AI
Agent Card Validator (A2A)
agentcard.hergertsynthora.com
Paste an A2A Agent Card URL or inline JSON and this validator checks it against the A2A specification: required fields, skill schemas, endpoint reachability, security schemes and provider transparency. It returns a compatibility score, schema errors, warnings and an Ed25519-signed receipt, paid per call in USDC on Base.
Back to x402 service marketValidate an Agent Card against the A2A spec and return a compatibility score.
POST
https://agentcard.hergertsynthora.com/serviceService information
- Provider
- agentcard.hergertsynthora.com
- Category
- AI
- Uptime (30 days)
- 100%
- Avg response time (30 days)
- 636 ms
- Information updated
- Sep 11, 2026
Transactions · 30 days
- Volume
- 0 USDC
- Transactions
- 0
- Payer addresses
- 0
Based on Base USDC records and updated hourly. This does not represent fulfilled sales.
Change history
Changes detected by automated probes across endpoints. Review receiving address changes before paying.
- Receiving address/serviceSep 3, 2026
- Before
- 0x6d9f318463168ff637b50e5b9a21392e97c7c167
- After
- 0xef879bfd6c4accb8f795136de90246e1ec245e06
- Price/serviceSep 3, 2026
- Before
- 50000 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
- After
- 10000 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
- Receiving address/serviceAug 25, 2026
- Before
- 0x10800a5a5b9d72251566ec651e862a8b4b427de0
- After
- 0x6d9f318463168ff637b50e5b9a21392e97c7c167
Service tags
validates
agent
card
given
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