googleapis/mcp-toolbox · error

error building req for endpoint [%v] :%v

Error message

error building req for endpoint [%v] :%v

What it means

Error "error building req for endpoint [%v] :%v" thrown in googleapis/mcp-toolbox.

Source

Thrown at internal/sources/dgraph/dgraph.go:205

	url, err := getUrl(hc.baseUrl, "/query", urlParams)
	if err != nil {
		return nil, err
	}
	p := struct {
		Query     string                 `json:"query"`
		Variables map[string]interface{} `json:"variables"`
	}{
		Query:     query,
		Variables: paramsMap,
	}
	body, err := json.Marshal(p)
	if err != nil {
		return nil, fmt.Errorf("error marshlling json: %v", err)
	}

	req, err := http.NewRequest(http.MethodPost, url, bytes.NewBuffer(body))
	if err != nil {
		return nil, fmt.Errorf("error building req for endpoint [%v] :%v", url, err)
	}

	req.Header.Add("Content-Type", "application/json")

	return hc.doReq(req)
}

// mutate sends an RDF mutation to the Dgraph server with "commitNow: true", embedding parameters.
// Returns the server's response as a byte slice or an error if the mutation fails.
func (hc *DgraphClient) mutate(mutation string, paramsMap map[string]interface{}) ([]byte, error) {
	mu := embedParamsIntoMutation(mutation, paramsMap)
	params := url.Values{}
	params.Add("commitNow", "true")
	url, err := getUrl(hc.baseUrl, "/mutate", params)
	if err != nil {
		return nil, err
	}
	req, err := http.NewRequest(http.MethodPost, url, bytes.NewBufferString(mu))

View on GitHub (pinned to 8cc6e09de2)

When it happens

Trigger: Thrown at internal/sources/dgraph/dgraph.go:205 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of googleapis/mcp-toolbox@8cc6e09de2 (2026-09-05). Data as JSON: /api/errors/38c4bac47d6e1431. Report an issue: GitHub.