MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Data access / search

MarketCheck API Docs

By marketcheck.com

MarketCheck API docs for coding assistants: search, endpoint reference, plans. Free, no auth.

WebsiteSearch & web dataProductivity & docs
Connect to MarketCheck API Docs
Checks passed
12 / 22

2 failed · 8 not measured

Median response
503 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
5

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
400
Publisher identityCan the publisher be traced to its source?
222

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 503 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-06-18, serverInfo.name MarketCheck Docs.

  • Pass
    Lists tools

    tools/list returned 5 tools.

  • Pass
    Current protocol

    Negotiated 2025-06-18. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 503 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 503 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    9 of 9 parameters have a description (100%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Fail
    Website matches publisher

    The website host does not match the reverse-domain namespace.

  • Fail
    Source repo linked

    No repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-09-10T14:44:32.622088Z, within 180 days.

  • Not measured
    Open-source licence

    No GitHub repository to ask about a licence.

Start using MarketCheck API Docs

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http marketcheck-api-docs https://developers.marketcheck.com/api/docs-mcp

Capabilities

Tools 5

get_doc_page

Fetch one full documentation page as Markdown, including resolved parameter tables and curl examples. Use a 'Page:' URL or path returned by search_docs or get_endpoint, e.g. '/docs/api/cars/inventory/inventory-search'. UK pages are under '/uk/docs/...'.

Discovered
get_endpoint

Exact reference for one REST endpoint: every query parameter (name, type, description, required, default), a real sample request, and a truncated real sample response. Use the path as shown by list_endpoints, e.g. '/v2/search/car/active'.

Discovered
get_plans_and_limits

Current published MarketCheck rate plans: per-call pricing, monthly quotas, and rate limits for a region, sourced from the live plan list (authoritative over docs). NA prices in USD, UK in GBP.

Discovered
list_endpoints

List every documented MarketCheck REST endpoint: method, path, one-line title, region, and docs URL (~73 endpoints across US/UK cars, dealers, VIN decode, history, valuations).

Discovered
search_docs

Semantic search over the complete MarketCheck API documentation, current rate plans, and API policies (2,000+ indexed sections). Returns the most relevant excerpts, each with its source page URL and endpoint. Use this first for any question about endpoints, parameters, authentication, errors, plans, or terms.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected503 ms5

Related servers

All alternatives

Same function and industry, ranked by checks passed then median latency.

Explore alternatives to MarketCheck API Docs