← The evidence ledger
Evidence row 308071
Observed , by probe.mcp/1.
- Kind
- mcp.tools
- About
- endpoint 3dc4faea-7402-41ea-a21d-4b6cf820c79c
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 1f8d33410ca971d5b0e459b3b8af7bbba67429f9fe20d96de4b04f87399f2f30
- Leaf
- 0x32d3b4606e9217b32034ff9a408319f5e2ba7949474ccc4a27a049a4ad54fee7
What was observed
{
"count": 38,
"tools": [
{
"description": "Full metadata for up to 20 arXiv ids: title, authors, abstract, categories, dates, DOI, journal ref, links. Costs $0.001 USDC per call via x402.",
"inputSchema": {
"properties": {
"id": {
"description": "arXiv id(s), comma-separated (e.g. 1706.03762)",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"name": "arxiv__paper"
},
{
"description": "The newest submissions in any arXiv category. Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"category": {
"description": "Category, e.g. math.PR",
"type": "string"
},
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"required": [
"category"
],
"type": "object"
},
"name": "arxiv__recent"
},
{
"description": "The newest arXiv submissions in astro-ph (Astrophysics). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-astro-ph"
},
{
"description": "The newest arXiv submissions in cs.AI (Artificial Intelligence). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-cs-ai"
},
{
"description": "The newest arXiv submissions in cs.CL (Computation and Language (NLP)). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-cs-cl"
},
{
"description": "The newest arXiv submissions in cs.CR (Cryptography and Security). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-cs-cr"
},
{
"description": "The newest arXiv submissions in cs.CV (Computer Vision). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-cs-cv"
},
{
"description": "The newest arXiv submissions in cs.LG (Machine Learning). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-cs-lg"
},
{
"description": "The newest arXiv submissions in cs.RO (Robotics). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-cs-ro"
},
{
"description": "The newest arXiv submissions in econ (Economics). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-econ"
},
{
"description": "The newest arXiv submissions in q-bio (Quantitative Biology). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-q-bio"
},
{
"description": "The newest arXiv submissions in q-fin (Quantitative Finance). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-q-fin"
},
{
"description": "The newest arXiv submissions in quant-ph (Quantum Physics). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-quant-ph"
},
{
"description": "The newest arXiv submissions in stat.ML (Statistics: Machine Learning). Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"limit": {
"description": "Results, max 50 (default 25)",
"type": "integer"
}
},
"type": "object"
},
"name": "arxiv__recent-stat-ml"
},
{
"description": "Search arXiv by keywords, title, author and/or category; sort by relevance or newest. Costs $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"author": {
"description": "Author name",
"type": "string"
},
"category": {
"description": "Category, e.g. cs.CL",
"type": "string"
},
"limit": {
"description": "Results, max 50 (default 20)",
"type": "integer"
},
"q": {
"description": "Keywords (all must match)",
"type": "string"
},
"sort": {
"description": "relevance (default), submitted or updated",
"type": "string"
},
"start": {
"description": "Offset for paging",
"type": "integer"
},
"title": {
"description": "Phrase in the title",
"type": "string"
}
},
"type": "object"
},
"name": "arxiv__search"
},
{
"description": "Title, authors, journal, dates, references count and licence for a DOI. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"doi": {
"description": "DOI",
"type": "string"
}
},
"required": [
"doi"
],
"type": "object"
},
"name": "crossref__doi"
},
{
"description": "Research funders by name, with Funder Registry ids. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"q": {
"description": "Funder",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"name": "crossref__funders"
},
{
"description": "Journal title, publisher and DOI counts by ISSN. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"issn": {
"description": "ISSN",
"type": "string"
}
},
"required": [
"issn"
],
"type": "object"
},
"name": "crossref__journal"
},
{
"description": "Crossref member publishers by name. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"q": {
"description": "Publisher",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"name": "crossref__members"
},
{
"description": "Bibliographic search across Crossref works. Free within the daily allowance, then $0.003 USDC per call via x402.",
"inputSchema": {
"properties": {
"q": {
"description": "Query",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"name": "crossref__search"
},
{
"description": "PubMed citations that are clinical trial reports for a query. A few free samples a day, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"term": {
"description": "Query with [pt] filter",
"type": "string"
}
},
"required": [
"term"
],
"type": "object"
},
"name": "pubmed__clinical-trials-search"
},
{
"description": "Free full-text article ids in PubMed Central. A few free samples a day, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"term": {
"description": "Query",
"type": "string"
}
},
"required": [
"term"
],
"type": "object"
},
"name": "pubmed__pmc-search"
},
{
"description": "PubMed ids matching a query (supports PubMed query syntax). A few free samples a day, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"term": {
"description": "Query",
"type": "string"
}
},
"required": [
"term"
],
"type": "object"
},
"name": "pubmed__search"
},
{
"description": "Title, authors, journal, date and DOI for comma-separated PubMed ids. A few free samples a day, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"id": {
"description": "PMIDs, comma separated",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"name": "pubmed__summary"
},
{
"description": "Turn a free-text affiliation (as printed on a paper) into the matching organisation, with ROR's confidence flag and candidates. Free within the daily allowance, then $0.001 USDC per call via x402.",
"inputSchema": {
"properties": {
"affiliation": {
"description": "Affiliation text",
"type": "string"
}
},
"required": [
"affiliation"
],
"type": "object"
},
"name": "ror__affiliation"
},
{
"description": "Find the organisation for a GRID id, ISNI, Wikidata QID or Crossref Funder ID. Free within the daily allowance, then $0.001 USDC per call via x402.",
"inputSchema": {
"properties": {
"id": {
"description": "GRID, ISNI, Wikidata QID or Crossref Funder ID",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"name": "ror__external-id"
},
{
"description": "Full record: names and aliases, types, status, founding year, location, website, domains, external ids. Free within the daily allowance, then $0.0005 USDC per call via x402.",
"inputSchema": {
"properties": {
"id": {
"description": "ROR id, e.g. 052gg0110 or https://ror.org/052gg0110",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"name": "ror__organisation"
},
{
"description": "Parent, child and related organisations of a ROR record. Free within the daily allowance, then $0.001 USDC per call via x402.",
"inputSchema": {
"properties": {
"id": {
"description": "ROR id, e.g. 052gg0110 or https://ror.org/052gg0110",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"name": "ror__relationships"
},
{
"description": "Find research organisations by name, acronym or keyword, optionally filtered by country and type. Free within the daily allowance, then $0.001 USDC per call via x402.",
"inputSchema": {
"properties": {
"country": {
"description": "2-letter country code",
"type": "string"
},
"q": {
"description": "Name, acronym or keyword",
"type": "string"
},
"type": {
"description": "education, funder, healthcare, company, archive, nonprofit, government, facility, other",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"name": "ror__search"
},
{
"description": "One researcher by OpenAlex id or ORCID. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"id": {
"description": "OpenAlex id or orcid:…",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"name": "scholarly__author"
},
{
"description": "Researchers by name with h-index, works and citation counts. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"search": {
"description": "Author name",
"type": "string"
}
},
"required": [
"search"
],
"type": "object"
},
"name": "scholarly__authors-search"
},
{
"description": "Fast title autocomplete across works. Free within the daily allowance, then $0.001 USDC per call via x402.",
"inputSchema": {
"properties": {
"q": {
"description": "Partial title",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"name": "scholarly__autocomplete"
},
{
"description": "Works that cite a given OpenAlex work id. Free within the daily allowance, then $0.003 USDC per call via x402.",
"inputSchema": {
"properties": {
"work": {
"description": "Filter, e.g. cites:W2919115771",
"type": "string"
}
},
"required": [
"work"
],
"type": "object"
},
"name": "scholarly__citing-works"
},
{
"description": "Universities and research institutions with output stats. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"search": {
"description": "Institution",
"type": "string"
}
},
"required": [
"search"
],
"type": "object"
},
"name": "scholarly__institutions-search"
},
{
"description": "Journals and repositories with impact stats. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"search": {
"description": "Journal",
"type": "string"
}
},
"required": [
"search"
],
"type": "object"
},
"name": "scholarly__sources-search"
},
{
"description": "Research topics and fields. Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"search": {
"description": "Topic",
"type": "string"
}
},
"required": [
"search"
],
"type": "object"
},
"name": "scholarly__topics-search"
},
{
"description": "One work by OpenAlex id (W…) or \"doi:10.…\". Free within the daily allowance, then $0.002 USDC per call via x402.",
"inputSchema": {
"properties": {
"id": {
"description": "OpenAlex id or doi:…",
"type": "string"
}
},
"required": [
"id"
],
"type": "object"
},
"name": "scholarly__work"
},
{
"description": "Full-text search of scholarly works, with citations, authors and open-access links. Free within the daily allowance, then $0.003 USDC per call via x402.",
"inputSchema": {
"properties": {
"search": {
"description": "Query",
"type": "string"
}
},
"required": [
"search"
],
"type": "object"
},
"name": "scholarly__works-search"
}
]
}What the leaf hashes
{"body":"1f8d33410ca971d5b0e459b3b8af7bbba67429f9fe20d96de4b04f87399f2f30","id":308071,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793058043182985,"prev":null,"subject":"3dc4faea-7402-41ea-a21d-4b6cf820c79c","subject_kind":"endpoint"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0x32d466835b3273f87f08c64ef97651ce1c37c440b20cc00b1d00127365256026
- 0x11faaf48f67ed962ca04a8d2e9542d892c32bf61f55be1cce02eea6cd1e74a0f
- 0x0065111245dad96ced527d590f041dc60d0abb6f852ffcd5cbf6652deb0a4215
- 0x912c38f89bc61fb825d92fcab616a2ac10bb155e4c5cc2e964bb86ed4d84f3b9
- 0x871fcf6cb8adf9b4641a7c14c9c62e98f9d2f04cfc4f763aa19a557ea4c165ec
- 0xdbac6a75be526f48729304552bdf511bf4577f95b9e15af2de209e0331a59358
- 0x8f80ce4cdfc561d5369b02be1de0695f656e05390f7db68112fb824c35c5985b
- 0x46b5918ea6ba012a923490feaed5e967c96465b0a135fae366c096bab3ee8550
- 0x0fb78d244a20004e04fbe01ec70f9831d44d86237b0382453ead0323c4df9ae8
- 0xa0ebaa287767d7a753bad9278ae53729c65e45e91f8c870e598e2a5eef743e57
- 0xc99ea26556ddad6b2fde7887de8c0190d3a7c645402227c5a281ba47e02a67e5
- 0x2f4617d7a962f32849050ad5649d9dc4f962fd8618073cfa8519e6f862dfcef8
- 0x08de74b7fb265ddb83e4c673da8a94e5f71829b2e6e7464c71c5138e450f2217
- 0x4338355a835617a26aa0bfcc971e84eb030d84e2aa840e3c8af958921dd080c7
- 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
- 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae