BizVerify vs Irs Taxpayer
A side-by-side look at the BizVerify and Irs Taxpayer MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose BizVerify for finance & fintech work over a hosted endpoint; choose Irs Taxpayer for finance & fintech as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose BizVerify when
- You need dedicated capabilities in the Finance & Fintech domain.
- You prefer a remote HTTP/SSE transport.
- Its auth model fits you: No auth required.
- You have the keys it needs:
BIZVERIFY_API_KEY, BIZVERIFY_MCP_URL. - You want tools like
get_config, list_jurisdictions, verify_business.
Choose Irs Taxpayer when
- You need dedicated capabilities in the Finance & Fintech domain.
- You prefer a local stdio subprocess transport.
- You want tools like
calculate_federal_tax, get_tax_brackets, compare_filing_statuses.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Finance & Fintech | Finance & Fintech |
| Quality signal | 66/100 · Great | 63/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Local subprocess (stdio) |
| Auth | No auth required | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | BIZVERIFY_API_KEYBIZVERIFY_MCP_URL | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 13 |
| Directory activity | 0 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | 9 | 44 |
| Full listing | View BizVerify | View Irs Taxpayer |
Tools & capabilities
BizVerify tools 9
get_configReturns BizVerify's public configuration as readable text: active US and international jurisdictions, per-operation credit costs, the free-tier allowance, credit packages with pricing, feature flags, and documentation/legal links. Free and requires no authentication. Call this first to discover what jurisdictions are supported and what each operation costs before verifying.list_jurisdictionsLists every registered jurisdiction with its code, active/inactive status, and supported capabilities — search, entity lookup, quick verification, and deep verification. Free and requires no authentication. Use it to confirm a state or country is supported and which verification tiers it offers before calling verify_business or search_entities.verify_businessConfirm a specific, named business in one jurisdiction — the PRIMARY tool whenever the user wants to verify, check, confirm, or look up a company's existence, status, good standing, or details (e.g. "verify Acme LLC in Delaware", "is Acme registered in FL?", "I need to verify a company in Delaware"). If the user has verification intent but has not given the exact company name, ASK them for the name and use THIS tool — do NOT fall back to search_entities. Two tiers: quick (1 credit) returns existence + status + good-standing. Deep (15 credits, or 25 with force_refresh) adds entity type, formation date, registered agent, officers, principal address, and filing history. Deep is available in a subset of jurisdictions; requesting deep where unavailable returns a quick result with a reason. Requires authentication. A completed verification deducts credits whether or not the business is found — a confirmed no-match is a result. Calls that cannot produce an answer (source unavailable or timed out) are refunded.search_entitiesDiscover candidate businesses when the exact entity is UNKNOWN — a listing/discovery tool, NOT a verification tool. Use only when the user wants to browse or list multiple companies matching a partial or fuzzy name, or does not yet know which specific entity they mean. If the user can name one specific company they want to confirm or check, use verify_business instead (ask them for the name first if needed). Costs 2 credits per jurisdiction searched and requires authentication.check_job_statusPoll a long-running (async) verification job created by verify_business. Returns the full verification result once complete, a failure reason if it failed, or a "still processing" status to poll again. Free — no credits charged — but requires authentication. Pass the job_id from the verify_business async response.get_entityFetch a previously verified business entity from BizVerify's cache by its ID — returns name, jurisdiction, status, type, good-standing, formation date, registered agent, and the number of snapshots on record. Free and read-only; does NOT fetch a fresh live result (use verify_business with force_refresh for live data). Requires authentication. Pass an entity_id returned by a prior verify_business or search_entities call.get_entity_historyReturns the chronological verification snapshots recorded for an entity — each with a timestamp, name, and status — newest first, with pagination. Costs 5 credits and requires authentication. Use it to see how a company's status or details have changed over time.get_accountReturns your BizVerify account summary: email and verification status, plan, current credit balance, member-since date, and your active and revoked API keys. Free and read-only; requires authentication. Use it to check your remaining credit balance before running paid verifications.purchase_creditsStarts a credit purchase: creates a Stripe checkout session for the chosen package and returns a payment URL to present to the user. Does NOT charge immediately and does NOT add credits until the user completes payment — credits are then added automatically. Requires authentication. Packages: credits_100, credits_500, credits_2000, credits_10000 (see get_config for current prices).
Irs Taxpayer tools 44
calculate_federal_taxCalculate federal income tax for an individual taxpayer. Supports TY2024 through TY2026. Includes bracket breakdown, effective/marginal rates, SE tax, NIIT, Additional Medicare Tax, QBI deduction, capital gains, and child tax credit. All calculations run locally — no data is sent to any server.get_tax_bracketsGet federal income tax brackets and standard deduction for a given tax year and filing status.compare_filing_statusesCompare tax liability across different filing statuses for the same income. Helps determine the most advantageous filing status.estimate_quarterly_taxCalculate estimated quarterly tax payments (Form 1040-ES) for self-employed or other taxpayers who need to make estimated payments.calculate_total_taxCalculate combined federal + state tax for a complete picture of total tax liability. Returns federal breakdown, state tax, and combined totals in one call.calculate_w4_withholdingCalculate recommended W-4 withholding settings. Estimates per-paycheck federal tax and provides step-by-step W-4 form recommendations.list_deductionsList available tax deductions with eligibility rules and limits. Covers both above-the-line and itemized deductions.standard_vs_itemizedCompare standard deduction vs itemized deductions to determine which is more beneficial.get_tax_deadlinesGet important IRS tax deadlines and due dates for a given tax year.check_refund_statusProvide instructions on how to check IRS refund status. This tool does NOT access your IRS account — it provides the official links and requirements.get_irs_form_infoGet information about common IRS tax forms — what they are, who needs them, and where to find them.list_tax_creditsList available federal tax credits with eligibility, amounts, and phase-out rules. Covers family, education, energy, retirement, healthcare, and income-based credits.- +32 more on the listing page
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
BizVerify
{
"mcpServers": {
"bizverify-2": {
"url": "https://api.bizverify.co/mcp"
}
}
}
Irs Taxpayer
{
"mcpServers": {
"irs-taxpayer": {
"command": "npx",
"args": [
"-y",
"irs-taxpayer-mcp"
]
}
}
}
Frequently asked questions
BizVerify is categorized under Finance & Fintech and uses a remote HTTP/SSE transport. Irs Taxpayer belongs to Finance & Fintech and uses a local stdio subprocess. Pick BizVerify for finance & fintech work and Irs Taxpayer for finance & fintech.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
BizVerify has no declared pricing — check the project's own site. Auth: no auth required. Irs Taxpayer has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add bizverify-2 and irs-taxpayer as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, BizVerify has a quality signal of 66/100 (Great) with 0 views, 0 installs and 0 GitHub stars. Irs Taxpayer has 63/100 (Good) with 1 views, 0 installs and 13 GitHub stars.