{"$schema":"https://wellknown.network/schemas/agent-record-v1.json","schemaVersion":"1","id":"ag_kvq54vmyqdz4","handle":"smartfin","url":"https://wellknown.network/agents/smartfin","links":{"self":"https://wellknown.network/agents/smartfin/record.json","html":"https://wellknown.network/agents/smartfin","markdown":"https://wellknown.network/agents/smartfin/record.md","api":"https://wellknown.network/api/v1/agents/smartfin","status":"https://wellknown.network/api/v1/agents/smartfin/status","claim":"https://wellknown.network/agents/smartfin/claim","claimApi":"https://wellknown.network/api/v1/claims","claimDescriptor":"https://wellknown.network/agents/smartfin/claim.json","badge":"https://wellknown.network/agents/smartfin/badge.svg","openapi":"https://wellknown.network/openapi.json","history":"https://wellknown.network/api/v1/agents/smartfin/history","tools":"https://wellknown.network/api/v1/agents/smartfin/tools"},"ard":{"identifier":"urn:air:smartfin.fyi:server:smartfin","type":"application/mcp-server-card+json"},"kind":"mcp_server","declared":{"name":"SmartFin","summary":"Backtest S&P 500 stocks and ETFs on real prices, plus loan, savings, FIRE and retirement tools.","description":"Backtest S&P 500 stocks and ETFs on real prices, plus loan, savings, FIRE and retirement tools.","publisher":{"name":"fyi.smartfin","url":null},"homepage":"https://smartfin.fyi","repository":null,"version":"3.0.0","license":null,"protocols":["mcp"],"tags":[],"pricing":null,"endpoints":[{"url":"https://smartfin.fyi/mcp","type":"mcp_streamable_http","auth":null,"probeable":true}],"skills":null,"tools":null,"extra":{"updatedAt":"2026-09-29T07:03:22.831828Z","publishedAt":"2026-09-29T07:03:22.831828Z","registryName":"fyi.smartfin/smartfin"},"attribution":{"kind":"mcp_registry","name":"mcp_registry","summary":"mcp_registry","version":"mcp_registry","description":"mcp_registry","homepageUrl":"mcp_registry","publisherName":"mcp_registry"}},"derived":{"capabilities":[{"slug":"commerce.payments","name":"Payments","confidence":1,"provenance":"derived"},{"slug":"finance.markets","name":"Markets & Trading","confidence":0.9,"provenance":"derived"},{"slug":"dev.docs-lookup","name":"Documentation Lookup","confidence":0.54,"provenance":"derived"}],"categories":["commerce","dev","finance"],"language":"en"},"observed":{"status":"live","statusReason":"Responded 5h ago.","lastOkAt":"2026-10-11T04:26:16.114Z","lastProbedAt":"2026-10-11T04:26:16.114Z","statusComputedAt":"2026-10-11T04:26:58.454Z","reliability30d":{"probes":39,"successRate":1,"p50Ms":273,"basis":"service","measures":{"availability":"availability","latency":"response time","tools":"tool surface observed","summary":"Checks reached the service itself."},"checks":{"total":39,"ok":39,"authBoundaryOk":0,"serviceOk":39,"note":"Counted from the observation rows for the window, checks of the server only (HTTP, A2A card, MCP initialize). ok = authBoundaryOk + serviceOk. `probes` is the sum of daily rollups and includes registry checks, so it can differ from `total`."}},"latestObservations":[{"at":"2026-10-11T04:26:16.114Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":276,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-10T22:22:13.901Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":133,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-10T16:32:52.731Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":128,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-10T10:27:41.060Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":167,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-10T03:26:03.138Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":135,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T21:26:29.418Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":145,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T14:32:02.444Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":182,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T08:27:45.446Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":579,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-09T01:25:17.655Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":132,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}},{"at":"2026-10-08T19:24:28.966Z","kind":"mcp_initialize","ok":true,"httpStatus":200,"latencyMs":464,"error":null,"detail":{"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"toolCount":9,"toolsHash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","serverName":"smartfin","capabilities":["tools"],"serverVersion":"3.0.0","protocolVersion":"2025-06-18"}}],"tools":[{"name":"smartfin_compare_investment_strategies","description":"Runs one amount through three ways of buying the same US stock or index ETF over a chosen period, on real daily closing prices (adjusted for splits and reinvest"},{"name":"smartfin_calculate_investment_return","description":"What an amount invested in a US stock or index ETF became over a past period under one strategy: lump_sum (all on the first trading day), monthly (spread on the"},{"name":"smartfin_compare_time_periods","description":"What a fixed amount in a US stock or index ETF became across reference periods ending today (or on as_of_date): since 2000, since the dot-com peak (24 Mar 2000)"},{"name":"smartfin_calculate_loan_payment","description":"Monthly payment, total interest and total paid for a fixed-rate loan with monthly payments: mortgage, car, student or personal loan. Give either loan_amount, or"},{"name":"smartfin_project_savings_growth","description":"Future balance of savings or an investment growing at a fixed yearly rate, with optional monthly contributions and a chosen compounding frequency. Returns the b"},{"name":"smartfin_calculate_inflation_impact","description":"What an amount will be worth in today's money after years of inflation at a fixed yearly rate, and what something costing that amount today will cost then. Use "},{"name":"smartfin_calculate_fire_number","description":"Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a withdrawal-rate assumption. Each year savings grow at an as"},{"name":"smartfin_calculate_retirement_withdrawal","description":"Works the way SmartFin's withdrawal calculator does, with withdrawals monthly, quarterly or annually and the balance earning a yearly return between them. how_l"},{"name":"smartfin_get_embed_code","description":"The HTML to put one of SmartFin's free calculators on a website the user runs: a blog post, a class or library page, a client resources page. One iframe line, f"}],"package":null,"toolSurface":{"id":"ts_xh4sm7c6ztbu","endpointId":"ep_rkqwu7v2p2se","hash":"d60f22e54179324077d7424da2e790189332b1fec53d01e057579dcb2b95ac5a","toolCount":9,"serverName":"smartfin","serverVersion":"3.0.0","protocolVersion":"2025-06-18","firstSeenAt":"2026-10-06T18:26:33.248Z","lastSeenAt":"2026-10-11T04:26:16.094Z","observations":18,"toolNames":["smartfin_compare_investment_strategies","smartfin_calculate_investment_return","smartfin_compare_time_periods","smartfin_calculate_loan_payment","smartfin_project_savings_growth","smartfin_calculate_inflation_impact","smartfin_calculate_fire_number","smartfin_calculate_retirement_withdrawal","smartfin_get_embed_code"],"distinctSurfaces":2},"endpointFacts":[{"id":"ep_rkqwu7v2p2se","url":"https://smartfin.fyi/mcp","type":"mcp_streamable_http","factsCheckedAt":"2026-10-10T10:27:41.062Z","auth":{"observedAt":"2026-10-10T10:27:41.081Z","authRequired":false,"scheme":null,"resourceMetadata":null,"authorizationServer":null,"conformance":{"dpop":false,"rfc8414":false,"rfc9728":false,"pkceS256":false,"clientIdMetadataDocument":false,"dynamicClientRegistration":false}},"tls":{"observedAt":"2026-10-10T10:27:41.107Z","protocol":"TLSv1.3","chainValid":true,"chainError":null,"hostMatches":true,"subject":"smartfin.fyi","issuer":{"commonName":"YR2","organization":"Let's Encrypt"},"validFrom":"2026-09-01T15:09:21.000Z","validTo":"2026-11-30T15:09:20.000Z","daysToExpiry":50,"sanCount":1,"fingerprint256":"9B:DB:13:6F:57:D4:2F:9B:01:1E:B3:2E:9B:F4:1A:D9:2E:5F:80:F8:85:60:A3:18:F0:DF:A4:55:18:A4:38:EB"}}]},"verification":{"claimed":false,"claimedAt":null,"proofs":[]},"provenance":{"sources":[{"source":"mcp_registry","key":"fyi.smartfin/smartfin","url":"https://registry.modelcontextprotocol.io/v0/servers/fyi.smartfin%2Fsmartfin","firstSeenAt":"2026-09-30T22:19:20.817Z","fetchedAt":"2026-10-09T15:19:38.883Z","normalizedAt":"2026-10-09T15:19:38.883Z"}]},"firstSeenAt":"2026-09-30T22:19:20.817Z","updatedAt":"2026-10-11T04:28:13.002Z"}