sparq-org/sparq · skills/usage-control-policy/SKILL.md

usage-control-policy skillA

usage-control-policy is agent-read markdown (skill) from sparq-org/sparq: Evaluate W3C ODRL 2.2 usage-control policies over RDF with the opt-in sparq-policy crate — parse an ODRL Set/Offer/Agreement into a typed Policy of Permission/Prohibition rules (action, target, assignee, Constraint, Duty), then evaluate an access Request to a fail-closed ALLOW/DENY Decision. Use when gating a query/asset by purpose, recipient, time window, count, or a duty obligation; when mapping ODRL to the sparq-solid WAC/ACP allow-deny model; or when wiring usage control above access control.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add sparq-org/sparq/usage-control-policy@git:20260903.1a63aa7
Exact content
mdr add sparq-org/sparq/usage-control-policy@sha256:4ab8bd82a0d130b8

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_lkrvprhkguyzticf.svg)](https://markdownregistry.com/a/art_lkrvprhkguyzticf)

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Versions

versioncommittedcommitsizeaudit
git:20260903.1a63aa7 latest2026-09-03 1a63aa7 76,737 BA view · diff
git:20260802.ba567462026-08-02 ba56746 76,733 BA view · diff
git:20260726.cdecad02026-07-26 cdecad0 71,445 BA view · diff
git:20260726.b3ecbc42026-07-26 b3ecbc4 70,636 BA view · diff
git:20260726.785edb12026-07-26 785edb1 69,972 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (76737 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

sparq-org/sparq · 10 stars · license MIT · pushed 2026-09-07 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_lkrvprhkguyzticf
GET https://markdownregistry.com/api/v1/resolve?ref=sparq-org/sparq/usage-control-policy
GET https://markdownregistry.com/api/v1/blob/4ab8bd82a0d130b829e9c65c06b21d95a192a2f2024b47c2b746dd4758102026