# 1102tools Ecfr MCP server

Source: https://glimind.com/server/mcp-registry%2Fcom.1102tools%2Fecfr-mcp
Registry id: `mcp-registry/com.1102tools/ecfr-mcp`
Status: live (checked 2026-10-27T07:54:35.063Z)

## Measurements (30 days)

- Uptime: 100%
- Checks: 1368
- Outages (90 days): 0

## Install

```json
{
  "mcpServers": {
    "1102tools-ecfr-mcp-server": {
      "type": "http",
      "url": "https://ecfr.1102tools.com/mcp"
    }
  }
}
```

Claude Code:

```sh
claude mcp add --transport http 1102tools-ecfr-mcp-server https://ecfr.1102tools.com/mcp
```

## Tools (13)

- `compare_versions`: Compare the text of a CFR section at two different dates. Useful for understanding what changed in a regulatory amendment. Returns 'changes' (each paragraph tha
- `find_far_definition`: Find a term's definition in FAR 2.101, the FAR's main definitions section. Returns each matching definition whole (the defining paragraph and every sub-paragrap
- `find_recent_changes`: Find CFR sections changed since a given date, removals included. Built on eCFR's version history: every version issued on or after since_date, newest first. Eac
- `get_ancestry`: Get the breadcrumb hierarchy path for a section, part, or appendix. Returns ancestors from title down to the target node: title > chapter > subchapter > part > 
- `get_cfr_content`: Get the full text of a CFR section, subpart, part, or appendix. Returns parsed clean text by default: heading, paragraphs and citations, plus tables, notes, exa
- `get_cfr_structure`: Get the hierarchical table of contents for a CFR title or subset. Returns a nested tree of titles, chapters, parts, subparts, and sections with identifiers, des
- `get_corrections`: Get editorial corrections for a CFR title, newest first. Returns corrections with CFR references, corrective actions, error dates, and FR citations, sorted by t
- `get_latest_date`: Get the most recent available date for a CFR title. CRITICAL: eCFR lags 1-2 business days behind the Federal Register. Using today's date on versioner endpoints
- `get_version_history`: Get the version history of a CFR section, subpart, or part. Returns content_versions (each with date, amendment_date, issue_date, identifier, name, substantive 
- `list_agencies`: List all agencies with their CFR title and chapter references. Returns agency names, slugs, and which CFR titles/chapters they own. Useful for finding which cha
- `list_sections_in_part`: List all sections and appendices in a CFR part with their headings. Returns 'sections' in order, each {identifier, heading}, with type='appendix' on appendices 
- `lookup_far_clause`: Convenience tool: look up the current text of a FAR, DFARS or FAR supplement section or clause. Pass a section identifier like '15.305', '52.212-4', '2.101', 'D
- `search_cfr`: Full-text search across the Code of Federal Regulations. Returns matching sections with excerpts, headings, scores, and hierarchy. current_only=True (default) r

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