Lisan

Lisan is an AI-powered Arabic proofreading and writing-assistance platform, headquartered in the UAE and backed by 500 Global. Its language engine detects and corrects eight classes of error in Arabic text — spelling, grammar, morphology, semantics, style, formatting, proper nouns, and citations — and returns context-aware suggestions together with explanations that help writers build language skill, plus error statistics and performance reporting. Lisan reaches writers through a web application, a Windows desktop app, Microsoft Word, PowerPoint and Outlook add-ins, Chrome and Edge browser extensions, and a WordPress plugin. For institutions it adds enforcement of an organization's own style guide, writing-productivity tooling, and analytics dashboards, and it advertises an API and SDK for developers. As of July 2026 that developer surface is not publicly documented — Lisan publishes no developer portal, API reference, base URL, or machine-readable specification, and API/SDK access is arranged through its institutional contact channel.

Lisan is profiled on the APIs.io network. Tagged areas include Company, Arabic, Artificial Intelligence, Natural Language Processing, and Proofreading.

Lisan’s developer surface includes engineering blog, pricing, support, YouTube channel, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

21.9/100 emerging ▬ flat Agent 0/100 human only Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

0 APIs

Company Arabic Artificial Intelligence Natural Language Processing Proofreading Writing Grammar Language Learning Productivity Content

Kin Score

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

Composite quality — 21.9/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 13.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.7 / 9

Regulatory Posture 1.9 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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

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 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
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
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

13 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 7.1 — up to +18.6 composite points
Operational Transparency scores 0.0 — up to +13.0 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/lisan/apis.yml: open an issue on github.com/api-evangelist/lisan 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	17.2 (thin)	-	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.

Lisan API pricing

Prices published by Lisan, read 2026-10-07 from lisan.com/pricing/.

Plan	Price
Start Free	Start free Includes: Free tier on every flagship; Lisan workspace free to start; desktop apps free from Lisan Hub
Teams	Per product, per team Includes: Shared workspaces, AI features, admin controls, priority support, bundle pricing
Enterprise & Government	Per deployment Includes: Self-hosted and on-premises options, custom models, security review, training

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Lisan Plans Pricing

3 plans

PLANS

Security Posture 1

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

Lisan Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Learn 1

Tutorials, courses, talks, and written guidance

YouTube

YouTube

Operate 2

Status, limits, changes, and where to get help

Support

Support

Support

Support

Commercial 5

Pricing, plans, and the legal terms of use

Plans

Pricing

Pricing

TermsOfService

PrivacyPolicy

Company 6

The organization behind the API

Blog

Blog

Website

Website

Twitter

Twitter

LinkedIn

Facebook

Facebook

Instagram

Instagram

Source (apis.yml)

aid: lisan
name: Lisan
description: Lisan is an AI-powered Arabic proofreading and writing-assistance platform, headquartered in the UAE and backed
  by 500 Global. Its language engine detects and corrects eight classes of error in Arabic text — spelling, grammar, morphology,
  semantics, style, formatting, proper nouns, and citations — and returns context-aware suggestions together with explanations
  that help writers build language skill, plus error statistics and performance reporting. Lisan reaches writers through a
  web application, a Windows desktop app, Microsoft Word, PowerPoint and Outlook add-ins, Chrome and Edge browser extensions,
  and a WordPress plugin. For institutions it adds enforcement of an organization's own style guide, writing-productivity
  tooling, and analytics dashboards, and it advertises an API and SDK for developers. As of July 2026 that developer surface
  is not publicly documented — Lisan publishes no developer portal, API reference, base URL, or machine-readable specification,
  and API/SDK access is arranged through its institutional contact channel.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://cdn.prod.website-files.com/660d253c41a3be6dd1617c5c/67d16d2c0c7a550024149cdf_logo%20black%20256%201.png
url: https://raw.githubusercontent.com/api-evangelist/lisan/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: api-advertised-but-undocumented
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Arabic
- Artificial Intelligence
- Natural Language Processing
- Proofreading
- Writing
- Grammar
- Language Learning
- Productivity
- Content
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/lisan-plans-pricing.yml
- url: https://lisan.com/company/news/
  type: Blog
- type: Website
  url: https://lisan.ai
- type: Login
  name: Lisan web application
  url: https://app.lisan.com
- type: Pricing
  name: Pricing for individuals
  url: https://www.lisan.ai/pricing
- type: Pricing
  name: Pricing for institutions
  url: https://www.lisan.ai/institutional-pricing
- type: Support
  name: Contact
  url: https://www.lisan.ai/contact
- type: Support
  name: Institutional contact (channel for API and SDK access)
  url: https://www.lisan.ai/institutional-contact
- type: TermsOfService
  url: https://www.lisan.ai/terms
- type: PrivacyPolicy
  name: Chrome extension privacy policy (the only privacy policy Lisan publishes)
  url: https://www.lisan.ai/lisan-chrome-extension-privacy-policy
- type: Twitter
  url: https://twitter.com/lisan_ar
- type: LinkedIn
  url: https://www.linkedin.com/company/lisanai/
- type: Facebook
  url: https://www.facebook.com/LisanArabic
- type: Instagram
  url: https://www.instagram.com/lisan.ai/
- type: YouTube
  url: https://www.youtube.com/channel/UCmkmpvtag3bk7XrwpInsFiw
- type: DomainSecurity
  url: security/lisan-domain-security.yml
- type: LLMsTxt
  url: llms/lisan-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Lisan API — frequently asked questions

How much does the Lisan API cost?

Lisan publishes its prices; its Start Free plan is Start free as of 2026-10-07. APIs.io lists 3 pricing plans for Lisan, with each plan's price, limits and inclusions under Pricing on this page.

Is the Lisan API ready for AI agents?

Lisan has a Kin Score of 21.9 out of 100 (emerging) and an Agent Readiness score of 0.0 (human-only), 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

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/lisan"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/lisan/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/lisan/evidence"

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