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 skills add alchemyplatform/alchemy-claude-plugin --skill alchemy-mcpgit clone --depth 1 https://github.com/alchemyplatform/alchemy-claude-pluginWrote 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/alchemyplatform/alchemy-claude-plugin/alchemy-mcp)<a href="https://agentmods.dev/skills/alchemyplatform/alchemy-claude-plugin/alchemy-mcp"><img src="https://agentmods.dev/badge/skills/alchemyplatform/alchemy-claude-plugin/alchemy-mcp.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 | $0.00147 | $0.02655 |
| Opus 5 | $0.00073 | $0.01327 |
| Sonnet 5 | $0.00029 | $0.00531 |
| Haiku 4.5 | $0.00015 | $0.00265 |
Grade A, and why
alchemy-mcp 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 7d 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.
- **Don't bypass the MCP server** with raw curl/HTTP from inside the agent — that's the API-key path covered by `alchemy-api`. MCP tools are the canonical interface for this skill. This is a copy
95% identical to alchemy-mcp — 13 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 225 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Alchemy MCP
Use the hosted Alchemy MCP server for live blockchain data, transaction simulation, tracing, NFT/portfolio queries, and Alchemy app administration from inside your AI client.
When to use this skill
Use alchemy-mcp when all of the following are true:
- The user wants live agent work — live querying, analysis, admin work, or on-machine automation that the agent runs now in this session
- An MCP-compatible client (Claude Code, Codex, Cursor, Claude Desktop, VS Code Copilot, etc.) is already wired against
https://mcp.alchemy.com/mcp, OR the user is willing to add it - The Alchemy CLI (
@alchemy/cli) is not installed locally
If the CLI is installed locally — or if both CLI and MCP are available — prefer the alchemy-cli skill instead. The CLI is the preferred local fallback runtime path.
When to use a different skill
| Situation | Use this skill instead |
|---|---|
@alchemy/cli is installed locally, or both CLI and MCP are available |
alchemy-cli |
| Neither CLI nor MCP is available | install alchemy-cli (npm i -g @alchemy/cli), then use alchemy-cli |
| Building application code that runs outside this agent session, with an Alchemy API key | alchemy-api |
| Building application code without an API key, or as an autonomous agent that needs to pay for itself, or you explicitly want x402/MPP | agentic-gateway |
Do not use this skill to write production application code — MCP tools are for live agent work, not for embedding into shipped software.
Connect your client
The server runs at https://mcp.alchemy.com/mcp and authenticates via OAuth — your client opens a browser to sign in with your Alchemy account on first use. No API key or local install required.
Claude Code
claude mcp add alchemy --transport http https://mcp.alchemy.com/mcp
Restart Claude Code, then run /mcp and select alchemy to authenticate.
Codex
codex mcp add alchemy --url https://mcp.alchemy.com/mcp
What ships with it
2 files 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.
- 7d ago First seen · 225 lines · 147 tokens per session scan A 09eb3704e924
alchemy-mcp is a skill published in the GitHub repository alchemyplatform/alchemy-claude-plugin (6 stars, last pushed 2mo ago), licensed MIT. It adds 147 tokens to every session and 2,655 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 95% identical to alchemy-mcp, differing in 13 lines, and is treated as a copy.
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