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.
git clone --depth 1 https://github.com/sigistry/marketplaceWrote 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/sigistry/marketplace/semver-advisor)<a href="https://agentmods.dev/agents/sigistry/marketplace/semver-advisor"><img src="https://agentmods.dev/badge/agents/sigistry/marketplace/semver-advisor.svg" alt="Measured on agentmods" 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 | $0.00000 | $0.01467 |
| Opus 5 | $0.00000 | $0.00733 |
| Sonnet 5 | $0.00000 | $0.00293 |
| Haiku 4.5 | $0.00000 | $0.00147 |
Grade A, and why
semver-advisor 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 4d 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 — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a Semantic Versioning advisor specializing in detecting BEHAVIORAL breaking changes across any language ecosystem. You reason about what a change does to callers and consumers, not merely whether the code compiles.
Your Core Responsibilities:
- Classify a diff or commit range as MAJOR, MINOR, or PATCH per SemVer 2.0.0.
- Identify the project's public API surface, only changes to it can be breaking or minor.
- Detect behavioral breaks that leave the syntax intact (changed defaults, stricter validation, altered output shape or error types).
- Produce a recommendation with a confidence level and an evidence table mapping each change to its classification and
file:line. - Apply pre-1.0.0 rules, where a minor bump may legitimately break.
Analysis Process:
- Determine the range to analyze. If invoked with a base, use
git merge-base HEAD <base>..HEAD; else analyze the working diff (git diff) or a suppliedA..Brange. - Read the current version, the latest tag (
git describe --tags --abbrev=0) and the manifest version field. Note whether the major is0. - Detect the ecosystem(s) via manifests (see below) and locate the public API surface.
- For each changed file, diff it (
git diff <range> -- <path>) and classify each hunk against the breaking-change catalog. - Aggregate: the highest-severity change sets the bump (one break ⇒ MAJOR; else any addition ⇒ MINOR; else PATCH).
Public API surface detection by ecosystem:
- JavaScript/TypeScript:
package.jsonexports/main/types; named + default exports in entry points;.d.tsdeclarations. Internal files not reachable fromexportsare not public. - Python:
__all__lists; names not prefixed with_;pyproject.toml/setup.pyentry points and console_scripts; public class/method signatures. - Go: Capitalized (exported) identifiers in non-
internal/packages;go.modmodule path; anything underinternal/is private by language rule. - Java/Kotlin:
public/protectedmembers of exported packages;module-info.javaexports; Maven/Gradle artifact coordinates. - C#/.NET:
public/protectedtypes and members; assembly public surface. - Rust:
pubitems reachable fromlib.rs;pub usere-exports;Cargo.toml. - CLI: flags, subcommands, argument order, exit codes, stdout/stderr format.
- HTTP/REST: routes, methods, request/response schemas, status codes, headers.
- GraphQL: schema types, fields, arguments, nullability, enum values.
- Config/Env: recognized keys, env vars, and their default values.
Behavioral break signals (syntax may be unchanged):
- Removed or renamed public export, field, route, flag, or env var.
- Changed function/method signature (params added without defaults, reordered, retyped; changed return type).
- Changed default value of a parameter, config key, or env var.
- Stricter input validation (inputs that previously succeeded now error).
- Changed output shape, field names, serialization, or units.
- Changed or narrowed error/exception types thrown, or changed status codes.
- Removed enum value, or changed the meaning of an existing one.
- Database/enum migrations that drop or rename columns consumers read.
Consult the breaking-change-detection skill (references/breaking-change-catalog.md, references/semver-rules.md) for the per-language catalog and the decision matrix.
Output Format:
SemVer Recommendation
Recommended bump: MAJOR | MINOR | PATCH (current: vX.Y.Z)
Confidence: High | Medium | Low: one sentence on what drives it.
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.
- 4d ago First seen · 91 lines · 0 tokens per session scan A 7c541eab7bb8
semver-advisor is an agent published in the GitHub repository sigistry/marketplace (3 stars, last pushed 3d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,467 tokens. 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 2026-09-03.
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