Defense Contract Audit Agency

DCAA Contractor Submission Portal (CSP)

The portal a defense contractor uses to file, update or withdraw a certified incurred cost submission with DCAA. It is a DCAA-operated application on a DCAA host, but every path redirects unauthenticated callers to the DoD Procurement Integrated Enterprise Environment (PIEE) authorization endpoint — OAuth 2.0 authorization code with PKCE (S256), client_id csp, scopes openid and profile. Access requires a DoD PIEE account, not a developer credential. No API, no specification and no machine-readable contract are published for it; it is recorded here because it is the agency's only write surface and its authentication model is observable. Listed as gated, not as a callable API.

GitHub

Documentation

📖
Authentication
https://raw.githubusercontent.com/api-evangelist/defense-contract-audit-agency/refs/heads/main/authentication/defense-contract-audit-agency-authentication.yml
📖
Documentation
https://www.dcaa.mil/Portals/88/Contractor%20Submission%20Portal%20Instructions%20May%202024.pdf

Other Resources

🔗
OAuthScopes
https://raw.githubusercontent.com/api-evangelist/defense-contract-audit-agency/refs/heads/main/scopes/defense-contract-audit-agency-scopes.yml
🔗
Login
https://csp.dcaa.mil/

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API entry from apis.yml

apis.yml Raw ↑ 
aid: defense-contract-audit-agency:contractor-submission-portal
name: DCAA Contractor Submission Portal (CSP)
description: The portal a defense contractor uses to file, update or withdraw a certified incurred cost
  submission with DCAA. It is a DCAA-operated application on a DCAA host, but every path redirects unauthenticated
  callers to the DoD Procurement Integrated Enterprise Environment (PIEE) authorization endpoint — OAuth
  2.0 authorization code with PKCE (S256), client_id csp, scopes openid and profile. Access requires a
  DoD PIEE account, not a developer credential. No API, no specification and no machine-readable contract
  are published for it; it is recorded here because it is the agency's only write surface and its authentication
  model is observable. Listed as gated, not as a callable API.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/defense-contract-audit-agency.png
humanURL: https://csp.dcaa.mil/
baseURL: https://csp.dcaa.mil
tags:
- Gated
- Authentication
- OpenID Connect
- Incurred Cost
tags_raw:
- Gated
- Authentication
- OpenID Connect
- Incurred Cost Submission
properties:
- type: Authentication
  url: authentication/defense-contract-audit-agency-authentication.yml
- type: OAuthScopes
  url: scopes/defense-contract-audit-agency-scopes.yml
- type: Login
  url: https://csp.dcaa.mil/
- type: Documentation
  url: https://www.dcaa.mil/Portals/88/Contractor%20Submission%20Portal%20Instructions%20May%202024.pdf