{
  "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": "2026-10-08T21:12:04.567161514Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 309,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 324,
          "p95ms24h": 397,
          "samples24h": 64,
          "samples30d": 64,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 64,
              "ok": 64
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.avalara.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T21:05:51.964398199Z"
        },
        "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": "2026-10-08T21:12:04.567161514Z"
      }
    },
    "answer": "Avalara AvaTax scores 68.8 (B) on agent readiness against Fonoa's 51.7 (D), and leads in 6 of 7 scored categories.",
    "b": {
      "slug": "fonoa",
      "name": "Fonoa",
      "vendor": "Fonoa Technologies Limited",
      "vendorUrl": "https://www.fonoa.com",
      "kind": "http-api",
      "category": "tax",
      "summary": "Fonoa is a hosted indirect tax platform for VAT, GST and sales tax. Its REST API validates tax identification numbers, calculates tax on a transaction and reports e-invoices to tax authorities, with a sandbox and a demo environment.",
      "url": "https://www.anchorterminal.com/tools/fonoa",
      "markdownUrl": "https://www.anchorterminal.com/tools/fonoa.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/fonoa.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/fonoa.json",
      "license": "Proprietary service. The API contract is not published. The public Terms of Service took effect on 14 May 2020 and name older seller sites",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.fonoa.com",
      "packages": [],
      "auth": "api-key",
      "authNotes": "Every request needs a subscription key in the `Ocp-Apim-Subscription-Key` header. Fonoa issues a primary and a secondary key once a client is onboarded, on request by email or through the sales form, with separate keys for the sandbox and production. No self-serve key page, scopes, read-only keys or expiry were found in the docs. Countries are enabled per tenant, and a call for a country that is not enabled returns `COUNTRIES_NOT_ALLOWED`. Webhooks are set up by asking a Fonoa contact.",
      "pricing": "paid",
      "pricingNotes": "No public prices. www.fonoa.com/pricing returns 404 and the site's buttons read \"Get in touch\". No free tier or self-serve trial was found. The sandbox has unlimited usage with fixed data and the demo environment has limited usage, and a key for either comes from Fonoa after contact (https://docs.fonoa.com/reference/environments, checked 2026-10-08).",
      "priceSummary": "Paid",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI definitions or the website (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.fonoa.com",
      "llmsTxt": "https://docs.fonoa.com/llms.txt",
      "capabilities": [
        "tax.calculate",
        "tax.transactions",
        "tax.invoicing"
      ],
      "tags": [
        "hosted",
        "paid",
        "closed-source",
        "api-key",
        "openapi",
        "llms-txt",
        "sandbox",
        "webhooks",
        "sales-led",
        "status-page",
        "iso27001"
      ],
      "lastRelease": "2026-10-02",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 51.7,
        "grade": "D",
        "agentReady": false,
        "rank": 575,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 8,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 64,
          "maintenance": 49,
          "payments": 3,
          "reliability": 66,
          "schema": 68,
          "security": 47,
          "transparency": 48
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "The API reference is served as Markdown with an OpenAPI definition on each endpoint page, and e-invoicing submissions are idempotent by `transaction_id`. API keys are issued by Fonoa staff after contact, no price, rate limit or changelog is published, and the only public terms date from May 2020 and cover older seller sites.",
        "bestFor": "An agent working for a company that already has a Fonoa contract and needs tax ID validation, VAT or GST calculation, or e-invoice reporting across many countries through one API.",
        "strengths": [
          "Every reference page is served as Markdown with its OpenAPI 3.0 definition inline, indexed by docs.fonoa.com/llms.txt",
          "E-invoicing submissions are idempotent by `transaction_id`, and the docs say a transaction can be replayed any number of times",
          "The sandbox at sandbox.fonoa.com returns fixed outcomes for documented test inputs, including errors, delays and HTTP 500",
          "Webhooks carry a signed OIDC token with a SHA-256 checksum of the body, valid for one hour",
          "status.fonoa.com shows 100 per cent over 90 days for its E-Invoicing, Lookup and Tax monitors on 8 October 2026"
        ],
        "weaknesses": [
          "No self-serve signup. Sandbox, demo and production keys are issued by Fonoa after contact by email or the sales form",
          "No pricing page. www.fonoa.com/pricing returns 404 and the site's buttons read \"Get in touch\"",
          "No rate limit numbers found. The 429 response says \"Try again a bit later\" with no `Retry-After` documented",
          "No changelog, deprecation policy, official SDK or MCP server found. docs.fonoa.com/changelog returns 404",
          "The only public terms took effect on 14 May 2020 and cover older seller sites. They bar benchmarking and automated access without written permission"
        ],
        "agentNotes": [
          "Send the key in the `Ocp-Apim-Subscription-Key` header. Use the sandbox key at https://sandbox.fonoa.com and the production key at https://api.fonoa.com",
          "Treat validations and e-invoicing submissions as asynchronous. POST, then poll the GET endpoint or wait for the webhook, and avoid tight polling",
          "Reuse the same `transaction_id` on a retry of `/v1/transactions`. A transaction already processed is not processed again",
          "Commit a calculation with POST `/tax/v2/calculations/\u003cuuid\u003e/commit` only when the sale is final. The commit adds it to revenue tracking",
          "Ask the Fonoa contact to configure webhooks. There is no API for it, and always fetch `resource_url` as given in the webhook"
        ],
        "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": 51.7
          }
        ],
        "editorialScores": {
          "ergonomics": 64,
          "maintenance": 49,
          "payments": 3,
          "reliability": 66,
          "schema": 68,
          "security": 47,
          "transparency": 27
        },
        "provenanceScore": 69
      },
      "connect": {
        "http": "curl --location 'https://sandbox.fonoa.com/lookup/v2/single-validations' \\\n--header 'Content-Type: application/json' \\\n--header 'Ocp-Apim-Subscription-Key: \u003cyour-sandbox-API-key\u003e' \\\n--data '{\n    \"country_iso_code\": \"pl\",\n    \"tax_identification_number\": \"2000\"\n}'"
      },
      "letme": {
        "capability": "https://letme.dev/tax.calculate",
        "tool": "https://letme.dev/fonoa"
      },
      "area": "domain-data",
      "provenance": {
        "legalEntity": "Fonoa Technologies Limited",
        "domain": "fonoa.com",
        "domainRegistered": "2004-08-24",
        "endpointOnVendorDomain": true,
        "terms": "",
        "privacy": "https://www.fonoa.com/legal/privacy-notice",
        "statusPage": "https://status.fonoa.com",
        "changelog": "",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The privacy notice names Fonoa Technologies Limited, 6th Floor, South Bank House, Barrow Street, Dublin 4, Ireland as data controller. The site footer gives Irish company number 677236.",
          "No terms URL is recorded. The only terms Fonoa publishes, at www.fonoa.com/legal/terms-of-service, took effect on 14 May 2020, apply to fonoatech.com, efacturacion.net, efiscal.biz, portugal.fonoatech.com and efatture.net, name Fonoa Technologies ltd. and are governed by Croatian law. No service agreement or API terms for fonoa.com customers were found.",
          "The privacy notice says it does not apply to personal data Fonoa processes on behalf of customers using its software, where Fonoa is a processor under the customer's contract. No date of last update was found on the page.",
          "The API answers at api.fonoa.com, sandbox.fonoa.com and api-demo.fonoa.com, all on the vendor's domain.",
          "www.fonoa.com/.well-known/security.txt and www.fonoa.com/security.txt return 404. The security page describes a vulnerability disclosure programme with an email address.",
          "No changelog was found. docs.fonoa.com/changelog returns 404, and product news is published as blog posts.",
          "RDAP for fonoa.com gives a registration date of 2004-08-24."
        ],
        "score": 69
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/fonoa.json",
      "live": {
        "slug": "fonoa",
        "probe": {
          "target": "https://api.fonoa.com",
          "method": "get",
          "lastAt": "2026-10-08T21:12:10.772964244Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 63,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 99,
          "p95ms24h": 161,
          "samples24h": 21,
          "samples30d": 21,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 21,
              "ok": 21
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.fonoa.com",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-08T19:38:33.601208747Z"
        },
        "updatedAt": "2026-10-08T21:12:10.772964244Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Avalara, Inc.",
        "b": "Fonoa Technologies Limited",
        "name": "Vendor"
      },
      {
        "a": "https://rest.avatax.com/api/v2",
        "b": "https://api.fonoa.com",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP, Streamable HTTP",
        "b": "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. The API contract is not published. The public Terms of Service took effect on 14 May 2020 and name older seller sites",
        "name": "Licence"
      },
      {
        "a": "10",
        "b": "none",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "com.avalara/avatax",
        "b": "not listed",
        "name": "MCP registry"
      },
      {
        "a": "2026-09-16",
        "b": "2026-10-02",
        "name": "Last release"
      },
      {
        "a": "2023-05-01",
        "b": "no document linked",
        "name": "Terms last updated"
      },
      {
        "a": "2022-08-08",
        "b": "no date given",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Terms restrict automated access"
      },
      {
        "a": "yes",
        "b": "",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "5 stars, 331k npm/wk, 38k PyPI/wk",
        "b": "none",
        "name": "Popularity"
      }
    ],
    "faq": [
      {
        "answer": "Avalara AvaTax scores 68.8 (B) on agent readiness against Fonoa's 51.7 (D), and leads in 6 of 7 scored categories.",
        "question": "Which is better for AI agents, Avalara AvaTax or Fonoa?"
      },
      {
        "answer": "Avalara AvaTax takes an API key or an OAuth sign-in. Fonoa needs an API key.",
        "question": "Do Avalara AvaTax and Fonoa need an API key?"
      },
      {
        "answer": "Yes. Avalara AvaTax has a hosted endpoint at https://rest.avatax.com/api/v2 and Fonoa at https://api.fonoa.com.",
        "question": "Can an agent call Avalara AvaTax and Fonoa without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Schema \u0026 documentation, 85 against 68",
          "Agent ergonomics, 84 against 64",
          "Security \u0026 auth, 65 against 47",
          "Payments \u0026 pricing, 30 against 3",
          "Maintenance \u0026 community, 79 against 49",
          "Transparency \u0026 trust, 79 against 48"
        ],
        "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 company that already has a Fonoa contract and needs tax ID validation, VAT or GST calculation, or e-invoice reporting across many countries through one API.",
        "slug": "fonoa",
        "watchFor": "No self-serve signup. Sandbox, demo and production keys are issued by Fonoa after contact by email or the sales form"
      }
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      "capability": "tax.calculate",
      "name": "Tax calculate"
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      {
        "json": "https://www.anchorterminal.com/compare/anrok-vs-avalara.json",
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        "url": "https://www.anchorterminal.com/compare/anrok-vs-avalara"
      },
      {
        "json": "https://www.anchorterminal.com/compare/anrok-vs-fonoa.json",
        "title": "Anrok vs Fonoa",
        "url": "https://www.anchorterminal.com/compare/anrok-vs-fonoa"
      },
      {
        "json": "https://www.anchorterminal.com/compare/avalara-vs-kintsugi.json",
        "title": "Avalara AvaTax vs Kintsugi",
        "url": "https://www.anchorterminal.com/compare/avalara-vs-kintsugi"
      },
      {
        "json": "https://www.anchorterminal.com/compare/avalara-vs-numeral.json",
        "title": "Avalara AvaTax vs Numeral",
        "url": "https://www.anchorterminal.com/compare/avalara-vs-numeral"
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      {
        "json": "https://www.anchorterminal.com/compare/avalara-vs-quaderno.json",
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      },
      {
        "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/avalara-vs-taxjar.json",
        "title": "Avalara AvaTax vs TaxJar",
        "url": "https://www.anchorterminal.com/compare/avalara-vs-taxjar"
      },
      {
        "json": "https://www.anchorterminal.com/compare/avalara-vs-vertex-tax.json",
        "title": "Avalara AvaTax vs Vertex O Series",
        "url": "https://www.anchorterminal.com/compare/avalara-vs-vertex-tax"
      },
      {
        "json": "https://www.anchorterminal.com/compare/avalara-vs-zamp.json",
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        "title": "Fonoa vs Numeral",
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      {
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        "title": "Fonoa vs Vertex O Series",
        "url": "https://www.anchorterminal.com/compare/fonoa-vs-vertex-tax"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fonoa-vs-zamp.json",
        "title": "Fonoa vs Zamp",
        "url": "https://www.anchorterminal.com/compare/fonoa-vs-zamp"
      }
    ],
    "scores": [
      {
        "avalara": 62,
        "by": 4,
        "edge": "fonoa",
        "fonoa": 66,
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "avalara": 85,
        "by": 17,
        "edge": "avalara",
        "fonoa": 68,
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "avalara": 84,
        "by": 20,
        "edge": "avalara",
        "fonoa": 64,
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "avalara": 65,
        "by": 18,
        "edge": "avalara",
        "fonoa": 47,
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "avalara": 30,
        "by": 27,
        "edge": "avalara",
        "fonoa": 3,
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "avalara": 79,
        "by": 30,
        "edge": "avalara",
        "fonoa": 49,
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "avalara": 79,
        "by": 31,
        "edge": "avalara",
        "fonoa": 48,
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Avalara AvaTax scores 68.8 (B) on agent readiness against Fonoa's 51.7 (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.",
      "fonoa": "The API reference is served as Markdown with an OpenAPI definition on each endpoint page, and e-invoicing submissions are idempotent by `transaction_id`. API keys are issued by Fonoa staff after contact, no price, rate limit or changelog is published, and the only public terms date from May 2020 and cover older seller sites."
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  "markdown": "Avalara AvaTax scores 68.8 (B) on agent readiness against Fonoa's 51.7 (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- Fonoa: grade D, 51.7/100, rank #575 of 722. Markdown https://www.anchorterminal.com/tools/fonoa.md · JSON https://www.anchorterminal.com/api/v1/tools/fonoa.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- Schema \u0026 documentation, 85 against 68\n- Agent ergonomics, 84 against 64\n- Security \u0026 auth, 65 against 47\n- Payments \u0026 pricing, 30 against 3\n- Maintenance \u0026 community, 79 against 49\n- Transparency \u0026 trust, 79 against 48\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### Fonoa (D)\n\nGood for: An agent working for a company that already has a Fonoa contract and needs tax ID validation, VAT or GST calculation, or e-invoice reporting across many countries through one API.\n\nWatch for: No self-serve signup. Sandbox, demo and production keys are issued by Fonoa after contact by email or the sales form\n\n\n## Score by category\n\n| Category | Weight | Avalara AvaTax | Fonoa | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 62 | 66 | Fonoa +4 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 68 | Avalara AvaTax +17 |\n| Agent ergonomics | 13% (16.2 this run) | 84 | 64 | Avalara AvaTax +20 |\n| Security \u0026 auth | 14% (17.5 this run) | 65 | 47 | Avalara AvaTax +18 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 3 | Avalara AvaTax +27 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 79 | 49 | Avalara AvaTax +30 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 79 | 48 | Avalara AvaTax +31 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **68.8 · B** | **51.7 · D** | |\n\n## Facts side by side\n\n| Fact | Avalara AvaTax | Fonoa |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Avalara, Inc. | Fonoa Technologies Limited |\n| Hosted endpoint | `https://rest.avatax.com/api/v2` | `https://api.fonoa.com` |\n| Transports | HTTP, Streamable HTTP | 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. The API contract is not published. The public Terms of Service took effect on 14 May 2020 and name older seller sites |\n| Tools exposed | 10 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `com.avalara/avatax` | not listed |\n| Last release | 2026-09-16 | 2026-10-02 |\n| Terms last updated | 2023-05-01 | no document linked |\n| Privacy policy last updated | 2022-08-08 | no date given |\n| Customer content may train models | not found in the text |  |\n| Terms restrict automated access | not found in the text |  |\n| Terms restrict benchmarking | yes |  |\n| Terms or service can change without notice | not found in the text |  |\n| Arbitration or class-action waiver | not found in the text |  |\n| Popularity | 5 stars, 331k npm/wk, 38k PyPI/wk | none |\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**Fonoa.** The API reference is served as Markdown with an OpenAPI definition on each endpoint page, and e-invoicing submissions are idempotent by `transaction_id`. API keys are issued by Fonoa staff after contact, no price, rate limit or changelog is published, and the only public terms date from May 2020 and cover older seller sites.\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### Fonoa\n\n1. Send the key in the `Ocp-Apim-Subscription-Key` header. Use the sandbox key at https://sandbox.fonoa.com and the production key at https://api.fonoa.com\n2. Treat validations and e-invoicing submissions as asynchronous. POST, then poll the GET endpoint or wait for the webhook, and avoid tight polling\n3. Reuse the same `transaction_id` on a retry of `/v1/transactions`. A transaction already processed is not processed again\n4. Commit a calculation with POST `/tax/v2/calculations/\u003cuuid\u003e/commit` only when the sale is final. The commit adds it to revenue tracking\n5. Ask the Fonoa contact to configure webhooks. There is no API for it, and always fetch `resource_url` as given in the webhook\n\n## Questions\n\n### Which is better for AI agents, Avalara AvaTax or Fonoa?\n\nAvalara AvaTax scores 68.8 (B) on agent readiness against Fonoa's 51.7 (D), and leads in 6 of 7 scored categories.\n\n### Do Avalara AvaTax and Fonoa need an API key?\n\nAvalara AvaTax takes an API key or an OAuth sign-in. Fonoa needs an API key.\n\n### Can an agent call Avalara AvaTax and Fonoa without installing anything?\n\nYes. Avalara AvaTax has a hosted endpoint at https://rest.avatax.com/api/v2 and Fonoa at https://api.fonoa.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/avalara-vs-fonoa.json, and with the fewest tokens: https://www.anchorterminal.com/compare/avalara-vs-fonoa.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"avalara\", \"b\": \"fonoa\"}`. From a terminal: `anchor compare avalara fonoa`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/avalara.json and https://www.anchorterminal.com/api/v1/tools/fonoa.json\n\n## Other comparisons with Avalara AvaTax or Fonoa\n\n- [Anrok vs Avalara AvaTax](https://www.anchorterminal.com/compare/anrok-vs-avalara.md)\n- [Anrok vs Fonoa](https://www.anchorterminal.com/compare/anrok-vs-fonoa.md)\n- [Avalara AvaTax vs Kintsugi](https://www.anchorterminal.com/compare/avalara-vs-kintsugi.md)\n- [Avalara AvaTax vs Numeral](https://www.anchorterminal.com/compare/avalara-vs-numeral.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 Kintsugi](https://www.anchorterminal.com/compare/fonoa-vs-kintsugi.md)\n- [Fonoa vs Numeral](https://www.anchorterminal.com/compare/fonoa-vs-numeral.md)\n- [Fonoa vs Quaderno](https://www.anchorterminal.com/compare/fonoa-vs-quaderno.md)\n- [Fonoa vs TaxCloud](https://www.anchorterminal.com/compare/fonoa-vs-taxcloud.md)\n- [Fonoa vs TaxJar](https://www.anchorterminal.com/compare/fonoa-vs-taxjar.md)\n- [Fonoa vs Vertex O Series](https://www.anchorterminal.com/compare/fonoa-vs-vertex-tax.md)\n- [Fonoa vs Zamp](https://www.anchorterminal.com/compare/fonoa-vs-zamp.md)\n",
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    "title": "Avalara AvaTax vs Fonoa for AI agents, B 68.8 vs D 51.7",
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