Napkin

Napkin AI turns typed or pasted text into editable visuals — diagrams, charts, icons, and infographics — and into full presentation decks, with no prompting or design skill required. Two products share one text-to-visual engine: Napkin Visuals (standalone diagrams and graphics) and Napkin Slides (beta AI presentation agent). Napkin also ships a developer API (currently a developer preview) for generating visuals programmatically: submit text, poll the asynchronous request, and download the results as SVG, PNG, or PPT. The API authenticates with account bearer tokens or an OAuth 2.0 authorization-code flow. Napkin is an AI company backed by CRV.

Napkin publishes 1 API contract indexed on the APIs.io network: Visuals API. Tagged areas include Company, Artificial Intelligence, Visualization, Diagramming, and Infographics.

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

Napkin’s developer surface includes documentation, API reference, getting-started guide, changelog, support, engineering blog, pricing, and 24 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

54.2/100 developing ▬ flat Agent 25/100 agent aware Front door AI 5/6 prominent 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 Artificial Intelligence Visualization Diagramming Infographics Presentations Content Generation Developer API Design

Kin Score

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

Composite quality — 54.2/100 · developing

Contract Quality 9.8 / 19

Developer Ergonomics 8.8 / 15

Access Clarity 10.7 / 15

Operational Transparency 2.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 5.6 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 25/100 · 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 8 / 8

Request/Response Examples 0 / 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 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 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 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
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
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 52.0 — up to +12.0 composite points
Operational Transparency scores 23.7 — up to +9.9 composite points
Contract Governance scores 18.2 — up to +9.8 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/napkin/apis.yml: open an issue on github.com/api-evangelist/napkin 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
Raycast Store Extensions (first-party publishers + community-wrapped products)	covered	9.6 (thin)	-	-

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.

Standards implemented 2

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.

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 1

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

Napkin Visuals API

Create, poll, and download programmatic visual generations.

Open Collections 1

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

Napkin Visuals API

OPEN COLLECTION

Agent Skills 1

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

Generate a visual from text (Napkin API)

AGENT SKILL

Napkin API pricing

Prices published by Napkin, read 2026-10-07 from www.napkin.ai/pricing/.

Plan	Price
Free Forever	$0 per person Includes: 500 AI credits per week
Plus	$9 per person/ month Includes: 10,000 AI credits per month
Pro	$22 per person/ month Includes: 30,000 AI credits per month
Enterprise	Contact Us

Plan details, limits and sources →

Billed by: person · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Napkin Plans Pricing

4 plans

PLANS

Service Levels 1

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

Napkin

SLA

FinOps 1

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

Napkin Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Napkin API Rules

68 rules · 66 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.

Napkin Overlay

3 actions · update · napkin-openapi.yml

DERIVED

Security Posture 3

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

Napkin Authentication

http/oauth2 · 2 schemes

SECURITY

Napkin Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Napkin Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Napkin Scopes

2 scopes · authorizationCode

2 scopes

SCOPES

Agentic Access 1

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

Napkin Agentic Access

3 operations · 1 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conventions

ErrorCatalog

DataModel

Conformance

Access & Security 6

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Deprecation

Deprecation

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 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: napkin
name: Napkin
description: 'Napkin AI turns typed or pasted text into editable visuals — diagrams, charts, icons, and infographics — and
  into full presentation decks, with no prompting or design skill required. Two products share one text-to-visual engine:
  Napkin Visuals (standalone diagrams and graphics) and Napkin Slides (beta AI presentation agent). Napkin also ships a developer
  API (currently a developer preview) for generating visuals programmatically: submit text, poll the asynchronous request,
  and download the results as SVG, PNG, or PPT. The API authenticates with account bearer tokens or an OAuth 2.0 authorization-code
  flow. Napkin is an AI company backed by CRV.'
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
  - scopes
  - security
  generated: '2026-11-06'
  method: derived
image: https://www.napkin.ai/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/napkin/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- crv
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-20'
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
tags:
- Company
- Artificial Intelligence
- Visualization
- Diagramming
- Infographics
- Presentations
- Content Generation
- Developer API
- Design
tags_raw:
- Company
- Ai
- Visualization
- Diagrams
- Infographics
- Presentations
- Content Generation
- Developer API
- Design
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: napkin:napkin-visuals-api
  name: Napkin Visuals API
  description: Create, poll, and download programmatic visual generations.
  humanURL: https://api.napkin.ai/
  baseURL: https://api.napkin.ai
  tags:
  - Visuals
  properties:
  - type: OpenAPI
    url: openapi/napkin-visuals-api-openapi.yml
  - type: Authentication
    url: authentication/napkin-authentication.yml
  - type: OAuthScopes
    url: scopes/napkin-scopes.yml
  - type: ErrorCatalog
    url: errors/napkin-problem-types.yml
  - type: Conventions
    url: conventions/napkin-conventions.yml
  - type: DataModel
    url: data-model/napkin-data-model.yml
  - type: Conformance
    url: conformance/napkin-conformance.yml
common:
- type: Plans
  url: plans/napkin-plans-pricing.yml
- type: Overlay
  url: overlays/napkin-overlay.yaml
- type: AgenticAccess
  url: agentic-access/napkin-agentic-access.yml
- type: Website
  url: https://www.napkin.ai/
- type: DeveloperPortal
  url: https://api.napkin.ai/
- type: Documentation
  url: https://api.napkin.ai/
- type: APIReference
  url: https://api.napkin.ai/api/create-visual-request
- type: GettingStarted
  url: https://api.napkin.ai/
- type: ChangeLog
  url: https://api.napkin.ai/docs/changelog
- type: Support
  url: https://help.napkin.ai/en/
- type: Blog
  url: https://www.napkin.ai/blog/
- type: Pricing
  url: https://www.napkin.ai/pricing/
- type: SignUp
  url: https://app.napkin.ai/signin
- type: TermsOfService
  url: https://www.napkin.ai/terms-conditions/
- type: PrivacyPolicy
  url: https://www.napkin.ai/privacy-policy/
- type: Authentication
  url: authentication/napkin-authentication.yml
- type: OAuthScopes
  url: scopes/napkin-scopes.yml
- type: Lifecycle
  url: lifecycle/napkin-lifecycle.yml
- type: Deprecation
  url: https://api.napkin.ai/docs/changelog
- type: Conventions
  url: conventions/napkin-conventions.yml
- type: ErrorCatalog
  url: errors/napkin-problem-types.yml
- type: LLMsTxt
  url: llms/napkin-llms.txt
- type: WellKnown
  url: well-known/napkin-well-known.yml
- type: SecurityTxt
  url: well-known/napkin-security.txt
- type: VulnerabilityDisclosure
  url: security/napkin-vulnerability-disclosure.yml
- type: Security
  url: https://vdp.napkin.ai
- type: DomainSecurity
  url: security/napkin-domain-security.yml
- type: X-MCPServerCandidate
  url: mcp/napkin-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: AgentSkill
  url: skills/napkin-generate-visual.md
- type: DataModel
  url: data-model/napkin-data-model.yml
- type: Conformance
  url: conformance/napkin-conformance.yml
x-enrichment:
  date: '2026-07-20'
  status: minimal
  artifacts_added: 1
  pass: local-v1

Napkin API — frequently asked questions

Does Napkin have an API?

Yes. APIs.io lists 1 API from Napkin, including Napkin Visuals API.

Is there an OpenAPI specification for the Napkin API?

Yes. APIs.io indexes 1 OpenAPI specification for Napkin, each linked for download from this page.

How do I authenticate with the Napkin API?

Napkin uses bearer-token authentication (http/oauth2 · 2 schemes). The details are profiled on APIs.io as Napkin Authentication.

How much does the Napkin API cost?

Napkin publishes its prices; its Free Forever plan is $0 per person as of 2026-10-07. APIs.io lists 4 pricing plans for Napkin, with each plan's price, limits and inclusions under Pricing on this page.

Is the Napkin API ready for AI agents?

Napkin has a Kin Score of 54.2 out of 100 (developing) and an Agent Readiness score of 24.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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