Borrowing it
Nothing to install: this file belongs to jeeftor/abs-mcp. 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/jeeftor/abs-mcp/master/.agents/skills/abs-api-source-sync/SKILL.mdgit clone --depth 1 https://github.com/jeeftor/abs-mcpWrote 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/jeeftor/abs-mcp/abs-api-source-sync)<a href="https://agentmods.dev/skills/jeeftor/abs-mcp/abs-api-source-sync"><img src="https://agentmods.dev/badge/skills/jeeftor/abs-mcp/abs-api-source-sync/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/jeeftor/abs-mcp/abs-api-source-sync"><img src="https://agentmods.dev/badge/skills/jeeftor/abs-mcp/abs-api-source-sync.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 | $0.00053 | $0.00618 |
| Opus 5.5 | $0.00021 | $0.00247 |
| Sonnet 5.5 | $0.00011 | $0.00124 |
| Haiku 4.5 | $0.00005 | $0.00062 |
Grade A, and why
abs-api-source-sync 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 — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ABS API Source Sync
Purpose
Keep this MCP server aligned with Audiobookshelf API source while exposing only bounded, typed, agent-safe workflows.
Source Priority
- Audiobookshelf source code, especially
server/routers/ApiRouter.jsand handlers underserver/controllers/. - Behavior verified against the repo-local Docker ABS fixture.
- Current Audiobookshelf user docs for setup and auth concepts.
- Old API docs only as historical hints.
Workflow
- Identify the Audiobookshelf source revision under review.
- Generate or update inventory with
make abs-api-inventoryormake abs-api-inventory-from-router. - Compare generated inventory to baseline with
make abs-api-inventory-diff. - Classify changes as new, removed, path/method changed, auth changed, request schema changed, or response schema changed.
- For endpoints mapped to MCP surface, update the typed ABS client, MCP schema, output shape, docs, and tests together.
- If the MCP tool surface changes materially, rerun the
$abs-mcp-comparisonskill so the README comparison and feature-gap suggestions stay current. - Run unit tests and relevant fixture round trips.
MCP Mapping Rules
- Do not expose every ABS route directly.
- Prefer resources for bounded read-only state snapshots.
- Prefer tools for actions, bounded queries, and repeatable operational workflows.
- Every tool schema must document required inputs, optional inputs, output shape, error cases, and whether it mutates ABS state.
- Every mutating tool must be blocked when
ABS_READ_ONLY=true. - Destructive tools, including delete, remove, purge, overwrite, replace, and broad batch operations, must require an explicit confirmation input. Prefer an exact phrase that includes the relevant ABS ID, and add expected-count checks when the tool can preview affected records.
- Long operations should return job/status information or use a separate status read instead of blocking indefinitely.
Required Output
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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 · 72 lines · 53 tokens per session scan A add1c497811b
abs-api-source-sync is a skill published in the GitHub repository jeeftor/abs-mcp (1 stars, last pushed 1mo ago), licensed MIT. It adds 53 tokens to every session and 618 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 2026-08-31.
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