WebRef (paid)
Web standards reference for agents: HTTP status codes, MIME types, methods. Paid per call via x402.
What it does
WebRef (paid) is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.
No capability identified yet from its description.
Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence) and are not a test of the tool.
At a glance
How to connect
As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 2h ago (live check)Hosted endpoint
https://webref.johnaio281.workers.dev/mcpstreamable-http
In Claude Code: claude mcp add --transport http webref-paid https://webref.johnaio281.workers.dev/mcp
MCP settings (Claude Desktop, Cursor and other MCP clients)
{
"mcpServers": {
"webref-paid": {
"url": "https://webref.johnaio281.workers.dev/mcp"
}
}
}Live check
Electra Index connected to the hosted endpoint 2h agoONLINE WebRef (paid) answered an MCP connection on 21 Oct 2026 and introduced itself as webref 1.0.0 (MCP protocol 2025-06-18).
7 tools offered to AI assistants
http_status· Look up an HTTP status code: what it means, what the client must do, whether it is retryable, whether it is safe to replay, the defining RFC and the common causes. ($0.003 per call)status_for_situation· Find the HTTP status code that matches a described situation, when the code is not known in advance — for example 'the caller is being rate limited' or 'upstream returned garbage'. ($0.005 per call)retry_advice· Decide how a client should react to a status code: retry with backoff, check the outcome before retrying, or do not retry. Includes a suggested backoff schedule. ($0.005 per call)mime_type· Look up a MIME type by full type or by file extension: the top-level type, what it is for, and the usual file extension. ($0.003 per call)list_mime_types· List or search MIME types by top-level type or by keyword, for example image types or anything to do with calendars. ($0.003 per call)content_type_advice· Check whether a Content-Type header matches what an endpoint kind expects, and say what to send instead when it does not. ($0.003 per call)http_method· Describe an HTTP method: whether it is safe, whether it is idempotent, whether it carries a body, and what it is for. ($0.003 per call)
What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method
Facts & evidence
Each fact shows where it was seen and when.| Fact | Value | Evidence | Source | Last confirmed |
|---|---|---|---|---|
| Version | 1.1.0 | DECLARED | SRC-001 Official MCP Registry | just now |
| Hosted endpoint | https://webref.johnaio281.workers.dev/mcp | DECLARED | SRC-001 Official MCP Registry | just now |
| Local install (package) | no | DECLARED | SRC-001 Official MCP Registry | just now |
| Remote access (hosted) | yes | DECLARED | SRC-001 Official MCP Registry | just now |
| Website | https://webref.johnaio281.workers.dev/ | DECLARED | SRC-001 Official MCP Registry | just now |
| Repository | https://github.com/johnaio281/webref | DECLARED | SRC-001 Official MCP Registry | just now |
| Registry status | active | DECLARED | SRC-001 Official MCP Registry | just now |
| MCP server | yes | DECLARED | SRC-001 Official MCP Registry | just now |
Change history
- NEW21 Oct 2026first seen in the index
Is this page accurate?
Flag it and our robot re-checks the official source. Reports never change a score.Is WebRef (paid) still online?
Free alerts · no accountQuestions about WebRef (paid)
How do I connect WebRef (paid)?
Use the hosted endpoint https://webref.johnaio281.workers.dev/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.
What tools does WebRef (paid) offer?
When Electra Index connected on 21 Oct 2026, it listed 7 tools: http_status, status_for_situation, retry_advice, mime_type, list_mime_types, content_type_advice, http_method. The full list is in "Live check" above.
Is WebRef (paid) online?
Yes. Its hosted endpoint answered an MCP connection from Electra Index 2h ago.