Nummeropslag
PYPI · NUMMEROPSLAG-MCP · 3 COMPONENTS · SCANNED SEP 13
Privacy-first Danish caller ID, CVR company lookup, operator data, and community spam signals.
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- Runs setuptools.build_meta at install time, a recognised native-build step with no shell scripting around it. View diagnostics → Pass
- 0 of 29 dependencies flagged as unhealthy. View diagnostics → Pass
Provenance & Transparency48
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 39 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability73
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 283 tokens (~56/item across 5 items; 5 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management87
- Stability observed for 26 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage67
- 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
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the Nummeropslag MCP server?
Nummeropslag runs locally as a PyPI package, launched with uvx nummeropslag-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
pypi · nummeropslag-mcp
claude mcp add andrey-tut-nummeropslag -- uvx nummeropslag-mcp
{
"mcpServers": {
"andrey-tut-nummeropslag": {
"command": "uvx",
"args": [
"nummeropslag-mcp"
]
}
}
} {
"servers": {
"andrey-tut-nummeropslag": {
"command": "uvx",
"args": [
"nummeropslag-mcp"
]
}
}
} codex mcp add andrey-tut-nummeropslag -- uvx nummeropslag-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"andrey-tut-nummeropslag": {
"type": "local",
"command": [
"uvx",
"nummeropslag-mcp"
],
"enabled": true
}
}
} openclaw mcp add andrey-tut-nummeropslag --command uvx --arg nummeropslag-mcp
mcp_servers:
andrey-tut-nummeropslag:
command: "uvx"
args: ["nummeropslag-mcp"] {
"McpServers": {
"andrey-tut-nummeropslag": {
"Transport": "stdio",
"Command": "uvx",
"Arguments": [
"nummeropslag-mcp"
]
}
}
} assistant mcp add andrey-tut-nummeropslag -t stdio -c uvx -a nummeropslag-mcp
{
"mcpServers": {
"andrey-tut-nummeropslag": {
"command": "uvx",
"args": [
"nummeropslag-mcp"
]
}
}
} 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.
- 12 Sept 26 +16
- Malware scan: unverified → pass ▲ security
- 11 Sept 26 −3
- Stability: pass → 0.80 functional
- 10 Sept 26 −15
- Malware scan: pass → unverified ▼ security
- Stability: 0.97 → pass security
- 9 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 7 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 5 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
- 4 Sept 26 −3
- Stability: pass → 0.80 functional
- 3 Sept 26 0
- Stability: 0.97 → pass security
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 13 Sept 2026 · Analysed pypi/nummeropslag-mcp@1.0.2
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | pypi |
Background: How many MCP packages publish verified provenance →
Install scripts 1 script
| Hook | Tier | Command |
|---|---|---|
| build_backend | allowlisted | setuptools.build_meta |
Background: Why install scripts are a supply-chain risk →
Dependencies 29 packages
| Packages resolved | 29 |
|---|---|
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
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 →
api_status Check Nummeropslag API status ~32
Return the status of the configured API key: allowed scopes, daily quota and how many calls have been used today.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
check_spam Check a Danish number for spam ~65
Quick spam/scam check for a Danish phone number. Returns a compact verdict: spam level, score, trust rating and how many users reported it. Use this to decide whether an incoming call is likely spam, telemarketing or a scam.
| Name | Type | Req | Description |
|---|---|---|---|
| number | string | yes | – |
No output schema declared.
No examples provided.
get_operator Get a Danish number's operator ~51
Return the telecom operator and number type (mobile / landline / service) for a Danish phone number, from the official Danish number plan. Lightweight, no company data.
| Name | Type | Req | Description |
|---|---|---|---|
| number | string | yes | – |
No output schema declared.
No examples provided.
lookup_number Look up a Danish phone number ~82
Look up a Danish phone number and return the full record: the registered company (from the official CVR register), the telecom operator, the number type, a community spam/trust rating and recent anonymous comments. `number` is an 8-digit Danish number (separators, spaces and a +45 prefix are accepted).
| Name | Type | Req | Description |
|---|---|---|---|
| number | string | yes | – |
No output schema declared.
No examples provided.
search_businesses Search Danish businesses ~53
Search Danish companies by name (from the CVR register). Returns matching businesses. Useful to find a company's phone number or details by name.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | – |
| query | string | yes | – |
No output schema declared.
No examples provided.
What is the Nummeropslag MCP server?
Nummeropslag is an MCP server listed in the public MCP registry as io.github.andrey-tut/nummeropslag. Privacy-first Danish caller ID, CVR company lookup, operator data, and community spam signals. This page covers its PyPI package (nummeropslag-mcp).
Is the Nummeropslag MCP server safe to use?
Nummeropslag scores 80 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 13 September 2026. 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 Nummeropslag MCP server expose?
Nummeropslag exposes 5 tools: lookup_number, check_spam, get_operator, search_businesses, api_status. Their descriptions and schemas cost roughly 283 tokens of context every time the server is loaded.
Is the Nummeropslag MCP server still maintained?
Nummeropslag is still listed as active in the MCP registry. We last reached this channel on 13 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Nummeropslag MCP server under?
Nummeropslag declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.