{ "data": { "a": { "slug": "numeral", "name": "Numeral", "vendor": "Numeral Two, Inc.", "vendorUrl": "https://www.numeral.com", "kind": "http-api", "category": "tax", "summary": "Numeral is a hosted sales tax and VAT compliance service from Numeral Two, Inc. Its REST API calculates tax, records transactions and refunds, and manages exempt customers, and Numeral registers and files. A remote MCP server reads the account.", "url": "https://www.anchorterminal.com/tools/numeral", "markdownUrl": "https://www.anchorterminal.com/tools/numeral.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/numeral.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/numeral.json", "repo": "https://github.com/NumeralHQ/numeral-tax-go", "license": "Proprietary service under Numeral's terms of service. The Go, Python and Node SDKs are Apache-2.0", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.numeralhq.com", "packages": [ { "registry": "go", "name": "github.com/NumeralHQ/numeral-tax-go" }, { "registry": "pypi", "name": "numeral-tax" }, { "registry": "npm", "name": "numeral-tax" } ], "auth": "api-key", "authNotes": "The API and the MCP server take a secret API key as a Bearer token, `sk_test_` for the sandbox or `sk_prod_` for live data. Keys are created and revoked in the dashboard at dashboard.numeralhq.com under Developers. No scopes, expiry or OAuth flow were found, and publishable keys are rejected by the MCP server. Dashboard access starts with the get-started form or a demo, and the product page says to book a demo before generating test keys. MCP write tools are enabled per account on request.", "pricing": "paid", "pricingNotes": "Professional is $75 per filing and $150 per state registration, month to month. The tax engine and API are listed under Enterprise at a custom price. Monitoring (nexus study and alerts) is free. Test keys record transactions with no charges or remittance, but no self-serve signup was found and whether a free account can create keys isn't stated (https://www.numeral.com/pricing, checked 2026-10-08).", "priceSummary": "$75 / tx", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI spec or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": 14, "popularity": { "githubStars": 0, "npmWeekly": 9, "pypiWeekly": 19, "asOf": "2026-10-08" }, "docsUrl": "https://docs.numeral.com", "llmsTxt": "https://docs.numeral.com/llms.txt", "openapi": "https://docs.numeral.com/api-reference/v2026-03-01/openapi.json", "capabilities": [ "tax.calculate", "tax.transactions", "tax.exemptions", "tax.filing" ], "tags": [ "hosted", "paid", "closed-source", "api-key", "mcp", "openapi", "llms-txt", "sandbox", "sales-led", "go", "python", "typescript" ], "lastRelease": "2026-09-15", "graded": true, "anchor": { "graded": true, "score": 49.3, "grade": "D", "agentReady": false, "rank": 611, "ranked": true, "rankOf": 722, "categoryRank": 10, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 71, "maintenance": 60, "payments": 10, "reliability": 25, "schema": 87, "security": 47, "transparency": 45 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "Docs are written for agents, with a public OpenAPI spec for 32 operations, Markdown pages, llms.txt and a remote MCP server whose 14 tools are read-only by default. No status page, numeric rate limit or SLA was found, the API ignores idempotency keys, and API access is sold on a custom plan after a demo.", "bestFor": "An agent working for a seller or platform that has a Numeral account and needs tax at checkout, committed transactions for filing, and read access to nexus, registrations and filings through MCP.", "strengths": [ "Public OpenAPI 3.0.1 spec for version 2026-03-01 with 32 operations, 74 schemas and 57 enums, plus llms.txt and a Markdown copy of every docs page", "Remote MCP server at `https://mcp.numeralhq.com/mcp` documents 14 read-only tools. Four write tools are off by default and absent from `tools/list` until enabled", "Date-versioned API selected with the `X-API-Version` header, with a changelog and migration notes for each of four versions", "Errors are flat JSON with `code`, `type` and `message`, and the docs list every `type`. MCP tool errors carry a stable `error_code`", "`sk_test_` keys read and write sandbox data only, and the docs say revoking a key takes effect immediately" ], "weaknesses": [ "No status page, uptime SLA or numeric rate limit was found. The product page says rate limits can be removed on request", "The API ignores an `Idempotency-Key` header. A retried commit is safe only if the client handles `REFERENCE_ORDER_ID_ALREADY_EXISTS`", "Secret keys carry no scopes, and the MCP server has no OAuth flow. One key reads all of the account's tax data", "API access is listed under the Enterprise plan at a custom price, and the product page says to book a demo first", "SDKs are early. Go is v0.1.0, `numeral-tax` on PyPI is 0.1.0a1 from December 2025 and on npm is 0.1.0-alpha.2" ], "agentNotes": [ "Send `X-API-Version: 2026-03-01` on every call to `https://api.numeralhq.com`. Merchant, platform and certificate endpoints reject requests without it", "Commit with a stable `reference_order_id`. On `REFERENCE_ORDER_ID_ALREADY_EXISTS` look up the existing transaction, because `Idempotency-Key` is ignored", "Commit before the calculation's `expires_at`. If it has expired, calculate again and commit the new `calculation_id` with the original `reference_order_id`", "Send `amount` as the line total in minor units to `/tax/calculations` and as the per-unit price to `/tax/platform/calculations`", "Start with an `sk_test_` key. Certificate endpoints and MCP certificate tools are live only and answer `TESTMODE_NOT_SUPPORTED` or `live_mode_required`" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 49.3 } ], "editorialScores": { "ergonomics": 71, "maintenance": 60, "payments": 10, "reliability": 25, "schema": 87, "security": 47, "transparency": 36 }, "provenanceScore": 53 }, "connect": { "install": "go get -u 'github.com/NumeralHQ/numeral-tax-go@v0.1.0'", "http": "curl --request POST \\\n --url https://api.numeralhq.com/tax/calculations \\\n --header 'Authorization: Bearer \u003ctoken\u003e' \\\n --header 'Content-Type: application/json' \\\n --header 'X-API-Version: 2026-03-01' \\\n --data '{ ... }'", "claudeCode": "claude mcp add --transport http numeral https://mcp.numeralhq.com/mcp \\\n --header \"Authorization: Bearer sk_test_...\"", "config": { "mcpServers": { "numeral": { "headers": { "Authorization": "Bearer sk_test_..." }, "type": "http", "url": "https://mcp.numeralhq.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/tax.calculate", "tool": "https://letme.dev/numeral" }, "area": "domain-data", "unitPrices": [ { "item": "Filed return, Professional", "unit": "tx", "usd": 75, "note": "Per return filed. API access is listed under Enterprise at a custom price" }, { "item": "State registration, Professional", "unit": "tx", "usd": 150, "note": "One-time fee per state" } ], "provenance": { "legalEntity": "Numeral Two, Inc.", "domain": "numeral.com", "domainRegistered": "1997-10-02", "endpointOnVendorDomain": false, "terms": "https://www.numeral.com/legal/terms-of-service", "privacy": "", "statusPage": "", "changelog": "https://docs.numeral.com/api-reference/v2026-03-01/changelog", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms of service (last updated 10 June 2025) name Numeral Two, Inc. d/b/a Numeral, 527 Howard St, San Francisco, and are governed by California law.", "The API answers at api.numeralhq.com and the MCP server at mcp.numeralhq.com, a second domain. Numeral's docs name both hosts, and the dashboard is at dashboard.numeralhq.com.", "The privacy policy at numeral.com/legal/privacy-policy (effective 11 May 2026) covers the websites and says it does not apply to data processed through the platform and APIs. The privacy link here is the Data Processing Agreement (last updated 2 January 2024), which governs that data.", "www.numeral.com/.well-known/security.txt returns 404, as do the same paths on www.numeralhq.com and api.numeralhq.com.", "No status page was found on the site, the docs or the help centre.", "The trust centre at security.numeral.com is a Oneleet page drawn by script, which we couldn't read.", "RDAP gives registration dates of 1997-10-02 for numeral.com and 2022-07-14 for numeralhq.com." ], "score": 53 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/numeral.json", "live": { "slug": "numeral", "probe": { "target": "https://api.numeralhq.com", "method": "get", "lastAt": "2026-10-08T21:12:16.935226704Z", "lastOk": true, "lastStatus": 200, "lastMs": 602, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 606, "p95ms24h": 672, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "updatedAt": "2026-10-08T21:12:16.935226704Z" } }, "answer": "TaxCloud scores 57.4 (C) on agent readiness against Numeral's 49.3 (D), and leads in 3 of 7 scored categories. Numeral leads on schema \u0026 documentation and agent ergonomics.", "b": { "slug": "taxcloud", "name": "TaxCloud", "vendor": "The Federal Tax Authority, LLC (TaxCloud)", "vendorUrl": "https://taxcloud.com", "kind": "http-api", "category": "tax", "summary": "TaxCloud is a US sales tax service from The Federal Tax Authority, LLC. Its v3 REST API calculates tax on carts, records orders and refunds for filing, stores exemption certificates, verifies addresses and searches product tax codes.", "url": "https://www.anchorterminal.com/tools/taxcloud", "markdownUrl": "https://www.anchorterminal.com/tools/taxcloud.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/taxcloud.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/taxcloud.json", "repo": "https://github.com/FedTax/taxcloud-agent-skills", "license": "Proprietary service under TaxCloud's terms of service. The agent skills repository on GitHub is Apache-2.0", "transports": [ "http" ], "remoteUrl": "https://api.v3.taxcloud.com", "packages": [], "auth": "api-key", "authNotes": "A self-serve API key, generated by a signed-in user at Developer \u003e API in the web app and sent as `X-API-KEY`. Each request also carries a connection ID in the path, created at Integrations \u003e Custom API. The v3 APIs accept a JWT as `Authorization: Bearer` too, and the docs direct integrations to the key. Keys can be listed, created and deleted through the Management API, where creating one needs a signed-in user token. No OAuth, app review or partner approval applies.", "pricing": "paid", "pricingNotes": "The API needs the Premium plan, from $79 a month for 200 orders, with eight public tiers up to $1,299 for 40,000. Each calculation or address verification counts as a tenth of an order. A 30-day trial with Premium access needs no card, so an agent's owner can start without a contract. There is no sandbox (checked 2026-10-08).", "priceSummary": "$79 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API reference, the guides or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 0, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://docs.taxcloud.com/", "llmsTxt": "https://docs.taxcloud.com/llms.txt", "openapi": "https://docs.taxcloud.com/openapi/api-reference.json", "capabilities": [ "tax.calculate", "tax.transactions", "tax.exemptions", "shipping.address-validation" ], "tags": [ "hosted", "closed-source", "api-key", "openapi", "llms-txt", "no-card", "us-only", "status-page", "agent-skills" ], "lastRelease": "2026-09-24", "graded": true, "anchor": { "graded": true, "score": 57.4, "grade": "C", "agentReady": false, "rank": 475, "ranked": true, "rankOf": 722, "categoryRank": 6, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 64, "maintenance": 57, "payments": 34, "reliability": 66, "schema": 75, "security": 45, "transparency": 51 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "A 30-operation REST API with a public OpenAPI 3.1 contract, llms.txt, Markdown docs and a 30-day trial that needs no card. The vendor publishes no rate limit numbers, no SLA, no API changelog and no official v3 client library, and the security page names no audit or certification.", "bestFor": "An agent working for a US seller that needs tax on a cart at checkout, a record of orders and refunds for filing, and exemption certificates by customer.", "strengths": [ "OpenAPI 3.1 documents for the Sales Tax API (16 operations) and Management API (14), plus llms.txt and a Markdown copy of every docs page", "30-day trial with Premium plan access, the API included, and no card or payment method needed", "Refunds take an `idempotencyKey`, carts upsert by `cartId`, and a repeated void returns 204", "Errors are `application/problem+json` with `title`, `status`, `detail` and an `errors` list, which we confirmed on a 401", "Access keys can be listed, created and deleted through the Management API, and the bulk product delete needs a `confirm_delete` parameter" ], "weaknesses": [ "No rate limit numbers are published. The API page says only that the threshold is high and subject to change", "The security page says TaxCloud does not offer an SLA, and the terms supply the service as is", "No API changelog or deprecation policy was found, and the legacy v1 API has no published end date", "No official client library for v3 was found. The vendor's PHP library targets v1 and was last changed in June 2024", "Each calculation or address check counts as a tenth of an order against the plan, test connections included" ], "agentNotes": [ "Send `X-API-KEY` on every call and put the connection ID in the path, as in `/tax/connections/{connectionId}/carts`. A wrong ID returns 404", "Mark nexus states active in the account first. With none active the API returns zero tax and no error", "Use a separate test connection. There is no sandbox, and orders on a live connection go into filing", "Pass a stable `idempotencyKey` on refunds, and never convert the same cart twice. A second conversion creates a duplicate liability", "Void a wrong order before 12:00 AM Eastern on the 10th of the month after its `completedDate`. Later requests return 422" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57.4 } ], "editorialScores": { "ergonomics": 64, "maintenance": 57, "payments": 34, "reliability": 66, "schema": 75, "security": 45, "transparency": 33 }, "provenanceScore": 69 }, "connect": { "install": "npx skills add FedTax/taxcloud-agent-skills", "http": "curl https://api.v3.taxcloud.com/tax/connections/\u003cconnectionId\u003e/ping \\\n -H \"X-API-KEY: \u003capiKey\u003e\" \\\n -H \"Accept: application/json\"", "claudeCode": "claude mcp add --transport http taxcloud-docs https://docs.taxcloud.com/_mcp/server" }, "letme": { "capability": "https://letme.dev/tax.calculate", "tool": "https://letme.dev/taxcloud" }, "area": "domain-data", "unitPrices": [ { "item": "Premium, 200 orders a month", "unit": "month", "usd": 79, "note": "the plan with API access; a calculation or address verification counts as a tenth of an order" }, { "item": "Premium, 400 orders a month", "unit": "month", "usd": 149, "note": "monthly billing" }, { "item": "Premium, 1,000 orders a month", "unit": "month", "usd": 299, "note": "monthly billing" }, { "item": "Premium, 10,000 orders a month", "unit": "month", "usd": 749, "note": "monthly billing" }, { "item": "Starter, 100 orders a month", "unit": "month", "usd": 19, "note": "no API access" }, { "item": "Filing subscription, one return a month", "unit": "month", "usd": 39, "note": "separate from the order plan; surcharges for Colorado and Louisiana" } ], "provenance": { "legalEntity": "The Federal Tax Authority, LLC (d/b/a TaxCloud)", "domain": "taxcloud.com", "domainRegistered": "2003-10-06", "endpointOnVendorDomain": true, "terms": "https://taxcloud.com/legal/tos/", "privacy": "https://taxcloud.com/legal/privacy-policy/", "statusPage": "https://status.taxcloud.com", "changelog": "", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms of service (last updated March 2025) are with The Federal Tax Authority, LLC, a Washington limited liability company, and govern access to and use of the services. No separate API terms were found.", "The privacy policy (last updated 1 February 2025) covers the website including the TaxCloud platform. No data processing agreement or sub-processor list was found on the legal page.", "The API host is api.v3.taxcloud.com and the legacy host is api.taxcloud.net. RDAP gives a registration date of 2003-10-06 for taxcloud.com, with Network Solutions, LLC as registrar.", "status.taxcloud.com redirects to https://taxcloud.statuspage.datadoghq.com, a Datadog status page created on 28 January 2026.", "taxcloud.com/.well-known/security.txt returns 404.", "No changelog was found. docs.taxcloud.com/changelog returns 404." ], "score": 69 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/taxcloud.json", "live": { "slug": "taxcloud", "probe": { "target": "https://api.v3.taxcloud.com", "method": "get", "lastAt": "2026-10-08T21:12:23.03593912Z", "lastOk": true, "lastStatus": 404, "lastMs": 337, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 339, "p95ms24h": 377, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-08", "probes": 21, "ok": 21 } ] }, "vendorStatus": { "page": "https://status.taxcloud.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:39:15.801163493Z" }, "updatedAt": "2026-10-08T21:12:23.03593912Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Numeral Two, Inc.", "b": "The Federal Tax Authority, LLC (TaxCloud)", "name": "Vendor" }, { "a": "https://api.numeralhq.com", "b": "https://api.v3.taxcloud.com", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Paid", "b": "Paid", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Numeral's terms of service. The Go, Python and Node SDKs are Apache-2.0", "b": "Proprietary service under TaxCloud's terms of service. The agent skills repository on GitHub is Apache-2.0", "name": "Licence" }, { "a": "14", "b": "none", "name": "Tools exposed" }, { "a": "yes", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-15", "b": "2026-09-24", "name": "Last release" }, { "a": "no date given", "b": "2025-03-01", "name": "Terms last updated" }, { "a": "no document linked", "b": "2025-02-01", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "0 stars, 9 npm/wk, 19 PyPI/wk", "b": "0 stars", "name": "Popularity" } ], "faq": [ { "answer": "TaxCloud scores 57.4 (C) on agent readiness against Numeral's 49.3 (D), and leads in 3 of 7 scored categories. Numeral leads on schema \u0026 documentation and agent ergonomics.", "question": "Which is better for AI agents, Numeral or TaxCloud?" }, { "answer": "Both need an API key.", "question": "Do Numeral and TaxCloud need an API key?" }, { "answer": "Yes. Numeral has a hosted endpoint at https://api.numeralhq.com and TaxCloud at https://api.v3.taxcloud.com.", "question": "Can an agent call Numeral and TaxCloud without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 87 against 75", "Agent ergonomics, 71 against 64" ], "also": null, "goodFor": "An agent working for a seller or platform that has a Numeral account and needs tax at checkout, committed transactions for filing, and read access to nexus, registrations and filings through MCP.", "slug": "numeral", "watchFor": "No status page, uptime SLA or numeric rate limit was found. The product page says rate limits can be removed on request" }, { "aheadOn": [ "Reliability, 66 against 25", "Payments \u0026 pricing, 34 against 10", "Transparency \u0026 trust, 51 against 45" ], "also": [ "Free to start without a card" ], "goodFor": "An agent working for a US seller that needs tax on a cart at checkout, a record of orders and refunds for filing, and exemption certificates by customer.", "slug": "taxcloud", "watchFor": "No rate limit numbers are published. The API page says only that the threshold is high and subject to change" } ], "job": { "capability": "tax.calculate", "name": "Tax calculate" }, "others": [ { "json": "https://www.anchorterminal.com/compare/anrok-vs-numeral.json", "title": "Anrok vs Numeral", "url": "https://www.anchorterminal.com/compare/anrok-vs-numeral" }, { "json": "https://www.anchorterminal.com/compare/anrok-vs-taxcloud.json", "title": "Anrok vs TaxCloud", "url": "https://www.anchorterminal.com/compare/anrok-vs-taxcloud" }, { "json": "https://www.anchorterminal.com/compare/avalara-vs-numeral.json", "title": "Avalara AvaTax vs Numeral", "url": "https://www.anchorterminal.com/compare/avalara-vs-numeral" }, { "json": "https://www.anchorterminal.com/compare/avalara-vs-taxcloud.json", "title": "Avalara AvaTax vs TaxCloud", "url": "https://www.anchorterminal.com/compare/avalara-vs-taxcloud" }, { "json": "https://www.anchorterminal.com/compare/fonoa-vs-numeral.json", "title": "Fonoa vs Numeral", "url": "https://www.anchorterminal.com/compare/fonoa-vs-numeral" }, { "json": "https://www.anchorterminal.com/compare/fonoa-vs-taxcloud.json", "title": "Fonoa vs TaxCloud", "url": "https://www.anchorterminal.com/compare/fonoa-vs-taxcloud" }, { "json": "https://www.anchorterminal.com/compare/kintsugi-vs-numeral.json", "title": "Kintsugi vs Numeral", "url": "https://www.anchorterminal.com/compare/kintsugi-vs-numeral" }, { "json": "https://www.anchorterminal.com/compare/kintsugi-vs-taxcloud.json", "title": "Kintsugi vs TaxCloud", "url": "https://www.anchorterminal.com/compare/kintsugi-vs-taxcloud" }, { "json": "https://www.anchorterminal.com/compare/numeral-vs-quaderno.json", "title": "Numeral vs Quaderno", "url": "https://www.anchorterminal.com/compare/numeral-vs-quaderno" }, { "json": "https://www.anchorterminal.com/compare/numeral-vs-taxjar.json", "title": "Numeral vs TaxJar", "url": "https://www.anchorterminal.com/compare/numeral-vs-taxjar" }, { "json": "https://www.anchorterminal.com/compare/numeral-vs-vertex-tax.json", "title": "Numeral vs Vertex O Series", "url": "https://www.anchorterminal.com/compare/numeral-vs-vertex-tax" }, { "json": "https://www.anchorterminal.com/compare/numeral-vs-zamp.json", "title": "Numeral vs Zamp", "url": "https://www.anchorterminal.com/compare/numeral-vs-zamp" }, { "json": "https://www.anchorterminal.com/compare/quaderno-vs-taxcloud.json", "title": "Quaderno vs TaxCloud", "url": "https://www.anchorterminal.com/compare/quaderno-vs-taxcloud" }, { "json": "https://www.anchorterminal.com/compare/taxcloud-vs-taxjar.json", "title": "TaxCloud vs TaxJar", "url": "https://www.anchorterminal.com/compare/taxcloud-vs-taxjar" }, { "json": "https://www.anchorterminal.com/compare/taxcloud-vs-vertex-tax.json", "title": "TaxCloud vs Vertex O Series", "url": "https://www.anchorterminal.com/compare/taxcloud-vs-vertex-tax" }, { "json": "https://www.anchorterminal.com/compare/taxcloud-vs-zamp.json", "title": "TaxCloud vs Zamp", "url": "https://www.anchorterminal.com/compare/taxcloud-vs-zamp" } ], "scores": [ { "by": 41, "edge": "taxcloud", "key": "reliability", "name": "Reliability", "numeral": 25, "taxcloud": 66, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 12, "edge": "numeral", "key": "schema", "name": "Schema \u0026 documentation", "numeral": 87, "taxcloud": 75, "weight": 13 }, { "by": 7, "edge": "numeral", "key": "ergonomics", "name": "Agent ergonomics", "numeral": 71, "taxcloud": 64, "weight": 13 }, { "by": 2, "edge": "numeral", "key": "security", "name": "Security \u0026 auth", "numeral": 47, "taxcloud": 45, "weight": 14 }, { "by": 24, "edge": "taxcloud", "key": "payments", "name": "Payments \u0026 pricing", "numeral": 10, "taxcloud": 34, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 3, "edge": "numeral", "key": "maintenance", "name": "Maintenance \u0026 community", "numeral": 60, "taxcloud": 57, "weight": 7 }, { "by": 6, "edge": "taxcloud", "key": "transparency", "name": "Transparency \u0026 trust", "numeral": 45, "taxcloud": 51, "weight": 7 } ], "summary": "TaxCloud scores 57.4 (C) on agent readiness against Numeral's 49.3 (D), and leads in 3 of 7 scored categories. Numeral leads on schema \u0026 documentation and agent ergonomics. Both do tax calculate.", "verdicts": { "numeral": "Docs are written for agents, with a public OpenAPI spec for 32 operations, Markdown pages, llms.txt and a remote MCP server whose 14 tools are read-only by default. No status page, numeric rate limit or SLA was found, the API ignores idempotency keys, and API access is sold on a custom plan after a demo.", "taxcloud": "A 30-operation REST API with a public OpenAPI 3.1 contract, llms.txt, Markdown docs and a 30-day trial that needs no card. The vendor publishes no rate limit numbers, no SLA, no API changelog and no official v3 client library, and the security page names no audit or certification." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/numeral-vs-taxcloud", "json": "https://www.anchorterminal.com/compare/numeral-vs-taxcloud.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/numeral-vs-taxcloud.md", "slim": "https://www.anchorterminal.com/compare/numeral-vs-taxcloud.min.md" }, "markdown": "TaxCloud scores 57.4 (C) on agent readiness against Numeral's 49.3 (D), and leads in 3 of 7 scored categories. Numeral leads on schema \u0026 documentation and agent ergonomics. Both do tax calculate.\n\n- Numeral: grade D, 49.3/100, rank #611 of 722. Markdown https://www.anchorterminal.com/tools/numeral.md · JSON https://www.anchorterminal.com/api/v1/tools/numeral.json\n- TaxCloud: grade C, 57.4/100, rank #475 of 722. Markdown https://www.anchorterminal.com/tools/taxcloud.md · JSON https://www.anchorterminal.com/api/v1/tools/taxcloud.json\n\n## Which one, for what\n\n### Numeral (D)\n\nGood for: An agent working for a seller or platform that has a Numeral account and needs tax at checkout, committed transactions for filing, and read access to nexus, registrations and filings through MCP.\n\nAhead on:\n- Schema \u0026 documentation, 87 against 75\n- Agent ergonomics, 71 against 64\n\nWatch for: No status page, uptime SLA or numeric rate limit was found. The product page says rate limits can be removed on request\n\n### TaxCloud (C)\n\nGood for: An agent working for a US seller that needs tax on a cart at checkout, a record of orders and refunds for filing, and exemption certificates by customer.\n\nAhead on:\n- Reliability, 66 against 25\n- Payments \u0026 pricing, 34 against 10\n- Transparency \u0026 trust, 51 against 45\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: No rate limit numbers are published. The API page says only that the threshold is high and subject to change\n\n\n## Score by category\n\n| Category | Weight | Numeral | TaxCloud | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 25 | 66 | TaxCloud +41 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 87 | 75 | Numeral +12 |\n| Agent ergonomics | 13% (16.2 this run) | 71 | 64 | Numeral +7 |\n| Security \u0026 auth | 14% (17.5 this run) | 47 | 45 | Numeral +2 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 10 | 34 | TaxCloud +24 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 60 | 57 | Numeral +3 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 45 | 51 | TaxCloud +6 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **49.3 · D** | **57.4 · C** | |\n\n## Facts side by side\n\n| Fact | Numeral | TaxCloud |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Numeral Two, Inc. | The Federal Tax Authority, LLC (TaxCloud) |\n| Hosted endpoint | `https://api.numeralhq.com` | `https://api.v3.taxcloud.com` |\n| Transports | HTTP, Streamable HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Paid | Paid |\n| x402 | no | no |\n| Licence | Proprietary service under Numeral's terms of service. The Go, Python and Node SDKs are Apache-2.0 | Proprietary service under TaxCloud's terms of service. The agent skills repository on GitHub is Apache-2.0 |\n| Tools exposed | 14 | none |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-15 | 2026-09-24 |\n| Terms last updated | no date given | 2025-03-01 |\n| Privacy policy last updated | no document linked | 2025-02-01 |\n| Customer content may train models | not found in the text | yes |\n| Terms restrict automated access | not found in the text | yes |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Popularity | 0 stars, 9 npm/wk, 19 PyPI/wk | 0 stars |\n\n## Verdicts\n\n**Numeral.** Docs are written for agents, with a public OpenAPI spec for 32 operations, Markdown pages, llms.txt and a remote MCP server whose 14 tools are read-only by default. No status page, numeric rate limit or SLA was found, the API ignores idempotency keys, and API access is sold on a custom plan after a demo.\n\n**TaxCloud.** A 30-operation REST API with a public OpenAPI 3.1 contract, llms.txt, Markdown docs and a 30-day trial that needs no card. The vendor publishes no rate limit numbers, no SLA, no API changelog and no official v3 client library, and the security page names no audit or certification.\n\n## Before you call either\n\n### Numeral\n\n1. Send `X-API-Version: 2026-03-01` on every call to `https://api.numeralhq.com`. Merchant, platform and certificate endpoints reject requests without it\n2. Commit with a stable `reference_order_id`. On `REFERENCE_ORDER_ID_ALREADY_EXISTS` look up the existing transaction, because `Idempotency-Key` is ignored\n3. Commit before the calculation's `expires_at`. If it has expired, calculate again and commit the new `calculation_id` with the original `reference_order_id`\n4. Send `amount` as the line total in minor units to `/tax/calculations` and as the per-unit price to `/tax/platform/calculations`\n5. Start with an `sk_test_` key. Certificate endpoints and MCP certificate tools are live only and answer `TESTMODE_NOT_SUPPORTED` or `live_mode_required`\n\n### TaxCloud\n\n1. Send `X-API-KEY` on every call and put the connection ID in the path, as in `/tax/connections/{connectionId}/carts`. A wrong ID returns 404\n2. Mark nexus states active in the account first. With none active the API returns zero tax and no error\n3. Use a separate test connection. There is no sandbox, and orders on a live connection go into filing\n4. Pass a stable `idempotencyKey` on refunds, and never convert the same cart twice. A second conversion creates a duplicate liability\n5. Void a wrong order before 12:00 AM Eastern on the 10th of the month after its `completedDate`. Later requests return 422\n\n## Questions\n\n### Which is better for AI agents, Numeral or TaxCloud?\n\nTaxCloud scores 57.4 (C) on agent readiness against Numeral's 49.3 (D), and leads in 3 of 7 scored categories. Numeral leads on schema \u0026 documentation and agent ergonomics.\n\n### Do Numeral and TaxCloud need an API key?\n\nBoth need an API key.\n\n### Can an agent call Numeral and TaxCloud without installing anything?\n\nYes. Numeral has a hosted endpoint at https://api.numeralhq.com and TaxCloud at https://api.v3.taxcloud.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/numeral-vs-taxcloud.json, and with the fewest tokens: https://www.anchorterminal.com/compare/numeral-vs-taxcloud.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"numeral\", \"b\": \"taxcloud\"}`. From a terminal: `anchor compare numeral taxcloud`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/numeral.json and https://www.anchorterminal.com/api/v1/tools/taxcloud.json\n\n## Other comparisons with Numeral or TaxCloud\n\n- [Anrok vs Numeral](https://www.anchorterminal.com/compare/anrok-vs-numeral.md)\n- [Anrok vs TaxCloud](https://www.anchorterminal.com/compare/anrok-vs-taxcloud.md)\n- [Avalara AvaTax vs Numeral](https://www.anchorterminal.com/compare/avalara-vs-numeral.md)\n- [Avalara AvaTax vs TaxCloud](https://www.anchorterminal.com/compare/avalara-vs-taxcloud.md)\n- [Fonoa vs Numeral](https://www.anchorterminal.com/compare/fonoa-vs-numeral.md)\n- [Fonoa vs TaxCloud](https://www.anchorterminal.com/compare/fonoa-vs-taxcloud.md)\n- [Kintsugi vs Numeral](https://www.anchorterminal.com/compare/kintsugi-vs-numeral.md)\n- [Kintsugi vs TaxCloud](https://www.anchorterminal.com/compare/kintsugi-vs-taxcloud.md)\n- [Numeral vs Quaderno](https://www.anchorterminal.com/compare/numeral-vs-quaderno.md)\n- [Numeral vs TaxJar](https://www.anchorterminal.com/compare/numeral-vs-taxjar.md)\n- [Numeral vs Vertex O Series](https://www.anchorterminal.com/compare/numeral-vs-vertex-tax.md)\n- [Numeral vs Zamp](https://www.anchorterminal.com/compare/numeral-vs-zamp.md)\n- [Quaderno vs TaxCloud](https://www.anchorterminal.com/compare/quaderno-vs-taxcloud.md)\n- [TaxCloud vs TaxJar](https://www.anchorterminal.com/compare/taxcloud-vs-taxjar.md)\n- [TaxCloud vs Vertex O Series](https://www.anchorterminal.com/compare/taxcloud-vs-vertex-tax.md)\n- [TaxCloud vs Zamp](https://www.anchorterminal.com/compare/taxcloud-vs-zamp.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Numeral vs TaxCloud", "url": "" } ], "description": "TaxCloud scores 57.4 (C) on agent readiness against Numeral's 49.3 (D), and leads in 3 of 7 scored categories. Numeral leads on schema \u0026 documentation and agent ergonomics. Both do tax calculate. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Numeral D 49.3", "TaxCloud C 57.4", "scores" ], "h1": "Numeral vs TaxCloud", "image": "https://www.anchorterminal.com/assets/og/compare-numeral-vs-taxcloud.png", "path": "/compare/numeral-vs-taxcloud", "published": "2026-10-01", "section": "tools", "title": "Numeral vs TaxCloud for AI agents, D 49.3 vs C 57.4 | Anchor Terminal", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/numeral-vs-taxcloud" }, "tokens": { "markdown": 2200, "slim": 730 }, "version": 1 }