{
  "data": {
    "a": {
      "slug": "avalara",
      "name": "Avalara AvaTax",
      "vendor": "Avalara, Inc.",
      "vendorUrl": "https://www.avalara.com",
      "kind": "http-api",
      "category": "tax",
      "summary": "Avalara AvaTax calculates sales tax, VAT and GST for a transaction and records it for reporting. Agents reach it through the AvaTax REST v2 API or a hosted MCP server, with separate Avalara products for returns, exemption certificates and e-invoicing.",
      "url": "https://www.anchorterminal.com/tools/avalara",
      "markdownUrl": "https://www.anchorterminal.com/tools/avalara.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/avalara.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/avalara.json",
      "repo": "https://github.com/avadev/mcp",
      "license": "Proprietary service under the Avalara Service Terms. The SDKs on GitHub are Apache-2.0. The MCP repository holds a README only, with no licence file",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://rest.avatax.com/api/v2",
      "packages": [
        {
          "registry": "npm",
          "name": "avatax"
        },
        {
          "registry": "pypi",
          "name": "Avalara"
        }
      ],
      "auth": "mixed",
      "authNotes": "The MCP server uses OAuth through identity.avalara.com (sandbox ai-sbx.avlr.sh) with one scope, avalara_mcp, and a person signs in and consents in a browser. The identity server advertises PKCE (S256), a public client registration endpoint, device code and client credentials grants. The REST API accepts HTTP Basic with a username and password or with an account ID and licence key, or a bearer token from the identity server. Licence keys are account-wide, can be named, and a reset revokes the old key at once. What a caller can do follows the user's security role, such as AccountAdmin or CompanyUser. Access is self-serve through the trial signup, with no app review found.",
      "pricing": "paid",
      "pricingNotes": "Free 90-day AvaTax trial, no card, limited to 5 orders and 5 invoices a minute and 1,000 transactions a day, for evaluation with test data only under the AvaTax terms. Paid plans on the public pricing page are Core Compliance at $79 a state a month ($799 a state a year) and Core Compliance with SST services at $69 ($699 a year), both for businesses under $50M in annual revenue and both including AvaTax calculation and managed returns. Above that, plans are quoted. Avalara says price varies with products, states, integrations and monthly transaction volume, and no price per transaction or per API call is published (https://www.avalara.com/us/en/products/sales-and-use-tax/pricing.html, checked 2026-10-08).",
      "priceSummary": "$79 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the developer docs, the AvaTax API reference or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": 10,
      "popularity": {
        "githubStars": 5,
        "npmWeekly": 330649,
        "pypiWeekly": 37689,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://developer.avalara.com/",
      "llmsTxt": "https://developer.avalara.com/llms.txt",
      "openapi": "https://sandbox-rest.avatax.com/swagger/v2/swagger.json",
      "registryName": "com.avalara/avatax",
      "capabilities": [
        "tax.calculate",
        "tax.transactions",
        "tax.exemptions",
        "tax.filing",
        "tax.invoicing"
      ],
      "tags": [
        "hosted",
        "paid",
        "free-trial",
        "mcp",
        "oauth",
        "openapi",
        "llms-txt",
        "typescript",
        "python",
        "java",
        "csharp",
        "sandbox",
        "status-page",
        "soc2",
        "iso27001"
      ],
      "lastRelease": "2026-09-16",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68.8,
        "grade": "B",
        "agentReady": false,
        "rank": 172,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 1,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 84,
          "maintenance": 79,
          "payments": 30,
          "reliability": 62,
          "schema": 85,
          "security": 65,
          "transparency": 79
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "The REST API has a public Swagger file with 491 operations, a Markdown page per endpoint and a 90-day trial with no card. Production rate limits and prices per transaction are not published, the API patch notes stop at April 2023, and the tax calculation service was degraded for about 23 hours on 5 and 6 October 2026.",
        "bestFor": "An agent that must calculate and record US sales tax at address level, with VAT and GST in other countries, and hand the records to filing.",
        "strengths": [
          "Public Swagger 2.0 file with 491 operations, plus llms.txt and a Markdown page with a curl example for each endpoint",
          "Hosted MCP server at mcp.avalara.com/avatax with ten documented tools, OAuth sign-in and an entry in the official MCP registry as com.avalara/avatax",
          "90-day AvaTax trial with no card, limited to 5 orders and 5 invoices a minute and 1,000 transactions a day",
          "Errors return a code, number, description and help link, from a published list of 429 codes",
          "SDKs in six languages under Apache-2.0, released monthly, latest 26.9.0 on 16 September 2026"
        ],
        "weaknesses": [
          "Production rate limits are not published. The only numbers found are the trial limits and 5 calls a minute on report exports",
          "No price per transaction. Public plans are $79 a state a month, or $69 with SST services, and larger accounts are quoted",
          "The API patch notes page ends at version 23.4.1 of 26 April 2023, while production reports 26.9.2",
          "Tax calculation was degraded from 22:32 PT on 5 October to 21:20 PT on 6 October 2026, per status.avalara.com",
          "REST guides lead with HTTP Basic using a username and password or an account-wide licence key, and the MCP server has one scope, avalara_mcp"
        ],
        "agentNotes": [
          "Omit `type` or send SalesOrder for an estimate. A type ending in Invoice is recorded, and `commit` set to true locks it for reporting",
          "Retry a timed-out invoice with CreateOrAdjustTransaction, not CreateTransaction, which errors when a committed transaction has the same code",
          "Use sandbox-rest.avatax.com with sandbox credentials for tests. Production is rest.avatax.com and the two accounts are separate",
          "Add `$include=SummaryOnly` or LinesOnly to shrink transaction responses, and page lists with `$top` (1,000 at most) and `$skip`",
          "Call /api/v2/utilities/ping first. It answers without credentials and shows whether the credentials sent were accepted"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 68.8
          }
        ],
        "editorialScores": {
          "ergonomics": 84,
          "maintenance": 79,
          "payments": 30,
          "reliability": 62,
          "schema": 85,
          "security": 65,
          "transparency": 69
        },
        "provenanceScore": 88
      },
      "connect": {
        "install": "npm install avatax",
        "http": "curl -X POST \"https://sandbox-rest.avatax.com/api/v2/transactions/create\" \\\n  -H \"Authorization: Basic \u003ccredentials\u003e\" \\\n  -H \"Content-Type: application/json\" \\\n  -H \"Accept: application/json\" \\\n  -d @transaction.json",
        "config": {
          "mcpServers": {
            "avalara-avatax": {
              "type": "http",
              "url": "https://mcp.avalara.com/avatax"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/tax.calculate",
        "tool": "https://letme.dev/avalara"
      },
      "area": "domain-data",
      "unitPrices": [
        {
          "item": "Core Compliance (AvaTax and managed returns)",
          "unit": "month",
          "usd": 79,
          "note": "per state, billed monthly; $799 per state billed yearly; annual revenue under $50M"
        },
        {
          "item": "Core Compliance + SST Services",
          "unit": "month",
          "usd": 69,
          "note": "per state, billed monthly; $699 per state billed yearly; qualifying sellers"
        },
        {
          "item": "AvaTax free trial",
          "unit": "month",
          "usd": 0,
          "note": "90 days, 1,000 transactions a day, test data only"
        }
      ],
      "provenance": {
        "legalEntity": "Avalara, Inc.",
        "domain": "avalara.com",
        "domainRegistered": "2003-12-08",
        "endpointOnVendorDomain": true,
        "terms": "https://legal.avalara.com/",
        "privacy": "https://legal.avalara.com/dpa",
        "statusPage": "https://status.avalara.com",
        "changelog": "https://developer.avalara.com/patch-notes/",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The Service Terms (version 7.1, effective 1 October 2026) name Avalara, Inc., a Washington corporation at 512 S. Mangum St. #100, Durham, NC 27701, as the contracting entity under New York law, and Avalara Europe Ltd. (England and Wales, No. 8446351) for European customers.",
          "The MCP server answers at mcp.avalara.com. The REST API answers at rest.avatax.com and sandbox-rest.avatax.com. RDAP gives avatax.com a registration date of 2005-01-27, and Avalara's own documentation names those hosts.",
          "www.avalara.com/.well-known/security.txt and developer.avalara.com/.well-known/security.txt return 404. Reports go through the vulnerability disclosure programme at https://www.avalara.com/us/en/legal/responsible-disclosure.html.",
          "The patch notes page lists API releases up to 23.4.1 on 26 April 2023 and nothing later. Current releases are visible only as the version in /api/v2/utilities/ping and as SDK tags on GitHub.",
          "RDAP for avalara.com gives a registration date of 2003-12-08. Privacy notices, the DPA and the subprocessor list are published together at legal.avalara.com/dpa."
        ],
        "score": 88
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/avalara.json",
      "live": {
        "slug": "avalara",
        "probe": {
          "target": "https://rest.avatax.com/api/v2",
          "method": "get",
          "lastAt": "2026-10-08T21:53:16.165950528Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 325,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 325,
          "p95ms24h": 397,
          "samples24h": 71,
          "samples30d": 71,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 71,
              "ok": 71
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.avalara.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T21:57:42.793391707Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "avatax",
            "version": "26.9.0",
            "seenAt": "2026-10-08T16:00:19.162430293Z"
          },
          {
            "registry": "pypi",
            "name": "Avalara",
            "version": "26.9.0",
            "released": "2026-09-16",
            "seenAt": "2026-10-08T16:00:23.243148692Z"
          }
        ],
        "githubStars": 5,
        "npmWeekly": 330649,
        "pypiWeekly": 37689,
        "securityTxt": {
          "url": "https://avalara.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-08T15:38:36.211738872Z"
        },
        "pages": [
          {
            "url": "https://developer.avalara.com/patch-notes/",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:17:04.362764489Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "12c3dd83a580"
          },
          {
            "url": "https://www.avalara.com/us/en/products/sales-and-use-tax/pricing.html",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-08T18:26:21.240577756Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ab348ca6c51d"
          },
          {
            "url": "https://legal.avalara.com/dpa",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:21:25.299594822Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "1d325483f118"
          },
          {
            "url": "https://legal.avalara.com/",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:21:22.64286746Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ac0c20791779"
          }
        ],
        "updatedAt": "2026-10-08T21:57:42.793391707Z"
      }
    },
    "answer": "Avalara AvaTax scores 68.8 (B) on agent readiness against Numeral's 49.3 (D), and leads in 6 of 7 scored categories.",
    "b": {
      "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": "2026-10-08T21:53:28.845128822Z",
          "lastOk": true,
          "lastStatus": 200,
          "lastMs": 601,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 602,
          "p95ms24h": 686,
          "samples24h": 28,
          "samples30d": 28,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 28,
              "ok": 28
            }
          ]
        },
        "updatedAt": "2026-10-08T21:53:28.845128822Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Avalara, Inc.",
        "b": "Numeral Two, Inc.",
        "name": "Vendor"
      },
      {
        "a": "https://rest.avatax.com/api/v2",
        "b": "https://api.numeralhq.com",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP",
        "b": "HTTP, Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "API key",
        "name": "Auth"
      },
      {
        "a": "Paid",
        "b": "Paid",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under the Avalara Service Terms. The SDKs on GitHub are Apache-2.0. The MCP repository holds a README only, with no licence file",
        "b": "Proprietary service under Numeral's terms of service. The Go, Python and Node SDKs are Apache-2.0",
        "name": "Licence"
      },
      {
        "a": "10",
        "b": "14",
        "name": "Tools exposed"
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      {
        "a": "no",
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        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
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      {
        "a": "com.avalara/avatax",
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        "name": "MCP registry"
      },
      {
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        "b": "2026-09-15",
        "name": "Last release"
      },
      {
        "a": "2023-05-01",
        "b": "no date given",
        "name": "Terms last updated"
      },
      {
        "a": "2022-08-08",
        "b": "no document linked",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "5 stars, 331k npm/wk, 38k PyPI/wk",
        "b": "0 stars, 9 npm/wk, 19 PyPI/wk",
        "name": "Popularity"
      }
    ],
    "faq": [
      {
        "answer": "Avalara AvaTax scores 68.8 (B) on agent readiness against Numeral's 49.3 (D), and leads in 6 of 7 scored categories.",
        "question": "Which is better for AI agents, Avalara AvaTax or Numeral?"
      },
      {
        "answer": "Avalara AvaTax takes an API key or an OAuth sign-in. Numeral needs an API key.",
        "question": "Do Avalara AvaTax and Numeral need an API key?"
      },
      {
        "answer": "Yes. Avalara AvaTax has a hosted endpoint at https://rest.avatax.com/api/v2 and Numeral at https://api.numeralhq.com.",
        "question": "Can an agent call Avalara AvaTax and Numeral without installing anything?"
      }
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          "Agent ergonomics, 84 against 71",
          "Security \u0026 auth, 65 against 47",
          "Payments \u0026 pricing, 30 against 10",
          "Maintenance \u0026 community, 79 against 60",
          "Transparency \u0026 trust, 79 against 45"
        ],
        "also": null,
        "goodFor": "An agent that must calculate and record US sales tax at address level, with VAT and GST in other countries, and hand the records to filing.",
        "slug": "avalara",
        "watchFor": "Production rate limits are not published. The only numbers found are the trial limits and 5 calls a minute on report exports"
      },
      {
        "aheadOn": null,
        "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"
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    "scores": [
      {
        "avalara": 62,
        "by": 37,
        "edge": "avalara",
        "key": "reliability",
        "name": "Reliability",
        "numeral": 25,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "avalara": 85,
        "by": 2,
        "edge": "numeral",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "numeral": 87,
        "weight": 13
      },
      {
        "avalara": 84,
        "by": 13,
        "edge": "avalara",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "numeral": 71,
        "weight": 13
      },
      {
        "avalara": 65,
        "by": 18,
        "edge": "avalara",
        "key": "security",
        "name": "Security \u0026 auth",
        "numeral": 47,
        "weight": 14
      },
      {
        "avalara": 30,
        "by": 20,
        "edge": "avalara",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "numeral": 10,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "avalara": 79,
        "by": 19,
        "edge": "avalara",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "numeral": 60,
        "weight": 7
      },
      {
        "avalara": 79,
        "by": 34,
        "edge": "avalara",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "numeral": 45,
        "weight": 7
      }
    ],
    "summary": "Avalara AvaTax scores 68.8 (B) on agent readiness against Numeral's 49.3 (D), and leads in 6 of 7 scored categories. Both do tax calculate.",
    "verdicts": {
      "avalara": "The REST API has a public Swagger file with 491 operations, a Markdown page per endpoint and a 90-day trial with no card. Production rate limits and prices per transaction are not published, the API patch notes stop at April 2023, and the tax calculation service was degraded for about 23 hours on 5 and 6 October 2026.",
      "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."
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  "markdown": "Avalara AvaTax scores 68.8 (B) on agent readiness against Numeral's 49.3 (D), and leads in 6 of 7 scored categories. Both do tax calculate.\n\n- Avalara AvaTax: grade B, 68.8/100, rank #172 of 722. Markdown https://www.anchorterminal.com/tools/avalara.md · JSON https://www.anchorterminal.com/api/v1/tools/avalara.json\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\n## Which one, for what\n\n### Avalara AvaTax (B)\n\nGood for: An agent that must calculate and record US sales tax at address level, with VAT and GST in other countries, and hand the records to filing.\n\nAhead on:\n- Reliability, 62 against 25\n- Agent ergonomics, 84 against 71\n- Security \u0026 auth, 65 against 47\n- Payments \u0026 pricing, 30 against 10\n- Maintenance \u0026 community, 79 against 60\n- Transparency \u0026 trust, 79 against 45\n\nWatch for: Production rate limits are not published. The only numbers found are the trial limits and 5 calls a minute on report exports\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\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\n## Score by category\n\n| Category | Weight | Avalara AvaTax | Numeral | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 62 | 25 | Avalara AvaTax +37 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 87 | Numeral +2 |\n| Agent ergonomics | 13% (16.2 this run) | 84 | 71 | Avalara AvaTax +13 |\n| Security \u0026 auth | 14% (17.5 this run) | 65 | 47 | Avalara AvaTax +18 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 10 | Avalara AvaTax +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 79 | 60 | Avalara AvaTax +19 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 79 | 45 | Avalara AvaTax +34 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **68.8 · B** | **49.3 · D** | |\n\n## Facts side by side\n\n| Fact | Avalara AvaTax | Numeral |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Avalara, Inc. | Numeral Two, Inc. |\n| Hosted endpoint | `https://rest.avatax.com/api/v2` | `https://api.numeralhq.com` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Paid | Paid |\n| x402 | no | no |\n| Licence | Proprietary service under the Avalara Service Terms. The SDKs on GitHub are Apache-2.0. The MCP repository holds a README only, with no licence file | Proprietary service under Numeral's terms of service. The Go, Python and Node SDKs are Apache-2.0 |\n| Tools exposed | 10 | 14 |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | yes |\n| MCP registry | `com.avalara/avatax` | not listed |\n| Last release | 2026-09-16 | 2026-09-15 |\n| Terms last updated | 2023-05-01 | no date given |\n| Privacy policy last updated | 2022-08-08 | no document linked |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 5 stars, 331k npm/wk, 38k PyPI/wk | 0 stars, 9 npm/wk, 19 PyPI/wk |\n\n## Verdicts\n\n**Avalara AvaTax.** The REST API has a public Swagger file with 491 operations, a Markdown page per endpoint and a 90-day trial with no card. Production rate limits and prices per transaction are not published, the API patch notes stop at April 2023, and the tax calculation service was degraded for about 23 hours on 5 and 6 October 2026.\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## Before you call either\n\n### Avalara AvaTax\n\n1. Omit `type` or send SalesOrder for an estimate. A type ending in Invoice is recorded, and `commit` set to true locks it for reporting\n2. Retry a timed-out invoice with CreateOrAdjustTransaction, not CreateTransaction, which errors when a committed transaction has the same code\n3. Use sandbox-rest.avatax.com with sandbox credentials for tests. Production is rest.avatax.com and the two accounts are separate\n4. Add `$include=SummaryOnly` or LinesOnly to shrink transaction responses, and page lists with `$top` (1,000 at most) and `$skip`\n5. Call /api/v2/utilities/ping first. It answers without credentials and shows whether the credentials sent were accepted\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## Questions\n\n### Which is better for AI agents, Avalara AvaTax or Numeral?\n\nAvalara AvaTax scores 68.8 (B) on agent readiness against Numeral's 49.3 (D), and leads in 6 of 7 scored categories.\n\n### Do Avalara AvaTax and Numeral need an API key?\n\nAvalara AvaTax takes an API key or an OAuth sign-in. Numeral needs an API key.\n\n### Can an agent call Avalara AvaTax and Numeral without installing anything?\n\nYes. Avalara AvaTax has a hosted endpoint at https://rest.avatax.com/api/v2 and Numeral at https://api.numeralhq.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/avalara-vs-numeral.json, and with the fewest tokens: https://www.anchorterminal.com/compare/avalara-vs-numeral.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"avalara\", \"b\": \"numeral\"}`. From a terminal: `anchor compare avalara numeral`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/avalara.json and https://www.anchorterminal.com/api/v1/tools/numeral.json\n\n## Other comparisons with Avalara AvaTax or Numeral\n\n- [Anrok vs Avalara AvaTax](https://www.anchorterminal.com/compare/anrok-vs-avalara.md)\n- [Anrok vs Numeral](https://www.anchorterminal.com/compare/anrok-vs-numeral.md)\n- [Avalara AvaTax vs Fonoa](https://www.anchorterminal.com/compare/avalara-vs-fonoa.md)\n- [Avalara AvaTax vs Kintsugi](https://www.anchorterminal.com/compare/avalara-vs-kintsugi.md)\n- [Avalara AvaTax vs Quaderno](https://www.anchorterminal.com/compare/avalara-vs-quaderno.md)\n- [Avalara AvaTax vs TaxCloud](https://www.anchorterminal.com/compare/avalara-vs-taxcloud.md)\n- [Avalara AvaTax vs TaxJar](https://www.anchorterminal.com/compare/avalara-vs-taxjar.md)\n- [Avalara AvaTax vs Vertex O Series](https://www.anchorterminal.com/compare/avalara-vs-vertex-tax.md)\n- [Avalara AvaTax vs Zamp](https://www.anchorterminal.com/compare/avalara-vs-zamp.md)\n- [Fonoa vs Numeral](https://www.anchorterminal.com/compare/fonoa-vs-numeral.md)\n- [Kintsugi vs Numeral](https://www.anchorterminal.com/compare/kintsugi-vs-numeral.md)\n- [Numeral vs Quaderno](https://www.anchorterminal.com/compare/numeral-vs-quaderno.md)\n- [Numeral vs TaxCloud](https://www.anchorterminal.com/compare/numeral-vs-taxcloud.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",
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    "title": "Avalara AvaTax vs Numeral for AI agents, B 68.8 vs D 49.3",
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