Postal Lookup MCP
REMOTE · ADS.GETLULU.DEV · SCANNED AUG 9
Free, keyless postal/ZIP code lookup: place name(s), state/region, and coordinates.
Available components
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 →
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 1 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 Usability45
- 0% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Fail
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 213 tokens (~71/item across 3 items; 1 tools + 2 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management7
- Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
- Supports UI / widget rendering.Pass
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
remote · ads.getlulu.dev
claude mcp add --transport http lulu-the-narwhal-postal-lookup-mcp https://ads.getlulu.dev/postal/mcp
[mcp_servers.lulu-the-narwhal-postal-lookup-mcp] url = "https://ads.getlulu.dev/postal/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"lulu-the-narwhal-postal-lookup-mcp": {
"type": "remote",
"url": "https://ads.getlulu.dev/postal/mcp",
"enabled": true
}
}
} openclaw mcp add lulu-the-narwhal-postal-lookup-mcp --url https://ads.getlulu.dev/postal/mcp --transport streamable-http
mcp_servers:
lulu-the-narwhal-postal-lookup-mcp:
url: "https://ads.getlulu.dev/postal/mcp" {
"mcpServers": {
"lulu-the-narwhal-postal-lookup-mcp": {
"type": "http",
"url": "https://ads.getlulu.dev/postal/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
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.
- 9 Aug 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 8 Aug 26 0
- Stability: unverified → 0.03 ▲ functional
- 7 Aug 26 54
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 9 Aug 2026 · Probed https://ads.getlulu.dev/postal/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=ads.getlulu.dev | CN=WR3,O=Google Trust Services,C=US | 14 Jul 2026 | 12 Oct 2026 | RSA 2048 | SHA256-RSA | c08e7674d8d1667609828afcdf312d85 |
| SANs: ads.getlulu.dev | ||||||
| CN=WR3,O=Google Trust Services,C=US (CA) | CN=GTS Root R1,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | RSA 2048 | SHA256-RSA | 7ff005a91568d63abc22861684aa4b5a |
| CN=GTS Root R1,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 19 Jun 2020 | 28 Jan 2028 | RSA 4096 | SHA256-RSA | 77bd0d6cdb36f91aea210fc4f058d30d |
DNSSEC insecure
Validation of ads.getlulu.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| getlulu.dev. | 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 |
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://ads.getlulu.dev/postal/mcp | Verified | 200 | |
| http (plaintext) | http://ads.getlulu.dev/postal/mcp | HTTPS enforced | 301 | https://ads.getlulu.dev:443/postal/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.
lookup_postal_code ~199
Resolve a postal/ZIP code to its place name(s), state/region, and coordinates. `country_code` is a 2-letter ISO code (US, GB, DE, ...); `postal_code` format varies by country (e.g. "90210" for the US, "SW1A 1AA" style outward codes for the UK). Use for "what city is ZIP 90210 in", "where is postal code X in country Y", or any question that needs a place name/region/lat-lon from a postal code -- not for the reverse (place name to postal code) or for full street address lookup. Some postal codes span multiple places, in which case all of them are returned. Returns an error dict (never raises) if the code isn't recognized for that country.
| Name | Type | Req | Description |
|---|---|---|---|
| country_code | string | yes | – |
| postal_code | string | yes | – |
Structured output declared, but exposes no named fields.
No examples provided.