Celestio

by celestio.ai · https://celestio.ai/mcp

Birth charts and personal astrology readings, plus compatibility between two people's charts.

7 tools✓ no account neededPricing: not listed

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93 /100

PASS · WITH NOTES

11 of 11 checks · 24 Oct 2026

What it can do

7 tools, in the server's own words.

compute_birth_chartread-only

Calculates a birth chart (planets, signs, houses, rising sign, aspects) for anyone from their name, birth date, place and, if known, time.

compare_birth_chartsread-only

Compatibility between two people (partners, crushes, friends, family) from their names, birth dates, places and, if known, times.

get_birth_reading

Writes (or returns the already written) free personal birth chart reading for someone, saved in the connected Celestio account.

list_my_readingsread-only

Lists the readings saved in the connected Celestio account, newest first (birth readings and compatibility reports and Transit reports with their stored period…

get_readingread-only

Returns one reading from the connected Celestio account by readingId: its sections and a link to it on celestio.ai.

preview_transits

Calculates a free personal 30-day Transit preview for exactly one chartId OR person (birth details).

preview_compatibility

Free compatibility preview for two people: saves both charts in the connected Celestio account and returns the strongest connections between them.

Test results

Safe mode: only tools labeled read-only were run. How the test works

!
Every tool is described
1 warning
- !compute_birth_chart: Inputs with no description: longitude
note
✓
ConnectsConnected in 637 ms
pass
✓
Ready for the newest MCP versionUses the latest MCP version (2026-07-28)
pass
✓
Lists its toolsFound 7 tools
pass
✓
Tools are labeled safe or dangerousEvery tool has a safety label
pass
✓
No hidden instructionsNo hidden instructions found in tool descriptions
pass
✓
Tools work with good inputs
All good
- ✓compute_birth_chart: Answered with an error, probably because of our sample input: Input validation error: Invalid arguments for tool compute_birth_chart: date: Invalid string: must match pattern /^\d{4}-\d{2}-\d{2}$/
- ✓compare_birth_charts: Answered with an error, probably because of our sample input: Input validation error: Invalid arguments for tool compare_birth_charts: first.date: Invalid string: must match pattern /^\d{4}-\d{2}-\d{2}…
- –list_my_readings: Needs you to sign in, so it was not tested (not counted against the server)
- –get_reading: Needs you to sign in, so it was not tested (not counted against the server)
- –get_birth_reading: Not run: labeled as changing data
- –preview_transits: Not run: labeled as changing data
- –preview_compatibility: Not run: labeled as changing data
pass
✓
Bad inputs give a clean error
All good
- ✓compute_birth_chart: Refused missing required input "name" with a clear error
- ✓compute_birth_chart: Refused wrong type for "name" with a clear error
- ✓compare_birth_charts: Refused missing required input "first" with a clear error
- ✓compare_birth_charts: Refused wrong type for "first" with a clear error
- –list_my_readings: Needs you to sign in, so bad inputs were not tested
- –get_reading: Needs you to sign in, so bad inputs were not tested
pass
✓
Fast enough
All good
- ✓Connecting took 637 ms
- ✓Listing tools took 441 ms
- ✓Average tool answer: 161 ms
- ✓compute_birth_chart: Slowest tool: compute_birth_chart (184 ms)
pass
✓
No secrets leakedChecked 11 error messages: no secrets or internal details
pass
✓
Resources and prompts work
All good (1 resource)
- ✓Opened 1 of 1 resources
- ✓An address that does not exist gets a clean "not found" error
pass
–
Tools work togetherNo safe tool returned data to start a chain from, so chains were not tested (not counted either way)
not tested

Test it yourself

Free and open source. Same checks, same score.

npx qamcp-cli https://celestio.ai/mcp

Score over time

24 Oct 202693

One test so far. New tests will show here.

Reviews

Coming soon: reviews from people who use Celestio, signed in with GitHub, one per person. Reviews never change the score.

Is this your server?

Soon you can claim this page: re-test it from here, reply to results, and show a "Tested by QAmcp" badge.

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