Deltek Project-Based ERP API
Deltek project-based ERP REST API for government contractors, professional services, architecture, engineering, and construction (AEC) firms. Enables AI agents to manage project cost accounting and labor charging for government contract compliance automation, handle DCAA (Defense Contract Audit Agency) timesheet compliance and audit trail for federal contractor billing, access project budget and earned value management (EVM) for government program performance reporting, retrieve multi-contract indirect rate allocation for overhead cost distribution automation, manage project revenue recognition and milestone billing for professional services billing, handle subcontractor management and B2G compliance for prime contractor workflows, access proposal management and opportunity tracking for BD pipeline automation, retrieve EVMS (Earned Value Management System) data for DCMA reporting, manage employee time and expense processing for professional services operations, and integrate Deltek with federal acquisition systems, government portals, and AEC platforms.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
GovCon ERP. SOC2, FedRAMP, DCAA, CMMC. OAuth2/API key. US. Federal contract cost and compliance data.
⚡ Reliability
Best When
A US government contractor (DoD, civilian agency), architecture/engineering firm, or professional services company wanting AI agents to automate DCAA-compliant timekeeping, project cost accounting, earned value reporting, and government contract billing.
Avoid When
DCAA COMPLIANT TIMESHEET ACCURACY: Automated timesheet recording must comply with DCAA timekeeping requirements including same-day entry, supervisor approval, and audit trail; automated timesheet creation or modification after the fact creates DCAA false billing risk and potential False Claims Act exposure. FAR/DFARS cost principle compliance — automated cost allocation to government contracts must comply with FAR 31 cost principles; automated allocation of unallowable costs (entertainment, alcohol, lobbying) to government contracts creates False Claims Act liability. ITAR/CUI data handling — automated Deltek project data access for defense contracts handling ITAR-controlled technical data or CUI must comply with DFARS 252.204-7012 and CMMC requirements; automated data access in non-CMMC compliant environment creates DFARS violation. Earned value baseline lock — automated EVM performance baseline changes must follow ANSI EIA-748 EVMS guidelines and DCMA notification requirements for significant variances; unauthorized automated baseline revisions violate EVMS contractual requirements.
Use Cases
- • Processing labor charges from government contract compliance agents
- • Managing earned value from program performance agents
- • Generating project billing from professional services agents
- • Tracking DCAA timesheets from federal contractor agents
Not For
- • Non-project businesses without government contracting or professional services
- • Simple accounting without cost-plus or T&M contract requirements
- • Retail or manufacturing without project-based billing
Interface
Authentication
Deltek uses OAuth 2.0 and API key authentication. REST API with JSON/OData. Herndon, Virginia HQ. Founded 1983. Private (Roper Technologies subsidiary). Government contracting ERP market leader. 30,000+ project-based business customers. Costpoint (enterprise GovCon), Vantagepoint (AEC/PS), GovWin IQ. Competes with Unanet, JAMIS, and BST Global for government contracting ERP.
Pricing
Herndon VA. Roper Technologies subsidiary. Founded 1983. 30,000+ customers. Costpoint (DoD) and Vantagepoint (AEC/PS) products. Government contracting ERP leader.
Agent Metadata
Known Gotchas
- ⚠ DCAA SAME-DAY TIMESHEET ENTRY REQUIREMENT: Automated timesheet creation must be submitted on the day labor is performed; automated backdated timesheet creation or post-fact labor charging to government contracts creates DCAA timekeeping violation and False Claims Act exposure; never automate timesheet submission for prior periods without written DCAA waiver
- ⚠ FAR UNALLOWABLE COST SEPARATION: Automated cost allocation to government contracts must exclude FAR 31.205 unallowable costs; automated allocation of entertainment, lobbying, interest, or alcohol costs to government contract charges creates False Claims Act liability with treble damages
- ⚠ ITAR and CUI data access controls — Deltek project data for DoD contracts handling ITAR technical data or CUI requires CMMC-compliant environment; automated agents accessing Deltek data in non-CMMC-compliant cloud environment violates DFARS 252.204-7012 and creates ITAR export control violation risk
- ⚠ No webhooks — timesheet approval, billing milestone, and cost event notifications require polling; no push notification for DCAA-relevant project accounting events; implement scheduled polling aligned with billing period cadence
- ⚠ Costpoint vs Vantagepoint API differences — Deltek Costpoint (enterprise DoD) and Vantagepoint (AEC/PS) are separate products with different APIs; automation built for Costpoint does not work for Vantagepoint; confirm product before integration
- ⚠ EVM baseline change notification — automated earned value management baseline changes above DCMA threshold (typically 10% cumulative baseline deviation) require DCMA notification; automated baseline revisions without DCMA notification violate EVMS contractual requirements
Alternatives
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Scores are editorial opinions as of 2026-03-07.