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 serac-labs/serac --skill fluent-developmentgit clone --depth 1 https://github.com/serac-labs/seracWrote 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/serac-labs/serac/fluent-development)<a href="https://agentmods.dev/skills/serac-labs/serac/fluent-development"><img src="https://agentmods.dev/badge/skills/serac-labs/serac/fluent-development/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/serac-labs/serac/fluent-development"><img src="https://agentmods.dev/badge/skills/serac-labs/serac/fluent-development.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00077 | $0.02218 |
| Opus 5.5 | $0.00031 | $0.00887 |
| Sonnet 5.5 | $0.00015 | $0.00444 |
| Haiku 4.5 | $0.00008 | $0.00222 |
Grade A, and why
fluent-development 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 — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Fluent (ServiceNow SDK) Development
Fluent is ServiceNow's pro-code model: application metadata as declarative TypeScript, with git as the source of truth instead of the instance. You edit .now.ts files locally, compile them (build), and push the compiled package to an instance (install). The CLI behind the tools is now-sdk from @servicenow/sdk (4.x, Node 20+).
Where these tools run: the
snow_fluent_*tools are local-only — they execute the ServiceNow SDK (now-sdk) on the developer's machine, so they only exist when the MCP server runs locally over stdio. Over a hosted HTTP transport (e.g. a web chat) they are not available, so do not call them; drive the same flow through git + CI instead: commit the project files, trigger the build/deploy pipeline, and follow the workflow runs.
1. Fluent vs the classic snow_* API tools
| Task | Use |
|---|---|
| Build/evolve an app whose definition should live in git | Fluent tools (snow_fluent_*) |
| Data operations (query/create/update records) | API tools (snow_query_table, ...) |
| ITSM/config changes on an existing non-Fluent instance | API tools (e.g. snow_create_business_rule) |
| Metadata types Fluent doesn't cover (see §5) | API tools, or keep as XML in metadata/ |
Fluent changes the definition of an app; the API tools change a live instance directly. Don't mix them for the same artifact: editing a Fluent-managed record via the API gets overwritten on the next install.
2. Project anatomy
now.config.json # { "scope": "x_acme_myapp", "scopeId": "<sys_app sys_id>", "name": "My App" }
package.json # devDeps: @servicenow/sdk, @servicenow/glide
src/fluent/*.now.ts # the Fluent DSL (entry: index.now.ts)
src/fluent/generated/keys.ts # Now.ID registry -> sys_ids. MUST be committed.
src/server/ # server-side code referenced from script: properties
metadata/ # original XML for records not (yet) converted to Fluent
dist/ # build output (gitignored)
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 · 124 lines · 77 tokens per session scan A d7eceee4067d
fluent-development is a skill published in the GitHub repository serac-labs/serac (78 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 77 tokens to every session and 2,218 once invoked, about $0.0003 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 2026-08-30.
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model-context
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sn-safe-write
Change ServiceNow data safely — plan first, apply only after review, verify, and know how to revert. Use whenever a create, update, upsert or delete on an instance is requested.
sn-discover
Map a ServiceNow instance into Markdown (version and counts, custom applications, per-scope tables and artefacts) with the server's own document generator. Use when asked to discover, survey, inventory or document an instance or its custom apps.
sn-drift
Find configuration drift between two ServiceNow instances or against a saved snapshot, or review what an update set will change. Use when comparing dev / test / prod, checking a promotion, or reviewing an update set.
sn-impact
Estimate the blast radius of changing a ServiceNow table, field or script — what references it and what automation runs around it. Use before renaming, deleting or changing a field, table, script include or business rule.