POST Submit an anonymous contact request
/api/v1/public/contact
Same-origin browser form; JSON or URL-encoded body, at most 64 KiB. The email address is Reply-To only; delivery recipient is fixed. Five attempts per network address in 15 minutes, 100 globally per hour. Success confirms SMTP acceptance; failures preserve input. No attachments or automatic reply.
On this page
Access and permissions
Same-origin browser form; JSON or URL-encoded body, at most 64 KiB. The email address is Reply-To only; delivery recipient is fixed. Five attempts per network address in 15 minutes, 100 globally per hour. Success confirms SMTP acceptance; failures preserve input. No attachments or automatic reply.
No account sign-in is required. Any listed browser-origin checks and rate limits still apply.
Parameters and headers
| Field | Location | Type and limits | Required | Meaning |
|---|---|---|---|---|
| lang | URL query | string; {"enum":["en","de"]} | No | Same-origin browser form; JSON or URL-encoded body, at most 64 KiB. The email address is Reply-To only; delivery recipient is fixed. Five attempts per network address in 15 minutes, 100 globally per hour. Success confirms SMTP acceptance; failures preserve input. No attachments or automatic reply. |
Request body
| Field | Type and limits | Required | Meaning |
|---|---|---|---|
| $ | object; {"additionalProperties":false} | Yes | — |
| string; {"format":"email","maxLength":254} | Yes | — | |
| $.message | string; {"maxLength":5000,"minLength":10} | Yes | — |
| $.name | string; {"maxLength":100} | No | — |
| $.subject | string; {"maxLength":150,"minLength":1} | Yes | — |
| $.website | string; {"maxLength":0} | No | — |
Responses
application/problem+json
| Field | Type and limits | Required | Meaning |
|---|---|---|---|
| $ | Problem | Yes | — |
| $.code | string | Yes | Stable machine-readable error code |
| $.detail | string | Yes | Short localized explanation without internal error details |
| $.instance | string | Yes | Unique relative identifier /api/v1/requests/{request_id}; not a retrievable resource |
| $.message | string | Yes | Temporarily identical to detail for existing clients |
| $.message_key | string | Yes | Stable translation key for changing the displayed language without another request |
| $.message_params | object; {"additionalProperties":true} | Yes | Named, safely rendered message parameters; never arbitrary HTML |
| $.request_id | string; {"pattern":"^[0-9a-f]{32}$"} | Yes | Server-generated diagnostic identifier. It contains no login token or credential. |
| $.status | integer; {"maximum":599,"minimum":400} | Yes | — |
| $.title | string | Yes | Localized HTTP status title |
| $.type | string; {"const":"about:blank"} | Yes | — |
application/problem+json
| Field | Type and limits | Required | Meaning |
|---|---|---|---|
| $ | Problem | Yes | — |
| $.code | string | Yes | Stable machine-readable error code |
| $.detail | string | Yes | Short localized explanation without internal error details |
| $.instance | string | Yes | Unique relative identifier /api/v1/requests/{request_id}; not a retrievable resource |
| $.message | string | Yes | Temporarily identical to detail for existing clients |
| $.message_key | string | Yes | Stable translation key for changing the displayed language without another request |
| $.message_params | object; {"additionalProperties":true} | Yes | Named, safely rendered message parameters; never arbitrary HTML |
| $.request_id | string; {"pattern":"^[0-9a-f]{32}$"} | Yes | Server-generated diagnostic identifier. It contains no login token or credential. |
| $.status | integer; {"maximum":599,"minimum":400} | Yes | — |
| $.title | string | Yes | Localized HTTP status title |
| $.type | string; {"const":"about:blank"} | Yes | — |
Retries and asynchronous work
This change does not have a general retry guarantee. If the response is unclear, read the affected resource before trying again. Follow Retry-After waiting times and request new sign-in or action codes when they expire.
Request examples
Replace demo IDs, timestamps and placeholders with your own values. For a retry, keep the same IDs, time and content. These examples do not run requests on this page.
Keep login links, codes, cookies and keys private. Do not print them in logs or share them in support requests.
curl --silent --show-error --output /dev/null --write-out "%{http_code}\n" \
--request POST \
--header @"$HOME/.config/metribeacon/headers.txt" \
--header "Origin: https://metribeacon.com" \
--header "Content-Type: application/json" \
--data-binary '{"email":"reader@example.test","subject":"Monitoring question","message":"Please explain the monitoring limits."}' \
"https://metribeacon.com/api/v1/public/contact"
import json
from pathlib import Path
from urllib.request import Request, HTTPRedirectHandler, build_opener
from urllib.error import HTTPError
headers = json.loads((Path.home() / ".config/metribeacon/headers.json").read_text())
headers["Origin"] = "https://metribeacon.com"
headers["Content-Type"] = "application/json"
request = Request("https://metribeacon.com/api/v1/public/contact", data="{\"email\":\"reader@example.test\",\"subject\":\"Monitoring question\",\"message\":\"Please explain the monitoring limits.\"}".encode("utf-8"), headers=headers, method="POST")
class NoRedirect(HTTPRedirectHandler):
def redirect_request(self, request, fp, code, message, headers, target):
return None
opener = build_opener(NoRedirect())
try:
with opener.open(request, timeout=10) as response:
print(response.status)
except HTTPError as error:
print(error.code)
error.close()
import { readFile } from "node:fs/promises";
import { homedir } from "node:os";
import { join } from "node:path";
const headers = JSON.parse(await readFile(join(homedir(), ".config/metribeacon/headers.json"), "utf8"));
headers["Origin"] = "https://metribeacon.com"
headers["Content-Type"] = "application/json";
const response = await fetch("https://metribeacon.com/api/v1/public/contact", {
method: "POST", headers, redirect: "manual",
signal: AbortSignal.timeout(10000), body: "{\"email\":\"reader@example.test\",\"subject\":\"Monitoring question\",\"message\":\"Please explain the monitoring limits.\"}",
});
console.log(response.status);
await response.body?.cancel();
package main
import (
"fmt"
"net/http"
"time"
"encoding/json"
"os"
"path/filepath"
"strings"
)
func main() {
home, err := os.UserHomeDir(); if err != nil { panic("request failed; credentials and response omitted") }
raw, err := os.ReadFile(filepath.Join(home, ".config/metribeacon/headers.json")); if err != nil { panic("request failed; credentials and response omitted") }
var headers map[string]string
if json.Unmarshal(raw, &headers) != nil { panic("invalid local headers") }
request, err := http.NewRequest("POST", "https://metribeacon.com/api/v1/public/contact", strings.NewReader("{\"email\":\"reader@example.test\",\"subject\":\"Monitoring question\",\"message\":\"Please explain the monitoring limits.\"}"))
if err != nil { panic("request failed; credentials and response omitted") }
for name, value := range headers { request.Header.Set(name, value) }
request.Header.Set("Origin", "https://metribeacon.com")
request.Header.Set("Content-Type", "application/json")
client := &http.Client{Timeout: 10*time.Second, CheckRedirect: func(*http.Request, []*http.Request) error { return http.ErrUseLastResponse }}
response, err := client.Do(request)
if err != nil { panic("request failed; credentials and response omitted") }
defer response.Body.Close()
fmt.Println(response.StatusCode)
}
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