DCAT-US 3.0 catalogs (data.json) of published Semantic Data Charter models: one Dataset per model with the schema cited as describedBy (the data dictionary) and conformsTo by URL and SHA-256, the contact point from declared input. One tool, write_catalog, over the same function the CLI calls; valid…
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"sdc-dcat-us-3-0-projection-sdcdcatus","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
Everything here was measured by our prober or read from a registry. Nothing is self-reported.
No successful checks in the window.
Not distributed through a package registry we index.
| when | check | result | http | latency | detail |
|---|---|---|---|---|---|
| 30 h ago | mcp initialize | failed | 422 | 132 ms | http 422 |
| 8 d ago | mcp initialize | failed | 422 | 117 ms | http 422 |
| 15 d ago | mcp initialize | failed | 422 | 113 ms | http 422 |
| 18 d ago | mcp initialize | failed | 422 | 130 ms | http 422 |
| 20 d ago | mcp initialize | failed | 422 | 122 ms | http 422 |
| 21 d ago | mcp initialize | failed | 422 | 117 ms | http 422 |
| 22 d ago | mcp initialize | failed | 422 | 128 ms | http 422 |
Attributed to the source that supplied each field. Treated as claims, not facts.
DCAT-US 3.0 catalogs (data.json) of published Semantic Data Charter models: one Dataset per model with the schema cited as describedBy (the data dictionary) and conformsTo by URL and SHA-256, the contact point from declared input. One tool, write_catalog, over the same function the CLI calls; validated in the package's CI with GSA's DCAT-US 3.0 JSON Schema at a pinned commit. Read-only apart from the document it returns; no account; the catalog host is fixed at start and no tool takes a URL. Self-hosted MCP server over stdio: pip install sdcdcatus, then run 'sdcdcatus mcp' (or uvx sdcdcatus mcp).
Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.
Every source is kept verbatim. Field changes are logged as events.