Eleidon

Eleidon is an Email Management tool that provides trusted email for AI agents. It verifies inbound emails before agents act and signs outbound emails for authenticity.

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At a glance

Pricing

Freemium · Paid · Usage-based

Free tier

Yes

API

Yes

Skill level

Technical

About

What is Eleidon?

Eleidon offers a cryptographic identity verification API specifically designed for AI agents communicating via email. It addresses the challenge of trust in agentic email by allowing agents to register their identity and sign outbound messages with a private key, ensuring recipients know the email is real and untampered. Conversely, it verifies inbound emails, protecting agents from fraudulent messages. The platform provides SDKs for various stacks, including TypeScript and Python, and supports the Model Context Protocol (MCP). Eleidon aims to provide an audit trail and confidence scores for email interactions, ensuring message integrity and agent identity verification.

Best used for

Ideal for developers and startup founders who need to secure AI agent email communications, verify inbound messages for authenticity, and cryptographically sign outbound emails. Especially valuable for ensuring trust and preventing fraud in agent-to-agent or agent-to-human interactions.

Common actions

verify email authenticity

secure AI agent communication

sign outbound emails

prevent email fraud

emailprivacySecurity

Capabilities

Key features

Ed25519 digital signatures
Agent identity registration
Inbox ownership verification
Canonical message hashing
Email verification API

Target Audience

developerstartup founderproduct manager

Integrations

Not yet documented

Pricing & Plans

Freemium · Paid · Usage-based

Not publicly disclosed. Check eleidon.com for current pricing.

FAQs

How does Eleidon verify agent identity for emails?

Eleidon uses Ed25519 digital signatures. Agents generate a keypair, register their public key with a claimed inbox, and verify ownership. Each outgoing email is signed with the agent's private key, adding a header that recipients can use to verify the message's authenticity and the agent's identity.

What is the difference between signing and verification pricing?

Signing emails with Eleidon is always free and unlimited for any agent. Verification, however, is metered by plan to protect your inbound email traffic. There's a free tier for up to 100 verifications per month, with paid plans offering higher verification limits.

Does Eleidon provide SDKs for different programming languages?

Yes, Eleidon offers SDKs to facilitate integration. There is a TypeScript SDK with full client capabilities for signing, verification, and key management, and a Python SDK powered by PyNaCl for Python agents. They also provide an MCP server and a CLI tool.

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