Tzafon

Tzafon is a machine intelligence company with offices in San Francisco, Tel Aviv, and Zurich, advancing multimodality, high performance compute, and continuous learning. Its developer platform Lightcone is the computer-use API: cloud browsers and desktops operated by Northstar, a vision-language model trained with GUI reinforcement learning to see screens and act on them. Developers describe work in plain language and Northstar operates a computer from start to finish, or they drive computers directly through a REST API, official Python and TypeScript SDKs, a CLI, and an official MCP server -- with OpenAI-compatible Responses and Chat Completions endpoints for drop-in computer-use loops.

Tzafon is listed with 1 API on the APIs.io network. Tagged areas include Company, Artificial Intelligence, Computer Use Agents, Browser Automation, and AI Agents.

Tzafon’s developer surface includes documentation, API reference, getting-started guide, authentication, changelog, CLI, code examples, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

43.5/100 developing ▬ flat Agent 16/100 agent aware Front door AI 3/6 light Heartbeat 37/100 slowing saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 API 1 MCP Servers

Company Artificial Intelligence Computer Use Agents Browser Automation AI AgentsVision Language ModelsCloud ComputersAutomation

Kin Score

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

Composite quality — 43.5/100 · developing

Contract Quality 1.4 / 21

Developer Ergonomics 11.7 / 17

Access Clarity 12.5 / 17

Operational Transparency 2.9 / 11

Contract Governance 1.9 / 10

Discoverability 6.1 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 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

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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

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 6.5 — up to +23.4 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Operational Transparency scores 26.3 — up to +9.6 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/tzafon/apis.yml: open an issue on github.com/api-evangelist/tzafon 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 →

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.

The OpenAI Interface

prose — states compatibility; nothing published to check it against

2 core of 338 operations graded · api-commons/models

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

APIs 1

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

Lightcone API

The Lightcone API by Tzafon provides cloud browser and desktop computers operated by AI. It spans an agent Tasks API (start, stream, pause, resume, inject messages) driven by th...

MCP Servers 1

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

Tzafon MCP Server

MCP server; 9 tools listed.

MCP SERVER

Tzafon API pricing

Prices published by Tzafon, read 2026-10-07 from docs.lightcone.ai/guides/pricing.

Plan	Price
tzafon.northstar-cua-fast-1.6 (input)	$0.50/M tokens per million input tokens
tzafon.northstar-cua-fast-1.6 (output)	$1.50/M tokens per million output tokens
tzafon.northstar-cua-fast (input)	$0.50/M tokens per million input tokens
tzafon.northstar-cua-fast (output)	$1.50/M tokens per million output tokens
tzafon.sm-1 (input)	$0.20/M tokens per million input tokens
tzafon.sm-1 (output)	$0.30/M tokens per million output tokens
CPU	$0.38/ core-hour
Memory	$0.095/ GiB-hour

Plan details, limits and sources →

Billed by: million input tokens · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Tzafon Plans Pricing

8 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Tzafon Rate Limits

0 limits

RATE LIMITS

Service Levels 1

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

Tzafon

SLA

FinOps 1

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

Tzafon Finops

FINOPS

Security Posture 2

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

Tzafon Authentication

http · 1 scheme

SECURITY

Tzafon Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

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 2

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conventions

Idempotency

ErrorCatalog

Conformance

DataModel

Build 5

SDKs, sample code, and the tooling you integrate with

Packages

SDKs

CLI

CodeExamples

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 5

Status, limits, changes, and where to get help

ChangeLog

StatusPage

Deprecation

RateLimits

Support

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

Pricing

Pricing

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: tzafon
name: Tzafon
description: 'Tzafon is a machine intelligence company with offices in San Francisco, Tel Aviv, and Zurich, advancing multimodality,
  high performance compute, and continuous learning. Its developer platform Lightcone is the computer-use API: cloud browsers
  and desktops operated by Northstar, a vision-language model trained with GUI reinforcement learning to see screens and act
  on them. Developers describe work in plain language and Northstar operates a computer from start to finish, or they drive
  computers directly through a REST API, official Python and TypeScript SDKs, a CLI, and an official MCP server -- with OpenAI-compatible
  Responses and Chat Completions endpoints for drop-in computer-use loops.'
url: https://raw.githubusercontent.com/api-evangelist/tzafon/refs/heads/main/apis.yml
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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: high
  source:
  - plans
  - authentication
  - rate-limits
  - security
  generated: '2026-11-06'
  method: derived
image: https://docs.lightcone.ai/og-image.jpg
x-type: company
x-source: vc-portfolio
x-backed-by:
- hv-capital
x-tier: enriched
x-tier-reason: enrichment-pipeline-local-v1
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 14
  pass: local-v1
tags:
- Company
- Artificial Intelligence
- Computer Use Agents
- Browser Automation
- AI Agents
- Vision Language Models
- Cloud Computers
- Automation
apis:
- aid: tzafon:lightcone-api
  name: Lightcone API
  description: The Lightcone API by Tzafon provides cloud browser and desktop computers operated by AI. It spans an agent
    Tasks API (start, stream, pause, resume, inject messages) driven by the Northstar computer-use model, a direct computer-control
    surface (create/list/delete computers, click, type, scroll, navigate, screenshot, shell exec, tabs, batch actions), an
    OpenAI-compatible Responses API with computer-use tool calls and multi-turn previous_response_id chaining, Chat Completions,
    and a Models listing. Errors use RFC 7807 problem+json; task streams are resumable SSE.
  image: https://docs.lightcone.ai/og-image.jpg
  humanURL: https://docs.lightcone.ai/
  baseURL: https://api.tzafon.ai
  tags:
  - Computer Use Agents
  - Browser Automation
  - AI Agents
  - Cloud Computers
  properties:
  - type: Documentation
    url: https://docs.lightcone.ai/
  - type: APIReference
    url: https://docs.lightcone.ai/api
  overlays: []
common:
- type: Plans
  url: plans/tzafon-plans-pricing.yml
- type: Website
  url: https://www.lightcone.ai/
- type: DomainSecurity
  url: security/tzafon-domain-security.yml
- type: DeveloperPortal
  url: https://lightcone.ai/dashboard
- type: Documentation
  url: https://docs.lightcone.ai/
- type: APIReference
  url: https://docs.lightcone.ai/api
- type: GettingStarted
  url: https://docs.lightcone.ai/guides/quickstart
- type: Authentication
  url: authentication/tzafon-authentication.yml
- type: ChangeLog
  url: changelog/tzafon-changelog.yml
- type: StatusPage
  url: https://tzafon.instatus.com/
- type: Deprecation
  url: https://docs.lightcone.ai/guides/changelog
- type: Lifecycle
  url: lifecycle/tzafon-lifecycle.yml
- type: Conventions
  url: conventions/tzafon-conventions.yml
- type: Idempotency
  url: conventions/tzafon-conventions.yml
- type: ErrorCatalog
  url: errors/tzafon-problem-types.yml
- type: RateLimits
  url: rate-limits/tzafon-rate-limits.yml
- type: Packages
  url: packages/tzafon-packages.yml
- type: SDKs
  url: packages/tzafon-packages.yml
- type: CLI
  url: cli/tzafon-cli.yml
- type: MCPServer
  url: mcp/tzafon-mcp.yml
- type: LLMsTxt
  url: llms/tzafon-llms.txt
- type: Conformance
  url: conformance/tzafon-conformance.yml
- type: DataModel
  url: data-model/tzafon-data-model.yml
- type: CodeExamples
  url: https://github.com/tzafon/lightcone/tree/main/examples
- type: GitHubOrganization
  url: https://github.com/tzafon
- type: Pricing
  url: https://docs.lightcone.ai/guides/pricing
- type: SignUp
  url: https://lightcone.ai/
- type: PrivacyPolicy
  url: https://www.tzafon.ai/legal
- type: Support
  url: https://docs.lightcone.ai/guides/troubleshooting
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io

Tzafon API — frequently asked questions

Does Tzafon have an API?

Yes. APIs.io lists 1 API from Tzafon, including Lightcone API.

How do I authenticate with the Tzafon API?

Tzafon uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Tzafon Authentication.

How much does the Tzafon API cost?

Tzafon publishes its prices; its tzafon.northstar-cua-fast-1.6 (input) plan is $0.50/M tokens per million input tokens as of 2026-10-07. APIs.io lists 8 pricing plans for Tzafon, with each plan's price, limits and inclusions under Pricing on this page.

Does Tzafon have an MCP server?

Yes. APIs.io lists 1 MCP server for Tzafon: MCP server; 9 tools listed.

Is the Tzafon API ready for AI agents?

Tzafon has a Kin Score of 43.5 out of 100 (developing) and an Agent Readiness score of 15.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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