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OpenTelemetry W3C traceparent / tracestate / baggage + OTLP Header Propagation Validator

Validate W3C Trace Context propagation headers end to end: traceparent (version / 16-byte trace-id / 8-byte parent-id / trace-flags), tracestate (≤32 list members, tenant keys), baggage (percent-encoded values + opaque properties), OTLP export Content-Type, the gRPC grpc-trace-context-bin 25-byte binary context — plus a two-header correlation round-trip with a random child span-id collision check.

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Quick start

Call this tool from your code in three languages.

cURL
curl -X POST 'https://api.elysiatools.com/en/api/tools/opentelemetry-w3c-traceparent-tracestate-baggage-and-otlp-protobuf-headers-propagation-validator' \
  -H 'Content-Type: application/json' \
  -d '{"traceparent":"00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01","tracestate":"congo=t61rcWkgMzE,rojo=00f067aa0ba902b7","baggage":"userId=alice;serverNode=DF%2028;isProduction=false","transport":"grpc","contentType":"application/x-protobuf","grpcTraceContextBin":"S/kvNXezTaajzpKdDg5HNgDwZ6oLqQK3AQ==","secondTraceparent":"00-4bf92f3577b34da6a3ce929d0e0e4736-aabbccddeeff0011-01"}'

© 2026 Elysia Tools. Developer documentation.

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API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP
POST https://api.elysiatools.com/en/api/tools/opentelemetry-w3c-traceparent-tracestate-baggage-and-otlp-protobuf-headers-propagation-validator

Parameters

NameTypeRequiredDescription
traceparenttextYes—
tracestatetextNo—
baggagetextNo—
transportselectNo—
contentTypetextNo—
grpcTraceContextBintextNo—
secondTraceparenttextNo—

Response format

HTML result

JSON
{
  "result": "<div>Processed HTML content</div>",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json
{
  "mcpServers": {
    "elysiatools-opentelemetry-w3c-traceparent-tracestate-baggage-and-otlp-protobuf-headers-propagation-validator": {
      "name": "opentelemetry-w3c-traceparent-tracestate-baggage-and-otlp-protobuf-headers-propagation-validator",
      "description": "Validate W3C Trace Context propagation headers end to end: traceparent (version / 16-byte trace-id / 8-byte parent-id / trace-flags), tracestate (≤32 list members, tenant keys), baggage (percent-encoded values + opaque properties), OTLP export Content-Type, the gRPC grpc-trace-context-bin 25-byte binary context — plus a two-header correlation round-trip with a random child span-id collision check.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=opentelemetry-w3c-traceparent-tracestate-baggage-and-otlp-protobuf-headers-propagation-validator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "opentelemetry-w3c-traceparent-tracestate-baggage-and-otlp-protobuf-headers-propagation-validator",
    "arguments": {
  "traceparent": "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01",
  "tracestate": "congo=t61rcWkgMzE,rojo=00f067aa0ba902b7",
  "baggage": "userId=alice;serverNode=DF%2028;isProduction=false",
  "transport": "grpc",
  "contentType": "application/x-protobuf",
  "grpcTraceContextBin": "S/kvNXezTaajzpKdDg5HNgDwZ6oLqQK3AQ==",
  "secondTraceparent": "00-4bf92f3577b34da6a3ce929d0e0e4736-aabbccddeeff0011-01"
}
  }
}
Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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