agentpay — card-funded wallets for AI agents
https://entangleit.com/api/agentpay/mcp ↗
Description
Prepaid USD wallets for AI agents: card top-ups, scoped keys, BSV x402 payments over MCP.
What our measurements say
agentpay — card-funded wallets for AI agents is a remote MCP server published at entangleit.com. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 685 ms, a delay an agent will notice. It exposes a broad tool surface of 24 tools. On the protocol side it speaks the 2026-07-28 stateless spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names are generally descriptive and align with their purposes.
- Descriptions provide context for when tools should be used.
Weaknesses
- Some parameters (e.g., 'params' in pay_service) are ambiguously typed or lack context.
- Error conditions are not consistently documented across all tools.
pay_service— Parameter 'params' is an object type with no schema clarification.spend— Error handling (402) is mentioned but no fallback guidance is provided.list_services— No mention of handling empty query results or rate limits.
Verdict
Event narrative
Sign up free to generateRaw observations
| Run | Era | Modern |
|---|
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 52ms → warm 42ms (penalty 10ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
healthCheck that the agentpay API and MCP are up.
get_balanceWallet balance, agent identity, and daily limit status for the current agent key.
keystring
create_topup_linkCreate a Stripe Checkout URL that a human opens to fund the wallet. Amount between 100 and 100000 cents USD.
amountCentsintegerrequiredkeystring
create_upgrade_linkCreate a Stripe Checkout URL to upgrade the wallet to agentpay Pro (more agent keys, higher daily limits, CSV export). Hand the URL to the human who owns the wallet.
keystring
list_servicesBrowse the x402market registry of pay-per-call services for agents. Public — no key needed. Returns tools, network, payTo, and per-tool price in sats.
qstringlimitinteger
service_quoteCall a registry tool unsigned and return the live 402 payment requirements (price/payTo). Public — no key needed. Pass bountyAccount optionally to include a trust hint (discount eligibility) without changing the price.
serviceIdstringrequiredtoolstringrequiredbountyAccountinteger
spendDebit the wallet and mint a receipt. Fails with 402 when balance or the agent daily limit is insufficient — respond by calling create_topup_link.
amountCentsintegerrequireddescriptionstringrequiredservicestringtoolstringrefstringapprovalIdstringkeystring
pay_serviceOne call for paid registry tools: quotes the seller's x402 challenge, pays it from the site wallet on BSV mainnet, debits the agent wallet, and returns the seller's result plus txid. If the seller rejects the payment, the debit is refunded. Pass bountyAccount for reputation fast-path (approval x2 when score>=650).
serviceIdstringrequiredtoolstringrequiredparamsobjectamountCentsintegerdescriptionstringrefstringapprovalIdstringbountyAccountintegerdryRunbooleankeystring
mint_subagentDelegate a scoped child key for a worker: its own lifetime budget (cents), expiry (minutes), daily limit, and tool allowlist. Only top-level agents can delegate. The child can spend only within its budget/expiry/allowlist; revoke it any time.
namestringrequiredbudgetCentsintegerdailyLimitCentsintegerexpiresInMinutesintegerallowedToolsarrayapprovalAboveCentsintegerkeystring
list_subagentsList the child keys delegated by the current agent, with budget, spend, expiry, and status.
keystring
revoke_subagentRevoke a delegated child key immediately.
agentIdstringrequiredkeystring
get_attestationAsk agentpay to sign a summary of this wallet's settled activity (payments, distinct services/payees, spend, refunds, bounty earnings) for a window. Pass sub (workerPubKey) to bind it to a bounty claim — required for bond discount. Free.
daysintegersubstringkeystring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Dual-era
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