io.github.dma9527/irs-taxpayer
NPM · IRS-TAXPAYER-MCP
45 local US tax estimation and planning tools for supported TY2024 through TY2026 scenarios.
Available components
Last scanned (4 hours ago)
Scores higher than 93% of npm 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 Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 30 of 92 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to dma9527/irs-taxpayer-mcp). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 3 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability58
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 8889 tokens (~197/item across 45 items; 45 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 Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage94
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 77% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "check_refund_status" implies "refund" and declares readOnlyHint instead, contradicting what its own name says it does. See how to fix → Fail
- An AI judge read all 45 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
Checks we ran (16)
- Malware scan
- Known CVEs
- Install scripts
- Dependency health
- Source repository
- Provenance
- License
- Maintenance
- Security disclosure
- Schema quality
- Stability
- Tool coverage
- Injection markers
- Destructive annotations
- Judged manipulation
- MCP protocol
Does not apply to this package (2)
- Endpoint SecurityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
- Transport & ReachabilityScored on hosted endpoints only. A package has no live endpoint of its own for us to probe.
The score does not measure everything. What the score does not measure →
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.
- 4 Nov 26 0
- Security disclosure: unverified → fail ▼ functional
- 3 Nov 26 +15
- Malware scan: unverified → pass ▲ security
- Security disclosure: fail → unverified ▼ functional
- Package version: 1.2.2 → 1.2.4 functional
- 2 Nov 26 −11
- Malware scan: pass → unverified ▼ security
- CVE-2023-54404 no longer affects this package ▲ security
- CVE-2026-111767 no longer affects this package ▲ security
- CVE-2026-104850 no longer affects this package ▲ security
- CVE-2026-111768 no longer affects this package ▲ security
- CVE-2026-111771 no longer affects this package ▲ security
- CVE-2026-111769 no longer affects this package ▲ security
- GHSA-f897-62hf-6gxq no longer affects this package ▲ security
- Known CVEs: fail → pass ▲ security
- Schema quality: 171 → 195 ▼ functional
- Schema quality: 7542 → 8414 ▼ functional
- Package version: 1.1.0 → 1.2.2 functional
- Package version: 1.1.0 → 1.2.1 functional
- 1 Nov 26 +1
- Stability: 0.97 → pass security
- 31 Oct 26 −1
- Stability: pass → 0.97 functional
- 28 Oct 26 0
- GHSA-f897-62hf-6gxq affects this package: high ▼ security
- 25 Oct 26 +1
- Stability: 0.97 → pass security
- 24 Oct 26 −1
- CVE-2023-54404 affects this package: high ▼ security
- Stability: pass → 0.97 functional
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 6 Nov 2026 · Analysed npm/irs-taxpayer-mcp@1.2.4
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | dma9527/irs-taxpayer-mcp |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/dma9527/irs-taxpayer-mcp/.github/workflows/publish.yml@refs/tags/v1.2.4 |
| Rekor log index | 3659881175 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:6a5ac101429ff84ba1089bfdb42f267c8128b198994e104c7923ca4d082282f934179315029d0157c690199bcce9ae33fe922aab2eedad4c963ef408e |
Background: How many MCP packages publish verified provenance →
Dependencies 92 packages
| Packages resolved | 92 |
|---|---|
| Stale | 30 |
| 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 →
plan_multi_year_taxes ~67
Create a 3-5 year tax projection and strategy. Models income changes, Roth conversions, retirement contributions, and bracket management across multiple years.
| Name | Type | Req | Description |
|---|---|---|---|
| currentAge | integer | yes | – |
| filingStatus | string | yes | – |
| years | array | yes | Year-by-year projections |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | – |
| isError | boolean | yes | – |
| text | string | yes | – |
No examples provided.
plan_retirement_withdrawals ~160
Plan tax-efficient retirement withdrawals. Determines optimal order to draw from Traditional IRA, Roth IRA, and taxable accounts to minimize lifetime tax.
| Name | Type | Req | Description |
|---|---|---|---|
| age | integer | yes | Your current age |
| annualSpending | number | yes | Annual spending need (pre-tax) |
| filingStatus | string | yes | – |
| pensionIncome | number | – | Annual pension income |
| rothBalance | number | yes | Roth IRA/401k balance |
| rothConversionInterest | boolean | – | Interested in Roth conversion strategy? |
| socialSecurityIncome | number | – | Annual Social Security income |
| taxYear | number | yes | Tax year |
| taxableBalance | number | yes | Taxable brokerage account balance |
| traditionalBalance | number | yes | Traditional IRA/401k balance |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | – |
| isError | boolean | yes | – |
| text | string | yes | – |
No examples provided.
process_1099_income ~176
Process multiple 1099 forms and calculate the tax impact of each income type. Handles 1099-NEC (freelance), 1099-INT (interest), 1099-DIV (dividends), 1099-B (investments), 1099-MISC.
| Name | Type | Req | Description |
|---|---|---|---|
| filingStatus | string | yes | – |
| forms | array | yes | Array of 1099 forms |
| longTermCapitalLossCarryover | number | – | – |
| qualifiedBusinessIsSstb | boolean | – | – |
| qualifiedBusinessPropertyBasis | number | – | – |
| qualifiedBusinessW2Wages | number | – | – |
| shortTermCapitalLossCarryover | number | – | – |
| taxYear | number | yes | Tax year |
| w2Income | number | – | W-2 income (for context) |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | – |
| isError | boolean | yes | – |
| text | string | yes | – |
No examples provided.
run_tax_health_check ~224
One-click tax health check. Analyzes your full financial picture and outputs a report with actionable findings: missed credits, withholding accuracy, deduction optimization, audit risk, retirement savings gaps, and year-end planning tips.
| Name | Type | Req | Description |
|---|---|---|---|
| age | integer | – | – |
| boughtEV | boolean | – | – |
| capitalGains | number | – | – |
| charitableDonations | number | – | – |
| dependents | integer | – | – |
| federalWithheld | number | – | – |
| filingStatus | string | yes | – |
| grossIncome | number | yes | – |
| hasHealthInsurance | boolean | – | – |
| hsaContributions | number | – | – |
| installedSolar | boolean | – | – |
| isStudent | boolean | – | – |
| mortgageInterest | number | – | – |
| retirement401k | number | – | – |
| retirementIRA | number | – | – |
| selfEmploymentIncome | number | – | – |
| stateCode | string | – | – |
| stateLocalTaxes | number | – | – |
| taxYear | number | yes | Tax year |
| w2Income | number | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | – |
| isError | boolean | yes | – |
| text | string | yes | – |
No examples provided.
simulate_tax_scenario ~491
What-if tax scenario simulator. Compare your current situation against a hypothetical change: income change, relocation, Roth conversion, filing status change, etc. Shows the exact tax impact of the change.
| Name | Type | Req | Description |
|---|---|---|---|
| age65OrOlder | boolean | – | Taxpayer is 65 or older |
| charitableCashContributions | number | – | TY2026+: qualifying cash gifts to public charities for the non-itemizer deduction |
| currentCapitalGains | number | – | – |
| currentDependents | integer | – | – |
| currentIncome | number | yes | Current gross income |
| currentItemizedDeductions | number | – | – |
| currentSelfEmployment | number | – | – |
| currentState | string | – | Current state code |
| dependentCareExpenses | number | – | Form 2441 work-related care expenses paid |
| dependentCareQualifyingIndividuals | integer | – | Qualifying individuals for the Child and Dependent Care Credit |
| filingStatus | string | yes | – |
| itemizedCharitableContributions | number | – | TY2026+: charitable portion of itemized deductions, for the 0.5% of AGI floor |
| itemizedStateAndLocalTaxes | number | – | Capped SALT inside currentItemizedDeductions; added back for AMT (Form 6251 line 2a) |
| qualifiedOvertimeCompensation | number | – | TY2025+ Schedule 1-A: FLSA overtime premium |
| qualifiedTips | number | – | TY2025+ Schedule 1-A: qualified tips |
| qualifiedVehicleLoanInterest | number | – | TY2025+ Schedule 1-A: interest on a new US-assembled personal vehicle loan |
| spouseAge65OrOlder | boolean | – | Spouse is 65 or older |
| taxYear | number | yes | Tax year |
| whatIfAdditional401k | number | – | Additional 401k contribution |
| whatIfFilingStatus | string | – | New filing status |
| whatIfIncomeChange | number | – | Income change amount (positive = more income, negative = less) |
| whatIfItemizedChange | number | – | Change in itemized deductions |
| whatIfNewDependents | integer | – | New number of dependents |
| whatIfNewState | string | – | New state if relocating |
| whatIfRothConversion | number | – | Amount to convert from Traditional to Roth IRA |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | – |
| isError | boolean | yes | – |
| text | string | yes | – |
No examples provided.
standard_vs_itemized ~195
Compare standard deduction vs itemized deductions to determine which is more beneficial.
| Name | Type | Req | Description |
|---|---|---|---|
| age65OrOlder | boolean | – | – |
| agi | number | yes | Adjusted Gross Income (needed for medical expense threshold) |
| blind | boolean | – | – |
| charitableDonations | number | – | Charitable contributions claimed on Schedule A |
| filingStatus | string | yes | – |
| medicalExpenses | number | – | Unreimbursed medical expenses |
| mortgageInterest | number | – | Home mortgage interest paid |
| nonItemizerCashDonations | number | – | TY2026+: qualifying cash gifts to public charities (not donor-advised funds) for the non-itemizer deduction |
| otherItemized | number | – | Other itemized deductions |
| stateLocalTaxes | number | – | State/local income + property taxes paid |
| taxYear | number | yes | Tax year (2024, 2025, or 2026) |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | – |
| isError | boolean | yes | – |
| text | string | yes | – |
No examples provided.
submit_feedback ~110
Generate a pre-filled GitHub Issue URL for reporting calculation errors or data issues. No data is sent. The user clicks the link to submit. Use this after verifying the user's inputs.
| Name | Type | Req | Description |
|---|---|---|---|
| actual | string | – | What the tool returned |
| description | string | yes | Brief description of the issue |
| expected | string | – | What the user expected |
| taxYear | number | – | Tax year |
| toolName | string | yes | Which tool produced the issue (e.g., calculate_federal_tax) |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | – |
| isError | boolean | yes | – |
| text | string | yes | – |
No examples provided.
what_changed_between_tax_years ~105
Show all differences between two tax years — bracket changes, deduction limits, credit amounts, SALT cap, CTC, and new OBBB provisions. Great for understanding how tax law changes affect you.
| Name | Type | Req | Description |
|---|---|---|---|
| filingStatus | string | – | Filing status for specific comparisons (default: single) |
| fromYear | number | yes | Earlier tax year (e.g., 2024) |
| toYear | number | yes | Later tax year (e.g., 2025) |
| Name | Type | Req | Description |
|---|---|---|---|
| error | object | – | – |
| isError | boolean | yes | – |
| text | string | yes | – |
No examples provided.
How do I install the io.github.dma9527/irs-taxpayer MCP server?
io.github.dma9527/irs-taxpayer runs locally as an npm package, launched with npx -y irs-taxpayer-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · irs-taxpayer-mcp
claude mcp add dma9527-irs-taxpayer -- npx -y irs-taxpayer-mcp
What is the io.github.dma9527/irs-taxpayer MCP server?
io.github.dma9527/irs-taxpayer is an MCP server listed in the public MCP registry as io.github.dma9527/irs-taxpayer. 45 local US tax estimation and planning tools for supported TY2024 through TY2026 scenarios. This page covers its npm package (irs-taxpayer-mcp).
Is the io.github.dma9527/irs-taxpayer MCP server safe to use?
io.github.dma9527/irs-taxpayer scores 89 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 6 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. 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 io.github.dma9527/irs-taxpayer MCP server expose?
io.github.dma9527/irs-taxpayer exposes 45 tools: calculate_federal_tax, get_tax_brackets, compare_filing_statuses, estimate_quarterly_tax, calculate_total_tax, and 40 more. Their descriptions and schemas cost roughly 8,889 tokens of context every time the server is loaded.
Is the io.github.dma9527/irs-taxpayer MCP server still maintained?
io.github.dma9527/irs-taxpayer is still listed as active in the MCP registry. We last reached this channel on 6 November 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 io.github.dma9527/irs-taxpayer MCP server under?
io.github.dma9527/irs-taxpayer declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.
What did VerifyMCP test on the io.github.dma9527/irs-taxpayer MCP server?
VerifyMCP ran 16 checks on io.github.dma9527/irs-taxpayer, covering Malware scan, Known CVEs, Install scripts, Dependency health and 12 more. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.