Toit

Toit builds an open-source, high-level programming language and runtime for microcontrollers, targeting the ESP32 family, together with fleet-management tooling for deploying, monitoring and hot-reloading software across large fleets of connected IoT devices. The Toit language, virtual machine, package registry and the Jaguar (`jag`) live-reload developer CLI are open source and free; Toit also offers a self-hostable fleet broker and paid engineering support. The company previously operated a managed cloud platform exposing a gRPC API (device, pub/sub data, program compilation and organization management) before pivoting to the open-source language stack; those Protobuf definitions were archived in 2023. Toit is backed by Creandum.

Toit is profiled on the APIs.io network. Tagged areas include Company, Software-as-a-Service, IoT, Embedded, and ESP32.

Toit’s developer surface includes documentation, getting-started guide, support, engineering blog, pricing, authentication, CLI, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

32.5/100 thin ▬ flat Agent 16/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Software-as-a-Service IoT EmbeddedESP32Microcontrollers Programming Language Fleet Management Firmware Developer Tools gRPC

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 32.5/100 · thin

Contract Quality 6.7 / 25

Developer Ergonomics 12.9 / 20

Access Clarity 6.3 / 20

Operational Transparency 0.3 / 13

Contract Governance 0.5 / 12

Discoverability 5.7 / 10

Agent readiness — 16/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 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 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

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.

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/toit: 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 →

Security Posture 2

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

Toit Authentication

bearer/apiKey · 2 schemes

SECURITY

Toit Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

DataModel

DataModel

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

GitHubOrganization

CLI

Packages

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Protobuf

Protobuf

Source (apis.yml)

aid: toit
name: Toit
description: Toit builds an open-source, high-level programming language and runtime for microcontrollers, targeting the ESP32
  family, together with fleet-management tooling for deploying, monitoring and hot-reloading software across large fleets
  of connected IoT devices. The Toit language, virtual machine, package registry and the Jaguar (`jag`) live-reload developer
  CLI are open source and free; Toit also offers a self-hostable fleet broker and paid engineering support. The company previously
  operated a managed cloud platform exposing a gRPC API (device, pub/sub data, program compilation and organization management)
  before pivoting to the open-source language stack; those Protobuf definitions were archived in 2023. Toit is backed by Creandum.
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://github.com/toitlang.png
url: https://raw.githubusercontent.com/api-evangelist/toit/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- creandum
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Software-as-a-Service
- IoT
- Embedded
- ESP32
- Microcontrollers
- Programming Language
- Fleet Management
- Firmware
- Developer Tools
- gRPC
tags_raw:
- Company
- Saas
- IoT
- Embedded
- ESP32
- Microcontrollers
- Programming Language
- Fleet Management
- Firmware
- Developer Tools
- gRPC
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: X-MCPServerCandidate
  url: mcp/toit-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: Website
  url: https://toit.io/
- type: DeveloperPortal
  url: https://docs.toit.io/
- type: Documentation
  url: https://docs.toit.io/
- type: GettingStarted
  url: https://docs.toit.io/getstarted
- type: Support
  url: https://help.toit.io/
- type: Blog
  url: https://blog.toit.io/
- type: Pricing
  url: https://toit.io/pricing
- type: TermsOfService
  url: https://toit.io/terms-of-service
- type: PrivacyPolicy
  url: https://toit.io/privacy-policy
- type: GitHubOrganization
  url: https://github.com/toitlang
- type: GitHubOrganization
  name: toitware
  url: https://github.com/toitware
- type: Protobuf
  name: Toit cloud gRPC API definitions (legacy, archived)
  url: grpc/toit-api-index.yml
- type: Authentication
  url: authentication/toit-authentication.yml
- type: Conformance
  url: conformance/toit-conformance.yml
- type: DataModel
  url: data-model/toit-data-model.yml
- type: CLI
  url: cli/toit-cli.yml
- type: Packages
  url: packages/toit-packages.yml
- type: SDKs
  name: Toit language SDK
  url: packages/toit-packages.yml
- type: DomainSecurity
  url: security/toit-domain-security.yml
- type: LLMsTxt
  url: llms/toit-llms.txt
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 9
  pass: local-v1

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