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 Cratis/AI --skill cratis-chronicle-multi-tenancygit clone --depth 1 https://github.com/Cratis/AIWrote 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/cratis/ai/cratis-chronicle-multi-tenancy)<a href="https://agentmods.dev/skills/cratis/ai/cratis-chronicle-multi-tenancy"><img src="https://agentmods.dev/badge/skills/cratis/ai/cratis-chronicle-multi-tenancy.svg" alt="Measured on agentmods" 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 | $0.00100 | $0.01979 |
| Opus 5 | $0.00050 | $0.00989 |
| Sonnet 5 | $0.00020 | $0.00396 |
| Haiku 4.5 | $0.00010 | $0.00198 |
Grade A, and why
cratis-chronicle-multi-tenancy 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 today.
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 — 199 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Multi-tenancy with Chronicle namespaces
Chronicle implements multi-tenancy through namespaces. A namespace is a logically separate store: its events, observers, and read models run independently, and there is no cross-namespace leakage.
Assume every application is multi-tenant. A deployment serving one organization today is a multi-tenant application with one tenant in it. The second tenant arrives later, and code written as if there would only ever be one is discovered from the far side of a data migration. Whether a deployment configures tenant resolution is an operational choice; whether the code survives a second tenant is not.
Verified product sources
This skill is verified against this exact source:
| Package | Version | Purpose |
|---|---|---|
Cratis.Chronicle |
16.45.2 |
EventStoreNamespaceName, IEventStoreNamespaceResolver, IChronicleClient.GetEventStore |
Cratis.Chronicle.AspNetCore |
16.45.2 |
the header and subdomain namespace resolvers |
Reverify product sources before claiming support for another version.
The concept
| Term | Meaning |
|---|---|
| Namespace | a named isolation boundary within an event store |
| Default namespace | EventStoreNamespaceName.Default, whose value is literally "Default" |
Cratis.Chronicle.EventStoreNamespaceName is a ConceptAs<string> with
implicit conversion from string, a Default value of "Default", and a
NotSet value.
What a namespace actually isolates
Verified against the storage naming and the grain keys, not inferred:
Per namespace:
- event sequences, and therefore sequence numbers;
- observers — projections, reducers, and reactors — with their subscription state, failed partitions, handled counts, and replay contexts;
- read models and their sinks;
- jobs and job steps;
- constraint state, including unique-value indexes and closed streams;
- encryption keys, and therefore the scope of a personal-data erasure;
- identities and changesets.
What ships with it
1 file 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.
- today First seen · 199 lines · 100 tokens per session scan A fab91cbcc0f4
cratis-chronicle-multi-tenancy is a skill published in the GitHub repository Cratis/AI (2 stars, last pushed today), licensed MIT. It adds 100 tokens to every session and 1,979 once invoked, about $0.0005 per session on Opus 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 2026-09-06.
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