Guardrail MCP
https://guardrail-mcp.kadopi.workers.dev/mcp ↗
Description
Deterministic preflight checks for credentials, fund transfers, writes, and prompt overrides.
What our measurements say
Guardrail MCP is a remote MCP server published at guardrail-mcp.kadopi.workers.dev. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 133 ms, placing it among the faster endpoints. It offers a narrow, focused set of 2 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names (get_guardrail_capabilities, assess_action_risk) clearly indicate their purpose.
- No tool overlap; distinct responsibilities between capability retrieval and risk assessment.
Weaknesses
- Descriptions lack explicit use cases (e.g., when to call assess_action_risk vs. get_guardrail_capabilities).
- Parameter 'content' in assess_action_risk is marked optional but lacks context for when it's required.
- No documentation of error scenarios, constraints, or failure modes.
get_guardrail_capabilities— Description doesn't clarify when this tool should be used relative to assess_action_risk.assess_action_risk— Optional 'content' parameter lacks context for relevance/use cases.
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 38ms → warm 47ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
get_guardrail_capabilitiesReturns the scope and safety boundary of this free, deterministic preflight checker.
assess_action_riskRuns a deterministic, read-only preflight check. It never executes the proposed action.
actionstringrequiredcontentstring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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[](https://mcpmetrics.io/servers/io-github-kadopi-guardrail-mcp)<a href="https://mcpmetrics.io/servers/io-github-kadopi-guardrail-mcp"><img src="https://mcpmetrics.io/badge/io.github.kadopi/guardrail-mcp/era.svg" alt="mcpmetrics"></a>You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.
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