Apidefects
Actively maintained
≈ 2visits/mo
Little sign of use · estimate, read Oct 13, 2026
- For
- developers and teams checking whether an API or MCP server is live before adopting it
- Activity
- Actively maintainedsite updated 5 days ago
- Runs as
- API
- Used for
- check an MCP server or API before installing it
- find MCP servers whose packages cannot be installed
- find API specifications pointing at hosts that no longer exist
- Has an MCP server (1 in the registry)public registry →
- Publishes llms.txt, a file written for AI assistantsapidefects.com ↗
Price not read
- MCP servercom.apidefects/errataverified in the MCP registry
- Stateanswers, 1 toolschecked 2026-10-21
- Address to connectapidefects.com/mcp
- API docsapidefects.com/api.htmlthe vendor's page ↗
- MCP docsapidefects.com/which-mcp-servers-are-dead.htmlthe vendor's page ↗
This card as JSON, for your agent →
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
Figure and bar: visits/mo, estimate · year: online since
- #1
Agent Nexus (agentnexus.app)MCP · open
Catalogues APIs, MCP servers and CLIs for agents, health-checks them continuously, and serves them via a searchable registry API.
1ActiveFrom $29/mo
Not it? Say what you need
betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use Apidefects for?
Sign in to leave a noteWhat is Apidefects?
Checks public OpenAPI documents and MCP servers for dead hosts, contradictory specs and unverified auth, then publishes the recheck results. It is listed in the Atlas under Documents.
Who is Apidefects for?
developers and teams checking whether an API or MCP server is live before adopting it
Do people use Apidefects?
Little sign of use: ≈ 2 visits/mo · estimate, 2026-10.
Is Apidefects still maintained?
Actively maintained: site updated 5 days ago.
What are alternatives to Apidefects?
In Documents, by use: Agent Nexus (agentnexus.app).
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
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Before we count this visit
Analytics and ad measurement tell us which pages and which of our ads do their job: Google Analytics and Google Ads, the Meta pixel, Yandex Metrica, and one first-party id of our own. Nothing is stored until you answer, and declining changes nothing about the site.