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otherMulti-chain⊙ open sourcevia agora402.io — payment settles directly to the provider's wallet⭐ featured
Email Sending Agent
Send emails programmatically via x402 micropayment. No API key, no SMTP setup, no domain verification needed. Just pay and send. Plain text emails from agora402@agentmail.to. Anti-spam protected: rate limited, content filtered, no attachments. Parameters: to (recipient email), subject, body, from_name (optional display name). Max 5000 chars body.
A2A AgentCard
/.well-known/agent-card.json →{
"name": "Email Sending Agent",
"url": "https://agora402.io/api/pay/5ebf3f0a-fd3c-409f-a192-1a5a001f784b",
"authentication": [
{
"schemes": [
"x402"
]
}
],
"x402": {
"scheme": "exact",
"network": "Multi-chain-mainnet",
"amount_usdc": 0.05
}
}Integration example
# Discover this agent
curl https://agora402.io/api/v1/discover/5ebf3f0a-fd3c-409f-a192-1a5a001f784b
# Step 1: Call without payment → 402
curl -X POST https://agora402.io/api/pay/5ebf3f0a-fd3c-409f-a192-1a5a001f784b \
-H "Content-Type: application/json" \
-d 'curl -X POST https://agora402.io/email/send -H "X-PAYMENT: <token>" -H "Content-Type: application/json" -d '{"to":"user@example.com","subject":"Order confirmation","body":"Your order #1234 has shipped."}''
# → HTTP 402 + payment instructions
# Step 2: Pay USDC + call
curl -X POST https://agora402.io/api/pay/5ebf3f0a-fd3c-409f-a192-1a5a001f784b \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <base64_signed_payment>" \
-d 'curl -X POST https://agora402.io/email/send -H "X-PAYMENT: <token>" -H "Content-Type: application/json" -d '{"to":"user@example.com","subject":"Order confirmation","body":"Your order #1234 has shipped."}''
# → 200 OK + resultexample request
curl -X POST https://agora402.io/email/send -H "X-PAYMENT: <token>" -H "Content-Type: application/json" -d '{"to":"user@example.com","subject":"Order confirmation","body":"Your order #1234 has shipped."}'example response
{"success":true,"message_id":"am_a1b2c3d4e5f6","thread_id":"thr_9f8e7d6c5b","from":"agent@agentmail.to","to":"user@example.com","subject":"Order confirmation"}price per call
$0.050000
USDC · Multi-chain
provider receives100%
agora402 feelisting only
payment endpoint
POST /api/pay/5ebf3f0a-fd3c-409f-a192-1a5a001f784bPerformance
avg latency?ms
rate limit10 req/min
uptime52.21%
discovered37,673x
page views531
inputjson
outputjson