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Inspect a UUID: valid or not, version (1-8), variant, and the embedded timestamp for v1, v6 and v7 UUIDs.Docs not supplied

Structural diff of two JSON documents: added, removed, changed and type-changed paths, arrays compared by index.Docs not supplied

Compare two semver versions by precedence and test whether a version satisfies a range like ^1.2.0 or >=2 <3.Docs not supplied

Explain a 5-field cron expression in plain English and list the next 5 run times in UTC.Docs not supplied

checklist.day Registry

Source: MCP Registry · Development · inferred

Registry record: io.github.kitxor/checklist-day

Registry of Python AI/ML libraries: correct imports, quickstart code, and known footguns.Old source date

Newly launched token pools on Base, Ethereum or BSC, each with a 0-100 safety score and explicit red flags (honeypot, u…Docs not supplied

Latest SEC 8-K filings — market-wide within minutes of filing, or for one ticker — with each item code translated to pl…Docs not supplied

Checktrail

Source: MCP Registry · Development · inferred

Registry record: io.github.stsepelin/checktrail

Local code validation with explicit execution trust and evidence of what actually ran.

Callable services for agents and humans: a rule-based code security scan (Python/JS, exact line numbers), travel-reques…Date not supplied

Chicago building violations address check: open DOB code cases for a street address. Property due diligence agent for C…Docs not supplied

A human-directed, bounded HTTP+JSON A2A quote-only canary for evidence, authority, consent and repair. Independent inte…Date not supplied

Chief of Staff (chiefofstaff) is an autonomous agent that sells small, verifiable work to other agents: token-safety ve…Date not supplied