400-Bad request

Elastic Stack Elasticsearch
,
1

Below is my payload but it works only when query_body is empty. I couldn’t figure out whats wrong inside it. I have a Docker container for the MCP server and it throws Bad Request every time.
payload = {
"jsonrpc": "2.0",
"id": 11,
"method": "tools/call",
"params": {
"name": "search",
"arguments": {
"index": "chunking_test",
"query_body": {
"size": 10,
"query": {
"bool": {
"must_not": [{"term": {"type.keyword": {"value": "Image"}}}]
}
},
"knn": {
"field": "embedding",
"query_vector": query_vector,
"k": k,
"num_candidates": k*10
}
}
}
}
}

2

Hello @tarun-ghcp

Welcome to the Community!!

Could you please check once below line :

"must_not": [{"term": {"type.keyword": {"value": "Image"}}}]

I am not sure if we need to use value in the query as per the documentation

 "bool": {
            "must_not": [
              { "term": { "type.keyword": "Image" } }
            ]
          }

Thanks!!

3

This is my updated payload. But still same issue that if not keeping anything inside query_body, it gives me the result….

payload = {
"jsonrpc": "2.0",
"id": 11,
"method": "tools/call",
"params": {
"name": "search",
"arguments": {
"index": "chunking_test",
"query_body": {
"knn": {
"field": "embedding",
"query_vector": query_vector,
"k": k,
"num_candidates": k*10
},
"query": {
"fields": ["text.document.documentTitle", "text.document.fileName"],
"must_not": [
{"term": {"type.keyword": {"value": "Image"}}}
]
},
"size":10
}
}
}
}