Borrowing it
Nothing to install: this file belongs to UmutKDev/myanimelist-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/UmutKDev/myanimelist-mcp/main/.claude/skills/verify-mal-api-fact/SKILL.mdgit clone --depth 1 https://github.com/UmutKDev/myanimelist-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/umutkdev/myanimelist-mcp/verify-mal-api-fact)<a href="https://agentmods.dev/skills/umutkdev/myanimelist-mcp/verify-mal-api-fact"><img src="https://agentmods.dev/badge/skills/umutkdev/myanimelist-mcp/verify-mal-api-fact.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 | $0.00043 | $0.00437 |
| Opus 5 | $0.00022 | $0.00218 |
| Sonnet 5 | $0.00009 | $0.00087 |
| Haiku 4.5 | $0.00004 | $0.00044 |
Grade A, and why
verify-mal-api-fact scanned grade A with 1 finding 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 8d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
2. **If unknown/uncertain, verify against the live API** — a `curl` with a valid token, or a throwaway What it actually says
Verify a MAL API fact
This repo has a strong culture of recording live-verified MAL API / FastMCP behavior in
NOTES.md before coding against it. Don't guess at API shape — verify, then write it down.
Steps
- Check
NOTES.mdfirst — it is the verified-facts log. If the behavior is already recorded, use it. - If unknown/uncertain, verify against the live API — a
curlwith a valid token, or a throwaway async script usingMALClient. Observe the actual response shape/status, not the docs (MAL's docs are frequently wrong). - Record the concrete observation in
NOTES.md— the endpoint, what you sent, what came back, and the date — before writing code that depends on it.
Known landmines (already in NOTES.md)
fieldsis mandatory — omit it and MAL returns near-empty nodes and dropslist_status.- Rate-limit = HTTP 403 ("DoS detected"), not 429.
- PKCE is
plain-only — MAL does not support S256, which rules out most off-the-shelf OAuth clients and is why theTokenManager/MAL_ACCESS_TOKENpaths exist instead of a login flow. - Rotated refresh tokens stay valid — load-bearing for the stdio distribution, since every
client launch re-submits the same
MAL_REFRESH_TOKENfrom the env. Re-verify before releases. - DELETE returns
[](non-dict body) with 200 and is idempotent in practice despite docs claiming 404. - Redirects are treated as failures on API calls (following one could fake empty/success results).
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.
- 8d ago First seen · 30 lines · 43 tokens per session scan A 9ddbbf0dfd60
verify-mal-api-fact is a skill published in the GitHub repository UmutKDev/myanimelist-mcp (1 stars, last pushed 1mo ago), licensed MIT. It adds 43 tokens to every session and 437 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.
local-ai-agents
Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…
next-cache-components-adoption
Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…
next-cache-components-optimizer
Drive a Next.js route to instant navigation by setting up an agentic loop, under Cache Components / PPR, on initial load (hard navigation) and client-side navigation (soft navigation). Encode the goal as a failing @next/playwright instant() e2e and work it to green, one verified route at a time; the shipped test then…
next-partial-prefetching-adoption
Turn on Partial Prefetching in a Next.js app and work through the insights it surfaces. Use when the user wants to enable or adopt Partial Prefetching, flip the partialPrefetching flag, opt routes in with export const prefetch = 'partial', audit Link prefetch={true} behavior, preserve existing prefetched UI with…
chronicle
Analyze Copilot session history for standup reports, usage tips, session search, and session reindexing. Use when the user asks for a standup, daily summary, usage tips, workflow recommendations, wants to search or find past sessions by keyword/file/PR, wants to reindex their session store, or asks about deleting…