eCFR MCP
About
MCP server for the eCFR (Electronic Code of Federal Regulations): current and historical regulatory text updated daily. FAR, DFARS, and all agency FAR supplement lookups, point-in-time comparisons, version history, and definitions. 13 tools.
Details
- Author
- 1102tools
- Downloads
- 394
- Categories
- Other, Developer Tools
Jump to
- 13 tools covering full CFR text and structure
- Current text retrieval for any title, chapter, or section
- Full-text search across the entire CFR
- Version history and side-by-side section comparison
- Point-in-time lookups for historical regulatory text
- FAR-specific clause and definition lookup tools
- No API key required; MIT licensed
Setting up with Highlight
This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:
- Download and install Highlight from highlightai.com/download
- Navigate to the plugins tab and select "Add Custom Plugin"
-
Configure the plugin with the settings below
Plugin Name
eCFR MCPCommand (node, npx, python, etc.)Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
- Enable "Start Automatically" if you want the plugin to start when Highlight launches
From the repository
Install via pip install ecfr-mcp or run directly with uvx ecfr-mcp. Configure the server in your MCP client using JSON (Claude Desktop), TOML (Codex), or platform-specific settings (Gemini CLI, Copilot, VS Code, etc.). No API key is required; simply add the provided configuration block to your client’s MCP server list.
keyword_search
Search GSA CALC+ ceiling rates by keyword. Performs wildcard matching across labor_category, vendor_name, and idv_piid fields. This is the primary search tool for finding rates. Returns matching rate records plus aggregation statistics (wage_stats, percentiles, education breakdown, business size) covering the FULL result set even when individual hits are capped at 10,000. Important notes: - These are NTE (not-to-exceed) ceiling rates, not prices paid - Rates are fully burdened hourly rates from GSA MAS contracts - Data refreshes nightly from vendor price proposal tables - Use P50 from percentiles for median (more accurate than median_price) Filter parameters: - education_level: AA, BA, HS, MA, PHD, TEC (pipe-delimited for OR: 'BA|MA') - experience_min/max: years of experience range - price_min/max: hourly rate range in USD - business_size: 'S' (small) or 'O' (other/large) - security_clearance: 'yes' or 'no' - sin: Special Item Number (e.g., '54151S' for IT Professional Services) - worksite: 'Customer', 'Contractor', or 'Both' ordering: current_price, labor_category, vendor_name, education_level, min_years_experience. sort: 'asc' or 'desc'. exclude: pipe-delimited hit _id values to exclude from results and stats.
exact_search
Exact match search on a specific field. Use suggest_contains() first to discover the exact field value, then pass it here. The API requires exact string matching -- partial matches return 0 results. Fields: labor_category, vendor_name, idv_piid (GSA MAS contract number).
suggest_contains
Discover exact field values via autocomplete/contains matching. Returns aggregation buckets showing matching values and their record counts. Use this BEFORE exact_search() to find the right value string. Minimum 2 characters required for the search term. Example workflow: 1. suggest_contains('vendor_name', 'booz') -> finds 'Booz Allen Hamilton Inc.' 2. exact_search('vendor_name', 'Booz Allen Hamilton Inc.') -> all their rates
filtered_browse
Browse rates with filters only (no search keyword). Useful for market segment statistics: "what do all BA-level rates with 5-15 years experience look like across all of GSA MAS?" Returns rate records plus full aggregation statistics.
igce_benchmark
Get ceiling rate benchmarks for IGCE development. Returns statistical summary for a labor category: count, min, max, avg, median, standard deviation, percentile distribution (P10-P90), education breakdown, and outlier bounds. This is the primary tool for building Independent Government Cost Estimates. The returned statistics represent the market distribution of GSA MAS ceiling rates for comparable labor categories. Reminder: these are ceiling rates (max a contractor can charge), not prices paid. Actual task order rates should be lower per FAR 8.405-2(d).
price_reasonableness_check
Evaluate a proposed hourly rate against GSA ceiling rate distribution. Returns the benchmark statistics plus a positioning analysis: z-score, comparison to median, IQR position, and delta from average. Use this for FAR 15.404-1 price analysis: is the proposed rate within the expected range for comparable labor categories on GSA MAS? A rate above P75 may be high; above P90 warrants scrutiny. A rate below P25 may indicate an unrealistically low offer (potential performance risk).
vendor_rate_card
Get all ceiling rates for a specific vendor. Auto-discovers the exact vendor name via suggest-contains, then pulls all their rate records. Returns labor categories, rates, education levels, experience requirements, SINs, and contract numbers. Pass a partial name (e.g., 'booz' for Booz Allen Hamilton). The tool finds the exact registered name automatically. If the discovery term matches multiple vendors, this tool picks the one with the most rate records and returns a _candidates list so the caller can re-query with a more specific term if needed.
sin_analysis
Get rate distribution and statistics for a specific SIN. Returns rate statistics, education breakdown, business size breakdown, and sample records for a GSA MAS Special Item Number. Common SINs for professional services: - 54151S: IT Professional Services - 541611: Management and Financial Consulting - 541715: Engineering R&D - 541330ENG: Engineering Services - 541512: Computer Systems Design - 611430: Training
Claude Desktop / Cursor
Paste into your MCP client config file to install this server.
{
"mcpServers": {
"ecfr mcp": {
"ecfr": {
"command": "uvx",
"args": [
"--refresh-package",
"ecfr-mcp",
"--from",
"ecfr-mcp",
"ecfr-mcp"
]
}
}
}
}McpServers
{
"ecfr": {
"command": "uvx",
"args": [
"--refresh-package",
"ecfr-mcp",
"--from",
"ecfr-mcp",
"ecfr-mcp"
]
}
}eCFR MCP
A Model Context Protocol server that wraps the eCFR (Electronic Code of Federal Regulations) API as deterministic tool calls. Built for federal contracting officers, attorneys, compliance teams, regulatory affairs analysts, and anyone who needs current or historical text from the FAR, DFARS, agency FAR supplements, or any other CFR title. 13 tools covering full CFR text and structure. Hardened across multiple live audit rounds. MIT licensed. No API key required.Sign in to leave a review
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