Sri Lanka Tax (lk-tax)
PYPI · LK-TAX-MCP
Exact, sourced Sri Lankan tax calculations: APIT, income tax, withholding tax, VAT and SSCL.
Available components
Last scanned (14 hours ago)
Scores higher than 61% of PyPI servers
Category Finance and Payments
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 Security50
- Malware scan not yet available for this package.Unverified
- No known CVEs affecting this package version or its production dependencies.Pass
- Runs hatchling.build at install time, a recognised build step with no custom scripting around it. View diagnostics → Pass
- 1 of 30 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- 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 13 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability67
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1527 tokens (~169/item across 9 items; 9 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
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
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Unverified: 1 category
A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.
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.
- 14 Oct 26 +30
- Injection markers: unverified → pass ▲ security
- First check of Judged manipulation: pass security
- Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window). security
- Tool coverage: unverified → 100 ▲ functional
- MCP protocol: unverified → pass ▲ functional
- First check of Schema quality: fail functional
- First check of Schema quality: excellent functional
- First check of Destructive annotations: pass functional
- First check of Schema quality: fail functional
- First check of Tool coverage: 100 functional
- First check of Tool coverage: 100 functional
- 13 Oct 26 −15
- Malware scan: pass → unverified ▼ security
- 12 Oct 26 +15
- Provenance: unverified → fail ▼ security
- Malware scan: unverified → pass ▲ security
- 8 Oct 26 24
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 18 Oct 2026 · Analysed pypi/lk-tax-mcp@0.1.0
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | pypi |
| Reason | No attestation published |
Background: How many MCP packages publish verified provenance →
Install scripts 1 script
| Hook | Tier | Command |
|---|---|---|
| build_backend | allowlisted | hatchling.build |
Background: Why install scripts are a supply-chain risk →
Dependencies 30 packages
| Packages resolved | 30 |
|---|---|
| No linked repository | 1 |
| 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 →
calculate_annual_income_tax ~108
Personal income tax for a resident individual for a whole year of assessment. Applies the personal relief and progressive rates for that year and returns the tax, the band-by-band breakdown and the effective rate.
| Name | Type | Req | Description |
|---|---|---|---|
| annual_income | – | yes | Total assessable income for the year of assessment, before personal relief, in rupees. |
| year_of_assessment | string | yes | Year of assessment (April to March), e.g. "2025/26". Supported from 2023/24. |
Structured output declared, but exposes no named fields.
No examples provided.
calculate_salary_tax ~176
APIT (Advance Personal Income Tax) an employer deducts from one month's salary. Uses APIT Tax Table No. 01: regular monthly employment income (salary plus allowances and taxable benefits) of a resident employee, or a non-resident Sri Lankan citizen, in their primary employment. `tax` is the amount from the official table, which is what payroll deducts; `exact_tax` is the underlying formula to the cent. Not for lump sums, bonuses paid once, secondary employment or non-resident foreign employees.
| Name | Type | Req | Description |
|---|---|---|---|
| monthly_income | – | yes | Amount in Sri Lankan rupees, e.g. 350000 or "350000.50". |
| pay_date | – | – | Date the rules apply to, as YYYY-MM-DD (e.g. the pay date or invoice date). Defaults to today. |
Structured output declared, but exposes no named fields.
No examples provided.
calculate_sscl ~171
Social Security Contribution Levy (SSCL): 2.5% of the liable share of turnover for an activity. For a business with several activities, call once per activity and add the results. Does not cover financial services, which are levied on value addition.
| Name | Type | Req | Description |
|---|---|---|---|
| activity | string | yes | import: importing (100% liable). manufacture: manufacturing (85%). service: providing services (100%). distributor: sale by a registered distributor of a Sri Lankan manufacturer (25%). wholesale_reta… |
| on_date | – | – | Date the rules apply to, as YYYY-MM-DD (e.g. the pay date or invoice date). Defaults to today. |
| turnover | – | yes | Turnover from this activity for the period, in rupees. |
Structured output declared, but exposes no named fields.
No examples provided.
calculate_vat ~145
Add VAT to a price, or work out the VAT included in a VAT-inclusive price. The caller decides whether the supply is taxable: this tool does not classify goods or services as exempt or zero-rated.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | – | yes | Amount in Sri Lankan rupees, e.g. 350000 or "350000.50". |
| invoice_date | – | – | Date the rules apply to, as YYYY-MM-DD (e.g. the pay date or invoice date). Defaults to today. |
| mode | string | – | add: the amount excludes VAT. extract: the amount already includes VAT. |
| supply | string | – | standard for most supplies; financial_services for VAT on financial services. |
Structured output declared, but exposes no named fields.
No examples provided.
calculate_withholding_tax ~328
Withholding tax (WHT / AIT) the payer must deduct from a payment and pay to the IRD. Handles the Rs. 100,000 monthly thresholds for service fees and rent (once exceeded, WHT applies to the full payment), exempt small lottery winnings, and grossing up when the payer bears the tax.
| Name | Type | Req | Description |
|---|---|---|---|
| amount | – | yes | The payment in rupees, excluding VAT. With payer_bears_tax, the amount the payee must receive. |
| month_total | – | – | For service fees and rent: total paid to this person in the calendar month, including this payment. WHT only applies once this exceeds Rs. 100,000. Defaults to the amount. |
| payer_bears_tax | boolean | – | True if the payer pays the WHT on top so the payee receives the amount in full. |
| payment_date | – | – | Date the rules apply to, as YYYY-MM-DD (e.g. the pay date or invoice date). Defaults to today. |
| payment_type | string | yes | service_fee: fees to a resident individual who isn't an employee (teaching, commissions, independent professionals). interest: interest or discount. rent_resident: rent to a resident. dividend. winni… |
Structured output declared, but exposes no named fields.
No examples provided.
check_sscl_registration ~95
Whether a business must register for SSCL, given its aggregate turnover. Give at least one figure.
| Name | Type | Req | Description |
|---|---|---|---|
| on_date | – | – | Date the rules apply to, as YYYY-MM-DD (e.g. the pay date or invoice date). Defaults to today. |
| quarter_turnover | – | – | Aggregate turnover for the quarter, in rupees. |
| turnover_4_quarters | – | – | Aggregate turnover for four consecutive quarters, in rupees. |
Structured output declared, but exposes no named fields.
No examples provided.
check_vat_registration ~121
Whether a business must register for VAT, given its taxable supplies. Give at least one figure. Uses the registration thresholds in force on the date (supplies other than financial services).
| Name | Type | Req | Description |
|---|---|---|---|
| on_date | – | – | Date the rules apply to, as YYYY-MM-DD (e.g. the pay date or invoice date). Defaults to today. |
| period_turnover | – | – | Taxable supplies in the taxable period (usually a quarter), in rupees. |
| turnover_12_months | – | – | Taxable supplies in the 12 months then ending, in rupees. |
Structured output declared, but exposes no named fields.
No examples provided.
get_rule_history ~76
Every version of a tax's rules since 1 January 2023: what changed, when, and the IRD source. Use this for questions like "what changed for SSCL in 2026?" or "when did VAT go to 18%?".
| Name | Type | Req | Description |
|---|---|---|---|
| tax | string | yes | Which tax's history to return. |
Structured output declared, but exposes no named fields.
No examples provided.
get_tax_rules ~108
The rates, bands and thresholds of a tax in force on a date, with their IRD sources. Use this to answer "what is the current VAT rate?" or "what were the APIT bands in 2024?". For withholding tax, returns every payment type.
| Name | Type | Req | Description |
|---|---|---|---|
| on_date | – | – | Date the rules apply to, as YYYY-MM-DD (e.g. the pay date or invoice date). Defaults to today. |
| tax | string | yes | Which tax's rules to return. |
Structured output declared, but exposes no named fields.
No examples provided.
How do I install the Sri Lanka Tax (lk-tax) MCP server?
Sri Lanka Tax (lk-tax) runs locally as a PyPI package, launched with uvx lk-tax-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 · lk-tax-mcp
claude mcp add shalomhunukumbura-lk-tax-mcp -- uvx lk-tax-mcp
What is the Sri Lanka Tax (lk-tax) MCP server?
Sri Lanka Tax (lk-tax) is an MCP server listed in the public MCP registry as io.github.ShalomHunukumbura/lk-tax-mcp. Exact, sourced Sri Lankan tax calculations: APIT, income tax, withholding tax, VAT and SSCL. This page covers its PyPI package (lk-tax-mcp).
Is the Sri Lanka Tax (lk-tax) MCP server safe to use?
Sri Lanka Tax (lk-tax) scores 54 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 18 October 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 Sri Lanka Tax (lk-tax) MCP server expose?
Sri Lanka Tax (lk-tax) exposes 9 tools: calculate_salary_tax, calculate_annual_income_tax, calculate_withholding_tax, calculate_vat, check_vat_registration, and 4 more. Their descriptions and schemas cost roughly 1,328 tokens of context every time the server is loaded.
Is the Sri Lanka Tax (lk-tax) MCP server still maintained?
Sri Lanka Tax (lk-tax) is still listed as active in the MCP registry. We last reached this channel on 18 October 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 Sri Lanka Tax (lk-tax) MCP server under?
Sri Lanka Tax (lk-tax) declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.