agentboxd-com

Agentboxd provides email inboxes and sign‑in services for AI agents. Its Homingbox product offers AI agents a dedicated email address via a single API call, supporting AI triage, draft approvals, webhooks, WebSockets, SMTP, and MCP. The Shakehand product lets AI agents sign into applications. Additional offerings include aSIM, a SIM card for AI agents. The service is EU‑hosted, currently in public beta, free to start with paid plans forthcoming.

agentboxd-com publishes 17 API contracts indexed on the APIs.io network, including Agent network API, Agent self-signup API, Contacts API, and 14 more. Tagged areas include AI, Email, API, Messaging, and Beta.

The agentboxd-com catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

agentboxd-com’s developer surface includes changelog, documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, and 26 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

60.0/100 strong Agent 44/100 agent ready Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 1 Agent Skills

AIEmailAPIMessaging Beta

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 60.0/100 · strong

Contract Quality 11.0 / 21

Developer Ergonomics 8.0 / 17

Access Clarity 10.3 / 17

Operational Transparency 6.2 / 11

Contract Governance 7.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 5.5 / 15

Agent readiness — 44/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 0 / 7

Rate-Limit Signaling 7 / 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 4 / 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

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):

A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
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)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

4 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 51.8 — up to +12.1 composite points
Developer Ergonomics scores 46.9 — up to +10.6 composite points
Access Clarity scores 60.5 — up to +7.9 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/agentboxd-com/apis.yml: open an issue on github.com/api-evangelist/agentboxd-com 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 →

APIs 17

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

agentboxd-com Agent network API

aSIM agent cards, keys and the agent directory.

agentboxd-com Agent self-signup API

An agent creating its own workspace, and a person claiming it.

agentboxd-com Contacts API

Everyone your agents have exchanged mail with, with notes and labels, and the addresses your sends skip (suppressions).

agentboxd-com Domains API

Your own domains for sending and receiving.

agentboxd-com Drafts API

Messages a person reviews before they go out, and scheduled sends.

agentboxd-com Events API

The realtime event stream over WebSocket.

agentboxd-com Inboxes API

Email addresses for agents: create, list, pause and delete them.

agentboxd-com Knowledge API

Documents your agents draw on for AI reply drafts.

agentboxd-com Lists API

Allow and block lists for receiving, sending and replying.

agentboxd-com Messages API

Send, reply, forward, read and label mail; wait for mail; claim it from a work queue.

agentboxd-com Metrics API

Sending, delivery and bounce numbers.

agentboxd-com Other API

The Other API from agentboxd-com — 3 operation(s) for other.

agentboxd-com Search API

Full-text search over messages.

agentboxd-com Shakehand API

agentboxd-com Threads API

Conversations, per inbox or across all of them.

agentboxd-com Trust API

The emergency stop and human on call.

agentboxd-com Webhooks API

Signed HTTP notifications for new mail and other events.

Scroll for all 17

Agent Skills 1

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

create-inbox

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Agentboxd Com Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Agentboxd Com Rate Limits

2 limits

RATE LIMITS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Agentboxd Com Context

1 classes · 1 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

agentboxd-com API Rules

16 rules · 15 errors 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.

Agentboxd Com Openapi Overlay

0 actions · update

UNRECORDED

Security Posture 4

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

Agentboxd Com Authentication

0 schemes

SECURITY

Agentboxd Com Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentboxd Com Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentboxd Com Trust Center

SOC 2, ISO 27001, GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Agentboxd Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Agentboxd Com Agentic Access

137 operations · 76 acting · 4 human-in-the-loop

137 operations · 76 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 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

ErrorCatalog

Conformance

Scroll for all 8

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Compliance

SecurityTxt

Security

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

ChangeLog

ChangeLog

Roadmap

Roadmap

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

Hosts

Hosts

Source (apis.yml)

aid: agentboxd-com
name: agentboxd-com
description: Agentboxd provides email inboxes and sign‑in services for AI agents. Its Homingbox product offers AI agents a
  dedicated email address via a single API call, supporting AI triage, draft approvals, webhooks, WebSockets, SMTP, and MCP.
  The Shakehand product lets AI agents sign into applications. Additional offerings include aSIM, a SIM card for AI agents.
  The service is EU‑hosted, currently in public beta, free to start with paid plans forthcoming.
url: https://artifacts.apis.io/agentboxd-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-30 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-30'
modified: '2026-10-30'
tags:
- AI
- Email
- API
- Messaging
- Beta
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://agentboxd.com/icon-512.png
common:
- type: AgenticAccess
  url: agentic-access/agentboxd-com-agentic-access.yml
- type: RateLimits
  url: rate-limits/agentboxd-com-rate-limits.yml
- type: Spectral
  url: rules/agentboxd-com-rules.yml
- type: JSONLD
  url: json-ld/agentboxd-com-context.jsonld
- type: Vocabulary
  url: vocabulary/agentboxd-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/agentboxd-com-data-model.yml
- type: Idempotency
  url: conventions/agentboxd-com-conventions.yml
- type: Conventions
  url: conventions/agentboxd-com-conventions.yml
- type: Compliance
  url: https://agentboxd.com/security
- type: ErrorCatalog
  url: errors/agentboxd-com-problem-types.yml
- type: Conformance
  url: conformance/agentboxd-com-conformance.yml
- type: LLMsTxt
  url: llms/agentboxd-com-llms.txt
- type: SecurityTxt
  url: well-known/agentboxd-com-security.txt
- type: WellKnown
  url: well-known/agentboxd-com-well-known.yml
- type: Hosts
  url: hosts/agentboxd-com-hosts.yml
- type: Security
  url: https://agentboxd.com/security
- type: ChangeLog
  url: https://agentboxd.com/changelog
- type: TrustCenter
  url: security/agentboxd-com-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/agentboxd-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/agentboxd-com-domain-security.yml
- type: Website
  url: https://agentboxd.com/
- type: DeveloperPortal
  url: https://agentboxd.com/docs
- type: Documentation
  url: https://agentboxd.com/docs
- type: APIReference
  url: https://agentboxd.com/docs/api
- type: GettingStarted
  url: https://agentboxd.com/docs/quickstart
- type: Blog
  url: https://agentboxd.com/blog
- type: GitHubOrganization
  url: https://github.com/agentboxd
- type: Roadmap
  url: https://agentboxd.com/roadmap
- type: Pricing
  url: https://agentboxd.com/pricing
- type: SignUp
  url: https://agentboxd.com/login
- type: TermsOfService
  url: https://agentboxd.com/legal/terms
- type: PrivacyPolicy
  url: https://agentboxd.com/privacy
apis:
- aid: agentboxd-com:agentboxd-com-agent-network-api
  name: agentboxd-com Agent network API
  description: aSIM agent cards, keys and the agent directory.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Agent network
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-agent-network-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-agent-self-signup-api
  name: agentboxd-com Agent self-signup API
  description: An agent creating its own workspace, and a person claiming it.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Agent self-signup
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-agent-self-signup-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-contacts-api
  name: agentboxd-com Contacts API
  description: Everyone your agents have exchanged mail with, with notes and labels, and the addresses your sends skip (suppressions).
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-contacts-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-domains-api
  name: agentboxd-com Domains API
  description: Your own domains for sending and receiving.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Domains
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-domains-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-drafts-api
  name: agentboxd-com Drafts API
  description: Messages a person reviews before they go out, and scheduled sends.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Drafts
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-drafts-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-events-api
  name: agentboxd-com Events API
  description: The realtime event stream over WebSocket.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-events-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-inboxes-api
  name: agentboxd-com Inboxes API
  description: 'Email addresses for agents: create, list, pause and delete them.'
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Inboxes
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-inboxes-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-knowledge-api
  name: agentboxd-com Knowledge API
  description: Documents your agents draw on for AI reply drafts.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Knowledge
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-knowledge-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-lists-api
  name: agentboxd-com Lists API
  description: Allow and block lists for receiving, sending and replying.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Lists
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-lists-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-messages-api
  name: agentboxd-com Messages API
  description: Send, reply, forward, read and label mail; wait for mail; claim it from a work queue.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-messages-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-metrics-api
  name: agentboxd-com Metrics API
  description: Sending, delivery and bounce numbers.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-metrics-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-other-api
  name: agentboxd-com Other API
  description: The Other API from agentboxd-com — 3 operation(s) for other.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Other
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-other-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-search-api
  name: agentboxd-com Search API
  description: Full-text search over messages.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-search-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-shakehand-api
  name: agentboxd-com Shakehand API
  description: 'Sign in with Agentboxd: identity tokens, sign-in apps and identities without a mailbox.'
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Shakehand
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-shakehand-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-threads-api
  name: agentboxd-com Threads API
  description: Conversations, per inbox or across all of them.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Threads
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-threads-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-trust-api
  name: agentboxd-com Trust API
  description: The emergency stop and human on call.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Trust
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-trust-api-openapi.yml
- aid: agentboxd-com:agentboxd-com-webhooks-api
  name: agentboxd-com Webhooks API
  description: Signed HTTP notifications for new mail and other events.
  humanURL: https://agentboxd.com/docs/api
  baseURL: https://api.agentboxd.com
  tags:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/agentboxd-com-webhooks-api-openapi.yml
x-enrichment:
  date: '2026-10-30'
  status: enriched
  artifacts_added: 38
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

agentboxd-com API — frequently asked questions

Does agentboxd-com have an API?

Yes. APIs.io lists 17 APIs from agentboxd-com, including agentboxd-com Agent network API, agentboxd-com Agent self-signup API and agentboxd-com Contacts API, and 14 more.

Is there an OpenAPI specification for the agentboxd-com API?

Yes. APIs.io indexes 17 OpenAPI specifications for agentboxd-com, each linked for download from this page.

How do I authenticate with the agentboxd-com API?

agentboxd-com uses bearer-token authentication (0 schemes). The details are profiled on APIs.io as Agentboxd Com Authentication.

Is the agentboxd-com API ready for AI agents?

agentboxd-com has a Kin Score of 60.0 out of 100 (strong) and an Agent Readiness score of 43.9 (agent-ready), scored by API Evangelist on 2026-10-31.

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