{"name":"io.github.stringsofthemind-oss/once","slug":"stringsofthemind-oss-once","title":null,"description":"Execution-safety MCP for AI coding agents protecting consequential writes from unsafe retries.","url":"https://mcp.market/server/stringsofthemind-oss-once","rating":null,"grade":"B","score":80,"certified":false,"status":"active","category":"other","tags":[],"presence":{"score":15,"stars":0,"forks":0,"downloads_week":null,"last_push_at":"2026-09-20T04:57:03.000Z","license":"MIT"},"uptime":null,"claimed":false,"transport":"npm","callable_via_gateway":false,"default_price_micros":0,"repository":"https://github.com/stringsofthemind-oss/once","website":null,"version":"0.1.2","remotes":[],"packages":[{"registryType":"npm","identifier":"@once-agent/mcp","version":"0.1.2","transport":{"type":"stdio"},"environmentVariables":[{"description":"Optional Once Cloud API key. Required only for tools or integrations that contact Once Cloud, such as once_verify_connection.","format":"string","isSecret":true,"name":"ONCE_API_KEY"}]}],"tools":[{"name":"once_apply_protection","description":"Transactionally apply exactly one PATCHABLE Once protection candidate. This modifies source code and creates a backup. Call once_plan_protection first, show the proposed target to the user, and only proceed after explicit approval.","write_action":false,"price_micros":0,"input_schema":null},{"name":"once_assess_project","description":"Use this first when code performs payments, refunds, payouts, bookings, orders, provisioning, database/API writes, consequential messaging, deployments, MCP writes, or other side effects. Scans the project for likely consequential operations without modifying files.","write_action":false,"price_micros":0,"input_schema":null},{"name":"once_explain_risk","description":"Explain why a specific operation may need Once. Use when an agent or developer is deciding whether a payment, refund, booking, order, provisioning action, database/API mutation, webhook, deployment, MCP write, or other external side effect needs execution-safety protection.","write_action":false,"price_micros":0,"input_schema":null},{"name":"once_live_proof","description":"Return the current demonstrated Once proof, public evidence links, and safe claim boundaries. Use when deciding whether Once has evidence for duplicate suppression rather than relying on marketing language.","write_action":false,"price_micros":0,"input_schema":null},{"name":"once_plan_protection","description":"Review candidate operations for Once protection without applying code changes. Use after once_assess_project to understand which call sites are patchable and why.","write_action":false,"price_micros":0,"input_schema":null},{"name":"once_plan_setup","description":"Preview how Once would be configured in a project without applying setup. Use after assessing a project and before allowing an agent to install or configure Once.","write_action":false,"price_micros":0,"input_schema":null},{"name":"once_setup_project","description":"Apply Once setup to a project. This may install dependencies and modify project files. Call once_plan_setup first, present the plan to the user, and only call this tool after explicit approval.","write_action":false,"price_micros":0,"input_schema":null},{"name":"once_verify_connection","description":"Run Once Doctor to verify that ONCE_API_KEY is present, Once Cloud is reachable, the key is accepted, the truth endpoint works, and the safety probe passes. Does not print the API key.","write_action":true,"price_micros":0,"input_schema":null}],"scan":{"score":80,"grade":"B","scanned_at":"2026-09-20T05:01:20.476Z","report":{"scannerVersion":"0.1.9","scannedAt":"2026-09-20T05:01:20.414Z","components":{"code":{"score":25,"max":25,"notes":["3 source files scanned"]},"reliability":{"score":-1,"max":20,"notes":["no gateway calls yet and no remote to probe"]},"poisoning":{"score":-1,"max":15,"notes":["tools not inspected (local package is not executed); not counted"]},"auth":{"score":6,"max":15,"notes":["static API keys via environment variables"]},"maintenance":{"score":15,"max":15,"notes":["last push 0 days ago"]},"identity":{"score":6,"max":10,"notes":["registry namespace matches repository owner"]}},"findings":[],"inputs":{"packages":[{"registryType":"npm","identifier":"@once-agent/mcp","version":"0.1.2","found":true,"license":"MIT","hasInstallScripts":false,"dependencyCount":3,"publishedAt":"2026-09-20T04:40:59.362Z","repositoryUrl":"git+https://github.com/stringsofthemind-oss/once.git"}],"repo":{"found":true,"owner":"stringsofthemind-oss","repo":"once","archived":false,"pushedAt":"2026-09-20T04:57:03Z","stars":0,"forks":0,"openIssues":0,"ownerType":"User","ownerAvatarUrl":"https://avatars.githubusercontent.com/u/325000613?v=4","ownerCreatedAt":"2026-09-04T17:37:47Z","license":"MIT"},"icon":{"url":null,"source":"none"},"presence":{"stars":0,"forks":0,"downloadsWeek":null,"license":"MIT","lastPushAt":"2026-09-20T04:57:03.000Z","score":15}}}},"grade_history":[],"reviews":[]}