Western Astrology MCP Server by RoxyAPI

Monthly Transits - Tropical sign ingresses for an entire month

post_astrology_transits_monthly

Read-only

Get every tropical sign change for a given month, for all 14 Western bodies: the Sun through Pluto, both lunar nodes, Chiron and Black Moon Lilith. Returns the starting sign of each body on the first of the month and then each ingress with its exact date and time in your timezone. Omit year and month to get the month in progress, so a published transit calendar stays current without a redeploy. Essential for transit calendars, monthly forecast copy, retrograde and ingress tracking, and newsletter automation. Monthly transit API, planetary ingress calendar, sign change dates, tropical transit table. Verified against NASA JPL Horizons, with the four cardinal ingresses cross-checked against published equinox and solstice times.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`lang`	No	Response language (BCP 47). Supported: en, tr, de, es, hi, pt, fr, ru, zh-Hans, zh-Hant. Defaults to en. Coverage varies by domain, and a field with no translation in the requested language returns English.	en
`year`	No	Year for the monthly transit table (1900-2100). Defaults to the current year (UTC).
`month`	No	Month number (1-12). Defaults to the current month (UTC).
`compact`	No	Set true for the same data in a compact shape: arrays of same-shaped objects arrive columnar as {"__cols":[names],"__rows":[[values]]}. Lossless, typically 40 to 52 percent fewer tokens.
`nodeType`	No	Lunar node convention. "mean" is the smoothed average node, which always moves retrograde; "true" is the osculating node, which tracks the real perturbed node, oscillates up to about 1.5 degrees either side of the mean on a 173-day cycle, and can briefly turn direct. Neither is more correct and they almost always fall in the same sign. Applies to the North and South Node. True is the osculating node and the default, because it is what most Western chart software reports; mean is the smoothed node preferred by several evolutionary schools, so pass "mean" to match one. Nothing else in the chart changes, and the two agree on the sign except when the node sits within about 1.8 degrees of a cusp. Defaults to "true".	true
`timezone`	No	Timezone offset from UTC in hours. Ingress dates and times are reported in this zone, which is what makes a published calendar read correctly for its audience. Defaults to 0 (UTC).

TDQS

A4.2/5.0

Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the readOnlyHint and destructiveHint annotations, the description discloses result contents (starting signs plus ingresses with exact date/time), timezone sensitivity, default-to-current-month behavior, and accuracy reassurance against NASA JPL Horizons. This provides meaningful context an agent would not get from the annotations alone.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description opens with the core action and output, then practical usage guidance. The trailing keyword list ('Monthly transit API, planetary ingress calendar, sign change dates, tropical transit table') reads like SEO filler and adds little, keeping it from a 5, but most sentences are targeted and not duplicated.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Even without an output schema, the description outlines what the tool returns, for what period, for which highlights, at what timezone, and how to keep a calendar current. With all six parameters already fully described in the schema and no required inputs, the base description supplies complete operational context for an agent to call it correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the burden on the description is low. It adds some useful semantic context for the year and month parameters, e.g. 'Omit year and month to get the month in progress, so a published transit calendar stays current.' For other parameters like lang, compact, and nodeType, the description does not attempt to add anything beyond the already-thorough schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific verb and resource: 'Get every tropical sign change for a given month, for all 14 Western bodies.' It also precisely enumerates the scope (Sun through Pluto, lunar nodes, Chiron, Black Moon Lilith) and distinguishes itself naturally from sibling tools like post_astrology_transits, post_astrology_transit_aspects, and get_astrology_moon_phase_calendar_year_month.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives clear use cases: 'transit calendars, monthly forecast copy, retrograde and ingress tracking, and newsletter automation.' It also explains the option of omitting year and month to get the month in progress. It stops short of explicitly telling an agent when not to use this tool versus alternatives such as post_astrology_transits or post_astrology_aspects_monthly.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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TDQS

A3.8/5.0

Disambiguation3/5

Most tools are scoped to a clearly distinct domain—moon phases, houses, returns, fixed stars, astrocartography—but several pairs overlap, notably synastry vs. compatibility_score and transits vs. transit_aspects. The descriptions are long and do help an agent choose, but the boundaries are not always obvious at the name level.

Naming Consistency4/5

Every tool follows the same snake_case get_astrology_/post_astrology_ prefix pattern, making the group predictable and readable. However, collection endpoints like get_astrology_planet_meanings_id and get_astrology_signs_id awkwardly combine plural collection and singular id naming, and names like calendar_year_month depart from the cleaner resource+suffix pattern.

Tool Count2/5

With 38 tools, this is well over the 25+ threshold and feels heavy for an agent to traverse. While Western astrology is a broad domain, several near-duplicate endpoints, especially synastry/compatibility and transits/transit_aspects, could be consolidated into fewer, more scoped tools.

Completeness5/5

The toolset is comprehensive, covering natal charts, relationships, transits, returns, progressions, aspects, houses, relocation, and reference data. It includes enough specialized endpoints for both casual horoscope use and in-depth astrological analysis, with no obvious dead ends for the stated domain.

Resources

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