Skip to content
POST/api/v1/traces

Ingest OTLP spans or legacy traces

Ingest OpenTelemetry spans in OTLP JSON format (resourceSpans). Also supports legacy agent trace format with steps.

Authentication

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

Request body required

Example

{
  "projectId": "00000000-0000-0000-0000-000000000000",
  "sessionId": "string",
  "steps": [],
  "metadata": {},
  "userId": "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)$"
        },
        "sessionId": {
          "type": "string",
          "maxLength": 200
        },
        "resourceSpans": {},
        "resource_spans": {},
        "steps": {
          "maxItems": 10000,
          "type": "array",
          "items": {}
        },
        "metadata": {
          "type": "object",
          "additionalProperties": {}
        },
        "userId": {
          "type": "string",
          "maxLength": 200
        }
      },
      "additionalProperties": {}
    }
  }
}

Response

All status codes

201Spans accepted
400Bad Request — EMPTY_PAYLOAD, VALIDATION_ERROR.
401Unauthorized — no valid credential was presented (AUTH_REQUIRED).
403Forbidden — FORBIDDEN.
404Not Found — PROJECT_NOT_FOUND.
409Conflict — CONFLICT.
429Too Many Requests — the per-key or per-organization rate limit was exceeded. Honour the Retry-After header.
500Internal Server Error — DB_ERROR.

Code samples

cURL

curl -X POST \
  https://evalguard.ai/api/v1/traces \
  -H "Authorization: Bearer $EVALGUARD_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "projectId": "00000000-0000-0000-0000-000000000000", "sessionId": "string", "steps": [], "metadata": {}, "userId": "string" }'

TypeScript

// The TypeScript SDK (@evalguard/sdk) exposes TYPED methods — runEval,
// getEval, runSecurityScan, checkFirewall, … — not a generic request().
// For an arbitrary endpoint, call it directly:

const res = await fetch("https://evalguard.ai/api/v1/traces", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.EVALGUARD_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "projectId": "00000000-0000-0000-0000-000000000000",
    "sessionId": "string",
    "steps": [],
    "metadata": {},
    "userId": "string"
  }),
});
console.log(res.status, await res.json());

Python

# The Python SDK (pip install evalguardai) exposes TYPED methods on
# EvalGuardClient — run_eval, get_eval, … — not a generic request().
# For an arbitrary endpoint, call it directly:

import os
import requests

headers = {"Authorization": f"Bearer {os.environ['EVALGUARD_API_KEY']}"}
headers["Content-Type"] = "application/json"

response = requests.request(
    "POST",
    "https://evalguard.ai/api/v1/traces",
    headers=headers,
    json={
    "projectId": "00000000-0000-0000-0000-000000000000",
    "sessionId": "string",
    "steps": [],
    "metadata": {},
    "userId": "string"
},
)
print(response.status_code, response.json())

Go

package main

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

func main() {
	body := strings.NewReader(`{"projectId":"00000000-0000-0000-0000-000000000000","sessionId":"string","steps":[],"metadata":{},"userId":"string"}`)
	req, _ := http.NewRequestWithContext(context.Background(), "POST", "https://evalguard.ai/api/v1/traces", 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

400401403404409429500

Other Traces endpoints