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 skills/cyanheads/federal-reserve-mcp-server/api-errorsnpx skills add cyanheads/federal-reserve-mcp-server --skill api-errorsgit clone --depth 1 https://github.com/cyanheads/federal-reserve-mcp-serverWrote 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/cyanheads/federal-reserve-mcp-server/api-errors)<a href="https://agentmods.dev/skills/cyanheads/federal-reserve-mcp-server/api-errors"><img src="https://agentmods.dev/badge/skills/cyanheads/federal-reserve-mcp-server/api-errors.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 | $0.00054 | $0.06958 |
| Opus 5 | $0.00027 | $0.03479 |
| Sonnet 5 | $0.00011 | $0.01392 |
| Haiku 4.5 | $0.00005 | $0.00696 |
Grade A, and why
api-errors 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 5d 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.
const articles = await ncbi.fetch(input.pmids); The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 5d ago First seen · 529 lines · 54 tokens per session scan A 140957b2714f
api-errors is a skill published in the GitHub repository cyanheads/federal-reserve-mcp-server (1 stars, last pushed 15d ago), with no licence file. It adds 54 tokens to every session and 6,958 once invoked, about $0.0003 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
widen-return-type
When delegating a task affected by this skill, include.
add-a-lib
Scaffold a new shared library under libs/ in the builders-stack monorepo. Use when code is needed in two or more places (apps or services) and should become a single source of truth consumed by package name. Covers the package.json, tsconfig, the one-public-door src/index.ts barrel, and wiring it into a consumer…
bun
Use this skill when building with Bun runtime — Bun APIs, testing, package management, shell scripting, hot reload, SQLite, file I/O. This skill enforces: built-in APIs over npm equivalents, Bun test runner, bun install speed optimization, Bun.shell for scripts. Do NOT use for: Node.js-specific APIs…
mastra
Comprehensive Mastra framework guide. Teaches how to find current documentation, verify API signatures, and build agents and workflows. Covers documentation lookup strategies (embedded docs, remote docs), core concepts (agents vs workflows, tools, memory, RAG), TypeScript requirements, and common patterns. Use this…
hono-core
Hono ultrafast web framework fundamentals - routing, context, handlers, and response patterns for multi-runtime deployment.
typescript-ultimate
End-to-end TypeScript engineering skill for designing, implementing, reviewing, and refactoring production-grade TS codebases. Use when tasks involve TypeScript architecture, advanced typing, strict safety, API/schema typing, React/Node/Nest/Express/Fastify patterns, testing, linting, migration, or code review in…