{ "data": { "a": { "slug": "anrok", "name": "Anrok", "vendor": "Anrok, Inc.", "vendorUrl": "https://www.anrok.com", "kind": "http-api", "category": "tax", "summary": "Anrok is a hosted sales tax, VAT and GST compliance platform for software and ecommerce sellers. Its API calculates tax and records transactions, and Anrok registers, files and remits. A remote MCP server gives AI assistants access to the account.", "url": "https://www.anchorterminal.com/tools/anrok", "markdownUrl": "https://www.anchorterminal.com/tools/anrok.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/anrok.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/anrok.json", "license": "Proprietary service under the Anrok SaaS Services Agreement. The OpenAPI file states \"All rights reserved\"", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.anrok.com", "packages": [], "auth": "mixed", "authNotes": "The API takes a seller API key as a Bearer token, in the form {sellerId}/{apiKeyId}/secret.{secret}. Any seller account can create keys under Settings, Manage API keys. A key has a note and an enabled switch, with no scopes found. The MCP server uses OAuth 2.1 with PKCE (S256) and dynamic client registration. The user signs in with an Anrok login and approves any of six scopes (certificates, customers, products, registrations, transactionsRead, transactionsWrite), and access follows that user's role. A seller account comes through Anrok's sales team, and MCP needs a plan that includes it.", "pricing": "paid", "pricingNotes": "Starter is $100 per market a month, a market being one jurisdiction where the seller registers and files. Calculation, filing and MCP are included, and Anrok says high-volume Starter sellers may pay additional fees. Custom is quoted by sales and adds the advanced data API and address resolution API. No free tier or self-serve signup was found. Every seller account has a sandbox, and Anrok says pre-sale sandbox access is available to companies evaluating Custom (https://www.anrok.com/pricing, checked 2026-10-08).", "priceSummary": "$100 / mo", "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": 31, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://apidocs.anrok.com", "llmsTxt": "https://www.anrok.com/llms.txt", "openapi": "https://apidocs.anrok.com/openapi.yaml", "capabilities": [ "tax.calculate", "tax.transactions", "tax.exemptions", "tax.filing" ], "tags": [ "hosted", "paid", "closed-source", "api-key", "oauth", "mcp", "openapi", "sandbox", "sales-led", "status-page", "soc2" ], "lastRelease": "2026-10-06", "graded": true, "anchor": { "graded": true, "score": 61.6, "grade": "C", "agentReady": false, "rank": 361, "ranked": true, "rankOf": 722, "categoryRank": 2, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 70, "maintenance": 47, "payments": 15, "reliability": 88, "schema": 71, "security": 59, "transparency": 54 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The public OpenAPI 3.1 spec covers 26 operations with typed error codes, and the remote MCP server uses OAuth 2.1 with six scopes and keeps voids, refunds and filing approval away from the model. Access needs a seller account arranged through sales, API keys carry no scopes, and no API changelog, SDK or subprocessor list was found.", "bestFor": "An agent working for a software or ecommerce seller that already uses Anrok and wants calculation, exemption certificates and filing status in one account.", "strengths": [ "Public OpenAPI 3.1 spec at apidocs.anrok.com/openapi.yaml with 26 operations, 45 enums and typed error codes on 409 responses", "Remote MCP server at mcp.anrok.com/mcp with OAuth 2.1, PKCE, dynamic client registration, six scopes and a revocation endpoint", "MCP has no void, negation or filing-approval tool, and Anrok says all write operations are audited", "Rate limit of 10 requests a second is published, and 429 responses carry an integer Retry-After header", "Status page shows no incident since 10 March 2026, and the security page lists SOC 1 Type II and SOC 2 Type II" ], "weaknesses": [ "No self-serve signup. Starter is $100 per market a month through \"Talk to us\", and Custom is quoted by sales", "API keys have a note and an enabled switch only. No scopes, read-only mode or expiry found in the help centre article", "No API changelog, deprecation policy or official SDK found. The spec is version 1.1 with no dated history", "List transactions, filings, tax ID validation, certificate requests and street-level international addresses are premium and enabled on request", "No security.txt, disclosure policy or public subprocessor list. The DPA is available on request only" ], "agentNotes": [ "Send every call as a POST with a JSON body to https://api.anrok.com, including reads such as /v1/seller/products/list", "Call createEphemeral for a quote and createOrUpdate only when the invoice is final. createOrUpdate saves the transaction for filing", "Reuse the same transaction id on a retry. createOrUpdate overwrites by id, so a repeat doesn't create a second record", "Expect transactionFrozenForFiling once a transaction is on a filed return. Negate it with createNegation and write a new id with a suffix such as :s2", "On 429 wait the number of seconds in Retry-After. The default limit is 10 requests a second per seller account" ], "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": 61.6 } ], "editorialScores": { "ergonomics": 70, "maintenance": 47, "payments": 15, "reliability": 88, "schema": 71, "security": 59, "transparency": 38 }, "provenanceScore": 70 }, "connect": { "http": "curl https://api.anrok.com/v1/seller/transactions/createOrUpdate \\\n -H \"Authorization: Bearer $anrok_api_key\" \\\n --json '{\"id\":\"my-first-transaction\",\"accountingDate\":\"2023-01-01\",\"currencyCode\":\"USD\",\"lineItems\":[{\"productExternalId\":\"saas-product\",\"amount\":1050}],\"customerId\":\"customer-1\",\"customerName\":\"Customer 1\",\"customerAddress\":{\"country\":\"us\",\"line1\":\"310 S Houston St\",\"city\":\"Dallas\",\"state\":\"TX\",\"zipCode\":\"75202\"}}'", "claudeCode": "claude mcp add --transport http anrok https://mcp.anrok.com/mcp", "config": { "mcpServers": { "anrok": { "url": "https://mcp.anrok.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/tax.calculate", "tool": "https://letme.dev/anrok" }, "area": "domain-data", "unitPrices": [ { "item": "Starter plan, per market", "unit": "month", "usd": 100, "note": "One market is one jurisdiction where the seller registers and files. Additional fees may apply at high transaction volumes" } ], "provenance": { "legalEntity": "Anrok, Inc.", "domain": "anrok.com", "domainRegistered": "2019-01-06", "endpointOnVendorDomain": true, "terms": "https://www.anrok.com/privacy-terms", "privacy": "https://www.anrok.com/privacy-terms", "statusPage": "https://anrok-status.com", "changelog": "", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms of service (last updated July 2026) name Anrok, Inc., a Delaware corporation, and are governed by California law with courts in San Francisco.", "Terms, the privacy notice (effective May 2024) and the Remittances Services Agreement (effective October 2025) share one page at anrok.com/privacy-terms.", "The API answers at api.anrok.com and the MCP server at mcp.anrok.com, both on the vendor's domain.", "www.anrok.com/.well-known/security.txt returns 404. The security page names no disclosure address or bug bounty.", "The Statuspage site answers at anrok.statuspage.io and gives its address as anrok-status.com. We found no link to it on the pages we read.", "No API changelog was found. anrok.com/type/product-updates is a blog of product announcements, the latest dated 7 July 2026.", "RDAP for anrok.com gives a registration date of 2019-01-06." ], "score": 70 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/anrok.json", "live": { "slug": "anrok", "probe": { "target": "https://api.anrok.com", "method": "get", "lastAt": "2026-10-08T21:53:15.541083786Z", "lastOk": true, "lastStatus": 404, "lastMs": 148, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 137, "p95ms24h": 196, "samples24h": 71, "samples30d": 71, "days": [ { "date": "2026-10-08", "probes": 71, "ok": 71 } ] }, "vendorStatus": { "page": "https://anrok-status.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-08T21:57:42.127588851Z" }, "securityTxt": { "url": "https://anrok.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:38:57.64505605Z" }, "pages": [ { "url": "https://www.anrok.com/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-08T18:26:08.213536567Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "65c19e0d0b34" }, { "url": "https://www.anrok.com/privacy-terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:26:10.475081688Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "4eecf8a9839f" } ], "updatedAt": "2026-10-08T21:57:42.127588851Z" } }, "answer": "Anrok scores 61.6 (C) 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": "2026-10-08T21:53:22.577198926Z", "lastOk": true, "lastStatus": 404, "lastMs": 68, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 81, "p95ms24h": 161, "samples24h": 28, "samples30d": 28, "days": [ { "date": "2026-10-08", "probes": 28, "ok": 28 } ] }, "vendorStatus": { "page": "https://status.fonoa.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-08T19:38:33.601208747Z" }, "updatedAt": "2026-10-08T21:53:22.577198926Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Anrok, Inc.", "b": "Fonoa Technologies Limited", "name": "Vendor" }, { "a": "https://api.anrok.com", "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 Anrok SaaS Services Agreement. The OpenAPI file states \"All rights reserved\"", "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": "31", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-06", "b": "2026-10-02", "name": "Last release" }, { "a": "2026-07-01", "b": "no document linked", "name": "Terms last updated" }, { "a": "2026-07-01", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "", "name": "Customer content may train models" }, { "a": "yes", "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" } ], "faq": [ { "answer": "Anrok scores 61.6 (C) on agent readiness against Fonoa's 51.7 (D), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Anrok or Fonoa?" }, { "answer": "Anrok takes an API key or an OAuth sign-in. Fonoa needs an API key.", "question": "Do Anrok and Fonoa need an API key?" }, { "answer": "Yes. Anrok has a hosted endpoint at https://api.anrok.com and Fonoa at https://api.fonoa.com.", "question": "Can an agent call Anrok and Fonoa without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 88 against 66", "Agent ergonomics, 70 against 64", "Security \u0026 auth, 59 against 47", "Payments \u0026 pricing, 15 against 3", "Transparency \u0026 trust, 54 against 48" ], "also": null, "goodFor": "An agent working for a software or ecommerce seller that already uses Anrok and wants calculation, exemption certificates and filing status in one account.", "slug": "anrok", "watchFor": "No self-serve signup. Starter is $100 per market a month through \"Talk to us\", and Custom is quoted by sales" }, { "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" } ], "job": { "capability": "tax.calculate", "name": "Tax calculate" }, "others": [ { "json": "https://www.anchorterminal.com/compare/anrok-vs-avalara.json", "title": "Anrok vs Avalara AvaTax", "url": "https://www.anchorterminal.com/compare/anrok-vs-avalara" }, { "json": "https://www.anchorterminal.com/compare/anrok-vs-kintsugi.json", "title": "Anrok vs Kintsugi", "url": "https://www.anchorterminal.com/compare/anrok-vs-kintsugi" }, { "json": "https://www.anchorterminal.com/compare/anrok-vs-numeral.json", "title": "Anrok vs Numeral", "url": "https://www.anchorterminal.com/compare/anrok-vs-numeral" }, { "json": "https://www.anchorterminal.com/compare/anrok-vs-quaderno.json", "title": "Anrok vs Quaderno", "url": "https://www.anchorterminal.com/compare/anrok-vs-quaderno" }, { "json": "https://www.anchorterminal.com/compare/anrok-vs-taxcloud.json", "title": "Anrok vs TaxCloud", "url": "https://www.anchorterminal.com/compare/anrok-vs-taxcloud" }, { "json": "https://www.anchorterminal.com/compare/anrok-vs-taxjar.json", "title": "Anrok vs TaxJar", "url": "https://www.anchorterminal.com/compare/anrok-vs-taxjar" }, { "json": "https://www.anchorterminal.com/compare/anrok-vs-vertex-tax.json", "title": "Anrok vs Vertex O Series", "url": "https://www.anchorterminal.com/compare/anrok-vs-vertex-tax" }, { "json": "https://www.anchorterminal.com/compare/anrok-vs-zamp.json", "title": "Anrok vs Zamp", "url": "https://www.anchorterminal.com/compare/anrok-vs-zamp" }, { "json": "https://www.anchorterminal.com/compare/avalara-vs-fonoa.json", "title": "Avalara AvaTax vs Fonoa", "url": "https://www.anchorterminal.com/compare/avalara-vs-fonoa" }, { "json": "https://www.anchorterminal.com/compare/fonoa-vs-kintsugi.json", "title": "Fonoa vs Kintsugi", "url": "https://www.anchorterminal.com/compare/fonoa-vs-kintsugi" }, { "json": "https://www.anchorterminal.com/compare/fonoa-vs-numeral.json", "title": "Fonoa vs Numeral", "url": "https://www.anchorterminal.com/compare/fonoa-vs-numeral" }, { "json": "https://www.anchorterminal.com/compare/fonoa-vs-quaderno.json", "title": "Fonoa vs Quaderno", "url": "https://www.anchorterminal.com/compare/fonoa-vs-quaderno" }, { "json": "https://www.anchorterminal.com/compare/fonoa-vs-taxcloud.json", "title": "Fonoa vs TaxCloud", "url": "https://www.anchorterminal.com/compare/fonoa-vs-taxcloud" }, { "json": "https://www.anchorterminal.com/compare/fonoa-vs-taxjar.json", "title": "Fonoa vs TaxJar", "url": "https://www.anchorterminal.com/compare/fonoa-vs-taxjar" }, { "json": "https://www.anchorterminal.com/compare/fonoa-vs-vertex-tax.json", "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": [ { "anrok": 88, "by": 22, "edge": "anrok", "fonoa": 66, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "anrok": 71, "by": 3, "edge": "anrok", "fonoa": 68, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "anrok": 70, "by": 6, "edge": "anrok", "fonoa": 64, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "anrok": 59, "by": 12, "edge": "anrok", "fonoa": 47, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "anrok": 15, "by": 12, "edge": "anrok", "fonoa": 3, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "anrok": 47, "by": 2, "edge": "fonoa", "fonoa": 49, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "anrok": 54, "by": 6, "edge": "anrok", "fonoa": 48, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Anrok scores 61.6 (C) on agent readiness against Fonoa's 51.7 (D), and leads in 6 of 7 scored categories. Both do tax calculate.", "verdicts": { "anrok": "The public OpenAPI 3.1 spec covers 26 operations with typed error codes, and the remote MCP server uses OAuth 2.1 with six scopes and keeps voids, refunds and filing approval away from the model. Access needs a seller account arranged through sales, API keys carry no scopes, and no API changelog, SDK or subprocessor list was found.", "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." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/anrok-vs-fonoa", "json": "https://www.anchorterminal.com/compare/anrok-vs-fonoa.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/anrok-vs-fonoa.md", "slim": "https://www.anchorterminal.com/compare/anrok-vs-fonoa.min.md" }, "markdown": "Anrok scores 61.6 (C) on agent readiness against Fonoa's 51.7 (D), and leads in 6 of 7 scored categories. Both do tax calculate.\n\n- Anrok: grade C, 61.6/100, rank #361 of 722. Markdown https://www.anchorterminal.com/tools/anrok.md · JSON https://www.anchorterminal.com/api/v1/tools/anrok.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### Anrok (C)\n\nGood for: An agent working for a software or ecommerce seller that already uses Anrok and wants calculation, exemption certificates and filing status in one account.\n\nAhead on:\n- Reliability, 88 against 66\n- Agent ergonomics, 70 against 64\n- Security \u0026 auth, 59 against 47\n- Payments \u0026 pricing, 15 against 3\n- Transparency \u0026 trust, 54 against 48\n\nWatch for: No self-serve signup. Starter is $100 per market a month through \"Talk to us\", and Custom is quoted by sales\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 | Anrok | Fonoa | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 88 | 66 | Anrok +22 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 71 | 68 | Anrok +3 |\n| Agent ergonomics | 13% (16.2 this run) | 70 | 64 | Anrok +6 |\n| Security \u0026 auth | 14% (17.5 this run) | 59 | 47 | Anrok +12 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 15 | 3 | Anrok +12 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 47 | 49 | Fonoa +2 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 54 | 48 | Anrok +6 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **61.6 · C** | **51.7 · D** | |\n\n## Facts side by side\n\n| Fact | Anrok | Fonoa |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Anrok, Inc. | Fonoa Technologies Limited |\n| Hosted endpoint | `https://api.anrok.com` | `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 Anrok SaaS Services Agreement. The OpenAPI file states \"All rights reserved\" | 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 | 31 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-06 | 2026-10-02 |\n| Terms last updated | 2026-07-01 | no document linked |\n| Privacy policy last updated | 2026-07-01 | no date given |\n| Customer content may train models | not found in the text | |\n| Terms restrict automated access | yes | |\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\n## Verdicts\n\n**Anrok.** The public OpenAPI 3.1 spec covers 26 operations with typed error codes, and the remote MCP server uses OAuth 2.1 with six scopes and keeps voids, refunds and filing approval away from the model. Access needs a seller account arranged through sales, API keys carry no scopes, and no API changelog, SDK or subprocessor list was found.\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### Anrok\n\n1. Send every call as a POST with a JSON body to https://api.anrok.com, including reads such as /v1/seller/products/list\n2. Call createEphemeral for a quote and createOrUpdate only when the invoice is final. createOrUpdate saves the transaction for filing\n3. Reuse the same transaction id on a retry. createOrUpdate overwrites by id, so a repeat doesn't create a second record\n4. Expect transactionFrozenForFiling once a transaction is on a filed return. Negate it with createNegation and write a new id with a suffix such as :s2\n5. On 429 wait the number of seconds in Retry-After. The default limit is 10 requests a second per seller account\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, Anrok or Fonoa?\n\nAnrok scores 61.6 (C) on agent readiness against Fonoa's 51.7 (D), and leads in 6 of 7 scored categories.\n\n### Do Anrok and Fonoa need an API key?\n\nAnrok takes an API key or an OAuth sign-in. Fonoa needs an API key.\n\n### Can an agent call Anrok and Fonoa without installing anything?\n\nYes. Anrok has a hosted endpoint at https://api.anrok.com and Fonoa at https://api.fonoa.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/anrok-vs-fonoa.json, and with the fewest tokens: https://www.anchorterminal.com/compare/anrok-vs-fonoa.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"anrok\", \"b\": \"fonoa\"}`. From a terminal: `anchor compare anrok fonoa`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/anrok.json and https://www.anchorterminal.com/api/v1/tools/fonoa.json\n\n## Other comparisons with Anrok or Fonoa\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- [Anrok vs Numeral](https://www.anchorterminal.com/compare/anrok-vs-numeral.md)\n- [Anrok vs Quaderno](https://www.anchorterminal.com/compare/anrok-vs-quaderno.md)\n- [Anrok vs TaxCloud](https://www.anchorterminal.com/compare/anrok-vs-taxcloud.md)\n- [Anrok vs TaxJar](https://www.anchorterminal.com/compare/anrok-vs-taxjar.md)\n- [Anrok vs Vertex O Series](https://www.anchorterminal.com/compare/anrok-vs-vertex-tax.md)\n- [Anrok vs Zamp](https://www.anchorterminal.com/compare/anrok-vs-zamp.md)\n- [Avalara AvaTax vs Fonoa](https://www.anchorterminal.com/compare/avalara-vs-fonoa.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", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Anrok vs Fonoa", "url": "" } ], "description": "Anrok scores 61.6 (C) on agent readiness against Fonoa's 51.7 (D), and leads in 6 of 7 scored categories. Both do tax calculate. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Anrok C 61.6", "Fonoa D 51.7", "scores" ], "h1": "Anrok vs Fonoa", "image": "https://www.anchorterminal.com/assets/og/compare-anrok-vs-fonoa.png", "path": "/compare/anrok-vs-fonoa", "published": "2026-10-01", "section": "tools", "title": "Anrok vs Fonoa for AI agents, C 61.6 vs D 51.7 | Anchor Terminal", "toc": null, "updated": "2026-10-08", "url": "https://www.anchorterminal.com/compare/anrok-vs-fonoa" }, "tokens": { "markdown": 2100, "slim": 680 }, "version": 1 }