Cyclesite

Cyclesite is the UK’s bike‑only online marketplace, founded in 2025, that connects private sellers and bike shops with buyers of used bicycles. It offers free frame‑number checks against a stolen‑bike registry, AI‑assisted valuations based on real UK market data, and a suite of tools for safe buying and selling. Operated by TPSTORES LIMITED, the platform emphasizes trust, safety, and community, providing guides, forums, and a feedback channel for cyclists across the UK.

Cyclesite publishes 2 API contracts indexed on the APIs.io network, including MCP API, and 1 more. Tagged areas include Bike Marketplace, Used Bikes, United Kingdom, Marketplace, and Community.

The Cyclesite catalog on APIs.io includes 1 Spectral governance ruleset.

Cyclesite’s developer surface includes support, engineering blog, API reference, documentation, pricing, and 23 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

42.9/100 developing Agent 38/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract

Bike MarketplaceUsed BikesUnited Kingdom Marketplace Community

Kin Score

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

Composite quality — 42.9/100 · developing

Contract Quality 9.5 / 21

Developer Ergonomics 5.7 / 17

Access Clarity 8.9 / 17

Operational Transparency 1.7 / 11

Contract Governance 2.2 / 10

Discoverability 5.8 / 9

Regulatory Posture 5.3 / 15

Agent readiness — 38/100 · 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 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 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 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 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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<a href="https://apis.io/providers/cyclesite-co-uk/"><img src="https://apis.io/badge/cyclesite-co-uk/card.svg" alt="Cyclesite on APIs.io — Kin Score by API Evangelist"></a>

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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)
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
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

5 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 44.7 — up to +13.8 composite points
Developer Ergonomics scores 33.3 — up to +13.3 composite points
Operational Transparency scores 15.8 — up to +10.9 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/cyclesite-co-uk/apis.yml: open an issue on github.com/api-evangelist/cyclesite-co-uk 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.

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

Cyclesite Public API

Public API for Cyclesite – used bicycle marketplace, no authentication required.

Cyclesite MCP API

The MCP API API from Cyclesite — 16 operation(s) for mcp api.

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Cyclesite API Rules

43 rules · 38 errors 3 warnings 2 info

SPECTRAL

Security Posture 2

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

Cyclesite Co Uk Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Cyclesite Co Uk Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Cyclesite Co Uk Agentic Access

16 operations · 2 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

ErrorCatalog

Conformance

Access & Security 7

Authentication, authorization, and security posture

Security

SecurityTxt

SecurityTxt

SecurityTxt

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Scroll for all 7

Operate 2

Status, limits, changes, and where to get help

Support

Support

Roadmap

Roadmap

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Newsroom

Newsroom

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: cyclesite-co-uk
name: Cyclesite
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://www.cyclesite.co.uk/og-image.png
description: Cyclesite is the UK’s bike‑only online marketplace, founded in 2025, that connects private sellers and bike shops
  with buyers of used bicycles. It offers free frame‑number checks against a stolen‑bike registry, AI‑assisted valuations
  based on real UK market data, and a suite of tools for safe buying and selling. Operated by TPSTORES LIMITED, the platform
  emphasizes trust, safety, and community, providing guides, forums, and a feedback channel for cyclists across the UK.
url: https://artifacts.apis.io/cyclesite-co-uk/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-04 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-04'
modified: '2026-11-04'
tags:
- Bike Marketplace
- Used Bikes
- United Kingdom
- Marketplace
- Community
tags_raw:
- Bike Marketplace
- Used Bikes
- UK
- Marketplace
- Community
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Security
  url: https://www.cyclesite.co.uk/security-policy
- type: AgenticAccess
  url: agentic-access/cyclesite-co-uk-agentic-access.yml
- type: Spectral
  url: rules/cyclesite-co-uk-rules.yml
- type: Vocabulary
  url: vocabulary/cyclesite-co-uk-vocabulary.yml
- type: ErrorCatalog
  url: errors/cyclesite-co-uk-problem-types.yml
- type: Conformance
  url: conformance/cyclesite-co-uk-conformance.yml
- type: LLMsTxt
  url: llms/cyclesite-co-uk-llms.txt
- type: SecurityTxt
  url: well-known/cyclesite-co-uk-security.txt
- type: SecurityTxt
  url: well-known/cyclesite-co-uk-cyclesite-security.txt
- type: SecurityTxt
  url: well-known/cyclesite-co-uk-api-security.txt
- type: WellKnown
  url: well-known/cyclesite-co-uk-well-known.yml
- type: Hosts
  url: hosts/cyclesite-co-uk-hosts.yml
- type: Vendors
  url: vendors/cyclesite-co-uk-vendors.yml
- type: TrustCenter
  url: https://www.cyclesite.co.uk/trust
- type: Support
  url: https://www.cyclesite.co.uk/help
- type: Roadmap
  url: https://www.cyclesite.co.uk/roadmap
- type: Newsroom
  url: https://www.cyclesite.co.uk/press/embeds
- type: Login
  url: https://www.cyclesite.co.uk/auth/sign-in
- type: DeveloperPortal
  url: https://www.cyclesite.co.uk/developers
- type: Blog
  url: https://www.cyclesite.co.uk/blog
- type: APIReference
  url: https://www.cyclesite.co.uk/llms-full.txt
- type: VulnerabilityDisclosure
  url: security/cyclesite-co-uk-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/cyclesite-co-uk-domain-security.yml
- type: Website
  url: https://cyclesite.co.uk/
- type: Documentation
  url: https://www.cyclesite.co.uk/about
- type: Pricing
  url: https://www.cyclesite.co.uk/sell-your-bike
- type: TermsOfService
  url: https://www.cyclesite.co.uk/legal/terms
- type: PrivacyPolicy
  url: https://www.cyclesite.co.uk/legal/privacy
apis:
- name: Cyclesite Public API
  description: Public API for Cyclesite – used bicycle marketplace, no authentication required.
  humanURL: https://www.cyclesite.co.uk/about
  baseURL: https://www.cyclesite.co.uk
  openAPI:
    url: openapi/cyclesite-co-uk-openapi.json
  aid: cyclesite-co-uk:cyclesite-public-api
- aid: cyclesite-co-uk:cyclesite-co-uk-mcp-api-api
  name: Cyclesite MCP API
  description: The MCP API API from Cyclesite — 16 operation(s) for mcp api.
  humanURL: https://www.cyclesite.co.uk/about
  baseURL: https://www.cyclesite.co.uk
  tags:
  - MCP API
  properties:
  - type: OpenAPI
    url: openapi/cyclesite-co-uk-mcp-api-api-openapi.yml
x-enrichment:
  date: '2026-11-04'
  status: enriched
  artifacts_added: 31
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Cyclesite API — frequently asked questions

Does Cyclesite have an API?

Yes. APIs.io lists 2 APIs from Cyclesite, including Cyclesite Public API and Cyclesite MCP API.

Is there an OpenAPI specification for the Cyclesite API?

Yes. APIs.io indexes 1 OpenAPI specification for Cyclesite, each linked for download from this page.

Is the Cyclesite API ready for AI agents?

Cyclesite has a Kin Score of 42.9 out of 100 (developing) and an Agent Readiness score of 38.4 (agent-ready), scored by API Evangelist on 2026-11-06.

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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.
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