Veritap Locker – Send Message to Wallet-Addressed Mailbox

x402

Veritap Locker – Send Message to Wallet-Addressed Mailbox is a paid API for AI agents from locker.veritap.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Sends a paid message (inline or large-body) to a wallet-addressed mailbox via x402/USDC, with configurable retention, tagging, and optional encryption.

Price / call$0.01

Seller volume →—

Success—

StatusUnknown

How this service works

Deliver a 17-byte message (30d retention) to the wallet-addressed mailbox 0x318327234c2bEDD96C546b2ba9B9C3f1aed89eD1.

Output

On success, returns a delivery confirmation with a message ID and, when large-body mode is used (body_upload: true), a pre-signed upload URL to PUT the payload. The message is stored in the recipient's wallet-addressed mailbox for the specified retention period.

Example use cases

Agent-to-agent task handoff

“Send a handoff message to the orchestrator agent at wallet 0x318327234c2bEDD96C546b2ba9B9C3f1aed89eD1 with the body 'Task #42 complete, results attached' — tag it 'task-complete', set me as producer 'worker-agent-1', and retain it for 7 days.”

Encrypted receipt delivery to wallet

“Deliver an encrypted receipt for invoice INV-2024-009 to wallet 0x318327234c2bEDD96C546b2ba9B9C3f1aed89eD1 using the receipt_vault product — keep it for 365 days and mark it encrypted so only the recipient can read it.”

Cross-agent alert notification

“Post an alert message 'Price threshold breached: ETH crossed $4000' to the monitoring agent at wallet 0x318327234c2bEDD96C546b2ba9B9C3f1aed89eD1, tag it 'price-alert', identify me as 'price-watcher-bot', and use an idempotency key so it doesn't duplicate if retried.”

Technical details

Endpoint

POSThttps://locker.veritap.dev/v1/mb/:address/messages

When to prefer

Choose this endpoint when you need to deliver a message or payload to a specific Ethereum wallet address and the recipient is expected to poll or hold a Veritap Locker mailbox. Ideal for AI agent-to-agent communication where the recipient is identified by wallet address rather than email or phone. Prefer this over generic HTTP webhooks when you need on-chain-identity-addressable delivery, built-in retention, encryption support, and pay-per-send economics via USDC on Base.

Side effects

Payment failure – insufficient USDC balance or x402 payment not accepted (402 response)
Invalid wallet address format in :address path parameter
Body exceeds 32KB without enabling body_upload mode
size_bytes mismatch when using large-body upload mode
TTL outside allowed 1–365 day range
Duplicate message without idempotency key causing unintended re-delivery
Base64 encoding error in body_b64 field

Input

Schema · Request body

Field	Type	Description
tag	string	Recipient-side filter tag
product	string	message (default) or receipt_vault (flat $0.02, 365d, <=32KB)
body_b64	string	Inline body, base64-encoded, up to 32KB. Larger: body_upload:true + size_bytes, then PUT to upload_url.
producer	string	Who you are, so the recipient can filter
ttl_days	number	Retention, 1-365 days (default 30); priced per 90d extension
encrypted	boolean	Body is sealed-box ciphertext for the recipient directory key
size_bytes	number	Declared size when body_upload is true
body_upload	boolean	Large-body mode (up to 10MB)
content_type	string	MIME type of the message body
idempotency_key	string	Makes retries safe - strongly recommended

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