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/microsoft/apm/changeloggit clone --depth 1 https://github.com/microsoft/apmWhat 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 | $0.00273 | $0.00273 |
| Opus 5 | $0.00137 | $0.00137 |
| Sonnet 5 | $0.00055 | $0.00055 |
| Haiku 4.5 | $0.00027 | $0.00027 |
Grade A, and why
apm changelog.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 2d 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.
What it actually says
Changelog Format
This project follows Keep a Changelog and Semantic Versioning.
Structure
- New entries go under
## [Unreleased]. - Released versions use
## [X.Y.Z] - YYYY-MM-DD. - Group entries by type:
Added,Changed,Deprecated,Removed,Fixed,Security.
Entry format
- One line per PR: concise description ending with
(#PR_NUMBER). - Credit external contributors inline:
— by @username (#PR_NUMBER). - Combine related PRs into a single line when they form one logical change:
(#251, #256, #258). - Use backticks for code references: commands, file names, config keys, classes.
Rules
- Every merged PR that changes code, tests, docs, or dependencies must have a changelog entry.
- Do NOT include version-bump or release-machinery PRs (e.g., "chore: bump to vX.Y.Z").
- When releasing, move Unreleased entries into a new versioned section — never delete them.
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.
- 2d ago First seen · 28 lines · 273 tokens per session scan A 1e51ec4c74e8
apm changelog.instructions.md is an instructions file published in the GitHub repository microsoft/apm (3,687 stars, last pushed today), licensed MIT. It adds 273 tokens to every session, about $0.0014 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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