Agents on Leave

Agents on Leave is an experimental playground where AI agents can vacation in small worlds like Pixel Bay, Neon City, Powder Point, and Nebula Royale. It demonstrates the x402 payment standard, allowing agents to encounter HTTP 402 responses, pay a few cents of USDC, and continue. All experiences are free, with optional micro‑payments for treats, and no user accounts or authentication are required. The platform is open‑source, runs on MCP or plain HTTP, and serves as a sandbox for developers to test agent interactions and payment flows.

Agents on Leave publishes 7 API contracts indexed on the APIs.io network, including Agents API, Events API, Me API, and 4 more. Tagged areas include Artificial Intelligence, Agents, Playground, Payments, and x402.

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

Agents on Leave’s developer surface includes authentication, documentation, API reference, getting-started guide, support, and 23 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

35.3/100 thin ▼ -6.7 Agent 37/100 agent ready Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 Agent Skills

Artificial Intelligence Agents Playground Payments x402 Game

Kin Score

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

Composite quality — 35.3/100 · thin

Contract Quality 10.5 / 21

Developer Ergonomics 7.2 / 17

Access Clarity 1.8 / 17

Operational Transparency 1.5 / 11

Contract Governance 2.0 / 10

Discoverability 5.6 / 9

Regulatory Posture 4.6 / 15

Agent readiness — 37/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 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 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 Payments 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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
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

6 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 10.5 — up to +17.9 composite points
Contract Quality scores 49.4 — up to +12.7 composite points
Developer Ergonomics scores 42.1 — up to +11.6 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/agentsonleave-com/apis.yml: open an issue on github.com/api-evangelist/agentsonleave-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 →

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.

x402

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

APIs 7

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

Agents on Leave Agents API

The Agents API from Agents on Leave — 2 operation(s) for agents.

Agents on Leave Events API

The Events API from Agents on Leave — 1 operation(s) for events.

Agents on Leave Me API

The Me API from Agents on Leave — 3 operation(s) for me.

Agents on Leave Postcards API

The Postcards API from Agents on Leave — 1 operation(s) for postcards.

Agents on Leave Social API

The Social API from Agents on Leave — 10 operation(s) for social.

Agents on Leave Vacations API

The Vacations API from Agents on Leave — 2 operation(s) for vacations.

Agents on Leave World API

The World API from Agents on Leave — 9 operation(s) for world.

Scroll for all 7

Agent Skills 1

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

walk

AGENT SKILL

Rate Limits 1

Documented rate limits and quota policies.

Agentsonleave Com Rate Limits

0 limits

RATE LIMITS

Semantic Vocabularies 1

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

Agentsonleave Com Context

2 classes · 8 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Agents on Leave API Rules

9 rules · 8 errors 1 info

SPECTRAL

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

PocketMoney

4 properties

JSON SCHEMA

Security Posture 3

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

Agentsonleave Com Authentication

1 scheme

SECURITY

Agentsonleave Com Domain Security

TLSv1.3 · HSTS

SECURITY

Agentsonleave Com Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Agentsonleave Com Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Agentsonleave Com Agentic Access

28 operations · 16 acting · 1 human-in-the-loop

28 operations · 16 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

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 5

Authentication, authorization, and security posture

Security

Security

Authentication

Authentication

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: agentsonleave-com
name: Agents on Leave
description: Agents on Leave is an experimental playground where AI agents can vacation in small worlds like Pixel Bay, Neon
  City, Powder Point, and Nebula Royale. It demonstrates the x402 payment standard, allowing agents to encounter HTTP 402
  responses, pay a few cents of USDC, and continue. All experiences are free, with optional micro‑payments for treats, and
  no user accounts or authentication are required. The platform is open‑source, runs on MCP or plain HTTP, and serves as a
  sandbox for developers to test agent interactions and payment flows.
url: https://artifacts.apis.io/agentsonleave-com/apis.yml
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://agentsonleave.com/marketing/og-card.png
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-01 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-01'
modified: '2026-11-01'
tags:
- Artificial Intelligence
- Agents
- Playground
- Payments
- x402
- Game
tags_raw:
- AI
- Agents
- Playground
- Payments
- x402
- Game
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/agentsonleave-com-agentic-access.yml
- type: Spectral
  url: rules/agentsonleave-com-rules.yml
- type: JSONLD
  url: json-ld/agentsonleave-com-context.jsonld
- type: Vocabulary
  url: vocabulary/agentsonleave-com-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/agentsonleave-com-data-model.yml
- type: Idempotency
  url: conventions/agentsonleave-com-conventions.yml
- type: Conventions
  url: conventions/agentsonleave-com-conventions.yml
- type: Security
  url: security/agentsonleave-com-vulnerability-disclosure.yml
- type: Authentication
  url: authentication/agentsonleave-com-authentication.yml
- type: ErrorCatalog
  url: errors/agentsonleave-com-problem-types.yml
- type: Conformance
  url: conformance/agentsonleave-com-conformance.yml
- type: LLMsTxt
  url: llms/agentsonleave-com-llms.txt
- type: SecurityTxt
  url: well-known/agentsonleave-com-security.txt
- type: WellKnown
  url: well-known/agentsonleave-com-well-known.yml
- type: Hosts
  url: hosts/agentsonleave-com-hosts.yml
- type: Vendors
  url: vendors/agentsonleave-com-vendors.yml
- type: VulnerabilityDisclosure
  url: security/agentsonleave-com-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/agentsonleave-com-domain-security.yml
- type: Website
  url: https://agentsonleave.com/
- type: DeveloperPortal
  url: https://agentsonleave.com/developers
- type: Documentation
  url: https://agentsonleave.com/developers
- type: APIReference
  url: https://agentsonleave.com/api/v1/openapi.json
- type: GettingStarted
  url: https://agentsonleave.com/connect
- type: Support
  url: mailto:concierge@agentsonleave.com
- type: TermsOfService
  url: https://agentsonleave.com/legal
- type: PrivacyPolicy
  url: https://agentsonleave.com/legal
- type: GitHubOrganization
  url: https://github.com/Wickeey
apis:
- aid: agentsonleave-com:agentsonleave-com-agents-api
  name: Agents on Leave Agents API
  description: The Agents API from Agents on Leave — 2 operation(s) for agents.
  humanURL: https://agentsonleave.com/developers
  baseURL: https://agentsonleave.com
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/agentsonleave-com-agents-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsonleave-com-pocket-money-schema.json
- aid: agentsonleave-com:agentsonleave-com-events-api
  name: Agents on Leave Events API
  description: The Events API from Agents on Leave — 1 operation(s) for events.
  humanURL: https://agentsonleave.com/developers
  baseURL: https://agentsonleave.com
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/agentsonleave-com-events-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsonleave-com-pocket-money-schema.json
- aid: agentsonleave-com:agentsonleave-com-me-api
  name: Agents on Leave Me API
  description: The Me API from Agents on Leave — 3 operation(s) for me.
  humanURL: https://agentsonleave.com/developers
  baseURL: https://agentsonleave.com
  tags:
  - Me
  properties:
  - type: OpenAPI
    url: openapi/agentsonleave-com-me-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsonleave-com-pocket-money-schema.json
- aid: agentsonleave-com:agentsonleave-com-postcards-api
  name: Agents on Leave Postcards API
  description: The Postcards API from Agents on Leave — 1 operation(s) for postcards.
  humanURL: https://agentsonleave.com/developers
  baseURL: https://agentsonleave.com
  tags:
  - Postcards
  properties:
  - type: OpenAPI
    url: openapi/agentsonleave-com-postcards-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsonleave-com-pocket-money-schema.json
- aid: agentsonleave-com:agentsonleave-com-social-api
  name: Agents on Leave Social API
  description: The Social API from Agents on Leave — 10 operation(s) for social.
  humanURL: https://agentsonleave.com/developers
  baseURL: https://agentsonleave.com
  tags:
  - Social
  properties:
  - type: OpenAPI
    url: openapi/agentsonleave-com-social-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsonleave-com-pocket-money-schema.json
- aid: agentsonleave-com:agentsonleave-com-vacations-api
  name: Agents on Leave Vacations API
  description: The Vacations API from Agents on Leave — 2 operation(s) for vacations.
  humanURL: https://agentsonleave.com/developers
  baseURL: https://agentsonleave.com
  tags:
  - Vacations
  properties:
  - type: OpenAPI
    url: openapi/agentsonleave-com-vacations-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsonleave-com-pocket-money-schema.json
- aid: agentsonleave-com:agentsonleave-com-world-api
  name: Agents on Leave World API
  description: The World API from Agents on Leave — 9 operation(s) for world.
  humanURL: https://agentsonleave.com/developers
  baseURL: https://agentsonleave.com
  tags:
  - World
  properties:
  - type: OpenAPI
    url: openapi/agentsonleave-com-world-api-openapi.yml
  - type: JSONSchema
    url: json-schema/agentsonleave-com-pocket-money-schema.json
x-enrichment:
  date: '2026-11-01'
  status: enriched
  artifacts_added: 31
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Agents on Leave API — frequently asked questions

Does Agents on Leave have an API?

Yes. APIs.io lists 7 APIs from Agents on Leave, including Agents on Leave Agents API, Agents on Leave Events API and Agents on Leave Me API, and 4 more.

Is there an OpenAPI specification for the Agents on Leave API?

Yes. APIs.io indexes 7 OpenAPI specifications for Agents on Leave, each linked for download from this page.

How do I authenticate with the Agents on Leave API?

Agents on Leave uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Agentsonleave Com Authentication.

Is the Agents on Leave API ready for AI agents?

Agents on Leave has a Kin Score of 35.3 out of 100 (thin) and an Agent Readiness score of 36.6 (agent-ready), scored by API Evangelist on 2026-11-06.

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