otherapi_key

44API

44API validates VAT and tax identifiers, returns available company details, and manages account IP whitelists.

Verdict

44API brings VAT validation and IP whitelist management into Switchy. @mention it to verify tax IDs for invoicing workflows or manage which addresses can reach your Enterprise account. Finance teams use it to confirm customer VAT numbers before issuing invoices; ops teams script IP access changes without leaving chat. The IP whitelist tools require an Enterprise 44API plan and will reject requests from lower tiers. VAT validation works across plans but returns more company detail on paid subscriptions.

Common use cases

  • Validate customer VAT numbers before invoicing
  • Add contractor IPs to account whitelist
  • Audit which addresses have API access
  • Remove offboarded user IPs from whitelist
  • Confirm tax ID format for EU transactions

Integration

Vendor
44API
Category
other
Auth
API_KEY
Tools
4
Composio slug
44api

Tools

  • Add Whitelisted IP

    Add one IPv4 or IPv6 address to the account whitelist using a verification email address. Requires an Enterprise 44API plan. The request contract is documented, but a successful addition has not been live-verified.

  • List Whitelisted IPs

    List IP addresses currently allowed by the account whitelist. This operation requires an Enterprise 44API plan; the API rejects lower-tier accounts.

  • Remove Whitelisted IP
    destructive

    Remove one IPv4 or IPv6 address from the account whitelist. This destructive operation changes account access controls and requires an Enterprise 44API plan. The shared whitelist endpoint's Enterprise gate was live-verified, but its mutatin

  • Validate VAT Number

    Validate one VAT or tax ID for a supported country and return its validity plus any company details available on the connected plan.

Setup

Setup guide

  1. 11. Open your Switchy workspace settings and navigate to Integrations. 2. Search for 44API and click Connect. 3. Paste your 44API key from your account dashboard at 44api.com—find it under API Access in settings. 4. Click Authorize to complete the connection. 5. Open any Project and type '@44API validate VAT number GB123456789' to test; the MCP should return validity status and any registered company name. 6. If you see an Enterprise plan error when testing IP whitelist commands, confirm your 44API subscription tier supports those operations. 7. Once validated, the MCP is live across all Projects where team members @mention it.

What teammates see: by default, memories from 44API are scoped to the Project (PROJECT visibility) - you can mark any memory PRIVATE or share it ORG-wide.

Works well with

Top models

Compatibility data appears once enough Projects have used this MCP together with a given model.

How Switchy teams use it

Not enough Projects yet to publish anonymised usage stats (we require ≥ 50 Projects per week).

Starter prompts

Validate Customer VAT

@44API validate the VAT number DE123456789 and tell me if it's active and what company name is registered to it.

List Current Whitelist

@44API list all IP addresses on our account whitelist right now so I can review who has access.

Add New IP Address

@44API add 203.0.113.42 to our whitelist using the verification email admin@example.com for approval.

Remove Offboarded IP

@44API remove 198.51.100.7 from our account whitelist since that contractor finished last week.

Batch VAT Check

@44API validate these three VAT numbers: FR12345678901, ES98765432101, IT11223344556. Tell me which are valid and include company names.

Example outputs

Illustrative - representative of the model's voice and quality, not literal recordings.

Prompt

@44API validate the VAT number DE123456789 and tell me if it's currently active

Output

The VAT number DE123456789 is valid and active. It belongs to Example GmbH, registered in Germany. The company name on file is "Example Gesellschaft mit beschränkter Haftung" with a registered address in Berlin. This validation was performed against the EU VIES database and reflects the status as of today.

Notes

VAT validation is available on all 44API plan tiers. The response detail (company name, address) depends on what the underlying tax authority exposes. Some countries return minimal data. Results reflect point-in-time status and can change if a business deregisters.

Prompt

@44API add 203.0.113.42 to our account whitelist using verification email admin@example.com

Output

I've submitted a request to add 203.0.113.42 to your 44API account whitelist. A verification email has been sent to admin@example.com. The IP will be whitelisted once someone clicks the confirmation link in that email. Until confirmed, 203.0.113.42 cannot access your 44API resources.

Notes

This operation requires an Enterprise 44API plan and changes account-level access controls. The IP is not active until email verification completes. If the verification email expires or is ignored, the IP remains blocked. Use this carefully in production environments where access timing matters.

Prompt

@44API show me all IPs currently on our whitelist and flag any that look like they might be stale office addresses

Output

Your 44API whitelist contains 7 IP addresses: 203.0.113.10, 203.0.113.42, 198.51.100.5, 198.51.100.22, 192.0.2.15, 192.0.2.88, and 2001:db8::1. Based on naming patterns and typical office IP blocks, 198.51.100.22 and 192.0.2.88 appear to be older entries that may warrant review—these are in ranges often assigned to branch offices or legacy infrastructure. Confirm with your IT team whether these are still in use.

Notes

Listing whitelisted IPs requires an Enterprise plan. The AI's assessment of "stale" IPs is heuristic, not authoritative—it cannot see usage logs or know your network topology. Always verify with your infrastructure team before removing any IP, as removal is immediate and blocks access.

Use-case deep-dives

Invoice validation for B2B SaaS

When 44API makes sense for recurring billing compliance

A 6-person SaaS startup selling to European SMBs needs to validate customer VAT numbers at signup and renewal. The validate-VAT tool returns validity plus company details in one call, which beats manually checking VIES or paying Stripe Tax for low-volume accounts. If you're processing under 500 invoices a month and already have an API-key workflow, 44API slots in without ceremony. The trade-off: you're adding a third-party dependency to your billing path, so cache results and handle timeouts gracefully. If your invoice volume crosses 2,000 monthly or you need real-time tax-rate calculation, Stripe Tax or Avalara become the safer bet. For lean teams that just need compliant VAT checks, this MCP keeps it simple.

IP whitelist management for remote teams

Why the IP tools only work at Enterprise scale

A 12-person security consultancy wants to restrict API access to known office and VPN IPs. The add-IP and list-IP tools look like a fit, but they require an Enterprise 44API plan—pricing that makes sense if you're already paying for 44API's core services at volume, not if you're bolting on IP management alone. The MCP gives you programmatic control (add an IP from Slack, audit the list in standup), but most teams under 50 people get better ROI from Cloudflare Access or Tailscale, which bundle IP policies with zero-trust networking. Use this MCP if you're already an Enterprise 44API customer and need to script whitelist changes during incident response. Otherwise, the per-seat cost of a dedicated access tool will beat the Enterprise tier.

Compliance audit trail for financial ops

When 44API's whitelist log matters for SOC 2

A 20-person fintech in SOC 2 prep needs an auditable record of which IPs touched their payment API. The list-whitelisted-IPs and remove-IP tools let you snapshot the whitelist daily and log every change with a timestamp and actor. If your auditor wants proof that only authorized IPs reached production, this MCP gives you a programmatic answer without screen-scraping a vendor dashboard. The ceiling: you need the Enterprise plan, and the toolset assumes you're using 44API's whitelist as your primary access control. If your infrastructure already logs IP access at the load-balancer or API-gateway layer, you don't need a second source of truth. For teams where 44API is the system of record and compliance drives the roadmap, these four tools close a documentation gap.

Frequently asked

What does the 44API MCP do in Switchy?

It lets your team validate VAT numbers and manage IP whitelists for 44API accounts directly from Switchy conversations. The MCP wraps four operations: VAT validation (available on all plans) and three IP whitelist commands (add, list, remove) that require an Enterprise 44API subscription. You authenticate once with an API key, then any teammate can invoke these tools without leaving the workspace.

Do I need an Enterprise plan to use this MCP?

Only if you want the IP whitelist tools. VAT validation works on any 44API plan tier. The three whitelist operations—add, list, and remove IP addresses—explicitly require Enterprise and will reject requests from lower-tier accounts. If you're only validating tax IDs, a standard 44API plan is enough.

Can the MCP validate VAT numbers for every country?

No. It validates VAT and tax IDs for countries 44API supports, which varies by your plan level. The tool returns validity status and company details when available, but coverage depends on 44API's upstream data sources. If you need a specific jurisdiction, check 44API's documentation or test a sample ID before committing to the integration.

Why use this MCP instead of calling 44API directly?

Speed and context. Your team can validate a VAT number or update the IP whitelist mid-conversation without switching to a browser or writing curl commands. The MCP handles authentication and request formatting automatically. If you're already building scripts or have a dedicated compliance workflow, the raw API might be simpler—but for ad-hoc checks during sales calls or onboarding, the MCP is faster.

Who on the team should connect the 44API MCP?

Whoever holds the 44API account credentials and understands your whitelist policy. The IP whitelist tools are destructive—removing an address can lock out legitimate traffic—so limit access to ops or security leads. VAT validation is read-only and safe for sales or finance teammates to use once the connection is live.

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Data last verified 61 hours ago.Sources aggregated hourly to weekly. See docs/architecture/model-directory.md.