Inth

Inth is a San Francisco, Y Combinator-backed company building enterprise privacy governance for teams that ship fast, making consent programmable, observable, and compliant by default. Its foundation is c15t (github.com/c15t), an open-source, developer-first consent management platform with 3M+ npm downloads used by teams like Zed, Expo, Infisical, and Unkey. c15t provides a headless, composable cookie banner, consent manager, and preference center for JavaScript, React, and Next.js, plus a self-hostable consent backend and REST API (@c15t/backend) that also runs as the inth.com managed service. It supports GDPR, CCPA, LGPD, IAB TCF 2.3, Google Consent Mode v2, and Global Privacy Control, with regional policy packs, audit-ready consent records, script and iframe gating, and first-party SDKs and CLI.

Inth publishes 2 API contracts indexed on the APIs.io network: Documentation API and Operations API. Tagged areas include Company, Consent Management, Privacy, Cookie Consent, and GDPR.

The Inth catalog on APIs.io includes 1 Spectral governance ruleset.

Inth’s developer surface includes documentation, API reference, quickstart, pricing, engineering blog, signup flow, support, and 27 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

60.4/100 strong ▬ flat Agent 29/100 agent ready Heartbeat 100/100 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 1 Agent Skills

Company Consent Management Privacy Cookie Consent GDPR CCPA Compliance Consent Developer Tools Open Source A2A

What this lets a business do 1

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

Compliance Management

BC-130

ConsentSubjects

Kin Score

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

Composite quality — 60.4/100 · strong

Contract Quality 9.2 / 19

Developer Ergonomics 12.9 / 15

Access Clarity 10.7 / 15

Operational Transparency 4.1 / 10

Contract Governance 2.9 / 9

Discoverability 5.5 / 8

Regulatory Posture 3.2 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 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 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 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 0 / 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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
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)

8 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 48.8 — up to +12.8 composite points
Contract Governance scores 31.8 — up to +8.2 composite points
Operational Transparency scores 42.1 — up to +7.5 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/inth/apis.yml: open an issue on github.com/api-evangelist/inth 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 →

Standards implemented 3

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.

Agent2Agent

measured — observed by APIs.io (flavored)

Agent Skills

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

Inth Documentation API

Search the public c15t documentation corpus.

Inth Operations API

Check whether the c15t documentation application is available.

Open Collections 5

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

c15t Backend Consent API

OPEN COLLECTION

c15t Backend Consent Init API

OPEN COLLECTION

c15t Backend Consent Legal Documents API

OPEN COLLECTION

c15t Backend Consent Status API

OPEN COLLECTION

c15t Backend Consent Subjects API

OPEN COLLECTION

Agent Skills 1

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

c15t

AGENT SKILL

Inth API pricing

Prices published by Inth, read 2026-10-28 from inth.com/pricing.

Plan	Price
Free	$0/ mo Includes: 500 consent sessions a month; 100 AI Credits to start; 1 project; 24 hours of analytics history
Starter	$36/ mo Includes: 5,000 consent sessions a month; 100 AI Credits a month; scheduled website audits; continuous code au
Pro	$124/ mo Includes: 50,000 consent sessions a month; 500 AI Credits a month; unlimited projects; 30 days analytics histo
Business	$624/ mo Includes: 250,000 consent sessions a month; 2,500 AI Credits a month; 90 days analytics history
Starter (yearly)	$348 ($29/mo) Includes: 1,200 AI Credits up front
Pro (yearly)	$1,188 ($99/mo) Includes: 6,000 AI Credits up front
Business (yearly)	$5,988 ($499/mo) Includes: 30,000 AI Credits up front
Enterprise	Contact sales Includes: Unlimited projects, SSO, third-party website audits, strict zero data retention

All 10 plans, limits and sources →

Billed by: ai credit · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Inth Plans Pricing

10 plans

PLANS

Inth Price Estimates

0 plans

PLANS

Service Levels 1

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

Inth

SLA

FinOps 1

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

Inth Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Inth API Rules

52 rules · 50 errors 1 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.

Inth C15T Consent Api Overlay

4 actions · update · inth-c15t-consent-api.yml

DERIVED

Security Posture 2

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

Inth Authentication

1 scheme

SECURITY

Inth Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

Quickstart

SignUp

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

LLMsTxt

AgentSkill

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Lifecycle

Components

Conventions

ErrorCatalog

Conformance

DataModel

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Compliance

Compliance

Operate 5

Status, limits, changes, and where to get help

Support

ChangeLog

StatusPage

Deprecation

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

Company 1

The organization behind the API

Blog

Blog

Other 3

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

AgentCard

AgentCard

Source (apis.yml)

aid: inth
name: Inth
description: Inth is a San Francisco, Y Combinator-backed company building enterprise privacy governance for teams that ship
  fast, making consent programmable, observable, and compliant by default. Its foundation is c15t (github.com/c15t), an open-source,
  developer-first consent management platform with 3M+ npm downloads used by teams like Zed, Expo, Infisical, and Unkey. c15t
  provides a headless, composable cookie banner, consent manager, and preference center for JavaScript, React, and Next.js,
  plus a self-hostable consent backend and REST API (@c15t/backend) that also runs as the inth.com managed service. It supports
  GDPR, CCPA, LGPD, IAB TCF 2.3, Google Consent Mode v2, and Global Privacy Control, with regional policy packs, audit-ready
  consent records, script and iframe gating, and first-party SDKs and CLI.
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: high
  source:
  - plans
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://inth.com/opengraph-image.png
url: https://raw.githubusercontent.com/api-evangelist/inth/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- y-combinator
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Consent Management
- Privacy
- Cookie Consent
- GDPR
- CCPA
- Compliance
- Consent
- Developer Tools
- Open Source
- A2A
tags_raw:
- Company
- Consent Management
- Privacy
- Cookie Consent
- GDPR
- CCPA
- Compliance
- Consent
- Developer Tools
- Open Source
- Open-Source
- A2A
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/inth-plans-pricing.yml
- type: CapabilityMap
  url: capabilities/inth-capability-edges.yml
  name: Inth Business Capability Map
- type: Overlay
  url: overlays/inth-c15t-consent-api-overlay.yaml
- type: AgentCard
  url: a2a/inth-a2a.yml
  name: A2A Agent Card
  description: Agent Card served at /.well-known/agent-card.json (flavored against A2A 1.0.0).
- type: DomainSecurity
  url: security/inth-domain-security.yml
- type: DeveloperPortal
  url: https://c15t.com/docs
- type: Documentation
  url: https://c15t.com/docs
- type: APIReference
  url: https://c15t.com/docs/self-host
- type: Quickstart
  url: https://c15t.com/docs/frameworks/react/quickstart
- type: GitHubOrganization
  url: https://github.com/c15t
- type: Pricing
  url: https://inth.com/pricing
- type: Blog
  url: https://inth.com/blog
- type: SignUp
  url: https://inth.com/dashboard/sign-up
- type: Support
  url: https://github.com/c15t/c15t/issues
- type: ChangeLog
  url: https://c15t.com/changelog
- type: StatusPage
  url: https://status.inth.com
- type: Deprecation
  url: lifecycle/inth-lifecycle.yml
- type: Lifecycle
  url: lifecycle/inth-lifecycle.yml
- type: Packages
  url: packages/inth-packages.yml
- type: SDKs
  url: packages/inth-packages.yml
- type: CLI
  url: cli/inth-cli.yml
- type: Components
  url: components/inth-components.yml
- type: Conventions
  url: conventions/inth-conventions.yml
- type: Authentication
  url: authentication/inth-authentication.yml
- type: ErrorCatalog
  url: errors/inth-problem-types.yml
- type: Conformance
  url: conformance/inth-conformance.yml
- type: Compliance
  url: conformance/inth-conformance.yml
- type: DataModel
  url: data-model/inth-data-model.yml
- type: ChangeLog
  url: changelog/inth-changelog.yml
- type: X-MCPServerCandidate
  url: mcp/inth-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: LLMsTxt
  url: llms/inth-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: WellKnown
  url: well-known/inth-well-known.yml
- type: Sandbox
  url: sandbox/inth-sandbox.yml
apis:
- aid: inth:inth-documentation-api
  name: Inth Documentation API
  description: Search the public c15t documentation corpus.
  humanURL: https://c15t.com/docs/self-host
  baseURL: https://your-instance.c15t.dev
  tags:
  - Documentation
  properties:
  - type: OpenAPI
    url: openapi/inth-documentation-api-openapi.yml
- aid: inth:inth-operations-api
  name: Inth Operations API
  description: Check whether the c15t documentation application is available.
  humanURL: https://c15t.com/docs/self-host
  baseURL: https://your-instance.c15t.dev
  tags: []
  tags_raw:
  - Operations
  properties:
  - type: OpenAPI
    url: openapi/inth-operations-api-openapi.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Inth API — frequently asked questions

Does Inth have an API?

Yes. APIs.io lists 2 APIs from Inth, including Inth Documentation API and Inth Operations API.

Is there an OpenAPI specification for the Inth API?

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

How do I authenticate with the Inth API?

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

How much does the Inth API cost?

Inth publishes its prices; its Free plan is $0/ mo as of 2026-10-28. APIs.io lists 10 pricing plans for Inth, with each plan's price, limits and inclusions under Pricing on this page.

Is the Inth API ready for AI agents?

Inth has a Kin Score of 60.4 out of 100 (strong) and an Agent Readiness score of 29.3 (agent-ready), scored by API Evangelist on 2026-11-06.

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