← The evidence ledger
Evidence row 778424
Observed , by probe.mcp/1.
- Kind
- mcp.tools
- About
- endpoint aae0aa9b-6e6c-4740-bbf8-39eec03a38b1
- Recorded
- Previous row
- #293443
- Body SHA-256
- 2be98dda047e5d3b52a23fee1010bc12a0ad9aa9c42e9953e13b235fb16c951a
- Leaf
- 0x7270aab97d9246b5a20ad92eee1a1f064e777c9529a107c0e9ca994e6c7a3800
What was observed
{
"count": 8,
"tools": [
{
"description": "Identify what an object is from one to four sizes you measured (an outline, a bore, a pin, a flange) when you do not know its name; use find_geometry when you do. Each size is compared, within tolerance_mm, against every object's overall size in any order and against its exact feature sizes (bores, slots, pins, size-table rows). Results are ranked with all overall sizes matching first, then by the number of matching features, and each says which of your numbers matched where. No match is not an error: widen tolerance_mm (0.2 suits caliper readings of machined parts, 1 suits rough measurements) or file request_object. Read-only, no auth, no charge; same catalog snapshot as find_geometry.",
"inputSchema": {
"properties": {
"category": {
"description": "Exact category from list_categories, to narrow the search.",
"type": "string"
},
"sizes_mm": {
"description": "One to four measured sizes in mm, e.g. [40, 80] for a profile or [10.5] for a bore.",
"items": {
"type": "number"
},
"maxItems": 4,
"minItems": 1,
"type": "array"
},
"tolerance_mm": {
"description": "Allowed difference per size; default 0.5.",
"maximum": 5,
"minimum": 0,
"type": "number"
}
},
"required": [
"sizes_mm"
],
"type": "object"
},
"name": "find_by_dimensions"
},
{
"description": "Search the catalog by name, alias, tag or filter and return object summaries (slug, size, file count). Use it when you know what the thing is called ('M3 heat set insert', 'raspberry pi 5', 'tri clamp ferrule 2in'); use find_by_dimensions when you only have measurements, and list_categories when you need the exact category or group names to filter on. Matching: every query word must appear in the object's name, aliases, tags, category or group, case-insensitive, with '80-40', '80 x 40' and '8040' treated alike; filters combine with AND. An empty result is not an error: it means no object matched every word, so retry with fewer or different words before filing request_object. Read-only against a catalog snapshot that changes only when the site publishes (version in list_categories); no auth, no rate limit beyond the host's, results are stable for identical input.",
"inputSchema": {
"properties": {
"category": {
"description": "Exact category name from list_categories.",
"type": "string"
},
"free_only": {
"description": "Only objects with free files.",
"type": "boolean"
},
"group": {
"description": "Exact group name within the category, from list_categories.",
"type": "string"
},
"kind": {
"description": "modern/vintage: a product; standard: a part defined by a published standard; hardware: a generated part with free files.",
"enum": [
"modern",
"vintage",
"standard",
"hardware"
],
"type": "string"
},
"les_only": {
"description": "Only parts used in Long Earth Society builds.",
"type": "boolean"
},
"limit": {
"description": "Page size; default 20.",
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"offset": {
"description": "Start index; pass next_offset from the previous page.",
"minimum": 0,
"type": "integer"
},
"query": {
"description": "Keywords; omit to list by filters alone.",
"type": "string"
},
"year": {
"description": "Release year for products: '2023', '2020s' or '2010-2019'. Objects with no year are excluded when set.",
"type": "string"
}
},
"type": "object"
},
"name": "find_geometry"
},
{
"description": "Return the contents of one free file so the geometry can be read or modified directly: STEP and DXF as UTF-8 text, STL as base64. Units are millimetres, true size. Use it after get_free_files gives the file name and the content itself is needed; use get_free_files when a download URL is enough, which is cheaper for large files. Files over 600 KB are not inlined: the response carries inlined=false, size_bytes and the URL to fetch instead. An unknown file name is an error that lists the valid names. Read-only, no auth, no charge.",
"inputSchema": {
"properties": {
"file": {
"description": "A file name exactly as get_free_files lists it, e.g. '4080-100'.",
"type": "string"
},
"format": {
"description": "Default step. DXF exists only for 2D sections such as extrusion profiles.",
"enum": [
"step",
"dxf",
"stl"
],
"type": "string"
},
"object": {
"description": "Object slug as returned by find_geometry or find_by_dimensions, e.g. '4080-aluminum-extrusion'. An exact object name or alias also resolves; anything else is an error with a hint to search first.",
"type": "string"
}
},
"required": [
"object",
"file"
],
"type": "object"
},
"name": "get_file_content"
},
{
"description": "Return only the mating features of one object: each hole, pin, pocket, slot or socket that meets another part, with its exact size, what it mates with, and its fit class (press, slide, run, socket, clamp, designed). Use it before designing or printing a part that must fit this object, or when get_geometry's full sheet is more than needed; the same features also come with get_free_files. Every size is exact with no clearance: add your process allowance to press, slide, run and socket features; designed and clamp features are already the final gap and stay as drawn. An object with no mating features returns an empty list, not an error. Read-only, no auth.",
"inputSchema": {
"properties": {
"object": {
"description": "Object slug as returned by find_geometry or find_by_dimensions, e.g. '4080-aluminum-extrusion'. An exact object name or alias also resolves; anything else is an error with a hint to search first.",
"type": "string"
}
},
"required": [
"object"
],
"type": "object"
},
"name": "get_fits"
},
{
"description": "List the direct download URLs of one object's free STEP and STL files (and DXF where a 2D profile exists), with the license to credit. Use it when files are wanted rather than dimensions (get_geometry) or file contents (get_file_content). Objects whose files are a sold Xem design pack return no free files but a note with the x402 and card prices; an object with no files at all returns an empty list and points to its public sources. Neither is an error. URLs are plain HTTPS downloads that need no auth and can be fetched directly; free files are CC BY 4.0 or the Xem Studio Design License as stated in license. Read-only, no charge.",
"inputSchema": {
"properties": {
"filter": {
"description": "Keep only files whose name or note contains this text, e.g. 'm3x10' or '2in'.",
"type": "string"
},
"object": {
"description": "Object slug as returned by find_geometry or find_by_dimensions, e.g. '4080-aluminum-extrusion'. An exact object name or alias also resolves; anything else is an error with a hint to search first.",
"type": "string"
}
},
"required": [
"object"
],
"type": "object"
},
"name": "get_free_files"
},
{
"description": "Read everything the catalog knows about one object: overall size, holes and features, notes, size tables, mating features, related objects, FAQ, and every public CAD source with its license. Use it to answer how big something is, where its holes are, what it is made for, or where its CAD comes from. It returns no download links (get_free_files) and no file contents (get_file_content); use get_fits when only the mating features are needed, since this sheet is long. Sizes are exact nominal values with no tolerance added. The response says whether free files exist and, for the few sold Xem design packs, lists paid_offers with prices; nothing is ever charged by this tool. An unknown object is an error with a hint to search first. Read-only, no auth. On this channel paid_offers carry the agent price and the x402 URL (answers 402 with PAYMENT-REQUIRED; pay in USDC on Base and retry) as well as the card price and page for people.",
"inputSchema": {
"properties": {
"object": {
"description": "Object slug as returned by find_geometry or find_by_dimensions, e.g. '4080-aluminum-extrusion'. An exact object name or alias also resolves; anything else is an error with a hint to search first.",
"type": "string"
}
},
"required": [
"object"
],
"type": "object"
},
"name": "get_geometry"
},
{
"description": "Return the whole category tree: every category, the groups inside it, object counts, and the catalog version. Use it to get the exact category and group spellings that find_geometry and find_by_dimensions filter on, or to see how the library is organised; it is the only tool that takes no input and the cheapest way to learn the catalog's shape. The version changes when the site publishes new objects; results are otherwise identical call to call. Read-only, no auth.",
"inputSchema": {
"properties": {},
"type": "object"
},
"name": "list_categories"
},
{
"description": "File a request for an object that is not in the library so it can be added; it is the only tool here that writes anything. Use it only after find_geometry and find_by_dimensions found nothing suitable; do not use it to ask questions or to request changes to existing objects. Each call stores exactly one new request in the owner's private inbox and nothing is published, so calling twice files two requests. Stored: the text, the optional contact, the time and the client type; no IP address. There is no reply unless a contact is given. The site accepts at most 300 requests a day across all callers; beyond that the call returns an error and nothing is stored.",
"inputSchema": {
"properties": {
"contact": {
"description": "Email or handle for a reply; include only if the person asked to be contacted.",
"maxLength": 200,
"type": "string"
},
"text": {
"description": "Plain description: exact model or part number if known, what it must fit or mate with, which features matter, and any sizes already known.",
"maxLength": 4000,
"minLength": 3,
"type": "string"
}
},
"required": [
"text"
],
"type": "object"
},
"name": "request_object"
}
]
}What the leaf hashes
{"body":"2be98dda047e5d3b52a23fee1010bc12a0ad9aa9c42e9953e13b235fb16c951a","id":778424,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793198604824694,"prev":293443,"subject":"aae0aa9b-6e6c-4740-bbf8-39eec03a38b1","subject_kind":"endpoint"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (231336 rows).
- 0x727087351036c7bf425688e718c98d00bed07c84af8f417c07f19fece0d0b693
- 0xcbb3c1f9fd81ab35c2b511be5cf636a8fd8fc1cbc897250f3e5d625a2a9fe914
- 0x0df874f2ee9feb60c3fee19e37f670c79c3c04ccf77de44c5909660889f57254
- 0x38ff5f261c8ad23540ffc7e936ae7f939ae2f637c88deb3d60ad32a0ee0839ef
- 0x35c5b8cf19bd468ea31975b4697b629b6dc344baad252d78c370adaff04a7531
- 0xb11792d73038969b3fbfb23e4758d820fc4e548590432f5e3b7f6918701ca7ac
- 0x36791add5529bb290d851a6b83dc4e63c87f99e3c6532b5d114102427fb45294
- 0x0cfec198e5df271424a4b55f3490f7533ccd64627be6c71e6f5970986e8eb559
- 0x0073eb4e2df2c754227f5b297f08e03c598eefbcbfae6f3c61de17d20cf65404
- 0xd2673d0a0a723a4abb4043ba1da3f9af6a12fe788d37f88e450442123ae6a503
- 0x005ff2d495a7321cfc489998101090cb6408bc481f6a7551ff97da7f6d8ad65a
- 0x55404c6b19de93ae884408098db6f6cd1ae6d4128eae33fdb7a078d6eb426855
- 0x804388c3a016ba462c83765e8caa94369f82e8575f22ed06fa23d3c116a23fd0
- 0x13a2df73da081eeb4e6752fd2a3d176d9f2a8d2dd01b46f18b266eb7116ace2f
- 0xab4e84d781dccd579dcf5c47a356a4a2e6cac58a2aefdf3543a3fa15238fa4db
- 0x74cf00e07b52415c2184cf20be69d195ed2725497a6892c2f3e449497c17d0ec
- 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
- 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f
- Day root
- 0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e
- Chained
- 0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be
- Published
- On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae