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Head to head · Checkout · October 2026 research run

Paid vs PayPal MCP server

PayPal MCP server scores 56.3 (C) on agent readiness against Paid's 55.1 (C), and leads in 4 of 7 scored categories. Paid leads on security & auth and maintenance & community. Both do checkout.

Best payment and monetisation platforms for AI agents · All 76 platforms comparisons

PaidAgent Paid Limited · HTTP API C55.1/100#669 of 950 PayPal MCP serverPayPal · MCP server C56.3/100#635 of 950

Which one, for what

Paid C

Good for A team selling an AI agent that needs usage metering, credit balances, cost and margin tracking and invoicing in one service, with Stripe as the payment rail.

Ahead on

  • Security & auth, 65 against 48
  • Maintenance & community, 77 against 64

Also in its favour

  • Free to start without a card

Watch for

The docs index advertises an OpenAPI 3.1 file at two addresses, and both returned 404 on 9 October 2026

PayPal MCP server C

Good 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.

Ahead on

  • Reliability, 52 against 35
  • Schema & documentation, 70 against 64
  • Payments & pricing, 40 against 30
  • Transparency & trust, 78 against 51

Also in its favour

  • Runs on your own machine
  • Open source

Watch for

The quickstart gives /http for streamable HTTP. On 8 October 2026 it returned 404 on both hosts, and /mcp returned the OAuth challenge

Score by category

CategoryWeight this runPaidPayPal MCP serverEdge
Reliability16%203552PayPal MCP server +17
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26470PayPal MCP server +6
Agent ergonomics13%16.27066Paid +4
Security & auth14%17.56548Paid +17
Payments & pricing10%12.53040PayPal MCP server +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87764Paid +13
Transparency & trust7%8.85178PayPal MCP server +27
Negative events≤150-2
Total55.1 · C56.3 · C

Facts side by side

FactPaidPayPal MCP server
KindHTTP APIMCP server
VendorAgent Paid LimitedPayPal
Hosted endpointhttps://api.agentpaid.io/api/v2https://mcp.paypal.com/mcp
TransportsHTTP, Streamable HTTPstdio, SSE (legacy), Streamable HTTP
AuthOAuth or keyOAuth or key
PricingFreemiumPay per use
Price for checkoutnot published$0.49 per transaction
x402nono
LicenceProprietary service under Paid's Master Subscription Agreement. The Node and Python SDKs on GitHub are MITApache-2.0 for the local server and the agent toolkit. The hosted server is a closed service under the PayPal Developer Agreement
Tools exposednone28
Read-only variant documentedyesno
llms.txtyesyes
MCP registrynot listedio.github.paypal/paypal-mcp-server
Last release2026-09-152026-09-01
Terms last updatedno date given2024-11-18
Privacy policy last updatedno date given2026-09-28
Customer content may train modelsnot found in the textyes
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textyes
Popularity24k npm/wk995 npm/wk, 107 PyPI/wk

Verdicts

Paid

Paid suits a builder who wants usage metering, credits and invoicing behind one API, with restricted and customer-bound keys, OAuth on the MCP server and a free plan that needs no card. No status page, SLA figure, API changelog or rate-limit numbers were found, both advertised OpenAPI links returned 404, and card payments need the builder's own Stripe account.

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.

Before you call either

Paid

  1. Call https://api.agentpaid.io/api/v2 with Authorization: Bearer <key>. A person creates the first key at app.paid.ai. No programmatic signup was found
  2. Give every signal a stable idempotencyKey and resend the same key on retry. Signals without one are not deduplicated
  3. Send at most 500 signals a request. A 429 rejects the whole batch, so wait for Retry-After and resend it all
  4. Read the code field on a 429. CONCURRENCY_LIMIT_EXCEEDED carries no Retry-After and clears when an analytics query finishes
  5. Install the Python SDK as paid-python, the name in its README and pyproject.toml. The quickstart's pip install paid names a package we could not check

PayPal MCP server

  1. Connect a remote client to https://mcp.paypal.com/mcp or /sse. The documented /http path returned 404 on 8 October 2026
  2. Set PAYPAL_ENVIRONMENT=PRODUCTION for live calls. Any other value, including the registry's LIVE, runs against the sandbox
  3. Refresh PAYPAL_ACCESS_TOKEN before it expires. The README gives expires_in 32400 seconds, and the local server takes no client ID or secret
  4. Pass --tools= with only the keys the task needs, such as invoices.list,orders.get. --tools=all loads 28 keys including refunds and captures
  5. Ask the user before create_refund, pay_order, cancel_subscription or accept_dispute_claim. The server applies them without a confirmation step

Questions

Which is better for AI agents, Paid or PayPal MCP server?

PayPal MCP server scores 56.3 (C) on agent readiness against Paid's 55.1 (C), and leads in 4 of 7 scored categories. Paid leads on security & auth and maintenance & community.

Do Paid and PayPal MCP server need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call Paid and PayPal MCP server without installing anything?

Yes. Paid has a hosted endpoint at https://api.agentpaid.io/api/v2 and PayPal MCP server at https://mcp.paypal.com/mcp.

Are Paid and PayPal MCP server open source?

No open-source release is listed for Paid. 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).

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