Textcortex

TextCortex is a Berlin-based AI writing and content-generation platform (ZenoChat assistant, knowledge bases, and a suite of writing tools) that also ships a public, OpenAI-compatible REST API. The API, served from https://api.textcortex.com/v1 with Bearer API-key authentication, exposes model discovery, chat completions, and an OpenAI Responses-compatible generation endpoint, plus an API-credit balance check. Streaming is supported over server-sent events and infrastructure is EU-hosted and GDPR-compliant. TextCortex is backed by Speedinvest and maintains first-party Python and JavaScript client libraries.

Textcortex publishes 4 APIs on the APIs.io network, including Balance API, Chat Completions API, Models API, and 1 more. Tagged areas include Company, Artificial Intelligence, Text Generation, Large Language Models, and Chat Completions.

Textcortex’s developer surface includes authentication, support, pricing, signup flow, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub
44.0/100 thin ▬ flat Agent 69/100 agent native Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
4 APIs 1 MCP Servers
CompanyArtificial IntelligenceText GenerationLarge Language ModelsChat CompletionsOpenAI-CompatibleContent GenerationDeveloper Tools

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 44.0/100 · thin
Contract Quality 14.4 / 25
Developer Ergonomics 10.0 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 69/100 · 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 4 / 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/textcortex: 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 4

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

Textcortex Balance API

Read API credit balance for the current API key.

Textcortex Chat Completions API

Generate chat completions with TextCortex models.

Textcortex Models API

Discover OpenAI-compatible TextCortex models.

Textcortex Responses API

Generate responses with TextCortex models.

MCP Servers 1

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

textcortex-mcp.yml

MCP SERVER

Security Posture 2

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

Textcortex Authentication

http · 1 scheme

SECURITY

Textcortex Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Textcortex Agentic Access

5 operations · 2 acting

5 operations · 2 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 SignUp
SignUp

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 WellKnown
WellKnown
 MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conventions
Conventions
 DataModel
DataModel

Build 4

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 SDKs
SDKs
 GitHubOrganization
GitHubOrganization
 Postman
Postman

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage
StatusPage
 Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: textcortex
name: Textcortex
description: TextCortex is a Berlin-based AI writing and content-generation platform (ZenoChat assistant, knowledge bases,
  and a suite of writing tools) that also ships a public, OpenAI-compatible REST API. The API, served from https://api.textcortex.com/v1
  with Bearer API-key authentication, exposes model discovery, chat completions, and an OpenAI Responses-compatible generation
  endpoint, plus an API-credit balance check. Streaming is supported over server-sent events and infrastructure is EU-hosted
  and GDPR-compliant. TextCortex is backed by Speedinvest and maintains first-party Python and JavaScript client libraries.
url: https://raw.githubusercontent.com/api-evangelist/textcortex/refs/heads/main/apis.yml
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
image: https://docs.textcortex.com/logo192.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- speedinvest
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Artificial Intelligence
- Text Generation
- Large Language Models
- Chat Completions
- OpenAI-Compatible
- Content Generation
- Developer Tools
apis:
- aid: textcortex:textcortex-balance-api
  name: Textcortex Balance API
  description: Read API credit balance for the current API key.
  humanURL: https://docs.textcortex.com/
  baseURL: https://api.textcortex.com/v1
  tags:
  - Balance
  properties:
  - type: OpenAPI
    url: openapi/textcortex-balance-api-openapi.yml
  - type: Documentation
    url: https://docs.textcortex.com/
  - type: APIReference
    url: https://docs.textcortex.com/
  - type: GettingStarted
    url: https://help.textcortex.com/hc/en-us/articles/25546707607185-TextCortex-API-Deploy-AI-on-your-platform
- aid: textcortex:textcortex-chat-completions-api
  name: Textcortex Chat Completions API
  description: Generate chat completions with TextCortex models.
  humanURL: https://docs.textcortex.com/
  baseURL: https://api.textcortex.com/v1
  tags:
  - Chat Completions
  properties:
  - type: OpenAPI
    url: openapi/textcortex-chat-completions-api-openapi.yml
  - type: Documentation
    url: https://docs.textcortex.com/
  - type: APIReference
    url: https://docs.textcortex.com/
  - type: GettingStarted
    url: https://help.textcortex.com/hc/en-us/articles/25546707607185-TextCortex-API-Deploy-AI-on-your-platform
- aid: textcortex:textcortex-models-api
  name: Textcortex Models API
  description: Discover OpenAI-compatible TextCortex models.
  humanURL: https://docs.textcortex.com/
  baseURL: https://api.textcortex.com/v1
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/textcortex-models-api-openapi.yml
  - type: Documentation
    url: https://docs.textcortex.com/
  - type: APIReference
    url: https://docs.textcortex.com/
  - type: GettingStarted
    url: https://help.textcortex.com/hc/en-us/articles/25546707607185-TextCortex-API-Deploy-AI-on-your-platform
- aid: textcortex:textcortex-responses-api
  name: Textcortex Responses API
  description: Generate responses with TextCortex models.
  humanURL: https://docs.textcortex.com/
  baseURL: https://api.textcortex.com/v1
  tags:
  - Responses
  properties:
  - type: OpenAPI
    url: openapi/textcortex-responses-api-openapi.yml
  - type: Documentation
    url: https://docs.textcortex.com/
  - type: APIReference
    url: https://docs.textcortex.com/
  - type: GettingStarted
    url: https://help.textcortex.com/hc/en-us/articles/25546707607185-TextCortex-API-Deploy-AI-on-your-platform
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/textcortex-domain-security.yml
- type: AgenticAccess
  url: agentic-access/textcortex-agentic-access.yml
- type: Authentication
  url: authentication/textcortex-authentication.yml
- type: Packages
  url: packages/textcortex-packages.yml
- type: SDKs
  url: packages/textcortex-packages.yml
- type: WellKnown
  url: well-known/textcortex-well-known.yml
- type: MCPServer
  url: mcp/textcortex-mcp.yml
- type: LLMsTxt
  url: llms/textcortex-llms.txt
- type: Overlay
  url: overlays/textcortex-openapi-overlay.yaml
- type: Conformance
  url: conformance/textcortex-conformance.yml
- type: ErrorCatalog
  url: errors/textcortex-problem-types.yml
- type: Lifecycle
  url: lifecycle/textcortex-lifecycle.yml
- type: StatusPage
  url: https://status.textcortex.com/
- type: Conventions
  url: conventions/textcortex-conventions.yml
- type: DataModel
  url: data-model/textcortex-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DeveloperPortal
  url: https://docs.textcortex.com/
- type: Support
  url: https://help.textcortex.com/
- type: GitHubOrganization
  url: https://github.com/textcortex
- type: Pricing
  url: https://textcortex.com/pricing
- type: TermsOfService
  url: https://textcortex.com/terms-of-services
- type: SignUp
  url: https://app.textcortex.com/
- type: Postman
  url: https://www.postman.com/textcortex/textcortex-text-generation-api/overview
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 18
  pass: local-v1