api-mirror

api-mirror is a skill for Claude Code from cyanheads/bls-labor-mcp-server. It costs 68 tokens per session (2,142 once invoked), scanned A, original, no licence file.

A local copy of a large upstream dataset that refreshes itself and can be searched through an embedded database.

In plain words
What is it for?
It helps servers sync bulk API data locally, search it with SQLite and full-text search, and answer requests from the local index.
Why use it?
It avoids repeatedly requesting slow or paginated live APIs for every query.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the bls-labor-mcp-server plugin — 32 skills, 1 MCP server shipped together

Good fit It helps servers sync bulk API data locally, search it with SQLite and full-text search, and answer requests from the local index.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/cyanheads/bls-labor-mcp-server/api-mirror
Install

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.

Any agent
npx skills add cyanheads/bls-labor-mcp-server --skill api-mirror
Clone the repo
git clone --depth 1 https://github.com/cyanheads/bls-labor-mcp-server

Made for: Claude Code.

Or install bls-labor-mcp-server, the plugin that ships this one along with the rest of its 32 skills, 1 MCP server.

Wrote 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.

agentmods badge for api-mirror

README.md
[![agentmods](https://agentmods.dev/badge/skills/cyanheads/bls-labor-mcp-server/api-mirror/github.svg)](https://agentmods.dev/skills/cyanheads/bls-labor-mcp-server/api-mirror)
Your own site
<a href="https://agentmods.dev/skills/cyanheads/bls-labor-mcp-server/api-mirror"><img src="https://agentmods.dev/badge/skills/cyanheads/bls-labor-mcp-server/api-mirror/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.

agentmods 80×15 button for api-mirror

Your own site · 80×15
<a href="https://agentmods.dev/skills/cyanheads/bls-labor-mcp-server/api-mirror"><img src="https://agentmods.dev/badge/skills/cyanheads/bls-labor-mcp-server/api-mirror.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,142 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00068 $0.02142
Opus 5 $0.00034 $0.01071
Sonnet 5 $0.00014 $0.00428
Haiku 4.5 $0.00007 $0.00214

Measured 8d ago against content hash 89b98aefc722, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

api-mirror 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 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.

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.

skills/api-mirror/SKILL.md · 133 lines

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.

Read it on GitHub

Changes

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.

  1. 8d ago First seen · 133 lines · 68 tokens per session scan A 89b98aefc722

Subscribe to this mod's changes

api-mirror is a skill published in the GitHub repository cyanheads/bls-labor-mcp-server (1 stars, last pushed 9d ago), with no licence file. It adds 68 tokens to every session and 2,142 once invoked, about $0.0003 per session on Opus 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.

Related

Other skills, from other repositories

api-mirror

Stand up a persistent, self-refreshing local mirror of a bulk upstream dataset with the MirrorService (@cyanheads/mcp-ts-core/mirror). Use when a server wraps a large or slow API and should query a synced local index (embedded SQLite + FTS5) instead of paginating the live API per request.

cyanheads/federal-reserve-mcp-server · 68 tokens

api-mirror

Stand up a persistent, self-refreshing local mirror of a bulk upstream dataset with the MirrorService (@cyanheads/mcp-ts-core/mirror). Use when a server wraps a large or slow API and should query a synced local index (embedded SQLite + FTS5) instead of paginating the live API per request.

cyanheads/eia-energy-mcp-server · 68 tokens

design-mcp-server

Design the tool surface, resources, and service layer for a new MCP server. Use when starting a new server, planning a major feature expansion, or when the user describes a domain/API they want to expose via MCP. Produces a design doc at docs/design.md that drives implementation.

cyanheads/federal-reserve-mcp-server · 62 tokens

api-canvas

DataCanvas primitive reference — a Tier 3 SQL/analytical workspace for tabular MCP servers, backed by DuckDB. Use when registering tables from upstream APIs, running ad-hoc SQL across them, and exporting results. Covers the acquire → register → query → export flow, per-table TTL, the token-sharing pattern for…

cyanheads/federal-reserve-mcp-server · 85 tokens

api-errors

McpError constructor, JsonRpcErrorCode reference, and error handling patterns for @cyanheads/mcp-ts-core. Use when looking up error codes, understanding where errors should be thrown vs. caught, or using ErrorHandler.tryCatch in services.

cyanheads/federal-reserve-mcp-server · 54 tokens

api-config

Reference for core and server configuration in @cyanheads/mcp-ts-core. Covers env var tables with defaults, priority order, server-specific Zod schema pattern, and Workers lazy-parsing requirement.

cyanheads/federal-reserve-mcp-server · 43 tokens