Sapling

Sapling provides a language model API toolkit and copilot for enterprise tasks, offering APIs and SDKs for grammar and spell checking, autocomplete, AI detection, paraphrasing, sentiment analysis, and more. The platform enables developers to integrate real‑time writing assistance and AI‑powered content generation into their applications, with customizable models, self‑hosting options, and extensive documentation for enterprise use cases.

Sapling publishes 7 API contracts indexed on the APIs.io network, including Account API, Analysis API, Detection API, and 4 more. Tagged areas include AI, Language-Model, API, Enterprise, and Productivity.

The Sapling catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Sapling’s developer surface includes authentication, changelog, documentation, API reference, support, engineering blog, pricing, and 31 more developer resources.

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65.7/100 strong Agent 51/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 Agent Skills

AILanguage-ModelAPIEnterprise Productivity

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 65.7/100 · strong

Contract Quality 11.3 / 21

Developer Ergonomics 10.8 / 17

Access Clarity 13.9 / 17

Operational Transparency 7.6 / 11

Contract Governance 3.6 / 10

Discoverability 5.6 / 9

Regulatory Posture 6.3 / 15

Agent readiness — 51/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs

3 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 53.3 — up to +11.7 composite points
Contract Governance scores 35.6 — up to +7.7 composite points
Developer Ergonomics scores 63.6 — up to +7.3 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/sapling/apis.yml: open an issue on github.com/api-evangelist/sapling 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 →

APIs 7

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

Sapling Account API

API key status, usage and quota reporting.

Sapling Analysis API

Tone, sentiment, readability, quality, SEO, classification, extraction, style-guide compliance, and inclusive language.

Sapling Detection API

AI-content, language, PII, named-entity, and unsafe-content detection.

Sapling Files API

PDF/Word text extraction and text chunking.

Sapling Generation API

Text rewriting, summarization, translation, and completion.

Sapling Proofreading API

Grammar and spelling correction.

Sapling Service API

Health and version probes (no API key).

Scroll for all 7

Agent Skills 1

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

autocomplete

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Sapling Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sapling Rate Limits

2 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Sapling Context

1 classes · 1 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Sapling API Rules

18 rules · 15 errors 2 warnings 1 info

SPECTRAL

OpenAPI Overlays 2

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.

Api Sapling Openapi Overlay

0 actions · update

UNRECORDED

Sapling Openapi Overlay

0 actions · update

UNRECORDED

Security Posture 4

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

Sapling Authentication

2 schemes

SECURITY

Sapling Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Sapling Vulnerability Disclosure

no policy recorded

SECURITY

Sapling Trust Center

SOC 2, PCI DSS, HIPAA, GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Sapling Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Sapling Agentic Access

116 operations · 100 acting · 2 human-in-the-loop

116 operations · 100 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Components

ErrorCatalog

Conformance

Scroll for all 7

Build 4

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Postman

Postman

Access & Security 7

Authentication, authorization, and security posture

SecurityTxt

Compliance

Authentication

Security

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 7

Operate 4

Status, limits, changes, and where to get help

RateLimits

StatusPage

ChangeLog

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: sapling
name: Sapling
description: Sapling provides a language model API toolkit and copilot for enterprise tasks, offering APIs and SDKs for grammar
  and spell checking, autocomplete, AI detection, paraphrasing, sentiment analysis, and more. The platform enables developers
  to integrate real‑time writing assistance and AI‑powered content generation into their applications, with customizable models,
  self‑hosting options, and extensive documentation for enterprise use cases.
image: https://sapling.ai/static/img/sapling-logo-horizontal.png
url: https://artifacts.apis.io/sapling/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- AI
- Language-Model
- API
- Enterprise
- Productivity
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: SecurityTxt
  url: well-known/sapling-sapling-security.txt
- type: AgenticAccess
  url: agentic-access/sapling-agentic-access.yml
- type: RateLimits
  url: rate-limits/sapling-rate-limits.yml
- type: Plans
  url: plans/sapling-plans-pricing.yml
- type: Spectral
  url: rules/sapling-rules.yml
- type: JSONLD
  url: json-ld/sapling-context.jsonld
- type: Vocabulary
  url: vocabulary/sapling-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/sapling-data-model.yml
- type: Components
  url: components/sapling-components.yml
- type: Compliance
  url: https://sapling.ai/security
- type: Authentication
  url: authentication/sapling-authentication.yml
- type: ErrorCatalog
  url: errors/sapling-problem-types.yml
- type: Conformance
  url: conformance/sapling-conformance.yml
- type: LLMsTxt
  url: llms/sapling-llms.txt
- type: WellKnown
  url: well-known/sapling-well-known.yml
- type: Hosts
  url: hosts/sapling-hosts.yml
- type: Vendors
  url: vendors/sapling-vendors.yml
- type: Packages
  url: packages/sapling-packages.yml
- type: StatusPage
  url: https://sapling.statuspage.io
- type: Security
  url: https://sapling.ai/security
- type: SDKs
  url: https://sapling.ai/llm/libraries
- type: ChangeLog
  url: https://sapling.ai/security/changelog
- type: TrustCenter
  url: security/sapling-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/sapling-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/sapling-domain-security.yml
- type: Website
  url: https://sapling.ai/
- type: DeveloperPortal
  url: https://sapling.ai/docs/
- type: Documentation
  url: https://sapling.ai/docs/
- type: APIReference
  url: https://sapling.ai/docs/api/
- type: Support
  url: https://sapling.ai/docs/help/
- type: Blog
  url: https://sapling.ai/devblog/
- type: GitHubOrganization
  url: https://github.com/saplingai
- type: Pricing
  url: https://sapling.ai/pricing
- type: SignUp
  url: https://sapling.ai/user/register
- type: TermsOfService
  url: https://sapling.ai/tos
- type: PrivacyPolicy
  url: https://sapling.ai/privacy
- type: Postman
  url: https://app.getpostman.com/run-collection/20248607-4e2eafd4-e941-4d52-88a8-b4bb90c1d26a?action=collection%2Ffork&collection-url=entityId%3D20248607-4e2eafd4-e941-4d52-88a8-b4bb90c1d26a%26entityType%3Dcollection%26workspaceId%3Dcea8d224-5c5e-4604-a8f6-46f228f46f78
apis:
- aid: sapling:sapling-account-api
  name: Sapling Account API
  description: API key status, usage and quota reporting.
  humanURL: https://sapling.ai/docs/api/
  baseURL: https://api.sapling.ai
  tags:
  - account
  properties:
  - type: OpenAPI
    url: openapi/sapling-account-api-openapi.yml
- aid: sapling:sapling-analysis-api
  name: Sapling Analysis API
  description: Tone, sentiment, readability, quality, SEO, classification, extraction, style-guide compliance, and inclusive
    language.
  humanURL: https://sapling.ai/docs/api/
  baseURL: https://api.sapling.ai
  tags:
  - analysis
  properties:
  - type: OpenAPI
    url: openapi/sapling-analysis-api-openapi.yml
- aid: sapling:sapling-detection-api
  name: Sapling Detection API
  description: AI-content, language, PII, named-entity, and unsafe-content detection.
  humanURL: https://sapling.ai/docs/api/
  baseURL: https://api.sapling.ai
  tags:
  - detection
  properties:
  - type: OpenAPI
    url: openapi/sapling-detection-api-openapi.yml
- aid: sapling:sapling-files-api
  name: Sapling Files API
  description: PDF/Word text extraction and text chunking.
  humanURL: https://sapling.ai/docs/api/
  baseURL: https://api.sapling.ai
  tags:
  - files
  properties:
  - type: OpenAPI
    url: openapi/sapling-files-api-openapi.yml
- aid: sapling:sapling-generation-api
  name: Sapling Generation API
  description: Text rewriting, summarization, translation, and completion.
  humanURL: https://sapling.ai/docs/api/
  baseURL: https://api.sapling.ai
  tags:
  - generation
  properties:
  - type: OpenAPI
    url: openapi/sapling-generation-api-openapi.yml
- aid: sapling:sapling-proofreading-api
  name: Sapling Proofreading API
  description: Grammar and spelling correction.
  humanURL: https://sapling.ai/docs/api/
  baseURL: https://api.sapling.ai
  tags:
  - proofreading
  properties:
  - type: OpenAPI
    url: openapi/sapling-proofreading-api-openapi.yml
- aid: sapling:sapling-service-api
  name: Sapling Service API
  description: Health and version probes (no API key).
  humanURL: https://sapling.ai/docs/api/
  baseURL: https://api.sapling.ai
  tags:
  - service
  properties:
  - type: OpenAPI
    url: openapi/sapling-service-api-openapi.yml
x-backed-by:
- gradient-ventures
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 43
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Sapling API — frequently asked questions

Does Sapling have an API?

Yes. APIs.io lists 7 APIs from Sapling, including Sapling Account API, Sapling Analysis API and Sapling Detection API, and 4 more.

Is there an OpenAPI specification for the Sapling API?

Yes. APIs.io indexes 7 OpenAPI specifications for Sapling, each linked for download from this page.

How do I authenticate with the Sapling API?

Sapling documents its authentication (2 schemes). The details are profiled on APIs.io as Sapling Authentication.

How much does the Sapling API cost?

APIs.io lists 1 pricing plan for Sapling, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Sapling API ready for AI agents?

Sapling has a Kin Score of 65.7 out of 100 (strong) and an Agent Readiness score of 51.0 (agent-ready), scored by API Evangelist on 2026-10-31.

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