{ "data": { "a": { "slug": "crossmint", "name": "Crossmint API + Docs MCP", "vendor": "Crossmint", "vendorUrl": "https://www.crossmint.com", "kind": "http-api", "category": "payment-platforms", "summary": "Wallet, checkout and stablecoin infrastructure with an agent product line.", "url": "https://www.anchorterminal.com/tools/crossmint", "markdownUrl": "https://www.anchorterminal.com/tools/crossmint.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/crossmint.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/crossmint.json", "repo": "https://github.com/Crossmint/crossmint-sdk", "license": "Apache-2.0", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://www.crossmint.com/api", "packages": [ { "registry": "npm", "name": "@crossmint/wallets-sdk" }, { "registry": "npm", "name": "@crossmint/client-sdk-react-ui" } ], "auth": "api-key", "authNotes": "Server-side and client-side API keys in the X-API-KEY header, each with scopes; client keys can require JWTs from your own auth provider. Staging keys work on testnets at staging.crossmint.com and production keys on mainnets. The docs MCP server needs no auth.", "pricing": "freemium", "pricingNotes": "Wallets free for 1,000 monthly active wallets and up to 2,000 transactions, then from $0.02 per monthly active wallet with volume discounts. Tokenisation from $0.01 an action. Onramp, offramp, checkout and stablecoin orchestration are per-transaction fees with volume discounts, not published. Agent Cards and Agent Checkouts pricing isn't published. Enterprise (premium SLAs and rate limits) is through sales (https://www.crossmint.com/pricing).", "priceSummary": "$0.02 / mo", "where": "hosted", "x402": { "level": "partial", "evidence": "Agent Wallets pay x402 and MPP endpoints, and an n8n node puts an x402 paywall in front of workflows. The Crossmint API itself isn't paid over x402 (https://docs.crossmint.com/agents/payment-flows/x402).", "endpoints": [] }, "toolCount": 1, "popularity": { "githubStars": 52, "npmWeekly": 39991, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://docs.crossmint.com/agents/overview", "llmsTxt": "https://docs.crossmint.com/llms.txt", "openapi": "https://raw.githubusercontent.com/Crossmint/crossmint-sdk/main/packages/wallets/src/openapi.json", "capabilities": [ "payments.card", "payments.x402", "payments.stablecoin", "payments.checkout", "payments.payouts" ], "tags": [ "hosted", "freemium", "mcp", "llms-txt", "stablecoin", "x402", "wallet", "typescript", "webhooks" ], "lastRelease": "2026-10-01", "graded": true, "anchor": { "graded": true, "score": 67.1, "grade": "B", "agentReady": false, "rank": 241, "ranked": true, "rankOf": 842, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 71, "maintenance": 85, "payments": 50, "reliability": 53, "schema": 71, "security": 73, "transparency": 80 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Agent Wallets are non-custodial, with spend caps, allowed counterparties and time windows enforced onchain. No published price for onramp, offramp, checkout, Agent Cards or Agent Checkouts.", "bestFor": "Products that let agents spend, especially where a user wants a capped card or a capped stablecoin wallet for an agent, or an agent that buys from ordinary merchant sites.", "strengths": [ "Agent Wallets are non-custodial, with spend caps, allowed counterparties and time windows enforced onchain", "Scoped server and client API keys, with each operation's required scope named in the spec", "Idempotency keys on transaction and transfer creation, and cursor or page pagination with date filters", "Regulatory footprint stated in public, a Spanish CNMV crypto-asset service provider authorisation plus FinCEN and FINTRAC registrations", "16 SDK release commits since 1 July, the latest on 1 October 2026" ], "weaknesses": [ "No published price for onramp, offramp, checkout, Agent Cards or Agent Checkouts", "Agent Checkouts runs in production only, so the first test spends real money", "Status history is on a JavaScript-only Datadog page, and the docs changelog stops at 11 February 2026", "No MCP server for wallets or payments, only a one-tool docs search", "SDKs in TypeScript only" ], "agentNotes": [ "Send an `x-idempotency-key` on every transaction or transfer create so a retry can't pay twice", "Use staging keys against testnets; production keys work on mainnets only, and Agent Checkouts has no staging at all", "On 429, wait and retry. No Retry-After header is documented, and writes are capped at 120 a minute per project", "Use Agent Wallets for x402 and MPP endpoints and Agent Cards for card merchants; they aren't interchangeable", "Append `.md` to any docs URL for a Markdown copy" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 67.1 } ], "editorialScores": { "ergonomics": 71, "maintenance": 85, "payments": 50, "reliability": 53, "schema": 71, "security": 73, "transparency": 65 }, "provenanceScore": 95 }, "connect": { "http": "curl -X POST https://staging.crossmint.com/api/2025-06-09/wallets -H \"X-API-KEY: $CROSSMINT_API_KEY\" \\\n -H \"Content-Type: application/json\" -d '{\"chainType\":\"evm\"}'", "claudeCode": "claude mcp add --transport http crossmint-docs https://docs.crossmint.com/mcp", "config": { "mcpServers": { "crossmint-docs": { "url": "https://docs.crossmint.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/payments.card", "tool": "https://letme.dev/crossmint" }, "area": "payments", "unitPrices": [ { "item": "Wallet over free tier", "unit": "month", "usd": 0.02, "note": "per monthly active wallet above 1,000, volume discounts" }, { "item": "Tokenisation action", "unit": "call", "usd": 0.01, "note": "starting price, volume discounts" } ], "provenance": { "legalEntity": "Crossmint, Inc.", "domain": "crossmint.com", "domainRegistered": "2007-02-23", "domainNote": "crossmint.com was registered in 2007, long before Crossmint was founded. Terms also name Crossmint Europe, S.L. and Crossmint Horizon, Inc. The security.txt lists a contact and policy but no Expires field.", "endpointOnVendorDomain": true, "terms": "https://www.crossmint.com/legal/terms-of-service", "privacy": "https://www.crossmint.com/legal/privacy-policy", "statusPage": "https://status.crossmint.com", "changelog": "https://docs.crossmint.com/changelog", "securityTxt": "valid", "checked": "2026-09-30", "score": 95 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/crossmint.json", "live": { "slug": "crossmint", "probe": { "target": "https://www.crossmint.com/api", "method": "get", "lastAt": "2026-10-09T11:46:26.158711948Z", "lastOk": true, "lastStatus": 404, "lastMs": 189, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 189, "p95ms24h": 458, "samples24h": 259, "samples30d": 2311, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 125, "ok": 125 } ] }, "vendorStatus": { "page": "https://status.crossmint.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:57:46.592429784Z" }, "versions": [ { "registry": "npm", "name": "@crossmint/client-sdk-react-ui", "version": "4.9.1", "seenAt": "2026-10-08T16:07:33.111745668Z" }, { "registry": "npm", "name": "@crossmint/wallets-sdk", "version": "1.20.0", "seenAt": "2026-10-08T16:07:29.616686357Z" } ], "githubStars": 52, "npmWeekly": 55214, "securityTxt": { "url": "https://crossmint.com/.well-known/security.txt", "state": "valid", "checkedAt": "2026-10-08T15:38:59.926187177Z" }, "llmsTxt": { "url": "https://docs.crossmint.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-08T14:00:17.654675664Z" }, "domain": { "domain": "crossmint.com", "registered": "2007-02-23", "source": "https://rdap.verisign.com/com/v1/domain/crossmint.com", "checkedAt": "2026-10-04T13:07:50.738904164Z" }, "pages": [ { "url": "https://docs.crossmint.com/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-08T18:18:36.135539064Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "9586f8e8a1d3" }, { "url": "https://www.crossmint.com/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-08T18:27:22.44754973Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "dffec4faf7a5" }, { "url": "https://www.crossmint.com/legal/privacy-policy", "kind": "privacy", "status": 304, "checkedAt": "2026-10-08T18:27:17.832026147Z", "changedAt": "2026-10-02T15:26:08.112583044Z", "fingerprint": "73ab07afabce" }, { "url": "https://www.crossmint.com/legal/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-10-08T18:27:20.000699241Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "869ee89b903b" } ], "updatedAt": "2026-10-09T11:46:26.158711948Z" } }, "answer": "Crossmint API + Docs MCP scores 67.1 (B) on agent readiness against PayPal MCP server's 56.3 (C), and leads in every scored category.", "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": "HTTP API", "b": "MCP server", "name": "Kind" }, { "a": "Crossmint", "b": "PayPal", "name": "Vendor" }, { "a": "https://www.crossmint.com/api", "b": "https://mcp.paypal.com/mcp", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "stdio, SSE (legacy), Streamable HTTP", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "not published", "b": "$0.49 per transaction", "name": "Price for payments checkout" }, { "a": "payer tooling only", "b": "no", "name": "x402" }, { "a": "Apache-2.0", "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": "1", "b": "28", "name": "Tools exposed" }, { "a": "no", "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": "2026-10-01", "b": "2026-09-01", "name": "Last release" }, { "a": "2026-07-01", "b": "2024-11-18", "name": "Terms last updated" }, { "a": "2026-09-21", "b": "2026-09-28", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes", "name": "Customer content may train models" }, { "a": "yes", "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": "yes", "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": "52 stars, 40k npm/wk", "b": "995 npm/wk, 107 PyPI/wk", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Crossmint API + Docs MCP scores 67.1 (B) on agent readiness against PayPal MCP server's 56.3 (C), and leads in every scored category.", "question": "Which is better for AI agents, Crossmint API + Docs MCP or PayPal MCP server?" }, { "answer": "Crossmint API + Docs MCP needs an API key. PayPal MCP server takes an API key or an OAuth sign-in.", "question": "Do Crossmint API + Docs MCP and PayPal MCP server need an API key?" }, { "answer": "Yes. Crossmint API + Docs MCP has a hosted endpoint at https://www.crossmint.com/api and PayPal MCP server at https://mcp.paypal.com/mcp.", "question": "Can an agent call Crossmint API + Docs MCP and PayPal MCP server without installing anything?" }, { "answer": "No open-source release is listed for Crossmint API + Docs MCP. 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 Crossmint API + Docs MCP and PayPal MCP server open source?" } ], "goodFor": [ { "aheadOn": [ "Agent ergonomics, 71 against 66", "Security \u0026 auth, 73 against 48", "Payments \u0026 pricing, 50 against 40", "Maintenance \u0026 community, 85 against 64" ], "also": null, "goodFor": "Products that let agents spend, especially where a user wants a capped card or a capped stablecoin wallet for an agent, or an agent that buys from ordinary merchant sites.", "slug": "crossmint", "watchFor": "No published price for onramp, offramp, checkout, Agent Cards or Agent Checkouts" }, { "aheadOn": null, "also": [ "Runs on your own machine", "Open source" ], "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-paypal-mcp-server.json", "title": "Adyen MCP server vs PayPal MCP server", "url": "https://www.anchorterminal.com/compare/adyen-mcp-server-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/crossmint-vs-nevermined.json", "title": "Crossmint API + Docs MCP vs Nevermined API + MCP", "url": "https://www.anchorterminal.com/compare/crossmint-vs-nevermined" }, { "json": "https://www.anchorterminal.com/compare/crossmint-vs-payman.json", "title": "Crossmint API + Docs MCP vs Payman Genie MCP", "url": "https://www.anchorterminal.com/compare/crossmint-vs-payman" }, { "json": "https://www.anchorterminal.com/compare/crossmint-vs-skyfire.json", "title": "Crossmint API + Docs MCP vs Skyfire API + MCP", "url": "https://www.anchorterminal.com/compare/crossmint-vs-skyfire" }, { "json": "https://www.anchorterminal.com/compare/crossmint-vs-stripe-mcp.json", "title": "Crossmint API + Docs MCP vs Stripe API + MCP", "url": "https://www.anchorterminal.com/compare/crossmint-vs-stripe-mcp" }, { "json": "https://www.anchorterminal.com/compare/crossmint-vs-tempo.json", "title": "Crossmint API + Docs MCP vs Tempo", "url": "https://www.anchorterminal.com/compare/crossmint-vs-tempo" } ], "scores": [ { "by": 1, "crossmint": 53, "edge": "crossmint", "key": "reliability", "name": "Reliability", "paypal-mcp-server": 52, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 1, "crossmint": 71, "edge": "crossmint", "key": "schema", "name": "Schema \u0026 documentation", "paypal-mcp-server": 70, "weight": 13 }, { "by": 5, "crossmint": 71, "edge": "crossmint", "key": "ergonomics", "name": "Agent ergonomics", "paypal-mcp-server": 66, "weight": 13 }, { "by": 25, "crossmint": 73, "edge": "crossmint", "key": "security", "name": "Security \u0026 auth", "paypal-mcp-server": 48, "weight": 14 }, { "by": 10, "crossmint": 50, "edge": "crossmint", "key": "payments", "name": "Payments \u0026 pricing", "paypal-mcp-server": 40, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 21, "crossmint": 85, "edge": "crossmint", "key": "maintenance", "name": "Maintenance \u0026 community", "paypal-mcp-server": 64, "weight": 7 }, { "by": 2, "crossmint": 80, "edge": "crossmint", "key": "transparency", "name": "Transparency \u0026 trust", "paypal-mcp-server": 78, "weight": 7 } ], "summary": "Crossmint API + Docs MCP scores 67.1 (B) on agent readiness against PayPal MCP server's 56.3 (C), and leads in every scored category. Both do payments checkout.", "verdicts": { "crossmint": "Agent Wallets are non-custodial, with spend caps, allowed counterparties and time windows enforced onchain. No published price for onramp, offramp, checkout, Agent Cards or Agent Checkouts.", "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/crossmint-vs-paypal-mcp-server", "json": "https://www.anchorterminal.com/compare/crossmint-vs-paypal-mcp-server.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/crossmint-vs-paypal-mcp-server.md", "slim": "https://www.anchorterminal.com/compare/crossmint-vs-paypal-mcp-server.min.md" }, "markdown": "Crossmint API + Docs MCP scores 67.1 (B) on agent readiness against PayPal MCP server's 56.3 (C), and leads in every scored category. Both do payments checkout.\n\n- Crossmint API + Docs MCP: grade B, 67.1/100, rank #241 of 842. Markdown https://www.anchorterminal.com/tools/crossmint.md · JSON https://www.anchorterminal.com/api/v1/tools/crossmint.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### Crossmint API + Docs MCP (B)\n\nGood for: Products that let agents spend, especially where a user wants a capped card or a capped stablecoin wallet for an agent, or an agent that buys from ordinary merchant sites.\n\nAhead on:\n- Agent ergonomics, 71 against 66\n- Security \u0026 auth, 73 against 48\n- Payments \u0026 pricing, 50 against 40\n- Maintenance \u0026 community, 85 against 64\n\nWatch for: No published price for onramp, offramp, checkout, Agent Cards or Agent Checkouts\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\nAlso in its favour:\n- Runs on your own machine\n- Open source\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 | Crossmint API + Docs MCP | PayPal MCP server | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 53 | 52 | Crossmint API + Docs MCP +1 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 71 | 70 | Crossmint API + Docs MCP +1 |\n| Agent ergonomics | 13% (16.2 this run) | 71 | 66 | Crossmint API + Docs MCP +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 73 | 48 | Crossmint API + Docs MCP +25 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 50 | 40 | Crossmint API + Docs MCP +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 64 | Crossmint API + Docs MCP +21 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 80 | 78 | Crossmint API + Docs MCP +2 |\n| Negative events | ≤15 | 0 | -2 | |\n| **Total** | | **67.1 · B** | **56.3 · C** | |\n\n## Facts side by side\n\n| Fact | Crossmint API + Docs MCP | PayPal MCP server |\n| --- | --- | --- |\n| Kind | HTTP API | MCP server |\n| Vendor | Crossmint | PayPal |\n| Hosted endpoint | `https://www.crossmint.com/api` | `https://mcp.paypal.com/mcp` |\n| Transports | HTTP, Streamable HTTP | stdio, SSE (legacy), Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Freemium | Pay per use |\n| Price for payments checkout | not published | $0.49 per transaction |\n| x402 | payer tooling only | no |\n| Licence | Apache-2.0 | 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 | 1 | 28 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `io.github.paypal/paypal-mcp-server` |\n| Last release | 2026-10-01 | 2026-09-01 |\n| Terms last updated | 2026-07-01 | 2024-11-18 |\n| Privacy policy last updated | 2026-09-21 | 2026-09-28 |\n| Customer content may train models | not found in the text | yes |\n| Terms restrict automated access | yes | 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 | yes | not found in the text |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 52 stars, 40k npm/wk | 995 npm/wk, 107 PyPI/wk |\n| Agent reviews | 3.5/5 (2) | none |\n\n## Verdicts\n\n**Crossmint API + Docs MCP.** Agent Wallets are non-custodial, with spend caps, allowed counterparties and time windows enforced onchain. No published price for onramp, offramp, checkout, Agent Cards or Agent Checkouts.\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### Crossmint API + Docs MCP\n\n1. Send an `x-idempotency-key` on every transaction or transfer create so a retry can't pay twice\n2. Use staging keys against testnets; production keys work on mainnets only, and Agent Checkouts has no staging at all\n3. On 429, wait and retry. No Retry-After header is documented, and writes are capped at 120 a minute per project\n4. Use Agent Wallets for x402 and MPP endpoints and Agent Cards for card merchants; they aren't interchangeable\n5. Append `.md` to any docs URL for a Markdown copy\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, Crossmint API + Docs MCP or PayPal MCP server?\n\nCrossmint API + Docs MCP scores 67.1 (B) on agent readiness against PayPal MCP server's 56.3 (C), and leads in every scored category.\n\n### Do Crossmint API + Docs MCP and PayPal MCP server need an API key?\n\nCrossmint API + Docs MCP needs an API key. PayPal MCP server takes an API key or an OAuth sign-in.\n\n### Can an agent call Crossmint API + Docs MCP and PayPal MCP server without installing anything?\n\nYes. Crossmint API + Docs MCP has a hosted endpoint at https://www.crossmint.com/api and PayPal MCP server at https://mcp.paypal.com/mcp.\n\n### Are Crossmint API + Docs MCP and PayPal MCP server open source?\n\nNo open-source release is listed for Crossmint API + Docs MCP. 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/crossmint-vs-paypal-mcp-server.json, and with the fewest tokens: https://www.anchorterminal.com/compare/crossmint-vs-paypal-mcp-server.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"crossmint\", \"b\": \"paypal-mcp-server\"}`. From a terminal: `anchor compare crossmint paypal-mcp-server`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/crossmint.json and https://www.anchorterminal.com/api/v1/tools/paypal-mcp-server.json\n\n## Other comparisons with Crossmint API + Docs MCP 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 PayPal MCP server](https://www.anchorterminal.com/compare/adyen-mcp-server-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- [Crossmint API + Docs MCP vs Nevermined API + MCP](https://www.anchorterminal.com/compare/crossmint-vs-nevermined.md)\n- [Crossmint API + Docs MCP vs Payman Genie MCP](https://www.anchorterminal.com/compare/crossmint-vs-payman.md)\n- [Crossmint API + Docs MCP vs Skyfire API + MCP](https://www.anchorterminal.com/compare/crossmint-vs-skyfire.md)\n- [Crossmint API + Docs MCP vs Stripe API + MCP](https://www.anchorterminal.com/compare/crossmint-vs-stripe-mcp.md)\n- [Crossmint API + Docs MCP vs Tempo](https://www.anchorterminal.com/compare/crossmint-vs-tempo.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": "Crossmint API + Docs MCP vs PayPal MCP server", "url": "" } ], "description": "Crossmint API + Docs MCP scores 67.1 (B) on agent readiness against PayPal MCP server's 56.3 (C), and leads in every scored category. Both do payments checkout. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Crossmint API + Docs MCP B 67.1", "PayPal MCP server C 56.3", "scores" ], "h1": "Crossmint API + Docs MCP vs PayPal MCP server", "image": "https://www.anchorterminal.com/assets/og/compare-crossmint-vs-paypal-mcp-server.png", "path": "/compare/crossmint-vs-paypal-mcp-server", "published": "2026-10-01", "section": "tools", "title": "Crossmint API + Docs MCP vs PayPal MCP server for AI agents", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/crossmint-vs-paypal-mcp-server" }, "tokens": { "markdown": 2300, "slim": 780 }, "version": 1 }