BabyData pregnancy calculators
REMOTE · BABYDATA.CO.UK
UK due date, ovulation, pregnancy weeks and maternity pay calculators. Not medical advice.
Available components
Last scanned (3 hours ago)
Scores higher than 54% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Health and Science
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security57
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability82
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 591 tokens (~98/item across 6 items; 4 tools + 2 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management50
- Stability observed for 15 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "maternity_pay" implies "pay" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 6 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 4 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 43 to 47. That category is still filling its 30-day observation window: 13 days of observed history at the previous scan, 14 at this one. The score rises as the window fills, whether or not the server changes.
- 1 Nov 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.
- 30 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.
- 24 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 22 Oct 26 +1
- Stability: unverified → 0.03 ▲ functional
- 21 Oct 26 62
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Probed https://babydata.co.uk/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=babydata.co.uk | CN=WE1,O=Google Trust Services,C=US | 14 Oct 2026 | 12 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 70499d36b9e0a2eb0e8212a774aaede4 |
| SANs: babydata.co.uk | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of babydata.co.uk. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| uk. | present | 43876 | 8 | Verified |
| co.uk. | present | 11810 | 8 | Verified |
| babydata.co.uk. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://babydata.co.uk/mcp | Verified | 200 | |
| http (plaintext) | http://babydata.co.uk/mcp | HTTPS enforced | 301 | https://babydata.co.uk/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
calculate_due_date ~154
Estimate a pregnancy due date and current stage using Naegele's rule, from the last menstrual period (LMP), conception date, or an IVF embryo-transfer date. Returns the estimated due date, weeks pregnant now, trimester and weeks remaining. Informational only, not medical advice.
| Name | Type | Req | Description |
|---|---|---|---|
| asOf | string | – | Reference date YYYY-MM-DD for "weeks pregnant now" (default today). |
| date | string | yes | The relevant date as YYYY-MM-DD: LMP, conception, or IVF transfer date. |
| embryoAge | number | – | Embryo age in days at IVF transfer (commonly 3 or 5; default 5). |
| method | string | – | Dating method (default lmp). |
No output schema declared.
No examples provided.
calculate_ovulation ~82
Estimate the likely ovulation day, the fertile window and the next period from the first day of the last period and the average cycle length. Informational only.
| Name | Type | Req | Description |
|---|---|---|---|
| cycleLength | number | – | Average cycle length in days, 20 to 45 (default 28). |
| lastPeriod | string | yes | First day of last period as YYYY-MM-DD. |
No output schema declared.
No examples provided.
maternity_pay ~115
Estimate UK Statutory Maternity Pay over the 39 weeks under gov.uk rules: 90% of average weekly earnings for 6 weeks, then the lower of the statutory flat rate or 90%. Uses the 2026-27 gov.uk flat rate of £194.32 a week, which changes each April. Estimate only, not advice.
| Name | Type | Req | Description |
|---|---|---|---|
| annualSalary | number | – | Annual salary before tax (GBP), converted at /52. |
| weeklyEarnings | number | – | Average weekly earnings before tax (GBP). |
No output schema declared.
No examples provided.
pregnancy_weeks ~108
Work out how many weeks and days pregnant someone is, the trimester and progress through the 40 weeks, from either the LMP or the due date. Informational only, not medical advice.
| Name | Type | Req | Description |
|---|---|---|---|
| asOf | string | – | Reference date YYYY-MM-DD (default today). |
| dueDate | string | – | Due date as YYYY-MM-DD (LMP is worked back as dueDate minus 280 days). |
| lmp | string | – | First day of last period as YYYY-MM-DD. |
No output schema declared.
No examples provided.
How do I install the BabyData pregnancy calculators MCP server?
BabyData pregnancy calculators is a hosted endpoint at https://babydata.co.uk/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · babydata.co.uk
claude mcp add --transport http uk-co-babydata-pregnancy-calculators 'https://babydata.co.uk/mcp'
What is the BabyData pregnancy calculators MCP server?
BabyData pregnancy calculators is an MCP server listed in the public MCP registry as uk.co.babydata/pregnancy-calculators. UK due date, ovulation, pregnancy weeks and maternity pay calculators. Not medical advice. This page covers its hosted endpoint (https://babydata.co.uk/mcp).
Is the BabyData pregnancy calculators MCP server safe to use?
BabyData pregnancy calculators scores 69 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the BabyData pregnancy calculators MCP server expose?
BabyData pregnancy calculators exposes 4 tools: calculate_due_date, calculate_ovulation, pregnancy_weeks, maternity_pay. Their descriptions and schemas cost roughly 459 tokens of context every time the server is loaded.
Does the BabyData pregnancy calculators MCP server require authentication?
No. We connected to BabyData pregnancy calculators without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the BabyData pregnancy calculators MCP server still maintained?
BabyData pregnancy calculators is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.