MCP server for runtime quality validation of AI agent outputs — hallucination detection, scope compl
MCP server for runtime quality validation of AI agent outputs — hallucination detection, scope compl. Exposed over MCP by the qc mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.
Runtime quality validation for AI agent outputs. Detect hallucinations, enforce scope compliance, and score output quality — all via MCP.
Everything the assistant can do here goes through one of these:
validate_output — Score agent output against configurable criteria: length limits, required keywords, forbidden patterns, and factual claim densitycheck_hallucination_risk — Estimate hallucination likelihood. With source text, checks sentence-level grounding. Without source, flags outputs dense with specific numberscheck_scope_compliance — Validate output against a scope contract — allowed/forbidden topics, word limits, required sectionslog_validation — The log_validation tool exposed by this serverget_failure_patterns — The get_failure_patterns tool exposed by this servergenerate_quality_report — Quality dashboard across all validated agents — no parameters requiredThe server ships on npm as qc-validator-mcp, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Qc's toolset — validate_output, check_hallucination_risk, check_scope_compliance and 3 more — is a fair guide to whether it matches your workflow. It is maintained by mdfifty50-boop; worth a glance at recent repository activity before you build anything load-bearing on it.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| validate_output | Score agent output against configurable criteria: length limits, required keywords, forbidden patterns, and factual claim density. |
| check_hallucination_risk | Estimate hallucination likelihood. With source text, checks sentence-level grounding. Without source, flags outputs dense with specific numbers, dates, and URLs. |
| check_scope_compliance | Validate output against a scope contract — allowed/forbidden topics, word limits, required sections. |
| log_validation | The log_validation tool exposed by this server. |
| get_failure_patterns | The get_failure_patterns tool exposed by this server. |
| generate_quality_report | Quality dashboard across all validated agents — no parameters required. |
### Claude Desktop
```json
{
"mcpServers": {
"qc-validator": {
"command": "npx",
"args": ["qc-validator-mcp"]
}
}
}Configuration as documented by the project. Restart the client after saving.
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