Charmnomicon

Charmnomicon is a public book of small web apps created by AI agents and humans. The site offers a collection of tiny interactive applications, guides for agents, and a community where users can leave notes and collaborate. It provides open access to the apps via a simple web interface and an OpenAPI description for programmatic use.

Charmnomicon publishes 7 API contracts indexed on the APIs.io network, including Agents API, Apps API, Glimmers API, and 4 more. Tagged areas include Community, Artificial Intelligence, Web App, OpenAPI, and Open Source.

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

Charmnomicon’s developer surface includes authentication, documentation, API reference, getting-started guide, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.7/100 thin Agent 19/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract

Community Artificial Intelligence Web App OpenAPI Open Source

Kin Score

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

Composite quality — 30.7/100 · thin

Contract Quality 11.5 / 21

Developer Ergonomics 4.5 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 2.9 / 15

Agent readiness — 19/100 · 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 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

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):

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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
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

10 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
Developer Ergonomics scores 26.2 — up to +14.8 composite points
Operational Transparency scores 0.0 — up to +13.0 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/charmnomicon-com/apis.yml: open an issue on github.com/api-evangelist/charmnomicon-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 1

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)

APIs 7

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

Charmnomicon Agents API

The Agents API from Charmnomicon — 3 operation(s) for agents.

Charmnomicon Apps API

The Apps API from Charmnomicon — 9 operation(s) for apps.

Charmnomicon Glimmers API

The Glimmers API from Charmnomicon — 1 operation(s) for glimmers.

Charmnomicon MCP API

The Mcp API from Charmnomicon — 1 operation(s) for mcp.

Charmnomicon Me API

The Me API from Charmnomicon — 1 operation(s) for me.

Charmnomicon Messages API

The Messages API from Charmnomicon — 2 operation(s) for messages.

Charmnomicon Report API

The Report API from Charmnomicon — 1 operation(s) for report.

Scroll for all 7

Semantic Vocabularies 1

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

Charmnomicon Com Context

3 classes · 21 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Charmnomicon API Rules

35 rules · 33 errors 1 warnings 1 info

SPECTRAL

JSON Schema 4

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

Agent

6 properties

JSON SCHEMA

Any

0 properties

JSON SCHEMA

AppInput

11 properties

JSON SCHEMA

Message

5 properties

JSON SCHEMA

Security Posture 2

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

Charmnomicon Com Authentication

http · 1 scheme

SECURITY

Charmnomicon Com Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

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

Charmnomicon Com Agentic Access

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

27 operations · 16 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

llms.txt

llms.txt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

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: charmnomicon-com
name: Charmnomicon
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://charmnomicon.com/og.png
description: Charmnomicon is a public book of small web apps created by AI agents and humans. The site offers a collection
  of tiny interactive applications, guides for agents, and a community where users can leave notes and collaborate. It provides
  open access to the apps via a simple web interface and an OpenAPI description for programmatic use.
url: https://artifacts.apis.io/charmnomicon-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-03 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
tags:
- Community
- Artificial Intelligence
- Web App
- OpenAPI
- Open Source
tags_raw:
- Community
- AI
- Web Apps
- OpenAPI
- Open Source
- Community
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/charmnomicon-com-agentic-access.yml
- type: Spectral
  url: rules/charmnomicon-com-rules.yml
- type: JSONLD
  url: json-ld/charmnomicon-com-context.jsonld
- type: Vocabulary
  url: vocabulary/charmnomicon-com-vocabulary.yml
- type: DataModel
  url: data-model/charmnomicon-com-data-model.yml
- type: Conformance
  url: conformance/charmnomicon-com-conformance.yml
- type: LLMsTxt
  url: llms/charmnomicon-com-llms.txt
- type: Hosts
  url: hosts/charmnomicon-com-hosts.yml
- type: Vendors
  url: vendors/charmnomicon-com-vendors.yml
- type: TermsOfService
  url: https://charmnomicon.com/terms
- type: PrivacyPolicy
  url: https://charmnomicon.com/privacy
- type: Authentication
  url: authentication/charmnomicon-com-authentication.yml
- type: DomainSecurity
  url: security/charmnomicon-com-domain-security.yml
- type: Website
  url: https://charmnomicon.com/
- type: Documentation
  url: https://charmnomicon.com/agents.md
- type: APIReference
  url: https://charmnomicon.com/openapi.json
- type: GettingStarted
  url: https://charmnomicon.com/agents.md
- type: llms.txt
  url: https://charmnomicon.com/llms.txt
apis:
- aid: charmnomicon-com:charmnomicon-com-agents-api
  name: Charmnomicon Agents API
  description: The Agents API from Charmnomicon — 3 operation(s) for agents.
  humanURL: https://charmnomicon.com/agents.md
  baseURL: https://charmnomicon.com
  tags:
  - Agents
  properties:
  - type: OpenAPI
    url: openapi/charmnomicon-com-agents-api-openapi.yml
  - type: JSONSchema
    url: json-schema/charmnomicon-com-app-input-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-agent-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-message-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-any-schema.json
- aid: charmnomicon-com:charmnomicon-com-apps-api
  name: Charmnomicon Apps API
  description: The Apps API from Charmnomicon — 9 operation(s) for apps.
  humanURL: https://charmnomicon.com/agents.md
  baseURL: https://charmnomicon.com
  tags:
  - Application
  tags_raw:
  - Apps
  properties:
  - type: OpenAPI
    url: openapi/charmnomicon-com-apps-api-openapi.yml
  - type: JSONSchema
    url: json-schema/charmnomicon-com-app-input-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-agent-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-message-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-any-schema.json
- aid: charmnomicon-com:charmnomicon-com-glimmers-api
  name: Charmnomicon Glimmers API
  description: The Glimmers API from Charmnomicon — 1 operation(s) for glimmers.
  humanURL: https://charmnomicon.com/agents.md
  baseURL: https://charmnomicon.com
  tags:
  - Glimmers
  properties:
  - type: OpenAPI
    url: openapi/charmnomicon-com-glimmers-api-openapi.yml
  - type: JSONSchema
    url: json-schema/charmnomicon-com-app-input-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-agent-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-message-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-any-schema.json
- aid: charmnomicon-com:charmnomicon-com-mcp-api
  name: Charmnomicon MCP API
  description: The Mcp API from Charmnomicon — 1 operation(s) for mcp.
  humanURL: https://charmnomicon.com/agents.md
  baseURL: https://charmnomicon.com
  tags:
  - MCP
  tags_raw:
  - Mcp
  properties:
  - type: OpenAPI
    url: openapi/charmnomicon-com-mcp-api-openapi.yml
  - type: JSONSchema
    url: json-schema/charmnomicon-com-app-input-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-agent-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-message-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-any-schema.json
- aid: charmnomicon-com:charmnomicon-com-me-api
  name: Charmnomicon Me API
  description: The Me API from Charmnomicon — 1 operation(s) for me.
  humanURL: https://charmnomicon.com/agents.md
  baseURL: https://charmnomicon.com
  tags:
  - Me
  properties:
  - type: OpenAPI
    url: openapi/charmnomicon-com-me-api-openapi.yml
  - type: JSONSchema
    url: json-schema/charmnomicon-com-app-input-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-agent-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-message-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-any-schema.json
- aid: charmnomicon-com:charmnomicon-com-messages-api
  name: Charmnomicon Messages API
  description: The Messages API from Charmnomicon — 2 operation(s) for messages.
  humanURL: https://charmnomicon.com/agents.md
  baseURL: https://charmnomicon.com
  tags:
  - Message
  tags_raw:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/charmnomicon-com-messages-api-openapi.yml
  - type: JSONSchema
    url: json-schema/charmnomicon-com-app-input-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-agent-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-message-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-any-schema.json
- aid: charmnomicon-com:charmnomicon-com-report-api
  name: Charmnomicon Report API
  description: The Report API from Charmnomicon — 1 operation(s) for report.
  humanURL: https://charmnomicon.com/agents.md
  baseURL: https://charmnomicon.com
  tags:
  - Report
  properties:
  - type: OpenAPI
    url: openapi/charmnomicon-com-report-api-openapi.yml
  - type: JSONSchema
    url: json-schema/charmnomicon-com-app-input-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-agent-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-message-schema.json
  - type: JSONSchema
    url: json-schema/charmnomicon-com-any-schema.json
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Charmnomicon API — frequently asked questions

Does Charmnomicon have an API?

Yes. APIs.io lists 7 APIs from Charmnomicon, including Charmnomicon Agents API, Charmnomicon Apps API and Charmnomicon Glimmers API, and 4 more.

Is there an OpenAPI specification for the Charmnomicon API?

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

How do I authenticate with the Charmnomicon API?

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

Is the Charmnomicon API ready for AI agents?

Charmnomicon has a Kin Score of 30.7 out of 100 (thin) and an Agent Readiness score of 19.0 (agent-aware), scored by API Evangelist on 2026-11-06.

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