# FitCard > Which size to buy in a men's shirt, from shirts he already owns that fit. Real garment measurements. - name: ai.fitcard/fitcard - version: 1.0.1 - connection class: R0 (autonomous) - trust: 82/100 flags: no-repository - quality: 86/100 (good) - owner: not claimed - descriptor: https://api.protogrid.dev/v1/servers/ai.fitcard%2Ffitcard - tools: https://api.protogrid.dev/v1/servers/ai.fitcard%2Ffitcard/tools **An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe. ## Connection (mcpServers) ```json { "mcpServers": { "fitcard": { "type": "http", "url": "https://fitcard.ai/mcp" } } } ``` ## Trust - hygiene: 80 - liveness: 98 - freshness: 100 - provenance: 55 - drivers: +dns-namespace +website +reachable +uptime-95% +updated-11d-ago -no-repository - Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. ## Quality 86/100 (good) ### protocol: 75 (weight 25) - warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28 - n/a `protocol.stateless`: only applies to 2026-07-28 servers - pass `protocol.transport`: streamable HTTP - n/a `protocol.list_ttl`: only applies to 2026-07-28 servers ### authorization: n/a (weight 15) - n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth - n/a `auth.secret_in_url`: no templated URL ### tool hygiene: 88 (weight 30) - pass `tools.descriptions`: every tool has a description - pass `tools.description_length`: descriptions are concise - pass `tools.schemas`: every tool has an object input schema - pass `tools.annotations`: 3 of 3 tools declare readOnlyHint or destructiveHint - fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: size_me (idempotentHint); what_to_buy (idempotentHint); shirt_measurements (idempotentHint) - pass `tools.token_cost`: about 1,280 tokens to load every tool - pass `tools.api_dump`: tools are not a one-to-one API dump - pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations ### stability: 100 (weight 15) - pass `stability.changes`: 4 tool changes in 30 days - pass `stability.rug_pull`: no tool changed its meaning under the same name - pass `stability.new_links`: no tool change named a new site ### dependencies: n/a (weight 15) - n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package - tools: 3, about 1,280 tokens to load them all - tool set hash: 637041553f0282532de71bd781fd2277 - tools last changed: 2026-11-03T07:43:33.545Z - badge: [![protogrid quality](https://protogrid.dev/badge/ai.fitcard/fitcard.svg)](https://protogrid.dev/servers/ai.fitcard/fitcard) - Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. ### Tool changes - 2026-11-03 `shirt_measurements` changed (annotations) - 2026-11-03 `what_to_buy` changed (description, inputSchema, annotations) - before: Builds his FitCard from the shirts he owns and returns the shirts that will fit him, each in the right size, with a buy link. Also returns a link to his full card on fitcard.ai. Give each shirt in exactly the size listed; a "snugger" or "roomier" note describes how that size fits, not a reason to size up or down. - after: Builds his FitCard from the shirts he owns and returns the shirts that will fit him, each in the right size, with a buy link. Also returns a link to his full card on fitcard.ai. Each size already accounts for his shirts and the fabric; a "snugger" or "roomier" note describes how that size fits. - 2026-11-03 `size_me` changed (description, inputSchema, annotations) - before: Recommends a size in one shirt for this man, from the shirts he already owns that fit. Returns the size, why (in terms of his own shirts), how it will fit, and a confidence. Tell him exactly the size it gives: it already accounts for his shirts, the fabric and the cut, so don't suggest a different size. - after: Recommends a size in one shirt for this man, from the shirts he already owns that fit. Returns the size, why (in terms of his own shirts), how it will fit, and a confidence. The size already accounts for his shirts, the fabric (including dryer shrinkage) and the cut. - 2026-11-03 `what_to_buy` changed (description) - before: Builds his Fit Card from the shirts he owns and returns the shirts that will fit him, each in the right size, with a buy link. Also returns a link to his full card on fitcard.ai. Give each shirt in exactly the size listed; a "snugger" or "roomier" note describes how that size fits, not a reason to size up or down. - after: Builds his FitCard from the shirts he owns and returns the shirts that will fit him, each in the right size, with a buy link. Also returns a link to his full card on fitcard.ai. Give each shirt in exactly the size listed; a "snugger" or "roomier" note describes how that size fits, not a reason to size up or down. Full history: https://api.protogrid.dev/v1/servers/ai.fitcard%2Ffitcard/changes ## Remotes - https://fitcard.ai/mcp (streamable-http, auth none, reachable true, uptime30d 0.95454544) ## Packages _none_ ## Tools (3) - `shirt_measurements`: The real garment measurements of a shirt (chest all the way around and length, in inches) in each size, from the brand's own chart or other checked sources. Not a body-size chart. - `size_me`: Recommends a size in one shirt for this man, from the shirts he already owns that fit. Returns the size, why (in terms of his own shirts), how it will fit, and a confidence. The size already accounts for his shirts, the fabric (including dryer shrinkage) and the cut. - `what_to_buy`: Builds his FitCard from the shirts he owns and returns the shirts that will fit him, each in the right size, with a buy link. Also returns a link to his full card on fitcard.ai. Each size already accounts for his shirts and the fabric; a "snugger" or "roomier" note describes how that size fits.