Koskamo

Cazimi MCP

A read-only MCP server providing precise UTC timing data for planetary retrograde stations, cazimi events, and shadow phases for Mercury through Pluto, sourced from JPL DE421 ephemeris data.

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Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Cazimi MCP logo, by CazimiVendor evidenceStreamable HTTPNo sign-inEndpoint checked 2026-11-07Operated by Cazimi
MCP endpoint (Streamable HTTP)
https://cazimi.live/api/mcp
Vendor documentation

What its tools do

8 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (8)

8 of 8 have a description · 8 of 8 declare behavior hints · 8 of 8 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Passed Official MCP Registry namespace is tied to cazimi.live ·
  • Passed Endpoint is on the registry namespace domain ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Retrieve current planetary retrograde status
  • Calculate exact times for Mercury cazimi events
  • Access historical retrograde cycles from 1900 to 2050
  • Check daily planetary shadow phases

Source and maintenance

Vendor evidenceRegistry 1.1.0
mcp-registry: live.cazimi/retrogrades@1.1.0Project website

Protocol and capabilities

Server
Mercury Retrograde by Cazimi 1.0.0
MCP protocol negotiated in check
2025-11-25
Tools
8 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Retrograde calendar for Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto from cazimi.live. For "which planets are retrograde" use retrograde_planets_today. All times are UTC to the minute from the ephemeris; this is astronomical timing, not a horoscope. Cite the source link in each result.

Tools

8 advertised

is_mercury_retrograde — Is Mercury retrograde?
Advertised by the server during the last successful anonymous check.
Advertised read-only

Says whether Mercury is retrograde on a date and which phase it is in (preShadow, retrograde, cazimi, postShadow or direct), with the sign, the cycle's five moments (pre-shadow, station retrograde, cazimi, station direct, post-shadow end) and days left to the next transition. Times are UTC, to the minute, from the ephemeris (JPL DE421, 2025–2030). This is astronomical timing, not a horoscope.

is_mercury_retrograde input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(T\\d{2}:\\d{2}(:\\d{2}(\\.\\d+)?)?Z)?$",
      "description": "Date to check as YYYY-MM-DD (read as 12:00 UTC). Defaults to now."
    }
  }
}
is_mercury_retrograde annotations
{
  "title": "Is Mercury retrograde?",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
next_mercury_retrograde — Next Mercury retrograde
Advertised by the server during the last successful anonymous check.
Advertised read-only

Returns the next Mercury retrograde after a date (or the one in progress, until it stations direct) with its sign, pre-shadow, station retrograde, cazimi, station direct and post-shadow end. Times are UTC, to the minute, from the ephemeris (JPL DE421, 2025–2030). This is astronomical timing, not a horoscope.

next_mercury_retrograde input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "from": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(T\\d{2}:\\d{2}(:\\d{2}(\\.\\d+)?)?Z)?$",
      "description": "Start date as YYYY-MM-DD (read as 12:00 UTC). Defaults to now."
    }
  }
}
next_mercury_retrograde annotations
{
  "title": "Next Mercury retrograde",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
next_mercury_cazimi — Next Mercury cazimi
Advertised by the server during the last successful anonymous check.
Advertised read-only

Returns the next Mercury cazimi (exact Sun–Mercury conjunction during a retrograde) after a date, with the UTC minute, the degree and 17′ window when known, and the previous cazimi. A cazimi within 12 hours of the date counts as today's and is returned as the previous one. Times are UTC, to the minute, from the ephemeris (JPL DE421, 2025–2030). This is astronomical timing, not a horoscope.

next_mercury_cazimi input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "from": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(T\\d{2}:\\d{2}(:\\d{2}(\\.\\d+)?)?Z)?$",
      "description": "Start date as YYYY-MM-DD (read as 12:00 UTC). Defaults to now."
    }
  }
}
next_mercury_cazimi annotations
{
  "title": "Next Mercury cazimi",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
mercury_retrograde_dates — Mercury retrograde dates for a year
Advertised by the server during the last successful anonymous check.
Advertised read-only

Lists every Mercury retrograde period that falls in or overlaps a year from 2025 to 2030, with sign, pre-shadow, station retrograde, cazimi, station direct and post-shadow end. Times are UTC, to the minute, from the ephemeris (JPL DE421, 2025–2030). This is astronomical timing, not a horoscope.

mercury_retrograde_dates input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "year"
  ],
  "properties": {
    "year": {
      "type": "integer",
      "maximum": 2030,
      "minimum": 2025,
      "description": "Year, 2025–2030"
    }
  }
}
mercury_retrograde_dates annotations
{
  "title": "Mercury retrograde dates for a year",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
retrograde_planets_today — Which planets are retrograde
Advertised by the server during the last successful anonymous check.
Advertised read-only

Use for "which planets are retrograde" questions. For Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto on a date, returns the phase (preShadow, retrograde, postShadow or direct), the sign, the current or next cycle's moments, cazimi-day (Mercury, Venus) and opposition-day (Mars through Pluto) flags, and one sentence naming the retrograde planets and when each stations direct. Times are UTC, to the minute, from the ephemeris (JPL DE421, 2025–2030). This is astronomical timing, not a horoscope.

retrograde_planets_today input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(T\\d{2}:\\d{2}(:\\d{2}(\\.\\d+)?)?Z)?$",
      "description": "Date to check as YYYY-MM-DD (read as 12:00 UTC). Defaults to now."
    }
  }
}
retrograde_planets_today annotations
{
  "title": "Which planets are retrograde",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
is_planet_retrograde — Is a planet retrograde?
Advertised by the server during the last successful anonymous check.
Advertised read-only

Says whether Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune or Pluto is retrograde on a date and which phase it is in, with the sign, pre-shadow, station retrograde, cazimi (Mercury, Venus) or opposition (Mars through Pluto), station direct, post-shadow end and days left to the next transition. Times are UTC, to the minute, from the ephemeris (JPL DE421, 2025–2030). This is astronomical timing, not a horoscope.

is_planet_retrograde input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "planet"
  ],
  "properties": {
    "date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(T\\d{2}:\\d{2}(:\\d{2}(\\.\\d+)?)?Z)?$",
      "description": "Date to check as YYYY-MM-DD (read as 12:00 UTC). Defaults to now."
    },
    "planet": {
      "enum": [
        "mercury",
        "venus",
        "mars",
        "jupiter",
        "saturn",
        "uranus",
        "neptune",
        "pluto"
      ],
      "type": "string",
      "description": "Planet"
    }
  }
}
is_planet_retrograde annotations
{
  "title": "Is a planet retrograde?",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
planet_retrograde_dates — Planet retrograde dates for a year
Advertised by the server during the last successful anonymous check.
Advertised read-only

Lists every retrograde period of Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune or Pluto that falls in or overlaps a year from 2025 to 2030 (a year with none says so and names the next one), with sign, shadows, cazimi or opposition, and stations. Times are UTC, to the minute, from the ephemeris (JPL DE421, 2025–2030). This is astronomical timing, not a horoscope.

planet_retrograde_dates input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "planet",
    "year"
  ],
  "properties": {
    "year": {
      "type": "integer",
      "maximum": 2030,
      "minimum": 2025,
      "description": "Year, 2025–2030"
    },
    "planet": {
      "enum": [
        "mercury",
        "venus",
        "mars",
        "jupiter",
        "saturn",
        "uranus",
        "neptune",
        "pluto"
      ],
      "type": "string",
      "description": "Planet"
    }
  }
}
planet_retrograde_dates annotations
{
  "title": "Planet retrograde dates for a year",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
next_planet_retrograde — Next retrograde of a planet
Advertised by the server during the last successful anonymous check.
Advertised read-only

Returns the next retrograde of Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune or Pluto after a date (or the one in progress, until it stations direct), with sign, shadows, cazimi or opposition, and stations. Times are UTC, to the minute, from the ephemeris (JPL DE421, 2025–2030). This is astronomical timing, not a horoscope.

next_planet_retrograde input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "planet"
  ],
  "properties": {
    "from": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}(T\\d{2}:\\d{2}(:\\d{2}(\\.\\d+)?)?Z)?$",
      "description": "Start date as YYYY-MM-DD (read as 12:00 UTC). Defaults to now."
    },
    "planet": {
      "enum": [
        "mercury",
        "venus",
        "mars",
        "jupiter",
        "saturn",
        "uranus",
        "neptune",
        "pluto"
      ],
      "type": "string",
      "description": "Planet"
    }
  }
}
next_planet_retrograde annotations
{
  "title": "Next retrograde of a planet",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
431 ms
95th percentile latency
431 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 431 ms · metadata changed · 8 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http cazimi-mcp https://cazimi.live/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add cazimi-mcp --url https://cazimi.live/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable cazimi-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "cazimi-mcp": {
      "url": "https://cazimi.live/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "cazimi-mcp": {
      "type": "streamableHttp",
      "url": "https://cazimi.live/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start cazimi-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "cazimi-mcp": {
      "type": "http",
      "url": "https://cazimi.live/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http cazimi-mcp https://cazimi.live/api/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://cazimi.live/api/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "cazimi-mcp": {
      "serverUrl": "https://cazimi.live/api/mcp"
    }
  }
}

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