Security-related question about a possible exposed credential

[Emma-NYL]

Hello,

My name is Emma, I am conducting an academic study on possible credential exposure in public GitHub repositories.

While analyzing this repository, I found a string that may represent a credential. I'm including the code snippet below containing possible leakage. To avoid exposing sensitive information publicly, I marked the sensitive information.

Could you please help clarify whether the detected string is:

1. a real credential, or
2. a placeholder / example value?

Thank you for your time.

---

Code snippet (sensitive values masked):

#define INFLUXDB    2u
#define THINGSPEAK  3u
#define CHORDS      4u

// Xively parameters
int XIVELY_FEED_ID = 726713202;
const char *xively_api_key = "exa****key";
const char *xively_endpoint = "api.x****y.com";
const char *xively_port = "8****";

// Influxdb parameters
int INFLUXDB_AUTHENTICATION = 0u;
const char *influxdb_endpoint = "example.comp****amazonaws.com";

Thank you in advance for your time - I really appreciate it!

Sincerely,
Emma