io.github.dma9527/irs-taxpayer
NPM · IRS-TAXPAYER-MCP · SCANNED SEP 21
44 local US tax estimation and planning tools for supported TY2024 through TY2026 scenarios.
Available components
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
- 31 of 96 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 2 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability61
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 7542 tokens (~171/item across 44 items; 44 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 Management94
- Stability check failed: the tool surface changed between 0.5.3 and 1.1.0: 0 tool removals, 2 breaking changes, 2 additions. See how to fix → Fail
Tool Coverage93
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 75% 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 44 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 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
{
"mcpServers": {
"dma9527-irs-taxpayer": {
"command": "npx",
"args": [
"-y",
"irs-taxpayer-mcp"
]
}
}
} {
"servers": {
"dma9527-irs-taxpayer": {
"command": "npx",
"args": [
"-y",
"irs-taxpayer-mcp"
]
}
}
} codex mcp add dma9527-irs-taxpayer -- npx -y irs-taxpayer-mcp
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"dma9527-irs-taxpayer": {
"type": "local",
"command": [
"npx",
"-y",
"irs-taxpayer-mcp"
],
"enabled": true
}
}
} openclaw mcp add dma9527-irs-taxpayer --command npx --arg -y --arg irs-taxpayer-mcp
mcp_servers:
dma9527-irs-taxpayer:
command: "npx"
args: ["-y", "irs-taxpayer-mcp"] {
"McpServers": {
"dma9527-irs-taxpayer": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"irs-taxpayer-mcp"
]
}
}
} assistant mcp add dma9527-irs-taxpayer -t stdio -c npx -a -y irs-taxpayer-mcp
{
"mcpServers": {
"dma9527-irs-taxpayer": {
"command": "npx",
"args": [
"-y",
"irs-taxpayer-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.
- 21 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 91 to 94.
- 19 Sept 26 +16
- Malware scan: unverified → pass ▲ security
- 18 Sept 26 −15
- Malware scan: pass → unverified ▼ security
- Package version: 1.0.2 → 1.1.0 functional
- 16 Sept 26 −2
No change was recorded against any check on this day. Stability & Change Management went from 98 to 78.
- 14 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 91 to 94.
- 12 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 84 to 88.
- 10 Sept 26 −2
No change was recorded against any check on this day. Stability & Change Management went from 98 to 81.
- 9 Sept 26 +15
- Malware scan: unverified → 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 21 Sept 2026 · Analysed npm/irs-taxpayer-mcp@1.1.0
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/v1.1.0 |
| Rekor log index | 2886136455 |
| Predicate type | https://slsa.dev/provenance/v1 |
| Subject digest | sha512:5f841c9799355d26aff7b5c4975c9c169cc222545e6f9fcf35ebe1f099430f7e707d1ca2e5c0243fe773312cc186ddd0e0d75dd5f87615e812c501ec9 |
Background: How many MCP packages publish verified provenance →
Dependencies 96 packages
| Packages resolved | 96 |
|---|---|
| Stale | 31 |
| 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 →
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 ~243
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 |
|---|---|---|---|
| currentCapitalGains | number | – | – |
| currentDependents | integer | – | – |
| currentIncome | number | yes | Current gross income |
| currentItemizedDeductions | number | – | – |
| currentSelfEmployment | number | – | – |
| currentState | string | – | Current state code |
| filingStatus | string | yes | – |
| taxYear | number | yes | Tax year |
| whatIfAdditional401k | number | – | Additional 401k contribution |
| whatIfFilingStatus | – | – | 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 ~156
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 |
| filingStatus | string | yes | – |
| medicalExpenses | number | – | Unreimbursed medical expenses |
| mortgageInterest | number | – | Home mortgage interest paid |
| 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.
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. 44 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 21 September 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 44 tools: calculate_federal_tax, get_tax_brackets, compare_filing_statuses, estimate_quarterly_tax, calculate_total_tax, and 39 more. Their descriptions and schemas cost roughly 7,542 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 21 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 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.