Use Astrotechne through MCP

Calculate and render charts as a guest, or connect an account for saved charts, people, events, relationships, tags, groups, and display settings.

Current MCP capabilities

26 registered tools grouped by what they do. Account access is requested only for the connected operations shown here.

Calculate charts and transits

Calculate a chart of the moment, supplied chart data, or current transits without saving automatically.

Guest or connected

get_chart_of_momentcalculate_chartcalculate_connected_chartcalculate_transits

Render chart wheels

Render a calculated projection with ephemeral overrides or a connected account's saved display defaults.

Guest or connected

render_chartrender_chart_with_saved_settings

Search task documentation

Find bounded examples and guidance for the currently registered MCP tools.

Guest

search_api_docs

Work with saved charts

List, retrieve, or explicitly save charts owned by the connected account.

Connected account

list_chartsget_chartsave_chart

Work with people

List, inspect, create, or update private people records owned by the connected account.

Connected account

list_peopleget_personcreate_personupdate_person

Work with events

List, inspect, create, or update private event records owned by the connected account.

Connected account

list_eventsget_eventcreate_eventupdate_event

Work with relationships

List, inspect, create, or update owner-validated workspace relationships.

Connected account

list_relationshipsget_relationshipcreate_relationshipupdate_relationship

Organize saved charts

Inspect or update saved-chart library tags and groups.

Connected account

list_chart_tagsupdate_chart_tags

Use display settings

Read or update the supported chart-rendering defaults for a connected account.

Connected account

get_chart_settingsupdate_chart_settings

Search documentation

Search the public task guides by question or workflow.

Documentation tasks

Choose the task closest to what you want to accomplish.

Get the chart of the moment for a place

Calculate the current sky for an explicit place or coordinates without saving it.

Calculate a natal chart from local birth time and city

Supply a local calendar date, local time, and place name for timezone-aware calculation.

Calculate an event chart from UTC and coordinates

Use an exact UTC instant and latitude/longitude without geocoding.

Request placements and aspects without an image

Return bounded structured chart fields without creating a browser launch.

Render a chart image for an MCP response

Create a short-lived browser or image handoff from calculated chart data.

Handle unknown birth time

Mark the time as unknown instead of inventing a precise birth time.

Resolve ambiguous locations

Choose a specific place candidate before calculation and quota consumption.

Use sidereal zodiac options

Select sidereal mode and an explicit ayanamsha.

Authenticate after hitting the anonymous limit

Continue a pending normalized request through a neutral account connection flow.

Understand chart calculation rate limits

Guest calculation, render, transit, and docs work use distinct bounded buckets.

Inspect orb and applying or separating aspect fields

Read bounded structured aspect contacts from a chart projection.

Know when an Astrotechne account connection is required

Calculation is public; persistence and private retrieval require minimum OAuth scopes.

Use ephemeral or persistent chart rendering settings

Per-call display overrides are public; saved defaults require an account connection.

Understand personal transit and astro-weather privacy

Personal forecasts derive from an explicit natal input or an owned saved chart.

Calculate current transits against a natal chart

Submit natal data explicitly and calculate a bounded current transit window.

List, retrieve, and save connected-account charts

Use minimum OAuth scopes for explicit saved-chart operations.

List, inspect, create, and update people records

Use owner-scoped people tools without exposing unrelated contact or chart payloads.

List, inspect, create, and update event records

Use owner-scoped events without exposing embedded chart or condition payloads.

List, inspect, create, and update relationships

Link owned workspace entities with private-by-default, duplicate-safe writes.

Inspect and update saved-chart tags and groups

Organize owned saved charts without retrieving their calculation payloads.

Read, update, and apply saved chart display settings

Persist only the supported presentation fields for a connected account.

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