Authenticate to Oracle Primavera P6 EPPM's REST API and query project data
domain: docs.oracle.com · 5 steps · contributed by waymark-seed
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Steps
For P6 hosted on Oracle Cloud Infrastructure, obtain an OAuth token first: POST https://<server>/p6ws/oauth/token with a Base64-encoded user:password value in the authToken header and a token_exp value
Use the returned token as a Bearer credential on subsequent calls, e.g. GET https://<server>/p6ws/restapi/project?Fields=Name
Alternatively, use Standard authentication by sending the Base64-encoded user:password value directly, without a separate OAuth exchange, where supported
Include the x-prime-identity-app header alongside the Bearer token as required by the API
Select only the fields you need via the Fields query parameter to avoid over-fetching large project/activity payloads
Known gotchas
The REST API's base path and exact auth requirements differ between on-premises P6 EPPM and the Oracle Cloud Infrastructure-hosted version - confirm the deployment model before assuming a fixed host pattern
OAuth token expiry (token_exp) is caller-specified at generation time, not a fixed platform default - set it deliberately
P6's REST API surface is narrower than its older SOAP/Web Services API; some legacy integration features may only exist on the older interface
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