General Tools

commoninstant.org

Provides tools for converting and managing time values across different encodings, timescales, and timezones.

1 endpoint10 known toolsFirst detected August 8, 2026Last detected August 8, 2026

ENDPOINT 1

https://commoninstant.org/mcp

No auth detected

MCP server metadata

Name: ctcl
Version: v1

Capabilities

tools.listChanged

Server instructions

CTCL (Common Temporal Coordinate Layer) remote read/compute tools: reference-instant math, custom temporal systems, Temporal Groups, boundary inspection, semantic time resolution, constraint-based scheduling. Write/Trigger/WakeEvent/Agent-Wake capability lives only on the local Temporal Port desktop app's Local MCP server, not here (whitepaper §12.3). register_instant is the one write tool - it's the same operation POST /v1/instants already performs publicly.

Known tools 10

ctcl.now

Get the current verified reference instant across all supported encodings and timescales.

Inferred read-only

ctcl.convert

Convert a time value across encodings, timescales, and timezones (§7).

Inferred read-only

ctcl.register_instant

Inferred read-only

ctcl.get_instant

Retrieve a previously-registered instant by id.

Inferred read-only

ctcl.list_systems

List all custom temporal system ids.

Inferred read-only

ctcl.system_now

Evaluate a custom temporal system's current local time.

Inferred read-only

ctcl.expand_group

Project an instant across every member of a Temporal Group ("One Instant, Many Systems").

Inferred read-only

ctcl.inspect_boundary

Proactively check a local time or custom-system value for a DST gap/fold or a paused segment - never errors, returns status+safe instead.

Inferred read-only

ctcl.resolve_temporal_context

Resolve a place/timezone name or abbreviation to an IANA timezone id (best-effort; genuinely ambiguous input returns multiple candidates rather than guessing).

Inferred read-only

ctcl.plan_shared_instant

Score candidate instants in a time window against weighted scheduling constraints and return the best fit (demonstration-scope constraint solving, §7 - see GET /v1/planner/constraint-types for what's honestly supported).

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.ctcl]
url = "https://commoninstant.org/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "ctcl": {
      "type": "http",
      "url": "https://commoninstant.org/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: ctcl
Remote MCP URL: https://commoninstant.org/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "ctcl": {
      "url": "https://commoninstant.org/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "ctcl": {
      "type": "http",
      "url": "https://commoninstant.org/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "ctcl",
  "transport": "streamable-http",
  "url": "https://commoninstant.org/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Trust Data Available

BuiltWith Trust API v2 evidence for commoninstant.org was fetched 2026-08-24T00:25:38.784Z.

Trust status Neutral

commoninstant.org is assessed as Neutral: No suspicious signals found, but no strong positive signal either

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.