A
VAT via Locus MPP
data
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Free budget controls, response samples, and reliability routing.
Compliance Checks
All paid ops declare 402 response
MUST
10pt
All x-payment-info valid
MUST
10pt
Challenge has Cache-Control: no-store
MUST
5pt
Challenge digest on POST
SHOULD
3pt
Challenge has expires
SHOULD
3pt
Challenge has Problem Details
SHOULD
2pt
Challenge has required params
MUST
5pt
Challenge has WWW-Authenticate
MUST
5pt
Challenge returns 402
MUST
10pt
Correct Content-Type
MUST
5pt
Has Cache-Control on discovery
SHOULD
5pt
Has input schemas
SHOULD
5pt
Has llms.txt
SHOULD
5pt
Has /openapi.json at root
MUST
10pt
Has required top-level fields
MUST
10pt
Served over HTTPS
MUST
10pt
Uses standard categories
SHOULD
2pt
1 issue
- POST endpoint challenge missing digest parameter (SHOULD per spec)
Paid Operations (3)
POST /abstract-vat/validate 0.006 USDC.e
Validate
- Amount
- 0.006 (raw 6000)
- Currency
- USDC.e
- Method
- tempo
- Intent
- charge
- 402 Declared
- Yes
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| vat_number | string | Yes | VAT number to validate |
POST /abstract-vat/calculate 0.006 USDC.e
Calculate
- Amount
- 0.006 (raw 6000)
- Currency
- USDC.e
- Method
- tempo
- Intent
- charge
- 402 Declared
- Yes
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| amount | number | Yes | Amount to calculate VAT for |
| country_code | string | Yes | ISO 3166-1 alpha-2 country code |
| is_vat_incl | boolean | No | Whether amount includes VAT |
| vat_category | string | No | VAT category |
POST /abstract-vat/categories 0.006 USDC.e
Categories
- Amount
- 0.006 (raw 6000)
- Currency
- USDC.e
- Method
- tempo
- Intent
- charge
- 402 Declared
- Yes
Input Schema
| Field | Type | Required | Description |
|---|---|---|---|
| country_code | string | Yes | ISO 3166-1 alpha-2 country code |
Payment Methods
- Methods
- tempo
- Intents
- charge
- Currencies (discovery)
- USDC.e
- Currency (challenge)
- USDC.e on Tempo (Tempo)
- Multiple Challenges
- No
Recipients
- 0x060b0fB0Be9d90557577B3AEE480711067149Ff0
Per-endpoint breakdown
- POST /abstract-vat/calculate
- 0x060b0fB0Be9d90557577B3AEE480711067149Ff0
- POST /abstract-vat/categories
- 0x060b0fB0Be9d90557577B3AEE480711067149Ff0
- POST /abstract-vat/validate
- 0x060b0fB0Be9d90557577B3AEE480711067149Ff0
Security
- TLS Version
- TLSv1.3
- Challenge ID Unique
- -
- Challenge ID Length
- -
- Digest Binding
- -
Uptime
- Discovery
- Reachable (559ms)
- Challenge
- Reachable (638ms)
- Last Checked
Schema Completeness
- Paid Operations
- 3
- With Input Schema
- 3
- With Description
- 3
Documentation
- Homepage
- https://www.abstractapi.com/api/vat-validation-rates-api
- API Reference
- https://docs.abstractapi.com/vat
- llms.txt
- https://beta.paywithlocus.com/mpp/abstract-vat.md reachable
Discovery
- OpenAPI URL
- https://abstract-vat.mpp.paywithlocus.com/openapi.json
- OpenAPI Version
- 3.1.0
- Service Version
- 1.0.0
- Document Size
- 2056 bytes
- Document Hash
- 603f450968b055fcf4bde736de4d30f5b83c95c3e83c30ce56d1261546c6b8b9
Version History (2 snapshots)
Grade: F (13%) → A (97%)
Grade: A (97%) → F (13%)
Scan snapshots
| Date | Grade | Score | Response | Status |
|---|---|---|---|---|
| 2026-04-06 | A | 97% | 693ms | Up |
| 2026-04-07 | A | 97% | 567ms | Up |