploads
  - CI Integration
  - JUnit
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.trunk.io/flaky-tests/uploader
  baseURL: https://api.trunk.io
  description: CI test-result ingestion surface. The trunk-analytics-cli (and the trunk-io/analytics-uploader GitHub Action)
    uploads JUnit XML, Bazel BEP, and XCResult test reports to Trunk for flaky-test detection, authenticated with an organization
    slug (--org-url-slug) and API token (--token / TRUNK_API_TOKEN).
  properties:
  - url: https://docs.trunk.io/flaky-tests/uploader
    type: Documentation
  - url: https://docs.trunk.io/flaky-tests/get-started/ci-providers/github-actions
    type: GettingStarted
- aid: trunk:webhooks-api
  name: Trunk Webhooks
  tags:
  - Webhook
  - Event
  - Svix
  tags_raw:
  - Webhooks
  - Events
  - Svix
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.trunk.io/flaky-tests/webhooks
  baseURL: https://api.trunk.io
  description: Svix-powered outbound webhooks for subscribing to Flaky Tests events (test_case.status_changed, test_case.monitor_status_changed,
    test_case.investigation_completed) and Merge Queue events (pull_request.* and pull_request_batch.*). Used to trigger downstream
    workflows like GitHub Issues.
  properties:
  - url: https://docs.trunk.io/flaky-tests/webhooks
    type: Documentation
  - url: asyncapi/trunk-webhooks.yml
    type: Webhooks
- aid: trunk:code-quality-cli
  name: Trunk Code Quality CLI
  tags:
  - Code Quality
  - Meta-Linter
  - Static Analysis
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.trunk.io/code-quality
  baseURL: https://docs.trunk.io/code-quality
  description: Meta-linter and static analysis manager exposed through the trunk CLI and a local daemon (no public REST API).
    Commands include trunk init, trunk check, and trunk check --all; it hermetically installs and runs third-party linters,
    formatters, and security scanners, operating in Hold The Line mode by default and serving real-time annotations to IDE
    extensions.
  properties:
  - url: https://docs.trunk.io/code-quality
    type: Documentation
  - url: https://docs.trunk.io/cli
    type: Documentation
- aid: trunk:trunk-flaky-tests-api
  name: Trunk Flaky Tests API
  description: Query Flaky Tests state and link tickets.
  humanURL: https://docs.trunk.io/flaky-tests/reference/api-reference
  baseURL: https://api.trunk.io/v1
  tags:
  - Flaky Tests
  properties:
  - type: OpenAPI
    url: openapi/trunk-flaky-tests-api-openapi.yml
  - type: Documentation
    url: https://docs.trunk.io/flaky-tests/flaky-tests
  - type: APIReference
    url: https://docs.trunk.io/flaky-tests/reference/api-reference
  - type: Documentation
    url: https://docs.trunk.io/merge-queue
  - type: APIReference
    url: https://docs.trunk.io/merge-queue/reference/merge
- aid: trunk:trunk-merge-queue-api
  name: Trunk Merge Queue API
  description: Control the Trunk Merge Queue.
  humanURL: https://docs.trunk.io/flaky-tests/reference/api-reference
  baseURL: https://api.trunk.io/v1
  tags:
  - Merge Queue
  properties:
  - type: OpenAPI
    url: openapi/trunk-merge-queue-api-openapi.yml
  - type: Documentation
    url: https://docs.trunk.io/flaky-tests/flaky-tests
  - type: APIReference
    url: https://docs.trunk.io/flaky-tests/reference/api-reference
  - type: Documentation
    url: https://docs.trunk.io/merge-queue
  - type: APIReference
    url: https://docs.trunk.io/merge-queue/reference/merge
common:
- type: CapabilityMap
  url: capabilities/trunk-capability-edges.yml
  name: Trunk Business Capability Map
- type: Website
  url: https://trunk.io/
- type: Documentation
  url: https://docs.trunk.io
- type: GitHubOrganization
  url: https://github.com/trunk-io
- type: LinkedIn
  url: https://www.linkedin.com/company/trunkhq
- type: Blog
  url: https://trunk.io/feed.xml
- type: TermsOfService
  url: https://trunk.io/legal/terms
- type: Authentication
  url: authentication/trunk-authentication.yml
- type: AgenticAccess
  url: agentic-access/trunk-agentic-access.yml
- type: X-MCPServerCandidate
  url: mcp/trunk-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: ErrorCatalog
  url: errors/trunk-problem-types.yml
- type: Conventions
  url: conventions/trunk-conventions.yml
- type: DataModel
  url: data-model/trunk-data-model.yml
- type: Conformance
  url: conformance/trunk-conformance.yml
- type: Lifecycle
  url: lifecycle/trunk-lifecycle.yml
- type: CLI
  url: cli/trunk-cli.yml
- type: Webhooks
  url: asyncapi/trunk-webhooks.yml
- type: Overlay
  url: overlays/trunk-openapi-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: DomainSecurity
  url: security/trunk-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/trunk-vulnerability-disclosure.yml
- type: Security
  url: https://trunk.io/security
- type: Plans
  url: plans/trunk-plans-pricing.yml
- type: RateLimits
  url: rate-limits/trunk-rate-limits.yml
- type: FinOps
  url: finops/trunk-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 15
  pass: local-v1
x-merged-from:
- trunk-io

Trunk API — frequently asked questions

Does Trunk have an API?

Yes. APIs.io lists 5 APIs from Trunk, including Trunk Test Uploads (Analytics CLI), Trunk Webhooks and Trunk Code Quality CLI, and 2 more.

Is there an OpenAPI specification for the Trunk API?

Yes. APIs.io indexes 2 OpenAPI specifications for Trunk, each linked for download from this page.

How do I authenticate with the Trunk API?

Trunk uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Trunk Authentication.

How much does the Trunk API cost?

APIs.io lists 3 pricing plans for Trunk, with each plan's price, limits and inclusions under Pricing on this page.

Is the Trunk API ready for AI agents?

Trunk has a Kin Score of 39.4 out of 100 (developing) and an Agent Readiness score of 29.6 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

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