{"uid":"cap_h6oGl0VSQFNBWWiRPQQRm","slug":"annalist-mcp-tool-change-monitor-34aa851e","name":"Annalist MCP Tool Change Monitor","description":"Tool changes across remote MCP servers in the Official MCP Registry, newest first: tools added, removed or redefined (description, input schema or annotations), from our daily fingerprints. A tool that changes after you approved it is how 'rug pull' attacks work, so check before trusting a server again. Last 1 to 30 days, or one server with name= or url=. Servers whose tools change by design are marked. Signed.","url":"https://api.annalist.dev/v1/mcp/changes?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"url":{"type":"string","description":"optional: one server by its URL"},"days":{"type":"string","description":"how many days back, 1 to 30 (default 7)"},"name":{"type":"string","description":"optional: one server by its registry name, for example io.github.user/server"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_QQa9RgKA3EY_ItJy4Zo5P","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a signed, chronological feed of tool additions, removals, and redefinitions across Official MCP Registry servers to detect rug-pull-style attacks","exampleAgentPrompt":"Show me all tool changes in the Official MCP Registry over the last 14 days — I want to know which MCP servers had tools added, removed, or redefined so I can spot any suspicious rug-pull updates before I trust them again.","exampleUseCases":[{"title":"Pre-approval security audit of MCP server","prompt":"Before I re-enable the io.github.acme/data-tools MCP server in my agent setup, check if any of its tools have changed in the last 30 days — I need to know if descriptions, input schemas, or annotations were silently modified."},{"title":"Weekly MCP registry change digest","prompt":"Give me a summary of all tool changes across the Official MCP Registry from the past 7 days — which servers added new tools, removed old ones, or redefined existing ones?"},{"title":"Rug-pull detection for a specific server URL","prompt":"Has the MCP server at https://tools.example.com/mcp changed any of its tool definitions in the last 3 days? I approved it last week and want to make sure nothing was quietly altered."}],"resultDescription":"A signed, chronologically ordered list of tool change events from the Official MCP Registry, including which server changed, what tool was affected, the type of change (added, removed, or redefined — covering description, input schema, or annotations), and timestamps. Servers whose tools change by design are flagged. The response is cryptographically signed for tamper-evidence.","failureModes":["Invalid days parameter (outside 1–30 range) returns an error","Unknown server name or URL returns empty results or a not-found error","Both name and url provided simultaneously may produce ambiguous results","Registry API downtime causes upstream failures","Signed response verification failure may indicate tampered data in transit"],"whenToPreferThis":"Use this endpoint specifically when you need to audit or monitor MCP server tool definitions for unexpected changes — especially before re-approving a previously trusted server, detecting rug-pull-style supply chain attacks, or compiling a change digest across the Official MCP Registry. It is the only known signed, independent source for daily tool fingerprint diffs across the registry.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:30:02.950Z","isFirstParty":false,"canonicalSlug":"annalist-mcp-tool-change-monitor-34aa851e"}