WebRef (paid)

dev.workers.johnaio281.webref/webrefVersion 1.8.0

Web standards and time reference for agents: HTTP codes, retries, deadlines. Paid via x402.

Status

Responds528 msNov 14, 2026, 14:28 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:28 UTC
Latency: 528 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://webref.johnaio281.workers.dev/mcpResponds528 msNov 14, 2026, 14:28 UTC

No sign-in

Claude Code

claude mcp add --transport http webref https://webref.johnaio281.workers.dev/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: webref
Remote MCP server URL: https://webref.johnaio281.workers.dev/mcp

Cursor

{
  "mcpServers": {
    "webref": {
      "url": "https://webref.johnaio281.workers.dev/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"webref","type":"http","url":"https://webref.johnaio281.workers.dev/mcp"}'

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Tools

14 tools

Tools of WebRef (paid)
	Description		Read-only	Idempotent	Open world
`add_duration`Add a duration to an instant and get the result, in UTC and in Tehran local time. Use it for a TTL, a lock expiry, or a token lifetime. ($0.003 per call)	Add a duration to an instant and get the result, in UTC and in Tehran local time. Use it for a TTL, a lock expiry, or a token lifetime. ($0.003 per call)	Not declared	Not declared	Not declared	Not declared
`business_days_between`Count the business days between two dates, excluding weekends. Use it to turn a calendar deadline into a working-day deadline. Public holidays are not excluded, so the count is an upper bound. ($0.005 per call)	Count the business days between two dates, excluding weekends. Use it to turn a calendar deadline into a working-day deadline. Public holidays are not excluded, so the count is an upper bound. ($0.005 per call)	Not declared	Not declared	Not declared	Not declared
`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)	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)	Not declared	Not declared	Not declared	Not declared
`convert_duration`Convert a duration between units and get it in plain language. Use it to express a timeout in the unit the caller asked for, or to check whether a limit is seconds, minutes or milliseconds. ($0.003 per call)	Convert a duration between units and get it in plain language. Use it to express a timeout in the unit the caller asked for, or to check whether a limit is seconds, minutes or milliseconds. ($0.003 per call)	Not declared	Not declared	Not declared	Not declared
`describe_instant`Describe an instant: its date, weekday and time in UTC and in Tehran local time (UTC+03:30), plus the Unix timestamp. Use it when a response carries a timestamp and the local date matters. ($0.003 per call)	Describe an instant: its date, weekday and time in UTC and in Tehran local time (UTC+03:30), plus the Unix timestamp. Use it when a response carries a timestamp and the local date matters. ($0.003 per call)	Not declared	Not declared	Not declared	Not declared
`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)	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)	Not declared	Not declared	Not declared	Not declared
`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)	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)	Not declared	Not declared	Not declared	Not declared
`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)	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)	Not declared	Not declared	Not declared	Not declared
`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)	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)	Not declared	Not declared	Not declared	Not declared
`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)	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)	Not declared	Not declared	Not declared	Not declared
`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)	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)	Not declared	Not declared	Not declared	Not declared
`time_until`How much time is between two instants: the direction, the total in every unit, and a day/hour/minute/second breakdown. Use it to compute a retry delay, a rate-limit reset, or whether a deadline has passed. ($0.003 per call)	How much time is between two instants: the direction, the total in every unit, and a day/hour/minute/second breakdown. Use it to compute a retry delay, a rate-limit reset, or whether a deadline has passed. ($0.003 per call)	Not declared	Not declared	Not declared	Not declared
`unix_time`Convert between a date and a Unix timestamp, in either direction. Use it when a payload carries one and the other is needed. ($0.003 per call)	Convert between a date and a Unix timestamp, in either direction. Use it when a payload carries one and the other is needed. ($0.003 per call)	Not declared	Not declared	Not declared	Not declared
`weekday_of`Which day of the week a date falls on, and whether it is a business day. Use it before scheduling work or setting a deadline that lands on a weekend. ($0.003 per call)	Which day of the week a date falls on, and whether it is a business day. Use it before scheduling work or setting a deadline that lands on a weekend. ($0.003 per call)	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Oct 29, 2026
Updated: Oct 29, 2026
Website: https://webref.johnaio281.workers.dev/⁠ (opens in a new tab)
Repository: https://github.com/johnaio281/webref⁠ (opens in a new tab)
Categories: Uncategorized
GDPR: Not declared

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