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---
page: htroot/yacy/message.html
help: help/yacy/message.md
title: message
package: machine-api-peer
access: peer-service
kind: peer-endpoint
backend_java: source/net/yacy/htroot/yacy/message.java
---
# message
## Purpose
message exchanges messages between YaCy peers.
Use it for peer protocol communication, not casual browser messaging.
## What You Can Do Here
- Exchange peer protocol messages.
- Send exact sender, receiver, and message fields.
- Check whether the response confirms delivery or reports a protocol problem.
## Page Architecture
This is a compact endpoint-style page. Its behavior is driven mainly by request parameters and the selected response template, so callers should send only the fields needed for the specific query or peer-service action.
## Correct Use
Call the endpoint as a protocol surface. Use exact parameter names and encoded values, authenticate when required, and inspect the response before relying on it. Avoid sending browser-only submit buttons unless the backend explicitly requires the action key.
## Access And Safety
This is a peer-service endpoint for YaCy peer communication, not a normal editing page.
Behind a reverse proxy, YaCy accepts `X-Real-IP` as the effective client and
routing address only when the proxy socket IP matches
`server.reverseProxy.trusted` and the header contains one valid IPv4 or IPv6
address. Otherwise YaCy uses the socket IP. Authentication and access control
always use the socket IP. The proxy must overwrite, not pass through, any
client-supplied `X-Real-IP` value.
## Automation And API
Page backend: `source/net/yacy/htroot/yacy/message.java`.
| Endpoint | Method | Access | Backend |
| --- | --- | --- | --- |
| `/yacy/message.html` | `GET or POST` | peer-service | `source/net/yacy/htroot/yacy/message.java` |
### Parameter Guide
The table explains values that an agent or script must set deliberately. Parameters not relevant to a task should be omitted or left at the page default.
| Parameter | Meaning and valid values | Care |
| --- | --- | --- |
Example request shape:
```http
GET or POST /yacy/message.html?iam=...&message=...&myseed=...&process=...&subject=...
```
## What To Expect
Expect a compact service response rather than a teaching interface. The response may be XML, RSS, JSON-like text, plain text, or a small HTML template depending on the endpoint.
## Related Pages
- Related protocol work usually continues through the calling tool, the peer endpoint family under `/yacy/`, or the API page that consumes this response.