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Head to head · Card payments · October 2026 research run

Agentcard vs Kite Agent Passport

Agentcard scores 56.5 (C) on agent readiness against Kite Agent Passport's 51.5 (D), and leads in 3 of 7 scored categories. Kite Agent Passport leads on reliability, agent ergonomics and transparency & trust. Both do card payments.

Best agent wallets and spending controls · All 30 wallets comparisons

AgentcardAgentcard Corporation · HTTP API C56.5/100#637 of 961 Kite Agent PassportKite AI · Platform D51.5/100#755 of 961

Which one, for what

Agentcard C

Best 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.

Ahead on

  • Schema & documentation, 80 against 64
  • Payments & pricing, 42 against 35

Also in its favour

  • A hosted endpoint, with nothing to install
  • No incidents deducted, where Kite Agent Passport loses 5 points for them

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

Kite Agent Passport D

Best for Coding agents such as Claude Code or Codex that need to pay x402 or MPP services within budgets a person approves by passkey.

Ahead on

  • Reliability, 35 against 29
  • Agent ergonomics, 68 against 63
  • Transparency & trust, 56 against 44

Watch for

A person signs up by email, clicks a verification link and creates a passkey in a browser before any agent can spend

Score by category

CategoryWeight this runAgentcardKite Agent PassportEdge
Reliability16%202935Kite Agent Passport +6
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28064Agentcard +16
Agent ergonomics13%16.26368Kite Agent Passport +5
Security & auth14%17.56872Kite Agent Passport +4
Payments & pricing10%12.54235Agentcard +7
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87471Agentcard +3
Transparency & trust7%8.84456Kite Agent Passport +12
Negative events≤150-5
TotalC 56.5/100D 51.5/100

Facts side by side

FactAgentcardKite Agent Passport
KindHTTP APIPlatform
VendorAgentcard CorporationKite AI
Hosted endpointhttps://api.agentcard.shno (local only)
TransportsHTTPHTTP
AuthOAuthOAuth or key
PricingFreemiumPay per use
x402nopayer tooling only
LicenceProprietary 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 privateClosed service under terms from Datalego Inc. dated 29 April 2026. The Passport Skills repository is MIT. The kpass CLI is distributed as binaries and its source repository is private.
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-092026-10-07
Terms last updated2026-07-10
Privacy policy last updatedno document linked
Customer content may train modelsnot found in the text
Terms restrict automated accessyes
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
Popularity33k npm/wknone

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.

Kite Agent Passport

Spending sessions with per-transaction and total caps, a lifetime and passkey approval are enforced by the service, with step-up checks and an audit log. A person must sign up by email and create a passkey before an agent can pay. No published fee rate, OpenAPI file or Passport status page was found.

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

Kite Agent Passport

  1. Run kpass with --output json --no-interactive and branch on the exit code and error_code. Exit 6 is a session policy breach, so request a new session rather than logging in again
  2. Pass --idempotency-key on every kpass session execute so a retry after a timeout does not pay twice
  3. Ask the person for a session with a small per-transaction cap and a short --ttl, and confirm the merchant URL before executing
  4. Use kpass sandbox test mode and the faucet to try a payment flow without real funds. Scoped cards are not available in sandbox
  5. Check the kite-passport skill's trigger rules before installing it, since it directs the agent to paid services ahead of free tools

Questions

Which is better for AI agents, Agentcard or Kite Agent Passport?

Agentcard scores 56.5 (C) on agent readiness against Kite Agent Passport's 51.5 (D), and leads in 3 of 7 scored categories. Kite Agent Passport leads on reliability, agent ergonomics and transparency & trust.

Can an agent call Agentcard and Kite Agent Passport without installing anything?

Agentcard has a hosted endpoint at https://api.agentcard.sh. No hosted endpoint is listed for Kite Agent Passport.

Other comparisons with Agentcard or Kite Agent Passport

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