Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add authzed/authzed-marketplace --skill oso-to-spicedbgit clone --depth 1 https://github.com/authzed/authzed-marketplaceWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/authzed/authzed-marketplace/oso-to-spicedb)<a href="https://agentmods.dev/skills/authzed/authzed-marketplace/oso-to-spicedb"><img src="https://agentmods.dev/badge/skills/authzed/authzed-marketplace/oso-to-spicedb/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/authzed/authzed-marketplace/oso-to-spicedb"><img src="https://agentmods.dev/badge/skills/authzed/authzed-marketplace/oso-to-spicedb.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00019 | $0.03532 |
| Opus 5.5 | $0.00008 | $0.01413 |
| Sonnet 5.5 | $0.00004 | $0.00706 |
| Haiku 4.5 | $0.00002 | $0.00353 |
Grade A, and why
Oso to SpiceDB scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 247 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Oso to SpiceDB
The conversion pack for Oso Cloud. migrating-to-spicedb owns the pipeline, the
gate protocol, and the report formats; this skill supplies the source-specific rules
that pipeline reads, per migrating-to-spicedb/references/pack-contract.md's ten items.
Nothing here restates the framework. If you are looking for how phases sequence, what a
Class A finding is, or what migration-map.json holds, that is the framework skill.
What this pack covers
Oso Cloud -- the hosted (or self-hosted) service: a Polar policy plus facts, queried over the Check API. This is the supported source.
The deprecated osohq/oso library is not covered. The open-source embedded library
(Polar files loaded in-process, host-language classes registered with the runtime) is
marked deprecated by its own repository. Its policies are Polar and much of the policy
mapping below still applies, but its data lives in the application's own objects rather
than as facts, so there is nothing to export and references/data-mapping.md does not
apply. If a project is on the OSS library, say so at the gate and treat the data phase as
a hand-written extraction rather than a conversion.
The shape of the problem, in one paragraph
Oso's declarative core -- actor/resource blocks with roles, permissions,
relations, and shorthand implication rules -- is close enough to Zanzibar that it
translates mechanically. A has_role(User{"alice"}, "steward", Lab{"genomics"}) fact
is a relationship tuple, with the role string doing exactly the job a SpiceDB relation
name does. What does not translate is everything Polar can express beyond that core:
facts with values instead of objects, comparisons between two stored facts, rules with a
variable in the role position, and the local-filtering API that returns SQL. The cost of
an Oso migration is almost never the schema. It is attributes, list endpoints, and the
data-sync obligations the conversion creates.
Detection (pack contract item 1)
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 247 lines · 0 tokens per session scan A f3b1f46f1d6d
Oso to SpiceDB is a skill published in the GitHub repository authzed/authzed-marketplace (2 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 19 tokens to every session and 3,532 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-19.
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