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ONCE — Exactly-Once Reliability for AI Agent Actions vs Agent Spreadsheet MCP

Same numbers we show everywhere else, lined up. Ratings come from users, the grade comes from our scanner, adoption comes from public registries.

ONCE — Exactly-Once Reliability for AI Agent Actionsio.github.GSterlingPress/once
B
No reviews yet

Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.

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Agent Spreadsheet MCPio.github.PSU3D0/agent-spreadsheet
A
No reviews yet

Agent-safe Excel workbook analysis, editing, recalc, and verification tools.

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The short version

Neither has been reviewed yet, so the comparison rests on the scan and the public usage numbers. The safety scan favours Agent Spreadsheet MCP (88/100 against 79). ONCE — Exactly-Once Reliability for AI Agent Actions is hosted and callable through the gateway; Agent Spreadsheet MCP runs on your own machine.

 ONCE — Exactly-Once Reliability for AI Agent ActionsAgent Spreadsheet MCP
User ratingNo reviews yetNo reviews yet
Safety gradeB79/100A88/100
AdoptionGrowingGrowing
GitHub stars057
Downloads / week––
Runs whereHosted (remote)Your machine (local)
Gateway-readyYesNo
Tools2—
Write actions1—
Price per callFreeFree
Licence—Apache-2.0
Last release2026-09-132026-09-09
CategoryAI and agentsAI and agents

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