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 Vimalk0703/shipworthy --skill slo-sli-definitiongit clone --depth 1 https://github.com/Vimalk0703/shipworthyWrote 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/vimalk0703/shipworthy/slo-sli-definition)<a href="https://agentmods.dev/skills/vimalk0703/shipworthy/slo-sli-definition"><img src="https://agentmods.dev/badge/skills/vimalk0703/shipworthy/slo-sli-definition/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/vimalk0703/shipworthy/slo-sli-definition"><img src="https://agentmods.dev/badge/skills/vimalk0703/shipworthy/slo-sli-definition.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 | $0.00044 | $0.02549 |
| Opus 5 | $0.00022 | $0.01274 |
| Sonnet 5 | $0.00009 | $0.00510 |
| Haiku 4.5 | $0.00004 | $0.00255 |
Grade A, and why
slo-sli-definition 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 11d 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 — 283 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SLO/SLI Definition
Core Principle
Reliability is a feature. SLOs quantify how reliable a service needs to be, error budgets tell you when to slow down, and burn rate alerts tell you when reliability is degrading faster than your budget allows.
Terminology
| Term | What It Is | Who Defines It | Example |
|---|---|---|---|
| SLI (Service Level Indicator) | A quantitative measure of service behavior | Engineering | 99.2% of requests return 2xx in < 500ms |
| SLO (Service Level Objective) | A target value for an SLI over a time window | Engineering + Product | 99.9% availability over 30 days |
| SLA (Service Level Agreement) | A contract with customers including consequences for failure | Business + Legal | 99.95% uptime or customer gets credits |
| Error Budget | The allowed amount of unreliability (1 - SLO) | Derived from SLO | 0.1% = 43.2 minutes of downtime per 30 days |
Key relationship: SLA >= SLO > SLI measurement. Your SLO should be stricter than your SLA, and your SLI measurement should be honest.
1. SLIs -- What to Measure
Choose SLIs based on what users actually experience. The four golden signals:
Availability
Definition: The proportion of valid requests that are served successfully.
availability = (total_requests - error_requests) / total_requests
What counts as an error:
- HTTP 5xx responses (server errors).
- Timeouts (no response within the timeout budget).
- HTTP 429 responses should NOT count as errors (the server is protecting itself).
- HTTP 4xx responses should NOT count as errors (client mistakes).
Latency
Definition: The proportion of requests served faster than a threshold.
latency_sli = requests_under_threshold / total_requests
Measure at the p50, p95, and p99 percentiles. The SLO is typically on p99 or p95.
Important: Measure latency at the load balancer or API gateway, not inside the application. The user experiences the full round trip.
Throughput
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.
- 11d ago First seen · 283 lines · 44 tokens per session scan A 2f132133a48b
slo-sli-definition is a skill published in the GitHub repository Vimalk0703/shipworthy (7 stars, last pushed 5mo ago), licensed MIT. It adds 44 tokens to every session and 2,549 once invoked, about $0.0002 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 2026-08-31.
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