MCP.Market

API Contract Validator MCP server

online · 100% uptime
by lazymac2x·io.github.lazymac2x/api-contract-validator·v1.0.0
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Cloudflare Workers MCP server: api-contract-validator

B79/100grade B
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Safety scan
B79/100

full report

Adoption
New

0 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

API Contract Validator tools (5)

write = sends, deletes, buys or posts
  • check_breaking_changesFree

    Compare two OpenAPI spec versions to detect breaking changes: removed paths/operations, new required parameters, removed response codes, operationId renames.

  • diff_request_responseFree

    Compare a real HTTP request/response against an OpenAPI spec contract. Returns per-field violations.

  • generate_mock_from_specFree

    Generate mock response data from an OpenAPI spec. Uses examples, defaults, formats, and type heuristics.

  • lint_api_schemaFree

    Lint an API spec for quality and best practice compliance. Rules: operation-id-kebab-case, response-success-required, tags-defined, no-empty-description, security-defined.

  • validate_openapi_specFree

    Validate an OpenAPI 3.x or AsyncAPI spec JSON. Returns structural errors, missing required fields, and warnings.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 145ms20/20
  • Tool poisoning5 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 169 days ago8/15
  • Maintainer identityregistry namespace matches repository owner6/10
Overall 79/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How API Contract Validator compares

Against every graded Developer tools MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
79/100
higher than 53% of 1,119 Developer tools servers
Tools
5
the typical Developer tools server has 7
Tools that change things
0%
typical: 5%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Developer tools server answers 100%
Response time
22 ms
faster than 96% of 443 Developer tools servers

What its tools let an agent do: 4 read · 1 create

Install API Contract Validator in Claude Code, Cursor or VS Code

claude mcp add --transport http api-contract-validator https://api.lazy-mac.com/api-contract-validator/mcp
Add to Cursor

API Contract Validator: common questions

Is API Contract Validator MCP server safe?
Mostly: it is graded B (79/100). Read the API Contract Validator safety report
How do I install API Contract Validator?
It runs remotely at api.lazy-mac.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does API Contract Validator need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is API Contract Validator maintained?
The last commit was 207 days ago (2026-04-11). The latest release is v1.0.0.
Is API Contract Validator up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of API Contract Validator?
Servers from other publishers that do the same job: Scrapling MCP Server, Porkbun (official) MCP server and MCP server.
How does API Contract Validator compare with other Developer tools MCP servers?
safety score 79/100 (higher than 53% of 1,119 Developer tools servers); tools 5 (the typical Developer tools server has 7); tools that change things 0% (typical: 5%. Fewer write tools means less an agent can break). Full comparison.

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