Culprit
UnclaimedSuperpowers your agent's debugging: what introduced this bug, and is my fix actually complete? Deterministic, offline, read-only, MCP-native.
Set up this server
01 / Choose your client
02 / Before you connect
Authentication is not specified. Check the project instructions before connecting.
Project instructions03 / Add the configuration
claude mcp add --transport stdio 'culprit' -- 'uvx' '--from' 'culprit[mcp]' 'culprit-mcp'04 / Check it in your client
Open your client’s MCP settings and confirm the server connects and lists its tools. A copied configuration does not confirm a working connection.
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11 of 11 tools
Documented tools (11)
From project documentation. A server handshake does not verify each tool’s description or behavior.
analyze
Full RCA in one call: classify, suspects or blast radius, risk, test impact
check_completeness
Call sites of the changed symbol the fix did not touch
classify_change
Bugfix vs feature, with evidence
find_suspects
Rank the commits that introduced the bug
from_trace
RCA straight from a stack trace, no diff or PR needed
get_blast_radius
Feature impact: dependents, covering tests, high-risk files
get_evolution
Per-commit history of the buggy lines via git log -L
get_intent
The introducing commit's message, linked PR, referenced issues
get_risk_score
QA gate score (0 to 100, low/medium/high) with contributing factors
get_test_impact
Minimal test set to run for this change
verify_fix
Is this diff safe to commit? complete / partial / risky, plus the missed call sites
Tool change history
FAQ
Questions about Culprit MCP Server
- How do I connect Culprit MCP Server to Claude?
- Run `claude mcp add culprit -- uvx --from culprit[mcp] culprit-mcp` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.
- Is Culprit MCP Server free?
- The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.
- What can Culprit MCP Server do?
- Culprit MCP Server documents 11 tools to the agent, including analyze, check_completeness, classify_change. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.