{
  "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 Kintsugi's 60.7 (C), and leads in 5 of 7 scored categories. Kintsugi leads on reliability.",
    "b": {
      "slug": "kintsugi",
      "name": "Kintsugi",
      "vendor": "Kintsugi AI, Inc.",
      "vendorUrl": "https://trykintsugi.com",
      "kind": "http-api",
      "category": "tax",
      "summary": "Kintsugi is a hosted sales tax, VAT and GST compliance platform. Its API estimates tax, records transactions, customers and exemptions, and manages nexus, registrations and filings. Two MCP servers connect AI assistants to the API and to account data.",
      "url": "https://www.anchorterminal.com/tools/kintsugi",
      "markdownUrl": "https://www.anchorterminal.com/tools/kintsugi.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/kintsugi.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/kintsugi.json",
      "repo": "https://github.com/kintsugi-tax/kintsugi-tax-python-sdk",
      "license": "Proprietary service under the Kintsugi Terms of Service. The Python SDK repository is MIT",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.trykintsugi.com",
      "packages": [
        {
          "registry": "pypi",
          "name": "kintsugi-tax-platform-sdk"
        },
        {
          "registry": "npm",
          "name": "@kintsugi-tax/tax-platform-sdk"
        }
      ],
      "auth": "mixed",
      "authNotes": "API keys are self-serve in the app under Configuration, API Keys, but only on a paid plan that includes them, and the pricing page lists API access under Premium, which is arranged through sales. The Tenanted API takes the key in `Api-Key`. v1, the SDKs and the docs MCP server take `x-api-key` with `x-organization-id`. A key belongs to one organisation, can expire, and has no scopes. Key and user management endpoints accept only an Owner or Admin session token. The account-data MCP server uses OAuth 2.1 with PKCE, dynamic client registration and the scope `read:user_data`, signed in with the app login.",
      "pricing": "paid",
      "pricingNotes": "API access is listed only under Premium, which is priced on request. Free is $0 with no card and covers exposure monitoring, CSV imports and no-code integrations, without API keys. Starter starts at $75 per filing or registration. No free tier or sandbox with live API access was found, so an agent can't start on the API without a Premium plan. The API Lab in the docs runs against simulated responses (https://trykintsugi.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 file or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": 55,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 71,
        "pypiWeekly": 10,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.trykintsugi.com",
      "llmsTxt": "https://docs.trykintsugi.com/llms.txt",
      "openapi": "https://api.trykintsugi.com/openapi.json",
      "capabilities": [
        "tax.calculate",
        "tax.transactions",
        "tax.filing",
        "tax.exemptions"
      ],
      "tags": [
        "hosted",
        "paid",
        "closed-source",
        "api-key",
        "oauth",
        "mcp",
        "openapi",
        "llms-txt",
        "python",
        "typescript",
        "java",
        "php",
        "ruby",
        "sales-led",
        "status-page",
        "soc2"
      ],
      "lastRelease": "2026-10-07",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 60.7,
        "grade": "C",
        "agentReady": false,
        "rank": 392,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 3,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 75,
          "maintenance": 78,
          "payments": 13,
          "reliability": 73,
          "schema": 87,
          "security": 52,
          "transparency": 60
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": -3,
        "negativeNotes": [
          "2 to 7 October 2026. The API changelog marks five changes applied to the pinned 2026-07-21 release as breaking (address access rules and import `userId` on 2 October, filing pause window and a changed error code on 5 October, billing callers on 7 October), while the docs say a pinned release can't change an integration. Each is documented with migration steps on the day, so we deducted the minimum of 3. No advance notice was found (https://docs.trykintsugi.com/reference/changelog)"
        ],
        "verdict": "The docs are built for machine readers, with llms.txt, Markdown pages, a public OpenAPI 3.1 file, a dated changelog and an MCP server whose 55 tools carry read-only and destructive annotations. API keys need the custom-priced Premium plan and carry no scopes, no general rate limit is published, and breaking changes reached the pinned 2026-07-21 release in October 2026.",
        "bestFor": "An agent working for a seller that already has Kintsugi Premium and wants estimates, transaction sync, exemptions, nexus, registrations and filing status through one API, or read-only answers about an account through the OAuth MCP server.",
        "strengths": [
          "Docs served for agents. `llms.txt` indexes 682 pages, every page has a `.md` twin, and `llms-full.txt` holds the full text",
          "Public OpenAPI 3.1 file at `https://api.trykintsugi.com/openapi.json`, readable without a key, with 901 operations and 1,325 schemas",
          "The MCP server at `https://docs.trykintsugi.com/mcp` lists 55 tools, each with readOnlyHint, destructiveHint and idempotentHint set",
          "A second MCP server at `https://mcp.trykintsugi.com/mcp` uses OAuth 2.1 with PKCE and dynamic client registration, and Kintsugi says its 46 tools are all read-only",
          "One error envelope on the Tenanted API with a stable `code`, a `requestId` and field-level `errors`, and creates that are idempotent on `externalId` and `source`"
        ],
        "weaknesses": [
          "API access, SDKs and real-time tax calculation are listed only under Premium, which is priced on request. API keys need a paid plan that includes them",
          "Nine changelog entries from 17 September to 7 October 2026 are marked breaking, five on the pinned 2026-07-21 release and four on v1. No advance notice was found",
          "No general rate limit is published and no `Retry-After` header is documented. The docs say only to retry 429, 500 and 503 with backoff",
          "API keys act on a whole organisation with no scopes or read-only mode. Expiry is the only setting",
          "No `security.txt`, disclosure policy, bug bounty, uptime SLA document or subprocessor list was found on the public pages"
        ],
        "agentNotes": [
          "Send `Api-Key` and pin `Api-Version` (for example `2026-10-06`) on Tenanted API calls to `https://api.trykintsugi.com`. Without the header a request runs against `2026-07-21`",
          "Use `x-api-key` and `x-organization-id` with `/v1` paths for the SDKs and the docs MCP server. They don't cover the Tenanted API",
          "Call `POST /tax-estimations` for a quote. Nothing is stored. Record the sale with a transaction create, which answers 202, then check `processingStatus` before reading tax totals",
          "Always send `externalId` on creates. A repeat with the same `externalId` and `source` returns the stored record with 200 and doesn't apply the new fields",
          "Branch on the error `code`, not the message. Retry 429, 500 and 503 with exponential backoff, and restart paging from the first page on `stale_cursor`"
        ],
        "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": 60.7
          }
        ],
        "editorialScores": {
          "ergonomics": 75,
          "maintenance": 78,
          "payments": 13,
          "reliability": 73,
          "schema": 87,
          "security": 52,
          "transparency": 44
        },
        "provenanceScore": 75
      },
      "connect": {
        "install": "pip install kintsugi-tax-platform-sdk",
        "http": "curl https://api.trykintsugi.com/products/categories \\\n  -H \"Api-Key: $KINTSUGI_API_KEY\" \\\n  -H \"Api-Version: 2026-07-21\"",
        "config": {
          "mcpServers": {
            "kintsugi": {
              "headers": {
                "X-API-KEY": "your-api-key",
                "X-ORGANIZATION-ID": "your-org-id"
              },
              "url": "https://docs.trykintsugi.com/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/tax.calculate",
        "tool": "https://letme.dev/kintsugi"
      },
      "area": "domain-data",
      "unitPrices": [
        {
          "item": "Starter plan, per filing or registration",
          "unit": "tx",
          "usd": 75,
          "note": "Starting price. API access is not included in Starter and is listed only under Premium, which is quoted by sales"
        }
      ],
      "provenance": {
        "legalEntity": "Kintsugi AI, Inc.",
        "domain": "trykintsugi.com",
        "domainRegistered": "2023-03-10",
        "endpointOnVendorDomain": true,
        "terms": "https://trykintsugi.com/terms-of-service",
        "privacy": "https://trykintsugi.com/privacy-policy",
        "statusPage": "https://status.trykintsugi.com",
        "changelog": "https://docs.trykintsugi.com/reference/changelog",
        "securityTxt": "none",
        "checked": "2026-10-08",
        "notes": [
          "The terms of service (last updated 29 September 2026) name Kintsugi AI, Inc., a Delaware corporation at 2261 Market St, Suite 5931, San Francisco, and cover the platform unless a signed Customer Agreement applies.",
          "The terms incorporate the privacy policy (last updated 13 April 2025) and the Data Processing Agreement at trykintsugi.com/data-processing-agreement (last updated 26 August 2026).",
          "The API answers at api.trykintsugi.com and the MCP servers at docs.trykintsugi.com and mcp.trykintsugi.com, all on the vendor's domain.",
          "trykintsugi.com/.well-known/security.txt returns 404. The security page names no disclosure address or bug bounty.",
          "RDAP for trykintsugi.com gives a registration date of 2023-03-10 and GoDaddy as registrar."
        ],
        "score": 75
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/kintsugi.json",
      "live": {
        "slug": "kintsugi",
        "probe": {
          "target": "https://api.trykintsugi.com",
          "method": "get",
          "lastAt": "2026-10-08T21:12:12.887517805Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 596,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 572,
          "p95ms24h": 658,
          "samples24h": 21,
          "samples30d": 21,
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        "vendorStatus": {
          "page": "https://status.trykintsugi.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T21:06:10.4373132Z"
        },
        "updatedAt": "2026-10-08T21:12:12.887517805Z"
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        "a": "HTTP API",
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        "name": "Kind"
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        "a": "HTTP, Streamable HTTP",
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        "a": "OAuth or key",
        "b": "OAuth or key",
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        "a": "Paid",
        "b": "Paid",
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        "a": "no",
        "b": "no",
        "name": "x402"
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      {
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        "a": "yes",
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        "name": "llms.txt"
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      {
        "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"
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      {
        "a": "yes",
        "b": "yes",
        "name": "Terms restrict benchmarking"
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      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
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      {
        "a": "not found in the text",
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      {
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        "b": "71 npm/wk, 10 PyPI/wk",
        "name": "Popularity"
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    ],
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        "question": "Which is better for AI agents, Avalara AvaTax or Kintsugi?"
      },
      {
        "answer": "Both take an API key or an OAuth sign-in.",
        "question": "Do Avalara AvaTax and Kintsugi need an API key?"
      },
      {
        "answer": "Yes. Avalara AvaTax has a hosted endpoint at https://rest.avatax.com/api/v2 and Kintsugi at https://api.trykintsugi.com.",
        "question": "Can an agent call Avalara AvaTax and Kintsugi without installing anything?"
      }
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    "goodFor": [
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        "slug": "avalara",
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      },
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        "aheadOn": [
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        "slug": "kintsugi",
        "watchFor": "API access, SDKs and real-time tax calculation are listed only under Premium, which is priced on request. API keys need a paid plan that includes them"
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        "avalara": 62,
        "by": 11,
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        "key": "reliability",
        "kintsugi": 73,
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "avalara": 85,
        "by": 2,
        "edge": "kintsugi",
        "key": "schema",
        "kintsugi": 87,
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "avalara": 84,
        "by": 9,
        "edge": "avalara",
        "key": "ergonomics",
        "kintsugi": 75,
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        "weight": 13
      },
      {
        "avalara": 65,
        "by": 13,
        "edge": "avalara",
        "key": "security",
        "kintsugi": 52,
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "avalara": 30,
        "by": 17,
        "edge": "avalara",
        "key": "payments",
        "kintsugi": 13,
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "avalara": 79,
        "by": 1,
        "edge": "avalara",
        "key": "maintenance",
        "kintsugi": 78,
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "avalara": 79,
        "by": 19,
        "edge": "avalara",
        "key": "transparency",
        "kintsugi": 60,
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Avalara AvaTax scores 68.8 (B) on agent readiness against Kintsugi's 60.7 (C), and leads in 5 of 7 scored categories. Kintsugi leads on reliability. 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.",
      "kintsugi": "The docs are built for machine readers, with llms.txt, Markdown pages, a public OpenAPI 3.1 file, a dated changelog and an MCP server whose 55 tools carry read-only and destructive annotations. API keys need the custom-priced Premium plan and carry no scopes, no general rate limit is published, and breaking changes reached the pinned 2026-07-21 release in October 2026."
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  "markdown": "Avalara AvaTax scores 68.8 (B) on agent readiness against Kintsugi's 60.7 (C), and leads in 5 of 7 scored categories. Kintsugi leads on reliability. 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- Kintsugi: grade C, 60.7/100, rank #392 of 722. Markdown https://www.anchorterminal.com/tools/kintsugi.md · JSON https://www.anchorterminal.com/api/v1/tools/kintsugi.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- Agent ergonomics, 84 against 75\n- Security \u0026 auth, 65 against 52\n- Payments \u0026 pricing, 30 against 13\n- Transparency \u0026 trust, 79 against 60\n\nAlso in its favour:\n- No incidents deducted, where Kintsugi loses 3 points for them\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### Kintsugi (C)\n\nGood for: An agent working for a seller that already has Kintsugi Premium and wants estimates, transaction sync, exemptions, nexus, registrations and filing status through one API, or read-only answers about an account through the OAuth MCP server.\n\nAhead on:\n- Reliability, 73 against 62\n\nWatch for: API access, SDKs and real-time tax calculation are listed only under Premium, which is priced on request. API keys need a paid plan that includes them\n\n\n## Score by category\n\n| Category | Weight | Avalara AvaTax | Kintsugi | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 62 | 73 | Kintsugi +11 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 87 | Kintsugi +2 |\n| Agent ergonomics | 13% (16.2 this run) | 84 | 75 | Avalara AvaTax +9 |\n| Security \u0026 auth | 14% (17.5 this run) | 65 | 52 | Avalara AvaTax +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 13 | Avalara AvaTax +17 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 79 | 78 | Avalara AvaTax +1 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 79 | 60 | Avalara AvaTax +19 |\n| Negative events | ≤15 | 0 | -3 | |\n| **Total** | | **68.8 · B** | **60.7 · C** | |\n\n## Facts side by side\n\n| Fact | Avalara AvaTax | Kintsugi |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Avalara, Inc. | Kintsugi AI, Inc. |\n| Hosted endpoint | `https://rest.avatax.com/api/v2` | `https://api.trykintsugi.com` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth or 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 the Kintsugi Terms of Service. The Python SDK repository is MIT |\n| Tools exposed | 10 | 55 |\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 | 2026-10-07 |\n| Terms last updated | 2023-05-01 | 2026-09-29 |\n| Privacy policy last updated | 2022-08-08 | 2025-04-13 |\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 | yes | yes |\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 | 71 npm/wk, 10 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**Kintsugi.** The docs are built for machine readers, with llms.txt, Markdown pages, a public OpenAPI 3.1 file, a dated changelog and an MCP server whose 55 tools carry read-only and destructive annotations. API keys need the custom-priced Premium plan and carry no scopes, no general rate limit is published, and breaking changes reached the pinned 2026-07-21 release in October 2026.\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### Kintsugi\n\n1. Send `Api-Key` and pin `Api-Version` (for example `2026-10-06`) on Tenanted API calls to `https://api.trykintsugi.com`. Without the header a request runs against `2026-07-21`\n2. Use `x-api-key` and `x-organization-id` with `/v1` paths for the SDKs and the docs MCP server. They don't cover the Tenanted API\n3. Call `POST /tax-estimations` for a quote. Nothing is stored. Record the sale with a transaction create, which answers 202, then check `processingStatus` before reading tax totals\n4. Always send `externalId` on creates. A repeat with the same `externalId` and `source` returns the stored record with 200 and doesn't apply the new fields\n5. Branch on the error `code`, not the message. Retry 429, 500 and 503 with exponential backoff, and restart paging from the first page on `stale_cursor`\n\n## Questions\n\n### Which is better for AI agents, Avalara AvaTax or Kintsugi?\n\nAvalara AvaTax scores 68.8 (B) on agent readiness against Kintsugi's 60.7 (C), and leads in 5 of 7 scored categories. Kintsugi leads on reliability.\n\n### Do Avalara AvaTax and Kintsugi need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Avalara AvaTax and Kintsugi without installing anything?\n\nYes. Avalara AvaTax has a hosted endpoint at https://rest.avatax.com/api/v2 and Kintsugi at https://api.trykintsugi.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/avalara-vs-kintsugi.json, and with the fewest tokens: https://www.anchorterminal.com/compare/avalara-vs-kintsugi.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"avalara\", \"b\": \"kintsugi\"}`. From a terminal: `anchor compare avalara kintsugi`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/avalara.json and https://www.anchorterminal.com/api/v1/tools/kintsugi.json\n\n## Other comparisons with Avalara AvaTax or Kintsugi\n\n- [Anrok vs Avalara AvaTax](https://www.anchorterminal.com/compare/anrok-vs-avalara.md)\n- [Anrok vs Kintsugi](https://www.anchorterminal.com/compare/anrok-vs-kintsugi.md)\n- [Avalara AvaTax vs Fonoa](https://www.anchorterminal.com/compare/avalara-vs-fonoa.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- [Kintsugi vs Numeral](https://www.anchorterminal.com/compare/kintsugi-vs-numeral.md)\n- [Kintsugi vs Quaderno](https://www.anchorterminal.com/compare/kintsugi-vs-quaderno.md)\n- [Kintsugi vs TaxCloud](https://www.anchorterminal.com/compare/kintsugi-vs-taxcloud.md)\n- [Kintsugi vs TaxJar](https://www.anchorterminal.com/compare/kintsugi-vs-taxjar.md)\n- [Kintsugi vs Vertex O Series](https://www.anchorterminal.com/compare/kintsugi-vs-vertex-tax.md)\n- [Kintsugi vs Zamp](https://www.anchorterminal.com/compare/kintsugi-vs-zamp.md)\n",
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