MCP server

WebRef (paid)

dev.workers.johnaio281.webref/webref

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

14

Token cost

About 2,074 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

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

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.webref]
url = "https://webref.johnaio281.workers.dev/mcp"

Gemini CLI

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

Cursor

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

VS Code

{"servers":{"webref":{"type":"http","url":"https://webref.johnaio281.workers.dev/mcp"}}}

Antigravity

agy mcp add webref https://webref.johnaio281.workers.dev/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"webref","server_url":"https://webref.johnaio281.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"webref","server_url":"https://webref.johnaio281.workers.dev/mcp"}

Tools

• add_duration ~174 tokens
  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)
• business_days_between ~146 tokens
  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)
• content_type_advice ~154 tokens
  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)
• convert_duration ~208 tokens
  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)
• describe_instant ~166 tokens
  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)
• http_method ~104 tokens
  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)
• http_status ~166 tokens
  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)
• list_mime_types ~134 tokens
  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)
• mime_type ~123 tokens
  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)
• retry_advice ~139 tokens
  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)
• status_for_situation ~130 tokens
  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)
• time_until ~154 tokens
  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)
• unix_time ~125 tokens
  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)
• weekday_of ~151 tokens
  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)

Browse

• Calendars
• Booking and scheduling

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