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POST/api/v1/annotations/chart

Create a timeseries chart annotation (event marker)

Creates a chart_annotations event marker. projectId, kind, timestamp, label required; description and color optional.

Authentication

Send Authorization: Bearer YOUR_API_KEY on every request. Generate API keys at /dashboard/api-keys.

Request body required

Example

{
  "projectId": "00000000-0000-0000-0000-000000000000",
  "kind": "deploy",
  "timestamp": "2026-07-14T19:53:34.694Z",
  "label": "string",
  "description": "string",
  "color": "string"
}
Schema
{
  "application/json": {
    "schema": {
      "type": "object",
      "properties": {
        "projectId": {
          "type": "string",
          "format": "uuid",
          "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
        },
        "kind": {
          "type": "string",
          "enum": [
            "deploy",
            "incident",
            "release",
            "note"
          ]
        },
        "timestamp": {
          "type": "string",
          "format": "date-time",
          "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d(?::[0-5]\\d(?:\\.\\d+)?)?(?:Z))$"
        },
        "label": {
          "type": "string",
          "minLength": 1,
          "maxLength": 500
        },
        "description": {
          "type": "string",
          "maxLength": 5000
        },
        "color": {
          "type": "string",
          "pattern": "^#[0-9a-fA-F]{3,8}$"
        }
      },
      "required": [
        "projectId",
        "kind",
        "timestamp",
        "label"
      ],
      "additionalProperties": false
    }
  }
}

Response

201 example

{
  "success": true
}

All status codes

201Annotation created.
400(no description)
401(no description)
429(no description)

Code samples

cURL

curl -X POST \
  https://evalguard.ai/api/v1/annotations/chart \
  -H "Authorization: Bearer $EVALGUARD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "projectId": "00000000-0000-0000-0000-000000000000", "kind": "deploy", "timestamp": "2026-07-14T19:53:34.694Z", "label": "string", "description": "string", "color": "string" }'

TypeScript

import { EvalGuard } from "@evalguard/sdk";

const client = new EvalGuard({ apiKey: process.env.EVALGUARD_API_KEY });

const response = await client.request({
  method: "POST",
  path: "/api/v1/annotations/chart",
  body: {
    "projectId": "00000000-0000-0000-0000-000000000000",
    "kind": "deploy",
    "timestamp": "2026-07-14T19:53:34.694Z",
    "label": "string",
    "description": "string",
    "color": "string"
  },
});
console.log(response);

Python

from evalguard import EvalGuard
import os

client = EvalGuard(api_key=os.environ["EVALGUARD_API_KEY"])

response = client.request(
    method="POST",
    path="/api/v1/annotations/chart",
    body={
    "projectId": "00000000-0000-0000-0000-000000000000",
    "kind": "deploy",
    "timestamp": "2026-07-14T19:53:34.694Z",
    "label": "string",
    "description": "string",
    "color": "string"
},
)
print(response)

Go

package main

import (
	"context"
	"fmt"
	"net/http"
	"os"
	"strings"
)

func main() {
	body := strings.NewReader(`{"projectId":"00000000-0000-0000-0000-000000000000","kind":"deploy","timestamp":"2026-07-14T19:53:34.694Z","label":"string","description":"string","color":"string"}`)
	req, _ := http.NewRequestWithContext(context.Background(), "POST", "https://evalguard.ai/api/v1/annotations/chart", body)
	req.Header.Set("Authorization", "Bearer "+os.Getenv("EVALGUARD_API_KEY"))
	req.Header.Set("Content-Type", "application/json")
	resp, err := http.DefaultClient.Do(req)
	if err != nil { panic(err) }
	defer resp.Body.Close()
	fmt.Println(resp.Status)
}

Errors

400401429

Other Evals endpoints