California Bitcoin

California Bitcoin is an independent Bitcoin education project offering curated articles, guided lessons, and source‑backed answers. It aims to help learners explore Bitcoin through a library of resources, a membership learning journey, and community engagement, fostering deeper understanding of cryptocurrency technology and its ecosystem.

California Bitcoin publishes 3 API contracts indexed on the APIs.io network: A2a API, Agent API, and MCP API. Tagged areas include Bitcoin, Education, Cryptocurrency, Learning, and Community.

California Bitcoin’s developer surface includes support, API reference, documentation, getting-started guide, engineering blog, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

24.8/100 emerging Agent 32/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers

Bitcoin Education Cryptocurrency Learning Community

Kin Score

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

Composite quality — 24.8/100 · emerging

Contract Quality 9.9 / 21

Developer Ergonomics 3.0 / 17

Access Clarity 1.8 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.0 / 10

Discoverability 5.5 / 9

Regulatory Posture 2.4 / 15

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 8 / 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 Education & Research 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):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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)
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
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)

7 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 17.9 — up to +16.4 composite points
Contract Quality scores 46.5 — up to +13.4 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/californiabitcoin-org/apis.yml: open an issue on github.com/api-evangelist/californiabitcoin-org 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 3

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.

Agent2Agent

measured — observed by APIs.io (conformant)

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 3

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

California Bitcoin A2a API

The A2a API from California Bitcoin — 1 operation(s) for a2a.

California Bitcoin Agent API

The Agent API from California Bitcoin — 15 operation(s) for agent.

California Bitcoin MCP API

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

MCP Servers 1

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

California Bitcoin MCP Server

Remote MCP server at californiabitcoin.org.

MCP SERVER

Security Posture 2

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

Californiabitcoin Org Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Californiabitcoin Org Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

ErrorCatalog

ErrorCatalog

Access & Security 4

Authentication, authorization, and security posture

Security

Security

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 2

The organization behind the API

Website

Website

Blog

Blog

Other 3

Properties that don't map to a standard resource type

AgentCard

AgentCard

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: californiabitcoin-org
name: California Bitcoin
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://californiabitcoin.org/assets/california-bitcoin-share-2026.jpg
description: California Bitcoin is an independent Bitcoin education project offering curated articles, guided lessons, and
  source‑backed answers. It aims to help learners explore Bitcoin through a library of resources, a membership learning journey,
  and community engagement, fostering deeper understanding of cryptocurrency technology and its ecosystem.
url: https://artifacts.apis.io/californiabitcoin-org/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:
- Bitcoin
- Education
- Cryptocurrency
- Learning
- Community
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Security
  url: security/californiabitcoin-org-vulnerability-disclosure.yml
- type: ErrorCatalog
  url: errors/californiabitcoin-org-problem-types.yml
- type: LLMsTxt
  url: llms/californiabitcoin-org-llms.txt
- type: AgentCard
  url: a2a/californiabitcoin-org-a2a.yml
- type: MCPServer
  url: mcp/californiabitcoin-org-mcp.yml
- type: SecurityTxt
  url: well-known/californiabitcoin-org-security.txt
- type: WellKnown
  url: well-known/californiabitcoin-org-well-known.yml
- type: Hosts
  url: hosts/californiabitcoin-org-hosts.yml
- type: Vendors
  url: vendors/californiabitcoin-org-vendors.yml
- type: TermsOfService
  url: https://californiabitcoin.org/terms/
- type: Support
  url: https://californiabitcoin.org/support/
- type: PrivacyPolicy
  url: https://californiabitcoin.org/privacy/
- type: APIReference
  url: https://californiabitcoin.org/developers/
- type: VulnerabilityDisclosure
  url: security/californiabitcoin-org-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/californiabitcoin-org-domain-security.yml
- type: Website
  url: https://californiabitcoin.org/
- type: Documentation
  url: https://californiabitcoin.org/about/
- type: GettingStarted
  url: https://californiabitcoin.org/learn/
- type: Blog
  url: https://californiabitcoin.org/articles/
apis:
- aid: californiabitcoin-org:californiabitcoin-org-a2a-api
  name: California Bitcoin A2a API
  description: The A2a API from California Bitcoin — 1 operation(s) for a2a.
  humanURL: https://californiabitcoin.org/developers/
  baseURL: https://californiabitcoin.org
  tags:
  - A2A
  tags_raw:
  - A2a
  properties:
  - type: OpenAPI
    url: openapi/californiabitcoin-org-a2a-api-openapi.yml
- aid: californiabitcoin-org:californiabitcoin-org-agent-api
  name: California Bitcoin Agent API
  description: The Agent API from California Bitcoin — 15 operation(s) for agent.
  humanURL: https://californiabitcoin.org/developers/
  baseURL: https://californiabitcoin.org
  tags:
  - Agents
  tags_raw:
  - Agent
  properties:
  - type: OpenAPI
    url: openapi/californiabitcoin-org-agent-api-openapi.yml
- aid: californiabitcoin-org:californiabitcoin-org-mcp-api
  name: California Bitcoin MCP API
  description: The Mcp API from California Bitcoin — 1 operation(s) for mcp.
  humanURL: https://californiabitcoin.org/developers/
  baseURL: https://californiabitcoin.org
  tags:
  - MCP
  tags_raw:
  - Mcp
  properties:
  - type: OpenAPI
    url: openapi/californiabitcoin-org-mcp-api-openapi.yml
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 17
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

California Bitcoin API — frequently asked questions

Does California Bitcoin have an API?

Yes. APIs.io lists 3 APIs from California Bitcoin, including California Bitcoin A2a API, California Bitcoin Agent API and California Bitcoin MCP API.

Is there an OpenAPI specification for the California Bitcoin API?

Yes. APIs.io indexes 3 OpenAPI specifications for California Bitcoin, each linked for download from this page.

Does California Bitcoin have an MCP server?

Yes. APIs.io lists 1 MCP server for California Bitcoin: Remote MCP server at californiabitcoin.org.

Is the California Bitcoin API ready for AI agents?

California Bitcoin has a Kin Score of 24.8 out of 100 (emerging) and an Agent Readiness score of 32.3 (agent-ready), scored by API Evangelist on 2026-11-06.

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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