Host Functions
Host functions are l'API surface expose by PRX to WASM plugins. They provide controlled access to host capabilities like HTTP requests, file operations, et agent state.
Available Host Functions
HTTP
| Function | Description | Permission |
|---|---|---|
http_request(method, url, headers, body) | Make an HTTP request | net.http |
http_get(url) | Shorthand for GET request | net.http |
http_post(url, body) | Shorthand for POST request | net.http |
Filesystem
| Function | Description | Permission |
|---|---|---|
fs_read(path) | Read a file | fs.read |
fs_write(path, data) | Write a file | fs.write |
fs_list(path) | List directory contents | fs.read |
Agent State
| Function | Description | Permission |
|---|---|---|
memory_get(key) | Read depuis ungent memory | agent.memory.read |
memory_set(key, value) | Write to agent memory | agent.memory.write |
config_get(key) | Read plugin configuration | agent.config |
Logging
| Function | Description | Permission |
|---|---|---|
log_info(msg) | Log at info level | Always allowed |
log_warn(msg) | Log at warn level | Always allowed |
log_error(msg) | Log at error level | Always allowed |
Permission Manifest
Chaque plugin declares required permissions in its manifest:
toml
[permissions]
net.http = ["api.example.com"]
fs.read = ["/data/*"]
agent.memory.read = true