{ "data": { "a": { "slug": "agentzon", "name": "Agentzon", "vendor": "Merit Systems, Inc.", "vendorUrl": "https://agentzon.co", "kind": "http-api", "category": "commerce", "summary": "Online store for household essentials that agents can search and buy from through a JSON API. Sells 466 purchasable items shipped within the U.S. by Merit Systems Inc, with payment on a private checkout page.", "url": "https://www.anchorterminal.com/tools/agentzon", "markdownUrl": "https://www.anchorterminal.com/tools/agentzon.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/agentzon.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/agentzon.json", "transports": [ "http" ], "remoteUrl": "https://agentzon.co/api", "packages": [], "auth": "none", "authNotes": "No accounts, registration or API keys for search, product lookup or checkout creation. Order status takes a per-order bearer token (orderToken) issued by checkout. It is read-only, never expires and has no revocation endpoint. The UCP endpoint takes no credential and asks for a UCP-Agent header naming the platform profile (https://agentzon.co/auth.md).", "pricing": "usage", "pricingNotes": "The API has no fee and no plan. The buyer pays the item price per order, with sales tax added at checkout and free shipping to U.S. addresses. No free tier, trial or test mode was found. Every product reports checkoutMode live (checked 10 October 2026).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in llms.txt, agents.md, openapi.json, auth.md or the storefront script (checked 10 October 2026).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-10" }, "docsUrl": "https://agentzon.co/agents.md", "llmsTxt": "https://agentzon.co/llms.txt", "openapi": "https://agentzon.co/openapi.json", "capabilities": [ "commerce.products", "commerce.checkout", "commerce.orders", "commerce.headless" ], "tags": [ "hosted", "openapi", "llms-txt", "no-key", "no-signup", "webmcp", "ucp", "stripe", "us-only", "closed-source", "no-status-page", "sales-tax" ], "graded": true, "anchor": { "graded": true, "score": 51.4, "grade": "D", "agentReady": false, "rank": 753, "ranked": true, "rankOf": 955, "categoryRank": 16, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 78, "maintenance": 5, "payments": 40, "reliability": 40, "schema": 83, "security": 45, "transparency": 45 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-10" }, "negative": 0, "verdict": "Public OpenAPI 3.1 description and llms.txt, with a whole-basket checkout that needs no account or key. The buyer pays on a private page, so a person completes each purchase. No status page, security.txt or registered seller address was found on agentzon.co, and 34 of 500 listed items cannot be bought.", "bestFor": "A shopping destination for an agent buying everyday household goods for a U.S. address.", "strengths": [ "OpenAPI 3.1 description at /openapi.json, with enums, length limits, and documented 400, 404, 409 and 429 responses", "Whole basket in one checkout call, with an Idempotency-Key on checkout and on catalogue suggestions", "No account, registration or API key for search or checkout, and a read-only order token for payment status", "The buyer reviews the total and pays on a private checkout page, so an agent cannot charge the card itself", "Terms, returns and privacy pages name the seller, the refund window and a support address" ], "weaknesses": [ "No status page, security.txt or disclosure contact was found. Each probe returned 404", "The terms name Merit Systems Inc as seller, but agentzon.co gives no registered address, state or company number", "Change-of-mind returns exclude food, medicines and personal hygiene items. Personal care is the largest department, with 107 of 500 items", "Source retailers are not named. The policies say only that third parties source and deliver orders", "The UCP endpoint advertised in the profile answered 404 to a GET, and the POST route was not tested" ], "agentNotes": [ "Search with GET /api/products. Use only items with checkoutAvailable true and a non-null unitAmount, because a null price means unavailable, never free", "Send every item and quantity in one POST /api/checkout, with a new Idempotency-Key for each purchase attempt and the same key only to retry that basket", "Show the buyer the product image from /api/products/{id}/image and get their approval before opening the checkout URL", "Tell the buyer that catalogue prices exclude sales tax, that shipping is U.S. only and that change-of-mind returns exclude hygiene and food items", "Keep the checkout URL and the orderToken private. A paid status confirms payment, not shipment" ], "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": 51.4 } ], "editorialScores": { "ergonomics": 78, "maintenance": 5, "payments": 40, "reliability": 40, "schema": 83, "security": 45, "transparency": 35 }, "provenanceScore": 55 }, "connect": { "http": "curl \"https://agentzon.co/api/products?q=Colgate%20toothpaste\u0026limit=5\"" }, "letme": { "capability": "https://letme.dev/commerce.products", "tool": "https://letme.dev/agentzon" }, "area": "business", "provenance": { "legalEntity": "Merit Systems Inc (agentzon.co terms); Merit Systems, Inc. (merit.systems terms)", "domain": "agentzon.co", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://agentzon.co/terms", "privacy": "https://agentzon.co/privacy", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-10", "notes": [ "agentzon.co/terms, returns and privacy are each dated 8 October 2026. They name Merit Systems Inc as operator, seller and merchant of record, with support at agentzon-support@merit.systems. None of the three gives a postal address.", "merit.systems/terms names Merit Systems, Inc. with a New York address for legal notices (224 West 35th Street, Ste 500 #2218, New York, NY 10001), New York governing law, and no state of incorporation or company number.", "/.well-known/security.txt and /security return 404 on agentzon.co. No changelog page was found at /changelog.", "The domain registration date could not be read. RDAP for .co was unreachable from the research environment." ], "score": 55 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/agentzon.json", "live": { "slug": "agentzon", "probe": { "target": "https://agentzon.co/api", "method": "get", "lastAt": "2026-10-10T21:43:11.517465164Z", "lastOk": true, "lastStatus": 404, "lastMs": 48, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 50, "p95ms24h": 128, "samples24h": 30, "samples30d": 30, "days": [ { "date": "2026-10-10", "probes": 30, "ok": 30 } ] }, "pages": [ { "url": "https://agentzon.co/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-10T18:56:43.075875783Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "de0595c6491b" }, { "url": "https://agentzon.co/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-10T18:56:45.218708349Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "83db3205ec95" } ], "updatedAt": "2026-10-10T21:43:11.517465164Z" } }, "answer": "Square scores 69.2 (B) on agent readiness against Agentzon's 51.4 (D), and leads in 6 of 7 scored categories.", "b": { "slug": "square", "name": "Square", "vendor": "Block, Inc.", "vendorUrl": "https://squareup.com", "kind": "http-api", "category": "commerce", "summary": "Square is Block's commerce and payments platform for sellers. Its REST API covers catalogue, orders, payment links, payments, inventory and customers, with seven SDKs and a beta MCP server hosted at mcp.squareup.com.", "url": "https://www.anchorterminal.com/tools/square", "markdownUrl": "https://www.anchorterminal.com/tools/square.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/square.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/square.json", "repo": "https://github.com/square/square-mcp-server", "license": "Proprietary service under the Square Developer Terms of Service. The MCP server and the OpenAPI specification on GitHub are Apache 2.0, and the Node.js SDK is MIT", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://mcp.squareup.com/mcp", "packages": [ { "registry": "npm", "name": "square" }, { "registry": "npm", "name": "square-mcp-server" }, { "registry": "pypi", "name": "squareup" } ], "auth": "mixed", "authNotes": "Access needs a Square account and an application created in the Developer Console, both self-serve. Two token types go in the `Authorization: Bearer` header. A personal access token gives unrestricted access to the owner's own account, with a separate sandbox token. OAuth access tokens are limited to the scopes a seller grants, expire after 30 days and can be refreshed and revoked. The remote MCP server signs in through OAuth, and Square keeps an allowlist of MCP clients that may register.", "pricing": "usage", "pricingNotes": "The API and sandbox carry no charge. Sellers pay processing fees, 2.9% + 30 cents for card payments through the payments APIs in the US. Square Free is $0 a month, Plus $49 and Premium $149 per location. The sandbox lets an agent start without a contract (https://squareup.com/us/en/payments/our-fees, checked 2026-10-08).", "priceSummary": "2.9% fee", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs index at developer.squareup.com/llms.txt or the OpenAPI spec (checked 2026-10-08).", "endpoints": [] }, "toolCount": 3, "popularity": { "githubStars": null, "npmWeekly": 453743, "pypiWeekly": 72138, "asOf": "2026-10-08" }, "docsUrl": "https://developer.squareup.com/docs", "llmsTxt": "https://developer.squareup.com/llms.txt", "openapi": "https://raw.githubusercontent.com/square/connect-api-specification/master/api.json", "capabilities": [ "commerce.products", "commerce.orders", "commerce.checkout", "commerce.cart", "commerce.headless", "payments.card", "payments.checkout" ], "tags": [ "hosted", "closed-source", "mcp", "oauth", "openapi", "llms-txt", "webhooks", "sandbox", "graphql", "typescript", "python", "status-page", "bug-bounty" ], "lastRelease": "2026-09-16", "graded": true, "anchor": { "graded": true, "score": 69.2, "grade": "B", "agentReady": false, "rank": 195, "ranked": true, "rankOf": 955, "categoryRank": 7, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 83, "maintenance": 81, "payments": 40, "reliability": 58, "schema": 87, "security": 67, "transparency": 70 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The REST API has a public OpenAPI 3.0 spec, OAuth scopes split by read and write for each resource, idempotency keys on writes and a free sandbox. The MCP server is in beta and its remote instance reaches production only. No numeric REST rate limits or SLA were found, and the status page recorded widespread errors on 27 September 2026.", "bestFor": "Agents working for a seller already on Square, on catalogue, inventory, orders, payment links and customers, online and in person.", "strengths": [ "Public OpenAPI 3.0 spec with 332 operations and 1,476 schemas, regenerated for API version 2026-09-16", "OAuth scopes are split by read and write for each resource, and access tokens expire after 30 days", "78 request schemas carry an `idempotency_key`, and the docs describe backoff with jitter for 429 responses", "Free sandbox at connect.squareupsandbox.com with test cards, and API Logs kept for 28 days", "Deprecated APIs are typically retired at least 12 months after deprecation, with dated release notes each month" ], "weaknesses": [ "The MCP server is marked beta, and the remote server reaches production data only", "No numeric rate limits were found for the REST API. Only GraphQL states a figure, 10 queries a second", "No SLA was found in the developer terms or documentation", "The status page recorded widespread latency and errors on 27 September 2026, including payment authorisation", "A personal access token grants unrestricted access to the whole Square account", "97 of the 332 operations in the spec are marked beta" ], "agentNotes": [ "Test against the sandbox first with the local MCP server and `SANDBOX=true`. The remote server at mcp.squareup.com reaches production only", "Set `DISALLOW_WRITES=true` on the local MCP server when the task only reads", "Call `get_service_info`, then `get_type_info`, before each `make_api_request`. The request body is otherwise untyped", "Send a fresh `idempotency_key` on every write, and reuse it when retrying the same write", "Pin `Square-Version` in each request. Use a page cursor within 5 minutes of receiving it" ], "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": 69.2 } ], "editorialScores": { "ergonomics": 83, "maintenance": 81, "payments": 40, "reliability": 58, "schema": 87, "security": 67, "transparency": 56 }, "provenanceScore": 84 }, "connect": { "install": "npx square-mcp-server start", "http": "curl https://connect.squareupsandbox.com/v2/locations \\\n -H 'Square-Version: 2026-09-16' \\\n -H 'Authorization: Bearer {SANDBOX_ACCESS_TOKEN}' \\\n -H 'Content-Type: application/json'", "config": { "mcpServers": { "mcp_square_api": { "args": [ "mcp-remote", "https://mcp.squareup.com/mcp" ], "command": "npx" } } } }, "letme": { "capability": "https://letme.dev/commerce.products", "tool": "https://letme.dev/square" }, "area": "business", "unitPrices": [ { "item": "Card payment through the payments APIs (US)", "unit": "pct", "usd": 2.9, "note": "plus 30 cents per transaction" }, { "item": "ACH bank transfer through the API (US)", "unit": "pct", "usd": 1, "note": "$1 minimum, $5 fee cap" }, { "item": "Square Free", "unit": "month", "usd": 0, "note": "per location" }, { "item": "Square Plus", "unit": "month", "usd": 49, "note": "per location" }, { "item": "Square Premium", "unit": "month", "usd": 149, "note": "per location" } ], "provenance": { "legalEntity": "Block, Inc.", "domain": "squareup.com", "domainRegistered": "2007-05-26", "endpointOnVendorDomain": true, "terms": "https://squareup.com/us/en/legal/general/developers", "privacy": "https://squareup.com/us/en/legal/general/privacy", "statusPage": "https://www.issquareup.com", "changelog": "https://developer.squareup.com/docs/changelog/connect", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The Square Developer Terms of Service (last updated 10 September 2026) are an agreement with Block, Inc. and govern the APIs, SDKs and developer tools. Payment processing through an API is also subject to Square's General Terms.", "The Privacy Notice for Square Sellers and Website Visitors (last updated 15 September 2026) names Block, Inc., 1955 Broadway, Suite 600, Oakland, CA 94612 as the entity for US sellers, with other Square entities for Canada, Japan, Australia and the EU.", "The API answers at connect.squareup.com and the remote MCP server at mcp.squareup.com. The sandbox uses the separate domain squareupsandbox.com.", "squareup.com/.well-known/security.txt and developer.squareup.com/.well-known/security.txt return 404. The security page links a Bugcrowd programme.", "RDAP for squareup.com gives a registration date of 2007-05-26." ], "score": 84 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/square.json", "live": { "slug": "square", "probe": { "target": "https://mcp.squareup.com/mcp", "method": "get", "lastAt": "2026-10-10T21:43:38.764281308Z", "lastOk": true, "lastStatus": 401, "lastMs": 45, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 47, "p95ms24h": 103, "samples24h": 247, "samples30d": 544, "days": [ { "date": "2026-10-08", "probes": 70, "ok": 70 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 224, "ok": 224 } ] }, "vendorStatus": { "page": "https://www.issquareup.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-10T21:41:20.185836633Z" }, "versions": [ { "registry": "github", "name": "square/square-mcp-server", "version": "0.1.2", "released": "2025-04-25", "seenAt": "2026-10-10T18:15:43.969957432Z" }, { "registry": "npm", "name": "square", "version": "46.0.0", "seenAt": "2026-10-10T18:15:41.575402306Z" }, { "registry": "npm", "name": "square-mcp-server", "version": "0.1.2", "seenAt": "2026-10-10T18:15:42.444410914Z" }, { "registry": "pypi", "name": "squareup", "version": "46.0.0.20260916", "released": "2026-09-15", "seenAt": "2026-10-10T18:15:43.775611597Z" } ], "githubStars": 108, "npmWeekly": 368003, "pypiWeekly": 70997, "securityTxt": { "url": "https://squareup.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-10T15:41:31.130768983Z" }, "llmsTxt": { "url": "https://developer.squareup.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-10T14:05:13.576569471Z" }, "pages": [ { "url": "https://developer.squareup.com/docs/changelog/connect", "kind": "changelog", "status": 200, "checkedAt": "2026-10-10T18:59:42.124892317Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "62494a1dd472" }, { "url": "https://squareup.com/us/en/legal/general/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-10T19:10:06.312268685Z", "changedAt": "2026-10-10T19:10:06.312268685Z", "fingerprint": "0f324241f1ba" }, { "url": "https://squareup.com/us/en/legal/general/developers", "kind": "terms", "status": 200, "checkedAt": "2026-10-10T19:10:03.411236671Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "eecff0955171" } ], "updatedAt": "2026-10-10T21:43:38.764281308Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Merit Systems, Inc.", "b": "Block, Inc.", "name": "Vendor" }, { "a": "https://agentzon.co/api", "b": "https://mcp.squareup.com/mcp", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP, Streamable HTTP, stdio", "name": "Transports" }, { "a": "None", "b": "OAuth or key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary service under the Square Developer Terms of Service. The MCP server and the OpenAPI specification on GitHub are Apache 2.0, and the Node.js SDK is MIT", "name": "Licence" }, { "a": "none", "b": "3", "name": "Tools exposed" }, { "a": "yes", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "none", "b": "2026-09-16", "name": "Last release" }, { "a": "", "b": "2026-09-10", "name": "Terms last updated" }, { "a": "", "b": "2026-09-15", "name": "Privacy policy last updated" }, { "a": "", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "", "b": "yes", "name": "Terms restrict automated access" }, { "a": "", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "454k npm/wk, 72k PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "Square scores 69.2 (B) on agent readiness against Agentzon's 51.4 (D), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Agentzon or Square?" }, { "answer": "Agentzon needs no key. Square takes an API key or an OAuth sign-in.", "question": "Do Agentzon and Square need an API key?" }, { "answer": "Yes. Agentzon has a hosted endpoint at https://agentzon.co/api and Square at https://mcp.squareup.com/mcp.", "question": "Can an agent call Agentzon and Square without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": [ "No key needed to call it" ], "goodFor": "A shopping destination for an agent buying everyday household goods for a U.S. address.", "slug": "agentzon", "watchFor": "No status page, security.txt or disclosure contact was found. Each probe returned 404" }, { "aheadOn": [ "Reliability, 58 against 40", "Agent ergonomics, 83 against 78", "Security \u0026 auth, 67 against 45", "Maintenance \u0026 community, 81 against 5", "Transparency \u0026 trust, 70 against 45" ], "also": [ "Runs on your own machine" ], "goodFor": "Agents working for a seller already on Square, on catalogue, inventory, orders, payment links and customers, online and in person.", "slug": "square", "watchFor": "The MCP server is marked beta, and the remote server reaches production data only" } ], "job": { "capability": "commerce.products", "name": "Commerce catalogues" }, "others": [ { "json": "https://www.anchorterminal.com/compare/adobe-commerce-vs-agentzon.json", "title": "Adobe Commerce (Magento) vs Agentzon", "url": "https://www.anchorterminal.com/compare/adobe-commerce-vs-agentzon" }, { "json": "https://www.anchorterminal.com/compare/adobe-commerce-vs-square.json", "title": "Adobe Commerce (Magento) vs Square", "url": "https://www.anchorterminal.com/compare/adobe-commerce-vs-square" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-bigcommerce.json", "title": "Agentzon vs BigCommerce API + MCP", "url": "https://www.anchorterminal.com/compare/agentzon-vs-bigcommerce" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-commerce-layer.json", "title": "Agentzon vs Commerce Layer API + MCP", "url": "https://www.anchorterminal.com/compare/agentzon-vs-commerce-layer" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-commercetools.json", "title": "Agentzon vs commercetools", "url": "https://www.anchorterminal.com/compare/agentzon-vs-commercetools" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-ecwid.json", "title": "Agentzon vs Ecwid by Lightspeed", "url": "https://www.anchorterminal.com/compare/agentzon-vs-ecwid" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-elastic-path.json", "title": "Agentzon vs Elastic Path API + MCP", "url": "https://www.anchorterminal.com/compare/agentzon-vs-elastic-path" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-medusa.json", "title": "Agentzon vs Medusa API + MCP", "url": "https://www.anchorterminal.com/compare/agentzon-vs-medusa" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-saleor.json", "title": "Agentzon vs Saleor API + MCP", "url": "https://www.anchorterminal.com/compare/agentzon-vs-saleor" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-shopify.json", "title": "Agentzon vs Shopify API + MCP", "url": "https://www.anchorterminal.com/compare/agentzon-vs-shopify" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-shopware.json", "title": "Agentzon vs Shopware", "url": "https://www.anchorterminal.com/compare/agentzon-vs-shopware" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-snipcart.json", "title": "Agentzon vs Snipcart API + MCP", "url": "https://www.anchorterminal.com/compare/agentzon-vs-snipcart" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-spree-commerce.json", "title": "Agentzon vs Spree Commerce", "url": "https://www.anchorterminal.com/compare/agentzon-vs-spree-commerce" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-swell.json", "title": "Agentzon vs Swell", "url": "https://www.anchorterminal.com/compare/agentzon-vs-swell" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-vendure.json", "title": "Agentzon vs Vendure", "url": "https://www.anchorterminal.com/compare/agentzon-vs-vendure" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-wix.json", "title": "Agentzon vs Wix Stores and eCommerce API", "url": "https://www.anchorterminal.com/compare/agentzon-vs-wix" }, { "json": "https://www.anchorterminal.com/compare/agentzon-vs-woocommerce.json", "title": "Agentzon vs WooCommerce API + MCP", "url": "https://www.anchorterminal.com/compare/agentzon-vs-woocommerce" }, { "json": "https://www.anchorterminal.com/compare/bigcommerce-vs-square.json", "title": "BigCommerce API + MCP vs Square", "url": "https://www.anchorterminal.com/compare/bigcommerce-vs-square" }, { "json": "https://www.anchorterminal.com/compare/commerce-layer-vs-square.json", "title": "Commerce Layer API + MCP vs Square", "url": "https://www.anchorterminal.com/compare/commerce-layer-vs-square" }, { "json": "https://www.anchorterminal.com/compare/commercetools-vs-square.json", "title": "commercetools vs Square", "url": "https://www.anchorterminal.com/compare/commercetools-vs-square" }, { "json": "https://www.anchorterminal.com/compare/ecwid-vs-square.json", "title": "Ecwid by Lightspeed vs Square", "url": "https://www.anchorterminal.com/compare/ecwid-vs-square" }, { "json": "https://www.anchorterminal.com/compare/elastic-path-vs-square.json", "title": "Elastic Path API + MCP vs Square", "url": "https://www.anchorterminal.com/compare/elastic-path-vs-square" }, { "json": "https://www.anchorterminal.com/compare/medusa-vs-square.json", "title": "Medusa API + MCP vs Square", "url": "https://www.anchorterminal.com/compare/medusa-vs-square" }, { "json": "https://www.anchorterminal.com/compare/saleor-vs-square.json", "title": "Saleor API + MCP vs Square", "url": "https://www.anchorterminal.com/compare/saleor-vs-square" }, { "json": "https://www.anchorterminal.com/compare/shopify-vs-square.json", "title": "Shopify API + MCP vs Square", "url": "https://www.anchorterminal.com/compare/shopify-vs-square" }, { "json": "https://www.anchorterminal.com/compare/shopware-vs-square.json", "title": "Shopware vs Square", "url": "https://www.anchorterminal.com/compare/shopware-vs-square" }, { "json": "https://www.anchorterminal.com/compare/snipcart-vs-square.json", "title": "Snipcart API + MCP vs Square", "url": "https://www.anchorterminal.com/compare/snipcart-vs-square" }, { "json": "https://www.anchorterminal.com/compare/spree-commerce-vs-square.json", "title": "Spree Commerce vs Square", "url": "https://www.anchorterminal.com/compare/spree-commerce-vs-square" }, { "json": "https://www.anchorterminal.com/compare/square-vs-swell.json", "title": "Square vs Swell", "url": "https://www.anchorterminal.com/compare/square-vs-swell" }, { "json": "https://www.anchorterminal.com/compare/square-vs-vendure.json", "title": "Square vs Vendure", "url": "https://www.anchorterminal.com/compare/square-vs-vendure" }, { "json": "https://www.anchorterminal.com/compare/square-vs-wix.json", "title": "Square vs Wix Stores and eCommerce API", "url": "https://www.anchorterminal.com/compare/square-vs-wix" }, { "json": "https://www.anchorterminal.com/compare/square-vs-woocommerce.json", "title": "Square vs WooCommerce API + MCP", "url": "https://www.anchorterminal.com/compare/square-vs-woocommerce" } ], "scores": [ { "agentzon": 40, "by": 18, "edge": "square", "key": "reliability", "name": "Reliability", "square": 58, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "agentzon": 83, "by": 4, "edge": "square", "key": "schema", "name": "Schema \u0026 documentation", "square": 87, "weight": 13 }, { "agentzon": 78, "by": 5, "edge": "square", "key": "ergonomics", "name": "Agent ergonomics", "square": 83, "weight": 13 }, { "agentzon": 45, "by": 22, "edge": "square", "key": "security", "name": "Security \u0026 auth", "square": 67, "weight": 14 }, { "agentzon": 40, "by": 0, "edge": "", "key": "payments", "name": "Payments \u0026 pricing", "square": 40, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "agentzon": 5, "by": 76, "edge": "square", "key": "maintenance", "name": "Maintenance \u0026 community", "square": 81, "weight": 7 }, { "agentzon": 45, "by": 25, "edge": "square", "key": "transparency", "name": "Transparency \u0026 trust", "square": 70, "weight": 7 } ], "summary": "Square scores 69.2 (B) on agent readiness against Agentzon's 51.4 (D), and leads in 6 of 7 scored categories. Both do commerce catalogues.", "verdicts": { "agentzon": "Public OpenAPI 3.1 description and llms.txt, with a whole-basket checkout that needs no account or key. The buyer pays on a private page, so a person completes each purchase. No status page, security.txt or registered seller address was found on agentzon.co, and 34 of 500 listed items cannot be bought.", "square": "The REST API has a public OpenAPI 3.0 spec, OAuth scopes split by read and write for each resource, idempotency keys on writes and a free sandbox. The MCP server is in beta and its remote instance reaches production only. No numeric REST rate limits or SLA were found, and the status page recorded widespread errors on 27 September 2026." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/agentzon-vs-square", "json": "https://www.anchorterminal.com/compare/agentzon-vs-square.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/agentzon-vs-square.md", "slim": "https://www.anchorterminal.com/compare/agentzon-vs-square.min.md" }, "markdown": "Square scores 69.2 (B) on agent readiness against Agentzon's 51.4 (D), and leads in 6 of 7 scored categories. Both do commerce catalogues.\n\n- Agentzon: grade D, 51.4/100, rank #753 of 955. Markdown https://www.anchorterminal.com/tools/agentzon.md · JSON https://www.anchorterminal.com/api/v1/tools/agentzon.json\n- Square: grade B, 69.2/100, rank #195 of 955. Markdown https://www.anchorterminal.com/tools/square.md · JSON https://www.anchorterminal.com/api/v1/tools/square.json\n- Best commerce platforms and checkout APIs for AI agents: https://www.anchorterminal.com/best/commerce/index.md\n- All 153 commerce comparisons: https://www.anchorterminal.com/compare/commerce/index.md\n\n## Which one, for what\n\n### Agentzon (D)\n\nGood for: A shopping destination for an agent buying everyday household goods for a U.S. address.\n\nAlso in its favour:\n- No key needed to call it\n\nWatch for: No status page, security.txt or disclosure contact was found. Each probe returned 404\n\n### Square (B)\n\nGood for: Agents working for a seller already on Square, on catalogue, inventory, orders, payment links and customers, online and in person.\n\nAhead on:\n- Reliability, 58 against 40\n- Agent ergonomics, 83 against 78\n- Security \u0026 auth, 67 against 45\n- Maintenance \u0026 community, 81 against 5\n- Transparency \u0026 trust, 70 against 45\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: The MCP server is marked beta, and the remote server reaches production data only\n\n\n## Score by category\n\n| Category | Weight | Agentzon | Square | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 40 | 58 | Square +18 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 83 | 87 | Square +4 |\n| Agent ergonomics | 13% (16.2 this run) | 78 | 83 | Square +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 45 | 67 | Square +22 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 40 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 5 | 81 | Square +76 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 45 | 70 | Square +25 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **51.4 · D** | **69.2 · B** | |\n\n## Facts side by side\n\n| Fact | Agentzon | Square |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Merit Systems, Inc. | Block, Inc. |\n| Hosted endpoint | `https://agentzon.co/api` | `https://mcp.squareup.com/mcp` |\n| Transports | HTTP | HTTP, Streamable HTTP, stdio |\n| Auth | None | OAuth or key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | none | Proprietary service under the Square Developer Terms of Service. The MCP server and the OpenAPI specification on GitHub are Apache 2.0, and the Node.js SDK is MIT |\n| Tools exposed | none | 3 |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| Last release | none | 2026-09-16 |\n| Terms last updated | | 2026-09-10 |\n| Privacy policy last updated | | 2026-09-15 |\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 | | yes |\n| Popularity | none | 454k npm/wk, 72k PyPI/wk |\n\n## Verdicts\n\n**Agentzon.** Public OpenAPI 3.1 description and llms.txt, with a whole-basket checkout that needs no account or key. The buyer pays on a private page, so a person completes each purchase. No status page, security.txt or registered seller address was found on agentzon.co, and 34 of 500 listed items cannot be bought.\n\n**Square.** The REST API has a public OpenAPI 3.0 spec, OAuth scopes split by read and write for each resource, idempotency keys on writes and a free sandbox. The MCP server is in beta and its remote instance reaches production only. No numeric REST rate limits or SLA were found, and the status page recorded widespread errors on 27 September 2026.\n\n## Before you call either\n\n### Agentzon\n\n1. Search with GET /api/products. Use only items with checkoutAvailable true and a non-null unitAmount, because a null price means unavailable, never free\n2. Send every item and quantity in one POST /api/checkout, with a new Idempotency-Key for each purchase attempt and the same key only to retry that basket\n3. Show the buyer the product image from /api/products/{id}/image and get their approval before opening the checkout URL\n4. Tell the buyer that catalogue prices exclude sales tax, that shipping is U.S. only and that change-of-mind returns exclude hygiene and food items\n5. Keep the checkout URL and the orderToken private. A paid status confirms payment, not shipment\n\n### Square\n\n1. Test against the sandbox first with the local MCP server and `SANDBOX=true`. The remote server at mcp.squareup.com reaches production only\n2. Set `DISALLOW_WRITES=true` on the local MCP server when the task only reads\n3. Call `get_service_info`, then `get_type_info`, before each `make_api_request`. The request body is otherwise untyped\n4. Send a fresh `idempotency_key` on every write, and reuse it when retrying the same write\n5. Pin `Square-Version` in each request. Use a page cursor within 5 minutes of receiving it\n\n## Questions\n\n### Which is better for AI agents, Agentzon or Square?\n\nSquare scores 69.2 (B) on agent readiness against Agentzon's 51.4 (D), and leads in 6 of 7 scored categories.\n\n### Do Agentzon and Square need an API key?\n\nAgentzon needs no key. Square takes an API key or an OAuth sign-in.\n\n### Can an agent call Agentzon and Square without installing anything?\n\nYes. Agentzon has a hosted endpoint at https://agentzon.co/api and Square at https://mcp.squareup.com/mcp.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/agentzon-vs-square.json, and with the fewest tokens: https://www.anchorterminal.com/compare/agentzon-vs-square.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"agentzon\", \"b\": \"square\"}`. From a terminal: `anchor compare agentzon square`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/agentzon.json and https://www.anchorterminal.com/api/v1/tools/square.json\n\n## Other comparisons with Agentzon or Square\n\n- [Adobe Commerce (Magento) vs Agentzon](https://www.anchorterminal.com/compare/adobe-commerce-vs-agentzon.md)\n- [Adobe Commerce (Magento) vs Square](https://www.anchorterminal.com/compare/adobe-commerce-vs-square.md)\n- [Agentzon vs BigCommerce API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-bigcommerce.md)\n- [Agentzon vs Commerce Layer API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-commerce-layer.md)\n- [Agentzon vs commercetools](https://www.anchorterminal.com/compare/agentzon-vs-commercetools.md)\n- [Agentzon vs Ecwid by Lightspeed](https://www.anchorterminal.com/compare/agentzon-vs-ecwid.md)\n- [Agentzon vs Elastic Path API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-elastic-path.md)\n- [Agentzon vs Medusa API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-medusa.md)\n- [Agentzon vs Saleor API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-saleor.md)\n- [Agentzon vs Shopify API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-shopify.md)\n- [Agentzon vs Shopware](https://www.anchorterminal.com/compare/agentzon-vs-shopware.md)\n- [Agentzon vs Snipcart API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-snipcart.md)\n- [Agentzon vs Spree Commerce](https://www.anchorterminal.com/compare/agentzon-vs-spree-commerce.md)\n- [Agentzon vs Swell](https://www.anchorterminal.com/compare/agentzon-vs-swell.md)\n- [Agentzon vs Vendure](https://www.anchorterminal.com/compare/agentzon-vs-vendure.md)\n- [Agentzon vs Wix Stores and eCommerce API](https://www.anchorterminal.com/compare/agentzon-vs-wix.md)\n- [Agentzon vs WooCommerce API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-woocommerce.md)\n- [BigCommerce API + MCP vs Square](https://www.anchorterminal.com/compare/bigcommerce-vs-square.md)\n- [Commerce Layer API + MCP vs Square](https://www.anchorterminal.com/compare/commerce-layer-vs-square.md)\n- [commercetools vs Square](https://www.anchorterminal.com/compare/commercetools-vs-square.md)\n- [Ecwid by Lightspeed vs Square](https://www.anchorterminal.com/compare/ecwid-vs-square.md)\n- [Elastic Path API + MCP vs Square](https://www.anchorterminal.com/compare/elastic-path-vs-square.md)\n- [Medusa API + MCP vs Square](https://www.anchorterminal.com/compare/medusa-vs-square.md)\n- [Saleor API + MCP vs Square](https://www.anchorterminal.com/compare/saleor-vs-square.md)\n- [Shopify API + MCP vs Square](https://www.anchorterminal.com/compare/shopify-vs-square.md)\n- [Shopware vs Square](https://www.anchorterminal.com/compare/shopware-vs-square.md)\n- [Snipcart API + MCP vs Square](https://www.anchorterminal.com/compare/snipcart-vs-square.md)\n- [Spree Commerce vs Square](https://www.anchorterminal.com/compare/spree-commerce-vs-square.md)\n- [Square vs Swell](https://www.anchorterminal.com/compare/square-vs-swell.md)\n- [Square vs Vendure](https://www.anchorterminal.com/compare/square-vs-vendure.md)\n- [Square vs Wix Stores and eCommerce API](https://www.anchorterminal.com/compare/square-vs-wix.md)\n- [Square vs WooCommerce API + MCP](https://www.anchorterminal.com/compare/square-vs-woocommerce.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "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": "Agentzon vs Square", "url": "" } ], "description": "Square scores 69.2 (B) to Agentzon's 51.4 (D) for commerce catalogues. 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