---
name: x402-echo-service.fly.dev
description: x402-echo-service.fly.dev exposes a single endpoint that accepts a text message via POST, persists it, and returns a UUID handle. It does not provide retrieval, querying, or any other data operations.
host: x402-echo-service.fly.dev
---

# x402-echo-service.fly.dev

This host is a minimal message-storage service. It serves agents that need to durably store a short text string and receive a stable UUID reference for that stored value. It offers no read, update, delete, or search capabilities — only write-and-get-handle.

## When to use this host

Use this host when an agent needs to persist a short text message and obtain a stable UUID reference for later use by an external system that can perform its own retrieval. Do not use this host if you need to retrieve, search, list, or delete stored messages — it provides no read or query endpoints. If your workflow requires both storing and fetching message content, this host is insufficient on its own and you will need a separate storage or database service that supports full CRUD operations.

## Capabilities

### Message Storage

Accepts a text message and returns a UUID handle that references the stored entry. This is the sole capability of the host.

- **`store-message-echo`** — Stores a text message via POST and returns a UUID handle that can be used to retrieve it later.

## Skill reference

### `store-message-echo`

**EchoVault Message Store** — Stores a text message via POST and returns a UUID handle that can be used to retrieve it later.

*Use when:* Use when an agent needs to persist a short text message and receive a stable UUID reference for subsequent retrieval.

*Not for:* Do not use for querying or retrieving previously stored messages; this endpoint only stores and returns a handle, not the message content.

**Inputs:**

- `message` (string, required) — A message to store.

**Returns:** Returns a JSON object with a single field 'id' containing a UUID string identifying the stored message.

**Example:** `{"message": "Please provide a detailed analysis"}`

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