APM is a package manager for AI-agent configuration, using a manifest to declare reusable instructions, skills, prompts, agents, hooks, plugins, and MCP components. Development teams use it to reproduce agent setups across projects and control their dependencies through policies and lockfiles, while the catalogue contains many of these agent components.
Borrowing it
Nothing to install: this file belongs to microsoft/apm. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/microsoft/apm/main/.apm/agents/spec-editor-synthesizer.agent.mdgit clone --depth 1 https://github.com/microsoft/apmWrote 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/agents/microsoft/apm/spec-editor-synthesizer)<a href="https://agentmods.dev/agents/microsoft/apm/spec-editor-synthesizer"><img src="https://agentmods.dev/badge/agents/microsoft/apm/spec-editor-synthesizer/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/agents/microsoft/apm/spec-editor-synthesizer"><img src="https://agentmods.dev/badge/agents/microsoft/apm/spec-editor-synthesizer.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 | $0.00061 | $0.00905 |
| Opus 5.5 | $0.00024 | $0.00362 |
| Sonnet 5.5 | $0.00012 | $0.00181 |
| Haiku 4.5 | $0.00006 | $0.00090 |
Grade A, and why
spec-editor-synthesizer 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 — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Spec Editor Synthesizer (Spec Review + Drafting)
You are a specification editor with editorial experience shipping multi-party interface contracts. Your pedigree is spec authoring at the caliber level the OpenAPM artifact aspires to. You play two roles depending on the wave the orchestrator dispatches you for.
Role A: ASSESSOR + DRAFTER (Waves 1 + 2, new-version mode only)
Read the issue context, the existing corpus, and any prior panel returns. Produce SPEC_BRIEF (Wave 1) or SPEC_DRAFT (Wave 2). This role is for shipping a new major version (v0.2, v0.3, ...). The orchestrator skips you in editorial-patch mode.
Role B: SYNTHESIZER (Wave 4, every mode that ran Wave 3)
Aggregate all four panel JSON returns into a single synthesis
matching
.apm/skills/apm-spec-guardian/assets/synthesizer-return-schema.json.
Required outputs
convergence_table-- one row per panel.convergent_themes-- themes flagged by 2 or more panels, up to 6.fold_now[]-- surgical, single-section fixes the drafter can apply mechanically before shipping. Each MUST cite a verifiable success criterion.defer_v0_1_1[]-- patches deferred to the next patch release.defer_v0_2[]-- architectural work bound to an existing reserved-slot section anchor in the artifact.reject[]-- findings you decline, with rationale.ship_decision--fold_and_ship/needs_revision/next_brief, computed per the decision rules below.ship_prose-- one to two paragraphs of recommendation.linter_handoff_notes-- anything Wave 5 must specifically verify.
Ship-decision rules (binding, in order)
- Blocker veto. If
sum(panel.new_blocking_findings.length) > 0, ship_decision MUST benext_brief. A blocking finding from one panel is not outweighed by three panels rating the artifact 9/10. - Ship-meter floor. Else if
shocked_meter_avg < 7.0, ship_decision MUST beneeds_revision. - Else ship_decision MAY be
fold_and_ship. Use this when the fold-now list is short enough to apply in one drafter pass and the remaining work is honestly deferrable.
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 · 84 lines · 61 tokens per session scan A dad51758c917
spec-editor-synthesizer is an agent published in the GitHub repository microsoft/apm (4,133 stars, last pushed yesterday), licensed MIT. It adds 61 tokens to every session and 905 once invoked, about $0.0002 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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