majiayu000/claude-arsenal
xiaohongshu
xiaohongshu
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Datadog API Authentication
datadog-auth
Troubleshoot Datadog API authentication issues (401/403 errors), understand API keys vs app keys, and configure correct regions. Use when hitting auth errors or setting up Datadog API access.
SKILL.md
Full skill instructions
Datadog API Authentication
TL;DR
- Most v2 endpoints require two headers:
DD-API-KEY— org-scoped API key (32 hex chars)DD-APPLICATION-KEY— application key VALUE (secret; 40 hex chars)
- Do not send key IDs (UUIDs) in headers. Always send the key values (secrets).
- Pick the correct region/site (e.g.,
us3.datadoghq.com) so the base ishttps://api.<DD_SITE>. - Some APIs (including Incidents v2) do not support scoped app keys. Use an unscoped app key.
Terms at a Glance
| Item | Example | Use in requests |
|---|---|---|
| API key (value) | aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa (32 hex) | Header DD-API-KEY |
| Application key (value, secret) | bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb (40 hex) | Header DD-APPLICATION-KEY |
| API key ID | xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx (UUID) | Not for auth |
| Application key ID | yyyyyyyy-yyyy-yyyy-yyyy-yyyyyyyyyyyy (UUID) | Not for auth |
Regions / Sites
| Region | API Base |
|---|---|
| US1 | https://api.datadoghq.com |
| US3 | https://api.us3.datadoghq.com |
| US5 | https://api.us5.datadoghq.com |
| EU1 | https://api.datadoghq.eu |
| AP1 | https://api.ap1.datadoghq.com |
| AP2 | https://api.ap2.datadoghq.com |
Quick Validation
# Test API key only (no app key needed)
curl -sS -H "DD-API-KEY: $DD_API_KEY" https://api.$DD_SITE/api/v1/validate
# Or use the CLI
dd validate
Common Errors
| HTTP | Symptom | Likely cause | Fix |
|---|---|---|---|
| 401 | Unauthorized | Wrong app key value, wrong site/org, using key ID instead of value | Use the secret value, verify region |
| 403 | scoped app keys not supported | Using a scoped app key | Use an unscoped app key |
| 403 | Generic | Missing permission on owner's role | Adjust role permissions |
Troubleshooting Checklist
- API key valid? Run
dd validate - Region mismatch? Check which site returns 200:
for site in us3.datadoghq.com datadoghq.com datadoghq.eu; do code=$(curl -s -o /dev/null -w "%{http_code}" -H "DD-API-KEY: $DD_API_KEY" "https://api.$site/api/v1/validate") echo "$site -> $code" done - Copy/paste artifacts? Strip whitespace:
export DD_APP_KEY="$(printf %s "$DD_APP_KEY" | tr -d '\r\n')"
Scoped vs Unscoped Application Keys
- Unscoped: inherits permissions from its owner. Use when API doesn't support scoped keys.
- Scoped: limited to listed scopes. Use for least privilege when supported.
If you see "This API does not support scoped app keys," use an unscoped app key.
References
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