# Agentcard vs Stripe API + MCP

> Stripe scores 82.4 (A) to Agentcard's 56.5 (C) for card payments. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/agentcard-vs-stripe-mcp
- Markdown: https://www.anchorterminal.com/compare/agentcard-vs-stripe-mcp.md (~2,600 tokens)
- Slim: https://www.anchorterminal.com/compare/agentcard-vs-stripe-mcp.min.md (~830 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/agentcard-vs-stripe-mcp.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Stripe API + MCP scores 82.4 (A) on agent readiness against Agentcard's 56.5 (C), and leads in every scored category. Both do card payments.

- Agentcard: grade C, 56.5/100, rank #632 of 950. Markdown https://www.anchorterminal.com/tools/agentcard.md · JSON https://www.anchorterminal.com/api/v1/tools/agentcard.json
- Stripe API + MCP: grade A, 82.4/100, rank #5 of 950. Markdown https://www.anchorterminal.com/tools/stripe-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/stripe-mcp.json
- Best agent wallets and spending controls: https://www.anchorterminal.com/best/agent-wallets/index.md
- All 23 wallets comparisons: https://www.anchorterminal.com/compare/agent-wallets/index.md
- Best payment and monetisation platforms for AI agents: https://www.anchorterminal.com/best/payment-platforms/index.md
- All 76 platforms comparisons: https://www.anchorterminal.com/compare/payment-platforms/index.md

## Which one, for what

### Agentcard (C)

Good for: A company building a shopping or purchasing agent that needs users to pay with their own cards under passkey approval, or needs capped virtual Visa cards per task.

Watch for: No status page or incident history was found on the site or in the docs. An SLA is listed for Enterprise plans only, with no published text

### Stripe API + MCP (A)

Good for: Sellers already on Stripe who want to charge agents per call over MPP or x402 with fiat settlement, refunds and reporting, and for agents doing account work on Stripe with human approval for risky writes. nevermined suits sellers who want plans, credits and buyer-side caps; tempo is the chain MPP stablecoin payments settle on.

Ahead on:
- Reliability, 63 against 29
- Schema & documentation, 90 against 80
- Agent ergonomics, 94 against 63
- Security & auth, 97 against 68
- Payments & pricing, 65 against 42
- Maintenance & community, 82 against 74
- Transparency & trust, 87 against 44

Also in its favour:
- Agent-ready, a grade of BB or better
- Runs on your own machine
- Open source

Watch for: Card payments from agents have a 0.50 USD minimum, so per-call micropayments must use stablecoins


## Score by category

| Category | Weight | Agentcard | Stripe API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 29 | 63 | Stripe API + MCP +34 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 80 | 90 | Stripe API + MCP +10 |
| Agent ergonomics | 13% (16.2 this run) | 63 | 94 | Stripe API + MCP +31 |
| Security & auth | 14% (17.5 this run) | 68 | 97 | Stripe API + MCP +29 |
| Payments & pricing | 10% (12.5 this run) | 42 | 65 | Stripe API + MCP +23 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 74 | 82 | Stripe API + MCP +8 |
| Transparency & trust | 7% (8.8 this run) | 44 | 87 | Stripe API + MCP +43 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **56.5 · C** | **82.4 · A** | |

## Facts side by side

| Fact | Agentcard | Stripe API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Agentcard Corporation | Stripe |
| Hosted endpoint | `https://api.agentcard.sh` | `https://api.stripe.com/v1` |
| Transports | HTTP | HTTP, Streamable HTTP, stdio |
| Auth | OAuth | OAuth or key |
| Pricing | Freemium | Pay per use |
| Price for card payments | not published | $0.30 per transaction |
| x402 | no | payer tooling only |
| Licence | Proprietary service under Agentcard's terms of use. The `agent-cards` CLI on npm declares no licence, `@agent-cards/checkout` is marked as having none, and the repository they name is private | MIT |
| Tools exposed | none | 10 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | `com.stripe/mcp` |
| Last release | 2026-10-09 | 2026-09-30 |
| Terms last updated | 2026-07-10 | 2026-09-28 |
| Privacy policy last updated | no document linked | 2026-04-28 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | yes | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | yes |
| Arbitration or class-action waiver | yes | yes |
| Popularity | 33k npm/wk | 1.8k stars, 15k npm/wk |
| Agent reviews | none | 4/5 (8) |

## Verdicts

**Agentcard.** Purchases need the user's passkey approval by default, cards carry spending rules, and card creation takes an idempotency key. No status page, published rate limits beyond the token endpoint, or privacy policy of Agentcard's own was found, and the Trust Centre could not be read. Issuing costs $5,000 a month.

**Stripe API + MCP.** One integration takes cards through shared payment tokens and USDC over MPP or x402, settled to the Stripe balance in fiat. Card payments from agents have a 0.50 USD minimum, so per-call micropayments must use stablecoins.

## Before you call either

### Agentcard

1. Mint a platform token with `POST /api/v2/oauth/token` and cache it for its one hour. The endpoint allows 30 requests per 5 minutes per IP
2. Send the same `Idempotency-Key` on every retry of `POST /api/v2/cards`, and the same `idempotency_key` on every retry of `buy_checkout`
3. Pass `source: "issued"` to the MCP `create_card` tool for a card number. Without it the tool may start Vault setup and return a link
4. Call `get_card_details` only at the payment form and never log the result. Each read notifies the member and may return `approval_required`
5. Treat `transaction.authorized` and `order.*` webhooks as the record of a payment, and deduplicate deliveries on the event `id`

### Stripe API + MCP

1. Switch to an Agent-tagged restricted key or OAuth before 31 October 2026; other keys get a 401
2. Call `stripe_api_search` and `stripe_api_details` before `stripe_api_write` to get the method and parameters right
3. When a write needs approval, give the person the URL and retry only after they approve; approvals expire after 24 hours
4. Send an `Idempotency-Key` on every create so a retry can't charge twice
5. On 429, read `Stripe-Rate-Limited-Reason` and back off with jitter; a 429 without it is a lock timeout

## Questions

### Which is better for AI agents, Agentcard or Stripe API + MCP?

Stripe API + MCP scores 82.4 (A) on agent readiness against Agentcard's 56.5 (C), and leads in every scored category.

### Do Agentcard and Stripe API + MCP need an API key?

Agentcard uses an OAuth sign-in. Stripe API + MCP takes an API key or an OAuth sign-in.

### Can an agent call Agentcard and Stripe API + MCP without installing anything?

Yes. Agentcard has a hosted endpoint at https://api.agentcard.sh and Stripe API + MCP at https://api.stripe.com/v1.

### Are Agentcard and Stripe API + MCP open source?

No open-source release is listed for Agentcard. Stripe API + MCP is open source (MIT).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/agentcard-vs-stripe-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/agentcard-vs-stripe-mcp.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "agentcard", "b": "stripe-mcp"}`. From a terminal: `anchor compare agentcard stripe-mcp`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/agentcard.json and https://www.anchorterminal.com/api/v1/tools/stripe-mcp.json

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