{ "data": { "a": { "slug": "adyen-mcp-server", "name": "Adyen MCP server", "vendor": "Adyen N.V.", "vendorUrl": "https://www.adyen.com", "kind": "mcp", "category": "payment-platforms", "summary": "Adyen's official MCP server lets an AI client call Adyen's Checkout, Management, Legal Entity Management and Balance Platform APIs with a merchant's API key. It runs locally over stdio through `npx @adyen/mcp` and is labelled alpha.", "url": "https://www.anchorterminal.com/tools/adyen-mcp-server", "markdownUrl": "https://www.anchorterminal.com/tools/adyen-mcp-server.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/adyen-mcp-server.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/adyen-mcp-server.json", "repo": "https://github.com/Adyen/adyen-mcp", "license": "MIT for the server. The Adyen APIs it calls are a closed service under a merchant agreement and the Adyen Terms and Conditions", "transports": [ "stdio" ], "packages": [ { "registry": "npm", "name": "@adyen/mcp" } ], "auth": "api-key", "authNotes": "The server needs an Adyen API key, read from `ADYEN_API_KEY` or the `--adyenApiKey` flag, and sends it to Adyen through `@adyen/api-library`. A person creates the key in the Customer Area under Developers, API credentials. Each credential has roles that set what it may do, and a company-level credential reaches every linked merchant account. Generating a new key leaves the old one active for 24 hours. The README lists 16 roles for the full tool set and advises a new credential used only for the server, with roles cut to the tools in use.", "pricing": "usage", "pricingNotes": "The server is free and MIT. Adyen charges for live payments, a fixed processing fee of $0.13 per transaction plus a fee set by the payment method, with no setup or monthly fee per the pricing page. Many methods are listed at interchange plus 0.60%. The pricing FAQ says a minimum invoice applies depending on industry or business model, through sales. A developer test account is free through a signup form, and Adyen says it does not guarantee approval as a customer (checked 2026-10-09).", "priceSummary": "$0.13 / tx", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the MCP docs page, the repository or the pricing page (checked 2026-10-09).", "endpoints": [] }, "toolCount": 38, "popularity": { "githubStars": 27, "npmWeekly": 168, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://docs.adyen.com/development-resources/mcp-server", "llmsTxt": "https://docs.adyen.com/llms.txt", "capabilities": [ "payments.checkout", "payments.card" ], "tags": [ "official", "local", "open-source", "mcp", "api-key", "sandbox", "alpha", "typescript", "llms-txt", "status-page" ], "lastRelease": "2026-08-24", "graded": true, "anchor": { "graded": true, "score": 60.3, "grade": "C", "agentReady": false, "rank": 471, "ranked": true, "rankOf": 842, "categoryRank": 5, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 56, "maintenance": 42, "payments": 35, "reliability": 65, "schema": 73, "security": 63, "transparency": 83 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "All 38 tools carry read-only, destructive and idempotent annotations, and `--tools` loads a subset under an API credential limited by roles. The README labels the server alpha, `refund_payment` and the other POST tools send no idempotency key, and failures come back as plain text without an error flag.", "bestFor": "An Adyen merchant's developer or operations staff who want an assistant to create payment links and sessions, look up terminals, webhooks, users and credentials, and change terminal settings, with a person watching writes.", "strengths": [ "All 38 tools carry `readOnlyHint`, `destructiveHint` and `idempotentHint`, and a test asserts every tool is classified (27 read-only, 11 writes, 6 marked destructive)", "`--tools` loads a named subset, and the README advises a dedicated API credential whose roles match only the tools in use", "The server defaults to Adyen's test environment, and live use needs both `--env=LIVE` and the account's live URL prefix", "MIT source with four test files, CodeQL and Renovate, published to npm from GitHub Actions with a provenance attestation", "Adyen's Customer Area keeps API logs of every request and response for 30 days, which cover calls the server makes" ], "weaknesses": [ "The README is headed alpha, the package is at 0.6.0, and the server reports itself as version 0.4.0", "`refund_payment`, `cancel_payment` and `create_payment_links` send no `idempotency-key` header, although Adyen's API accepts one on POST requests", "Tool failures return as text such as `Failed to refund payment. Error: ...` without `isError`, and no tool reads a payment's refunds", "The `refund_payment` description names `paymentPspReference` while the schema field is `pspReference`, and omits the required `reference`", "One release in the 90 days to 9 October 2026, and the docs page, last modified 11 June 2025, still passes the key on the command line" ], "agentNotes": [ "Set `ADYEN_API_KEY` in the environment and start with `npx -y @adyen/mcp --env=TEST`. The `--adyenApiKey` flag in the docs page puts the key in the process list", "Pass `--tools=` with only the tool names the task needs. The default loads all 38, and the terminal settings schema alone is about 29 KB of source", "Call `refund_payment` with `pspReference`, `currency`, `value`, `merchantAccount` and `reference`. The description's `paymentPspReference` is not the field name", "Treat a `Failed to ...` reply from a write tool as outcome unknown, not as failure. Do not repeat a refund without checking the Customer Area or the REFUND webhook", "Give amounts in minor units (1099 for 10.99 EUR). Live use needs `--env=LIVE --livePrefix=` with the prefix from the live Customer Area" ], "metrics": { "kind": "local", "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": 60.3 } ], "editorialScores": { "ergonomics": 56, "maintenance": 42, "payments": 35, "reliability": 65, "schema": 73, "security": 63, "transparency": 72 }, "provenanceScore": 93 }, "connect": { "install": "npx -y @adyen/mcp --env=TEST", "config": { "servers": { "adyen-mcp-server": { "args": [ "-y", "@adyen/mcp", "--env=TEST" ], "command": "npx", "env": { "ADYEN_API_KEY": "${ADYEN_API_KEY}" }, "type": "stdio" } } } }, "letme": { "capability": "https://letme.dev/payments.checkout", "tool": "https://letme.dev/adyen-mcp-server" }, "area": "payments", "unitPrices": [ { "item": "Adyen processing fee, added to each payment method's own fee", "unit": "tx", "usd": 0.13 } ], "provenance": { "legalEntity": "Adyen N.V.", "domain": "adyen.com", "domainRegistered": "2006-11-05", "endpointOnVendorDomain": true, "terms": "https://www.adyen.com/legal/adyen-terms-and-conditions", "privacy": "https://www.adyen.com/privacy-policy", "statusPage": "https://status.adyen.com", "changelog": "https://github.com/Adyen/adyen-mcp/releases", "securityTxt": "expired", "checked": "2026-10-09", "notes": [ "The Adyen Terms and Conditions (last update 1 November 2023) supplement the merchant agreement and name Adyen N.V., Dutch Chamber of Commerce number 34259528, Simon Carmiggeltstraat 6-50, Amsterdam. The server's source is MIT.", "The privacy statement (version of 4 August 2025) covers processing where Adyen is the data controller. Adyen publishes a sub-processor list last updated 1 July 2026 at https://www.adyen.com/legal/list-of-adyen-subprocessors.", "The server runs on the owner's machine and calls Adyen's API hosts through `@adyen/api-library`. There is no hosted MCP endpoint.", "www.adyen.com/.well-known/security.txt carries `Expires: 2025-12-31T22:59:00.000Z`, so it had expired on the day. It names responsibledisclosure@adyen.com and the responsible disclosure policy.", "status.adyen.com showed 99.999% uptime for the last 30 days. Its component list and incident history are drawn by script and were not read.", "RDAP for adyen.com gives a registration date of 2006-11-05." ], "score": 93 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/adyen-mcp-server.json", "live": { "slug": "adyen-mcp-server", "vendorStatus": { "page": "https://status.adyen.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:57:34.759368723Z" }, "updatedAt": "2026-10-09T07:57:34.759368723Z" } }, "answer": "Adyen MCP server scores 60.3 (C) on agent readiness against PayPal MCP server's 56.3 (C), and leads in 4 of 7 scored categories. PayPal MCP server leads on agent ergonomics, payments \u0026 pricing and maintenance \u0026 community.", "b": { "slug": "paypal-mcp-server", "name": "PayPal MCP server", "vendor": "PayPal", "vendorUrl": "https://www.paypal.com", "kind": "mcp", "category": "payment-platforms", "summary": "PayPal's official MCP server lets a merchant's AI client work with invoices, orders, refunds, disputes, subscriptions, catalogue products and transaction reports. It runs locally through `npx @paypal/mcp` or as a hosted server at mcp.paypal.com with a PayPal login.", "url": "https://www.anchorterminal.com/tools/paypal-mcp-server", "markdownUrl": "https://www.anchorterminal.com/tools/paypal-mcp-server.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/paypal-mcp-server.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/paypal-mcp-server.json", "repo": "https://github.com/paypal/paypal-mcp-server", "license": "Apache-2.0 for the local server and the agent toolkit. The hosted server is a closed service under the PayPal Developer Agreement", "transports": [ "stdio", "sse", "streamable-http" ], "remoteUrl": "https://mcp.paypal.com/mcp", "packages": [ { "registry": "npm", "name": "@paypal/mcp" }, { "registry": "npm", "name": "@paypal/agent-toolkit" }, { "registry": "pypi", "name": "paypal-agent-toolkit" } ], "auth": "mixed", "authNotes": "The remote server takes OAuth. The MCP client sends the user to a PayPal login and consent page, using authorisation code with PKCE S256, refresh tokens and dynamic client registration. It also accepts a Bearer header built from a REST app's client ID and secret. The local server takes only a PayPal REST access token in `PAYPAL_ACCESS_TOKEN` or `--access-token`, which the README says lasts 32,400 seconds. A person creates the app in the PayPal Developer Dashboard, and live use needs a PayPal Business account. No scope list for the MCP server was found.", "pricing": "usage", "pricingNotes": "No charge for the MCP server or the toolkit was found. PayPal's US merchant fees apply to payments made through it, 3.49% plus $0.49 for PayPal Checkout and invoices, 2.99% plus $0.49 for standard card processing, plus 1.5% on international transactions, with no monthly fee on most products (fees page updated 1 October 2026, https://www.paypal.com/us/business/paypal-business-fees). The sandbox is free with a developer account and no card, so an agent can start without a contract.", "priceSummary": "3.49% fee", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the MCP quickstart, the agent tools reference, the developer llms.txt indexes or either repository (checked 2026-10-08).", "endpoints": [] }, "toolCount": 28, "popularity": { "githubStars": null, "npmWeekly": 995, "pypiWeekly": 107, "asOf": "2026-10-08" }, "docsUrl": "https://developer.paypal.com/ai-tools/mcp-server", "llmsTxt": "https://developer.paypal.com/llms.txt", "registryName": "io.github.paypal/paypal-mcp-server", "capabilities": [ "payments.checkout", "accounting.invoices", "commerce.orders", "commerce.products" ], "tags": [ "official", "hosted", "local", "open-source", "mcp", "oauth", "sandbox", "llms-txt", "typescript", "python", "status-page", "bug-bounty" ], "lastRelease": "2026-09-01", "graded": true, "anchor": { "graded": true, "score": 56.3, "grade": "C", "agentReady": false, "rank": 571, "ranked": true, "rankOf": 842, "categoryRank": 6, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 66, "maintenance": 64, "payments": 40, "reliability": 52, "schema": 70, "security": 48, "transparency": 78 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": -2, "negativeNotes": [ "8 October 2026. The MCP quickstart (last updated 30 June 2026) gives `https://mcp.paypal.com/http` and `https://mcp.sandbox.paypal.com/http` as the streamable HTTP endpoints. Both returned 404 to an initialise request on 8 October 2026, while `/mcp` on each host returned the OAuth challenge. A documented endpoint that doesn't answer, minus 2 (https://developer.paypal.com/ai-tools/mcp-server)." ], "verdict": "The hosted server uses OAuth with PKCE and dynamic client registration, and the local package defaults to the sandbox. No tool carries a read-only or destructive annotation, no confirmation step for refunds or captures was found, and the documented `/http` streamable HTTP path returned 404 on 8 October 2026 while `/mcp` answered.", "bestFor": "A merchant already on PayPal who wants an assistant to draft and send invoices, look up orders and transactions, and manage subscriptions and disputes.", "strengths": [ "Hosted server at mcp.paypal.com publishes OAuth metadata with authorisation code, PKCE S256, refresh tokens, revocation and dynamic client registration", "The local package starts in the sandbox unless `PAYPAL_ENVIRONMENT` is `PRODUCTION`, and `--tools=` limits which tools load", "Every tool input is a typed schema with enums and range limits, built from zod definitions in the Apache-2.0 toolkit", "US fees are public without a login, and sandbox testing needs no card or monthly fee", "Listed in the official MCP registry as `io.github.paypal/paypal-mcp-server`, and the toolkit had three releases between 10 August and 1 September 2026" ], "weaknesses": [ "The quickstart gives `/http` for streamable HTTP. On 8 October 2026 it returned 404 on both hosts, and `/mcp` returned the OAuth challenge", "Tools are registered without `readOnlyHint` or `destructiveHint`, and no approval step for `create_refund`, `pay_order` or `accept_dispute_claim` was found", "`@paypal/mcp` 1.8.1 dates from 28 October 2025 and selects 28 tool keys, while the toolkit it loads defines 48 tools", "PayPal states that it doesn't publish rate limits, and no SLA was found. The Developer Agreement gives no uptime guarantee for the sandbox", "Neither repository has tests in CI, and the toolkit changelog stops at 1.3.5 from April 2025 although 1.11.0 is current" ], "agentNotes": [ "Connect a remote client to `https://mcp.paypal.com/mcp` or `/sse`. The documented `/http` path returned 404 on 8 October 2026", "Set `PAYPAL_ENVIRONMENT=PRODUCTION` for live calls. Any other value, including the registry's `LIVE`, runs against the sandbox", "Refresh `PAYPAL_ACCESS_TOKEN` before it expires. The README gives `expires_in` 32400 seconds, and the local server takes no client ID or secret", "Pass `--tools=` with only the keys the task needs, such as `invoices.list,orders.get`. `--tools=all` loads 28 keys including refunds and captures", "Ask the user before `create_refund`, `pay_order`, `cancel_subscription` or `accept_dispute_claim`. The server applies them without a confirmation step" ], "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": 56.3 } ], "editorialScores": { "ergonomics": 66, "maintenance": 64, "payments": 40, "reliability": 52, "schema": 70, "security": 48, "transparency": 58 }, "provenanceScore": 98 }, "connect": { "install": "npx -y @paypal/mcp --tools=all", "config": { "mcpServers": { "paypal": { "args": [ "-y", "@paypal/mcp", "--tools=all" ], "command": "npx", "env": { "PAYPAL_ACCESS_TOKEN": "YOUR_PAYPAL_ACCESS_TOKEN", "PAYPAL_ENVIRONMENT": "SANDBOX" } } } } }, "letme": { "capability": "https://letme.dev/payments.checkout", "tool": "https://letme.dev/paypal-mcp-server" }, "area": "payments", "unitPrices": [ { "item": "PayPal Checkout, US domestic", "unit": "pct", "usd": 3.49, "note": "plus $0.49 per transaction" }, { "item": "PayPal Checkout fixed fee, USD", "unit": "tx", "usd": 0.49 }, { "item": "Standard card processing, US domestic", "unit": "pct", "usd": 2.99, "note": "plus $0.49 per transaction" }, { "item": "International commercial transaction surcharge", "unit": "pct", "usd": 1.5 }, { "item": "Standard dispute fee", "unit": "tx", "usd": 15 } ], "provenance": { "legalEntity": "PayPal, Inc.", "domain": "paypal.com", "domainRegistered": "1999-07-15", "endpointOnVendorDomain": true, "terms": "https://www.paypal.com/us/legalhub/paypal/xdeveloper-full", "privacy": "https://www.paypal.com/us/legalhub/paypal/privacy-full", "statusPage": "https://www.paypal-status.com", "changelog": "https://github.com/paypal/agent-toolkit/blob/main/typescript/CHANGELOG.md", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "The PayPal Developer Agreement, last updated 18 November 2024, governs the Developer's Tools and API calls and takes precedence over the User Agreement for them. US users contract with PayPal, Inc. and some other regions with PayPal Pte. Ltd.", "The US User Agreement (last updated 14 September 2026) and Privacy Statement (last updated 28 September 2026) name PayPal, Inc.", "www.paypal.com/.well-known/security.txt redirects to www.paypalobjects.com and names the HackerOne programme. It has no Expires field.", "The toolkit changelog on GitHub stops at 1.3.5 from 23 April 2025. Later releases are visible only as tags and npm versions.", "RDAP for paypal.com gives a registration date of 1999-07-15. The status page is on paypal-status.com, a separate domain." ], "score": 98 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/paypal-mcp-server.json", "live": { "slug": "paypal-mcp-server", "probe": { "target": "https://mcp.paypal.com/mcp", "method": "mcp-initialize", "lastAt": "2026-10-09T11:46:36.683353195Z", "lastOk": true, "lastStatus": 401, "lastMs": 45, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 59, "p95ms24h": 138, "samples24h": 44, "samples30d": 44, "days": [ { "date": "2026-10-09", "probes": 44, "ok": 44 } ] }, "vendorStatus": { "page": "https://www.paypal-status.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:58:24.882591825Z" }, "updatedAt": "2026-10-09T11:46:36.683353195Z" } }, "facts": [ { "a": "MCP server", "b": "MCP server", "name": "Kind" }, { "a": "Adyen N.V.", "b": "PayPal", "name": "Vendor" }, { "a": "no (local only)", "b": "https://mcp.paypal.com/mcp", "name": "Hosted endpoint" }, { "a": "stdio", "b": "stdio, SSE (legacy), Streamable HTTP", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "not published", "b": "$0.49 per transaction", "name": "Price for payments checkout" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT for the server. The Adyen APIs it calls are a closed service under a merchant agreement and the Adyen Terms and Conditions", "b": "Apache-2.0 for the local server and the agent toolkit. The hosted server is a closed service under the PayPal Developer Agreement", "name": "Licence" }, { "a": "38", "b": "28", "name": "Tools exposed" }, { "a": "yes", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "not listed", "b": "io.github.paypal/paypal-mcp-server", "name": "MCP registry" }, { "a": "2026-08-24", "b": "2026-09-01", "name": "Last release" }, { "a": "2023-11-01", "b": "2024-11-18", "name": "Terms last updated" }, { "a": "2025-08-04", "b": "2026-09-28", "name": "Privacy policy last updated" }, { "a": "yes", "b": "yes", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "27 stars, 168 npm/wk", "b": "995 npm/wk, 107 PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "Adyen MCP server scores 60.3 (C) on agent readiness against PayPal MCP server's 56.3 (C), and leads in 4 of 7 scored categories. PayPal MCP server leads on agent ergonomics, payments \u0026 pricing and maintenance \u0026 community.", "question": "Which is better for AI agents, Adyen MCP server or PayPal MCP server?" }, { "answer": "Adyen MCP server needs an API key. PayPal MCP server takes an API key or an OAuth sign-in.", "question": "Do Adyen MCP server and PayPal MCP server need an API key?" }, { "answer": "Adyen MCP server runs on your own machine, with no hosted endpoint listed. PayPal MCP server has a hosted endpoint at https://mcp.paypal.com/mcp.", "question": "Can an agent call Adyen MCP server and PayPal MCP server without installing anything?" }, { "answer": "Yes. Adyen MCP server is open source (MIT for the server. The Adyen APIs it calls are a closed service under a merchant agreement and the Adyen Terms and Conditions). PayPal MCP server is open source (Apache-2.0 for the local server and the agent toolkit. The hosted server is a closed service under the PayPal Developer Agreement).", "question": "Are Adyen MCP server and PayPal MCP server open source?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 65 against 52", "Security \u0026 auth, 63 against 48", "Transparency \u0026 trust, 83 against 78" ], "also": null, "goodFor": "An Adyen merchant's developer or operations staff who want an assistant to create payment links and sessions, look up terminals, webhooks, users and credentials, and change terminal settings, with a person watching writes.", "slug": "adyen-mcp-server", "watchFor": "The README is headed alpha, the package is at 0.6.0, and the server reports itself as version 0.4.0" }, { "aheadOn": [ "Agent ergonomics, 66 against 56", "Payments \u0026 pricing, 40 against 35", "Maintenance \u0026 community, 64 against 42" ], "also": [ "A hosted endpoint, with nothing to install" ], "goodFor": "A merchant already on PayPal who wants an assistant to draft and send invoices, look up orders and transactions, and manage subscriptions and disputes.", "slug": "paypal-mcp-server", "watchFor": "The quickstart gives `/http` for streamable HTTP. On 8 October 2026 it returned 404 on both hosts, and `/mcp` returned the OAuth challenge" } ], "job": { "capability": "payments.checkout", "name": "Payments checkout" }, "others": [ { "json": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-crossmint.json", "title": "Adyen MCP server vs Crossmint API + Docs MCP", "url": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-crossmint" }, { "json": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-nevermined.json", "title": "Adyen MCP server vs Nevermined API + MCP", "url": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-nevermined" }, { "json": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-skyfire.json", "title": "Adyen MCP server vs Skyfire API + MCP", "url": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-skyfire" }, { "json": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-stripe-mcp.json", "title": "Adyen MCP server vs Stripe API + MCP", "url": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-stripe-mcp" }, { "json": "https://www.anchorterminal.com/compare/crossmint-vs-paypal-mcp-server.json", "title": "Crossmint API + Docs MCP vs PayPal MCP server", "url": "https://www.anchorterminal.com/compare/crossmint-vs-paypal-mcp-server" }, { "json": "https://www.anchorterminal.com/compare/nevermined-vs-paypal-mcp-server.json", "title": "Nevermined API + MCP vs PayPal MCP server", "url": "https://www.anchorterminal.com/compare/nevermined-vs-paypal-mcp-server" }, { "json": "https://www.anchorterminal.com/compare/paypal-mcp-server-vs-skyfire.json", "title": "PayPal MCP server vs Skyfire API + MCP", "url": "https://www.anchorterminal.com/compare/paypal-mcp-server-vs-skyfire" }, { "json": "https://www.anchorterminal.com/compare/paypal-mcp-server-vs-stripe-mcp.json", "title": "PayPal MCP server vs Stripe API + MCP", "url": "https://www.anchorterminal.com/compare/paypal-mcp-server-vs-stripe-mcp" }, { "json": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-payman.json", "title": "Adyen MCP server vs Payman Genie MCP", "url": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-payman" } ], "scores": [ { "adyen-mcp-server": 65, "by": 13, "edge": "adyen-mcp-server", "key": "reliability", "name": "Reliability", "paypal-mcp-server": 52, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "adyen-mcp-server": 73, "by": 3, "edge": "adyen-mcp-server", "key": "schema", "name": "Schema \u0026 documentation", "paypal-mcp-server": 70, "weight": 13 }, { "adyen-mcp-server": 56, "by": 10, "edge": "paypal-mcp-server", "key": "ergonomics", "name": "Agent ergonomics", "paypal-mcp-server": 66, "weight": 13 }, { "adyen-mcp-server": 63, "by": 15, "edge": "adyen-mcp-server", "key": "security", "name": "Security \u0026 auth", "paypal-mcp-server": 48, "weight": 14 }, { "adyen-mcp-server": 35, "by": 5, "edge": "paypal-mcp-server", "key": "payments", "name": "Payments \u0026 pricing", "paypal-mcp-server": 40, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "adyen-mcp-server": 42, "by": 22, "edge": "paypal-mcp-server", "key": "maintenance", "name": "Maintenance \u0026 community", "paypal-mcp-server": 64, "weight": 7 }, { "adyen-mcp-server": 83, "by": 5, "edge": "adyen-mcp-server", "key": "transparency", "name": "Transparency \u0026 trust", "paypal-mcp-server": 78, "weight": 7 } ], "summary": "Adyen MCP server scores 60.3 (C) on agent readiness against PayPal MCP server's 56.3 (C), and leads in 4 of 7 scored categories. PayPal MCP server leads on agent ergonomics, payments \u0026 pricing and maintenance \u0026 community. Both do payments checkout.", "verdicts": { "adyen-mcp-server": "All 38 tools carry read-only, destructive and idempotent annotations, and `--tools` loads a subset under an API credential limited by roles. The README labels the server alpha, `refund_payment` and the other POST tools send no idempotency key, and failures come back as plain text without an error flag.", "paypal-mcp-server": "The hosted server uses OAuth with PKCE and dynamic client registration, and the local package defaults to the sandbox. No tool carries a read-only or destructive annotation, no confirmation step for refunds or captures was found, and the documented `/http` streamable HTTP path returned 404 on 8 October 2026 while `/mcp` answered." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-paypal-mcp-server", "json": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-paypal-mcp-server.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-paypal-mcp-server.md", "slim": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-paypal-mcp-server.min.md" }, "markdown": "Adyen MCP server scores 60.3 (C) on agent readiness against PayPal MCP server's 56.3 (C), and leads in 4 of 7 scored categories. PayPal MCP server leads on agent ergonomics, payments \u0026 pricing and maintenance \u0026 community. Both do payments checkout.\n\n- Adyen MCP server: grade C, 60.3/100, rank #471 of 842. Markdown https://www.anchorterminal.com/tools/adyen-mcp-server.md · JSON https://www.anchorterminal.com/api/v1/tools/adyen-mcp-server.json\n- PayPal MCP server: grade C, 56.3/100, rank #571 of 842. Markdown https://www.anchorterminal.com/tools/paypal-mcp-server.md · JSON https://www.anchorterminal.com/api/v1/tools/paypal-mcp-server.json\n\n## Which one, for what\n\n### Adyen MCP server (C)\n\nGood for: An Adyen merchant's developer or operations staff who want an assistant to create payment links and sessions, look up terminals, webhooks, users and credentials, and change terminal settings, with a person watching writes.\n\nAhead on:\n- Reliability, 65 against 52\n- Security \u0026 auth, 63 against 48\n- Transparency \u0026 trust, 83 against 78\n\nWatch for: The README is headed alpha, the package is at 0.6.0, and the server reports itself as version 0.4.0\n\n### PayPal MCP server (C)\n\nGood for: A merchant already on PayPal who wants an assistant to draft and send invoices, look up orders and transactions, and manage subscriptions and disputes.\n\nAhead on:\n- Agent ergonomics, 66 against 56\n- Payments \u0026 pricing, 40 against 35\n- Maintenance \u0026 community, 64 against 42\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: The quickstart gives `/http` for streamable HTTP. On 8 October 2026 it returned 404 on both hosts, and `/mcp` returned the OAuth challenge\n\n\n## Score by category\n\n| Category | Weight | Adyen MCP server | PayPal MCP server | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 65 | 52 | Adyen MCP server +13 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 73 | 70 | Adyen MCP server +3 |\n| Agent ergonomics | 13% (16.2 this run) | 56 | 66 | PayPal MCP server +10 |\n| Security \u0026 auth | 14% (17.5 this run) | 63 | 48 | Adyen MCP server +15 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 40 | PayPal MCP server +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 42 | 64 | PayPal MCP server +22 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 83 | 78 | Adyen MCP server +5 |\n| Negative events | ≤15 | 0 | -2 | |\n| **Total** | | **60.3 · C** | **56.3 · C** | |\n\n## Facts side by side\n\n| Fact | Adyen MCP server | PayPal MCP server |\n| --- | --- | --- |\n| Kind | MCP server | MCP server |\n| Vendor | Adyen N.V. | PayPal |\n| Hosted endpoint | no (local only) | `https://mcp.paypal.com/mcp` |\n| Transports | stdio | stdio, SSE (legacy), Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Pay per use |\n| Price for payments checkout | not published | $0.49 per transaction |\n| x402 | no | no |\n| Licence | MIT for the server. The Adyen APIs it calls are a closed service under a merchant agreement and the Adyen Terms and Conditions | Apache-2.0 for the local server and the agent toolkit. The hosted server is a closed service under the PayPal Developer Agreement |\n| Tools exposed | 38 | 28 |\n| Read-only variant documented | yes | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `io.github.paypal/paypal-mcp-server` |\n| Last release | 2026-08-24 | 2026-09-01 |\n| Terms last updated | 2023-11-01 | 2024-11-18 |\n| Privacy policy last updated | 2025-08-04 | 2026-09-28 |\n| Customer content may train models | yes | yes |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 27 stars, 168 npm/wk | 995 npm/wk, 107 PyPI/wk |\n\n## Verdicts\n\n**Adyen MCP server.** All 38 tools carry read-only, destructive and idempotent annotations, and `--tools` loads a subset under an API credential limited by roles. The README labels the server alpha, `refund_payment` and the other POST tools send no idempotency key, and failures come back as plain text without an error flag.\n\n**PayPal MCP server.** The hosted server uses OAuth with PKCE and dynamic client registration, and the local package defaults to the sandbox. No tool carries a read-only or destructive annotation, no confirmation step for refunds or captures was found, and the documented `/http` streamable HTTP path returned 404 on 8 October 2026 while `/mcp` answered.\n\n## Before you call either\n\n### Adyen MCP server\n\n1. Set `ADYEN_API_KEY` in the environment and start with `npx -y @adyen/mcp --env=TEST`. The `--adyenApiKey` flag in the docs page puts the key in the process list\n2. Pass `--tools=` with only the tool names the task needs. The default loads all 38, and the terminal settings schema alone is about 29 KB of source\n3. Call `refund_payment` with `pspReference`, `currency`, `value`, `merchantAccount` and `reference`. The description's `paymentPspReference` is not the field name\n4. Treat a `Failed to ...` reply from a write tool as outcome unknown, not as failure. Do not repeat a refund without checking the Customer Area or the REFUND webhook\n5. Give amounts in minor units (1099 for 10.99 EUR). Live use needs `--env=LIVE --livePrefix=` with the prefix from the live Customer Area\n\n### PayPal MCP server\n\n1. Connect a remote client to `https://mcp.paypal.com/mcp` or `/sse`. The documented `/http` path returned 404 on 8 October 2026\n2. Set `PAYPAL_ENVIRONMENT=PRODUCTION` for live calls. Any other value, including the registry's `LIVE`, runs against the sandbox\n3. Refresh `PAYPAL_ACCESS_TOKEN` before it expires. The README gives `expires_in` 32400 seconds, and the local server takes no client ID or secret\n4. Pass `--tools=` with only the keys the task needs, such as `invoices.list,orders.get`. `--tools=all` loads 28 keys including refunds and captures\n5. Ask the user before `create_refund`, `pay_order`, `cancel_subscription` or `accept_dispute_claim`. The server applies them without a confirmation step\n\n## Questions\n\n### Which is better for AI agents, Adyen MCP server or PayPal MCP server?\n\nAdyen MCP server scores 60.3 (C) on agent readiness against PayPal MCP server's 56.3 (C), and leads in 4 of 7 scored categories. PayPal MCP server leads on agent ergonomics, payments \u0026 pricing and maintenance \u0026 community.\n\n### Do Adyen MCP server and PayPal MCP server need an API key?\n\nAdyen MCP server needs an API key. PayPal MCP server takes an API key or an OAuth sign-in.\n\n### Can an agent call Adyen MCP server and PayPal MCP server without installing anything?\n\nAdyen MCP server runs on your own machine, with no hosted endpoint listed. PayPal MCP server has a hosted endpoint at https://mcp.paypal.com/mcp.\n\n### Are Adyen MCP server and PayPal MCP server open source?\n\nYes. Adyen MCP server is open source (MIT for the server. The Adyen APIs it calls are a closed service under a merchant agreement and the Adyen Terms and Conditions). PayPal MCP server is open source (Apache-2.0 for the local server and the agent toolkit. The hosted server is a closed service under the PayPal Developer Agreement).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/adyen-mcp-server-vs-paypal-mcp-server.json, and with the fewest tokens: https://www.anchorterminal.com/compare/adyen-mcp-server-vs-paypal-mcp-server.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"adyen-mcp-server\", \"b\": \"paypal-mcp-server\"}`. From a terminal: `anchor compare adyen-mcp-server paypal-mcp-server`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/adyen-mcp-server.json and https://www.anchorterminal.com/api/v1/tools/paypal-mcp-server.json\n\n## Other comparisons with Adyen MCP server or PayPal MCP server\n\n- [Adyen MCP server vs Crossmint API + Docs MCP](https://www.anchorterminal.com/compare/adyen-mcp-server-vs-crossmint.md)\n- [Adyen MCP server vs Nevermined API + MCP](https://www.anchorterminal.com/compare/adyen-mcp-server-vs-nevermined.md)\n- [Adyen MCP server vs Skyfire API + MCP](https://www.anchorterminal.com/compare/adyen-mcp-server-vs-skyfire.md)\n- [Adyen MCP server vs Stripe API + MCP](https://www.anchorterminal.com/compare/adyen-mcp-server-vs-stripe-mcp.md)\n- [Crossmint API + Docs MCP vs PayPal MCP server](https://www.anchorterminal.com/compare/crossmint-vs-paypal-mcp-server.md)\n- [Nevermined API + MCP vs PayPal MCP server](https://www.anchorterminal.com/compare/nevermined-vs-paypal-mcp-server.md)\n- [PayPal MCP server vs Skyfire API + MCP](https://www.anchorterminal.com/compare/paypal-mcp-server-vs-skyfire.md)\n- [PayPal MCP server vs Stripe API + MCP](https://www.anchorterminal.com/compare/paypal-mcp-server-vs-stripe-mcp.md)\n- [Adyen MCP server vs Payman Genie MCP](https://www.anchorterminal.com/compare/adyen-mcp-server-vs-payman.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-09", "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": "Adyen MCP server vs PayPal MCP server", "url": "" } ], "description": "Adyen MCP server scores 60.3 (C) on agent readiness against PayPal MCP server's 56.3 (C), and leads in 4 of 7 scored categories. PayPal MCP server leads on agent ergonomics, payments \u0026 pricing and maintenance \u0026 community. Both do payments checkout. Category scores, facts…", "facts": [ "Adyen MCP server C 60.3", "PayPal MCP server C 56.3", "scores" ], "h1": "Adyen MCP server vs PayPal MCP server", "image": "https://www.anchorterminal.com/assets/og/compare-adyen-mcp-server-vs-paypal-mcp-server.png", "path": "/compare/adyen-mcp-server-vs-paypal-mcp-server", "published": "2026-10-01", "section": "tools", "title": "Adyen MCP server vs PayPal MCP server for AI agents, C 60.3 vs C 56.3", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/adyen-mcp-server-vs-paypal-mcp-server" }, "tokens": { "markdown": 2450, "slim": 730 }, "version": 1 }