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 agentmods add instructions/vllm-project/semantic-router/copilot-instructionsgit clone --depth 1 https://github.com/vllm-project/semantic-routerWhat 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 | $0.00304 | $0.00304 |
| Opus 5 | $0.00152 | $0.00152 |
| Sonnet 5 | $0.00061 | $0.00061 |
| Haiku 4.5 | $0.00030 | $0.00030 |
Grade A, and why
semantic-router copilot-instructions.md 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 yesterday.
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.
What it actually says
GitHub Copilot Instructions
Use the repository harness for reviews and code suggestions.
Start Here
-
Read
AGENTS.mdandtools/agent/docs/README.md. -
Resolve the task before proposing changes:
make agent-report ENV=cpu CHANGED_FILES="path/to/file ..." -
Follow the reported primary skill, context, nearest local
AGENTS.md, and validation commands.
tools/agent/docs/ is the human-readable contract. Manifests, scripts, Make
targets, and workflows are the executable contract. Keep them aligned instead
of restating their rules here.
Review Priorities
Report concrete, file-specific findings in this order:
- correctness, security, and behavior regressions;
- public API or configuration compatibility;
- missing tests or affected E2E coverage;
- module-boundary and hotspot growth;
- drift between documentation and executable rules.
Behavior-visible routing, startup, config, Docker, CLI, or API changes normally
need E2E coverage. Harness changes need make agent-validate. Use the full gate
reported by make agent-report before describing a change as complete.
Keep suggestions within the requested subsystem, preserve DCO sign-off, and do not copy branch notes, AI/tool attribution, credentials, private paths, or test receipts into durable documentation.
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.
- yesterday First seen · 39 lines · 304 tokens per session scan A 97a3d7936fbf
semantic-router copilot-instructions.md is an instructions file published in the GitHub repository vllm-project/semantic-router (5,423 stars, last pushed 2d ago), licensed Apache-2.0. It adds 304 tokens to every session, about $0.0015 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 2026-08-30.
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