Writer

Writer is a generative AI platform purpose-built for the enterprise. The Writer AI Studio Platform API exposes the proprietary Palmyra family of LLMs, knowledge-graph retrieval, no-code Application invocation, tool calling, vision, translation, and content guardrails for enterprise content, summarization, and process-automation workflows.

Writer publishes 7 API contracts indexed on the APIs.io network, including File API, Generation API, KG API, and 4 more. Tagged areas include Artificial Intelligence, LLM, Enterprise, Content Generation, and Palmyra.

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

Writer’s developer surface includes pricing, authentication, documentation, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

37.3/100 thin ▲ 8.3 Agent 23/100 agent aware Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

AccessEnterpriseSelf serveFree trial⚡ Free to try

1 published contract

Artificial Intelligence LLM Enterprise Content GenerationPalmyraAgents Foundation Models

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 37.3/100 · thin

Contract Quality 9.3 / 19

Developer Ergonomics 4.7 / 15

Access Clarity 4.7 / 15

Operational Transparency 1.0 / 10

Contract Governance 4.1 / 9

Discoverability 5.5 / 8

Regulatory Posture 1.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · agent aware

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 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 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

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 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/.

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 github.com/api-evangelist/writer: open an issue to ask a question, or submit a pull request to add artifacts. 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.

Writer File API

The File API API from Writer — 4 operation(s) for file api.

Writer Generation API

The Generation API API from Writer — 5 operation(s) for generation api.

Writer KG API

The KG API API from Writer — 5 operation(s) for kg api.

Writer Template API

The template API from Writer — 4 operation(s) for template.

Writer Tools API

The Tools API API from Writer — 2 operation(s) for tools api.

Writer Translation API

The Translation API from Writer — 1 operation(s) for translation.

Writer Vision API

The Vision API from Writer — 1 operation(s) for vision.

Scroll for all 7

Open Collections 9

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

API Collection

OPEN COLLECTION

File API API

OPEN COLLECTION

File API Generation API API

OPEN COLLECTION

File API KG API API

OPEN COLLECTION

File API template API

OPEN COLLECTION

File API Tools API API

OPEN COLLECTION

File API Translation API

OPEN COLLECTION

File API Vision API

OPEN COLLECTION

API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Writer Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Writer Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Writer Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Writer — cerebro rules

2 rules · 2 errors

SPECTRAL

Security Posture 2

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

Writer Authentication

http · 1 scheme

SECURITY

Writer Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Writer Agentic Access

30 operations · 19 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

SpectralRules

SpectralRules

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: writer
url: https://raw.githubusercontent.com/api-evangelist/writer/refs/heads/main/apis.yml
name: Writer
kind: company
description: Writer is a generative AI platform purpose-built for the enterprise. The Writer AI Studio Platform API exposes
  the proprietary Palmyra family of LLMs, knowledge-graph retrieval, no-code Application invocation, tool calling, vision,
  translation, and content guardrails for enterprise content, summarization, and process-automation workflows.
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: enterprise
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Enterprise (free trial) · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/writer.png
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-17
x-docs-hosting: vercel
tags:
- Artificial Intelligence
- LLM
- Enterprise
- Content Generation
- Palmyra
- Agents
- Foundation Models
tags_raw:
- AI
- LLM
- Enterprise
- Content Generation
- Palmyra
- Agents
- Foundation Models
created: '2026-05-08'
modified: '2026-09-16'
specificationVersion: '0.23'
apis:
- aid: writer:writer-file-api-api
  name: Writer File API
  description: The File API API from Writer — 4 operation(s) for file api.
  humanURL: https://dev.writer.com/api-reference/chat-api
  baseURL: https://api.writer.com/v1
  tags:
  - File API
  properties:
  - type: OpenAPI
    url: openapi/writer-file-api-api-openapi.yml
  - type: Documentation
    url: https://dev.writer.com/api-guides/chat-completion
  - type: APIReference
    url: https://dev.writer.com/api-reference/chat-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/text-generation
  - type: APIReference
    url: https://dev.writer.com/api-reference/completion-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/tool-calling
  - type: Documentation
    url: https://dev.writer.com/api-guides/knowledge-graph
  - type: APIReference
    url: https://dev.writer.com/api-reference/graph-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/file-management
  - type: APIReference
    url: https://dev.writer.com/api-reference/file-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/applications
  - type: APIReference
    url: https://dev.writer.com/api-reference/application-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/vision
  - type: Documentation
    url: https://dev.writer.com/api-guides/web-search
  - type: Documentation
    url: https://dev.writer.com/api-guides/translation
  - type: APIReference
    url: https://dev.writer.com/api-reference/model-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/guardrails
  - type: Documentation
    url: https://dev.writer.com/api-guides/quickstart
- aid: writer:writer-generation-api-api
  name: Writer Generation API
  description: The Generation API API from Writer — 5 operation(s) for generation api.
  humanURL: https://dev.writer.com/api-reference/chat-api
  baseURL: https://api.writer.com/v1
  tags:
  - Generation API
  properties:
  - type: OpenAPI
    url: openapi/writer-generation-api-api-openapi.yml
  - type: Documentation
    url: https://dev.writer.com/api-guides/chat-completion
  - type: APIReference
    url: https://dev.writer.com/api-reference/chat-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/text-generation
  - type: APIReference
    url: https://dev.writer.com/api-reference/completion-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/tool-calling
  - type: Documentation
    url: https://dev.writer.com/api-guides/knowledge-graph
  - type: APIReference
    url: https://dev.writer.com/api-reference/graph-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/file-management
  - type: APIReference
    url: https://dev.writer.com/api-reference/file-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/applications
  - type: APIReference
    url: https://dev.writer.com/api-reference/application-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/vision
  - type: Documentation
    url: https://dev.writer.com/api-guides/web-search
  - type: Documentation
    url: https://dev.writer.com/api-guides/translation
  - type: APIReference
    url: https://dev.writer.com/api-reference/model-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/guardrails
  - type: Documentation
    url: https://dev.writer.com/api-guides/quickstart
- aid: writer:writer-kg-api-api
  name: Writer KG API
  description: The KG API API from Writer — 5 operation(s) for kg api.
  humanURL: https://dev.writer.com/api-reference/chat-api
  baseURL: https://api.writer.com/v1
  tags:
  - KG API
  properties:
  - type: OpenAPI
    url: openapi/writer-kg-api-api-openapi.yml
  - type: Documentation
    url: https://dev.writer.com/api-guides/chat-completion
  - type: APIReference
    url: https://dev.writer.com/api-reference/chat-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/text-generation
  - type: APIReference
    url: https://dev.writer.com/api-reference/completion-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/tool-calling
  - type: Documentation
    url: https://dev.writer.com/api-guides/knowledge-graph
  - type: APIReference
    url: https://dev.writer.com/api-reference/graph-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/file-management
  - type: APIReference
    url: https://dev.writer.com/api-reference/file-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/applications
  - type: APIReference
    url: https://dev.writer.com/api-reference/application-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/vision
  - type: Documentation
    url: https://dev.writer.com/api-guides/web-search
  - type: Documentation
    url: https://dev.writer.com/api-guides/translation
  - type: APIReference
    url: https://dev.writer.com/api-reference/model-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/guardrails
  - type: Documentation
    url: https://dev.writer.com/api-guides/quickstart
- aid: writer:writer-template-api
  name: Writer Template API
  description: The template API from Writer — 4 operation(s) for template.
  humanURL: https://dev.writer.com/api-reference/chat-api
  baseURL: https://api.writer.com/v1
  tags:
  - Templates
  tags_raw:
  - template
  properties:
  - type: OpenAPI
    url: openapi/writer-template-api-openapi.yml
  - type: Documentation
    url: https://dev.writer.com/api-guides/chat-completion
  - type: APIReference
    url: https://dev.writer.com/api-reference/chat-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/text-generation
  - type: APIReference
    url: https://dev.writer.com/api-reference/completion-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/tool-calling
  - type: Documentation
    url: https://dev.writer.com/api-guides/knowledge-graph
  - type: APIReference
    url: https://dev.writer.com/api-reference/graph-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/file-management
  - type: APIReference
    url: https://dev.writer.com/api-reference/file-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/applications
  - type: APIReference
    url: https://dev.writer.com/api-reference/application-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/vision
  - type: Documentation
    url: https://dev.writer.com/api-guides/web-search
  - type: Documentation
    url: https://dev.writer.com/api-guides/translation
  - type: APIReference
    url: https://dev.writer.com/api-reference/model-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/guardrails
  - type: Documentation
    url: https://dev.writer.com/api-guides/quickstart
- aid: writer:writer-tools-api-api
  name: Writer Tools API
  description: The Tools API API from Writer — 2 operation(s) for tools api.
  humanURL: https://dev.writer.com/api-reference/chat-api
  baseURL: https://api.writer.com/v1
  tags:
  - Tools API
  properties:
  - type: OpenAPI
    url: openapi/writer-tools-api-api-openapi.yml
  - type: Documentation
    url: https://dev.writer.com/api-guides/chat-completion
  - type: APIReference
    url: https://dev.writer.com/api-reference/chat-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/text-generation
  - type: APIReference
    url: https://dev.writer.com/api-reference/completion-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/tool-calling
  - type: Documentation
    url: https://dev.writer.com/api-guides/knowledge-graph
  - type: APIReference
    url: https://dev.writer.com/api-reference/graph-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/file-management
  - type: APIReference
    url: https://dev.writer.com/api-reference/file-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/applications
  - type: APIReference
    url: https://dev.writer.com/api-reference/application-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/vision
  - type: Documentation
    url: https://dev.writer.com/api-guides/web-search
  - type: Documentation
    url: https://dev.writer.com/api-guides/translation
  - type: APIReference
    url: https://dev.writer.com/api-reference/model-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/guardrails
  - type: Documentation
    url: https://dev.writer.com/api-guides/quickstart
- aid: writer:writer-translation-api
  name: Writer Translation API
  description: The Translation API from Writer — 1 operation(s) for translation.
  humanURL: https://dev.writer.com/api-reference/chat-api
  baseURL: https://api.writer.com/v1
  tags:
  - Translation
  properties:
  - type: OpenAPI
    url: openapi/writer-translation-api-openapi.yml
  - type: Documentation
    url: https://dev.writer.com/api-guides/chat-completion
  - type: APIReference
    url: https://dev.writer.com/api-reference/chat-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/text-generation
  - type: APIReference
    url: https://dev.writer.com/api-reference/completion-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/tool-calling
  - type: Documentation
    url: https://dev.writer.com/api-guides/knowledge-graph
  - type: APIReference
    url: https://dev.writer.com/api-reference/graph-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/file-management
  - type: APIReference
    url: https://dev.writer.com/api-reference/file-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/applications
  - type: APIReference
    url: https://dev.writer.com/api-reference/application-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/vision
  - type: Documentation
    url: https://dev.writer.com/api-guides/web-search
  - type: Documentation
    url: https://dev.writer.com/api-guides/translation
  - type: APIReference
    url: https://dev.writer.com/api-reference/model-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/guardrails
  - type: Documentation
    url: https://dev.writer.com/api-guides/quickstart
- aid: writer:writer-vision-api
  name: Writer Vision API
  description: The Vision API from Writer — 1 operation(s) for vision.
  humanURL: https://dev.writer.com/api-reference/chat-api
  baseURL: https://api.writer.com/v1
  tags:
  - Vision
  properties:
  - type: OpenAPI
    url: openapi/writer-vision-api-openapi.yml
  - type: Documentation
    url: https://dev.writer.com/api-guides/chat-completion
  - type: APIReference
    url: https://dev.writer.com/api-reference/chat-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/text-generation
  - type: APIReference
    url: https://dev.writer.com/api-reference/completion-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/tool-calling
  - type: Documentation
    url: https://dev.writer.com/api-guides/knowledge-graph
  - type: APIReference
    url: https://dev.writer.com/api-reference/graph-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/file-management
  - type: APIReference
    url: https://dev.writer.com/api-reference/file-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/applications
  - type: APIReference
    url: https://dev.writer.com/api-reference/application-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/vision
  - type: Documentation
    url: https://dev.writer.com/api-guides/web-search
  - type: Documentation
    url: https://dev.writer.com/api-guides/translation
  - type: APIReference
    url: https://dev.writer.com/api-reference/model-api
  - type: Documentation
    url: https://dev.writer.com/api-guides/guardrails
  - type: Documentation
    url: https://dev.writer.com/api-guides/quickstart
common:
- type: Pricing
  url: https://writer.com/plans/
- type: AgenticAccess
  url: agentic-access/writer-agentic-access.yml
- type: DomainSecurity
  url: security/writer-domain-security.yml
- type: Authentication
  url: authentication/writer-authentication.yml
- type: GitHubOrganization
  url: https://github.com/writer
- type: LinkedIn
  url: https://www.linkedin.com/company/getwriter
- type: Website
  url: https://writer.com/
- type: Documentation
  url: https://dev.writer.com/
- type: Plans
  url: plans/writer-plans-pricing.yml
- type: RateLimits
  url: rate-limits/writer-rate-limits.yml
- type: FinOps
  url: finops/writer-finops.yml
- type: Integrations
  url: https://writer.com/partners/
- type: LlmsText
  url: https://api.writer.com/llms.txt
- url: https://writer.com/blog/feed/
  type: Blog
- type: SpectralRules
  url: https://github.com/writer/cerebro/blob/9dd6c92664bc6d15430a821b97995b4a53294a6d/.spectral.yaml
integrations:
- name: WRITER - Enterprise AI platform
- name: Financial services
- name: Healthcare & life sciences
- name: Retail & consumer goods
- name: Technology
- name: Marketing
- name: Sales
- name: Writer’s Room blog
- name: Engineering blog
- name: 'Podcast: Humans of AI'
- name: Events & webinars
- name: Marketing AI ROI calculator
- name: Arrow right
- name: WRITER
- name: LinkedIn
- name: G2
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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