Alchemy Agentic Gateway
moonpay/skills
A skill your agent uses when accessing Alchemy APIs for RPC calls, token balances, NFT metadata, asset transfers, transaction simulation, or Alchemy-specific features.
Build a minimal, reviewable Alchemy EVM read with viem and prove its network, authentication, and failure behavior.
Install Alchemy Hello World
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace alchemy-hello-world --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.curated/alchemy-hello-world .claude/skills/alchemy-hello-world && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "alchemy-hello-world" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/alchemy-hello-world into .claude/skills/alchemy-hello-world/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alchemy-hello-world", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/alchemy-hello-worldType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace alchemy-hello-world --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/.curated/alchemy-hello-world .agents/skills/alchemy-hello-world && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "alchemy-hello-world" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/alchemy-hello-world into .agents/skills/alchemy-hello-world/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alchemy-hello-world", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace alchemy-hello-world --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/.curated/alchemy-hello-world .cursor/skills/alchemy-hello-world && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "alchemy-hello-world" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/alchemy-hello-world into .cursor/skills/alchemy-hello-world/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alchemy-hello-world", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/jeremylongshore/tons-of-skills-marketplace.git --path skills/.curated/alchemy-hello-world--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace alchemy-hello-world --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/.curated/alchemy-hello-world .gemini/skills/alchemy-hello-world && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "alchemy-hello-world" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/alchemy-hello-world into .gemini/skills/alchemy-hello-world/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alchemy-hello-world", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install jeremylongshore/tons-of-skills-marketplace alchemy-hello-worldInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/.curated/alchemy-hello-world .github/skills/alchemy-hello-world && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "alchemy-hello-world" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/alchemy-hello-world into .github/skills/alchemy-hello-world/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alchemy-hello-world", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace alchemy-hello-world --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/.curated/alchemy-hello-world .opencode/skills/alchemy-hello-world && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "alchemy-hello-world" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/skills/.curated/alchemy-hello-world into .opencode/skills/alchemy-hello-world/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "alchemy-hello-world", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
alchemy-hello-world- GitHub stars
- 2.8k
- Token cost
- ~1.2k tokens
- SKILL.md length
- 550 words
- Files
- 2 (incl. references)
- Skills in repo
- 3,342
- Repo updated
- First seen
- Licence
- MIT
At a glance
Build a minimal, reviewable Alchemy EVM read with viem and prove its network, authentication, and failure behavior.
- Works in 6 steps: Choose one supported EVM chain and… → Install a repository-approved, pinned… → Create a public client with the declared… → …
- Starting an Alchemy integration
- SKILL.md covers Overview, Prerequisites, Current Contract and Authentication, plus 8 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Alchemy Hello World is an agent skill from jeremylongshore/tons-of-skills-marketplace. Build a minimal, reviewable Alchemy EVM read with viem and prove its network, authentication, and failure behavior. Use when starting an Alchemy integration or replacing an SDK sample. Trigger with "Alchemy hello world", "read an Ethereum block", or "test my Alchemy connection".
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/official-docs.md`). Compatibility notes: Designed for Claude Code; live Alchemy access requires network access, an appropriate credential, account capacity, and explicit approval
It sits in Backend & APIs, covering Smart contracts and Authentication. It works with viem and wagmi and Ethereum. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.
When your agent uses it
- Starting an Alchemy integration
- Replacing an SDK sample
- With Alchemy hello world
- Read an Ethereum block
Example prompts
- “Alchemy hello world”
- “read an Ethereum block”
- “test my Alchemy connection”
- “/alchemy-hello-world”
Requirements
- Compatibility (from SKILL.md): Designed for Claude Code; live Alchemy access requires network access, an appropriate credential, account capacity, and explicit approval
- Pre-approved tools (allowed-tools): Read, Glob, Grep, Write, Edit
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Choose one supported EVM chain and verify its current endpoint and feature support in first-party documentation.
- Install a repository-approved, pinned viem release and preserve the lockfile review; do not add alchemy-sdk.
- Create a public client with the declared viem chain and an Alchemy HTTP transport supplied from the server secret boundary.
- Read the chain ID and latest block number, assert that the chain ID equals the configured chain, and record only redacted timing and block…
- Exercise an invalid credential and a deliberately mismatched chain expectation so the proof demonstrates fail-closed behavior.
- Return the source, lockfile, test output, and rollback change without making a transaction or requesting a signing key.
What it can do on your machine
Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGlobGrepWriteEdit
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Compatibility
Designed for Claude Code; live Alchemy access requires network access, an appropriate credential, account capacity, and explicit approval
From compatibility in the SKILL.md frontmatter.
Context cost
Alchemy Hello World loads about 1.2k tokens when it runs, and up to ~2k if it reads all its reference files. Until then it costs about 75 tokens; SKILL.md has 550 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 550 words, ~1,215 tokens.
Download SKILL.mdSave it as
.claude/skills/alchemy-hello-world/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- alchemy-hello-world
- description
- Build a minimal, reviewable Alchemy EVM read with viem and prove its network, authentication, and failure behavior. Use when starting an Alchemy integration or replacing an SDK sample. Trigger with "Alchemy hello world", "read an Ethereum block", or "test my Alchemy connection".
- allowed-tools
- Read, Glob, Grep, Write, Edit
- compatibility
- Designed for Claude Code; live Alchemy access requires network access, an appropriate credential, account capacity, and explicit approval
- argument-hint
- <chain> <read-method> <fixture>
- version
- 2.0.0
- license
- MIT
- author
- Jeremy Longshore <jeremy@intentsolutions.io>
- tags
- saas, alchemy, viem, web3
- model
- inherit
- effort
- high
Alchemy Read-Only Connectivity Proof
Overview
Build a minimal, reviewable Alchemy EVM read with viem and prove its network, authentication, and failure behavior. This workflow produces a reviewable artifact and negative-path evidence before any live side effect.
Prerequisites
- Current first-party Alchemy documentation for the selected product, chain, feature, client, authentication method, limit, and lifecycle.
- Named product, application, security, data/privacy, budget, release, and operations owners appropriate to the requested scope.
- Synthetic or approved non-production fixtures, a credential canary, explicit success criteria, and a tested rollback boundary.
Current Contract
The current Ethereum quickstart uses viem. A successful eth_blockNumber proves endpoint connectivity only; it does not prove Enhanced API, NFT API, Portfolio, Wallet API, or Admin entitlement. Chain identity must be checked from the response context rather than assumed from an endpoint string.
Authentication
Use a development application key through the repository's approved server-side secret boundary. Never print the URL when it contains a credential. A browser proof requires the allowlist or short-lived-JWT protections documented in the approved threat model.
Instructions
- Choose one supported EVM chain and verify its current endpoint and feature support in first-party documentation.
- Install a repository-approved, pinned
viemrelease and preserve the lockfile review; do not addalchemy-sdk. - Create a public client with the declared viem chain and an Alchemy HTTP transport supplied from the server secret boundary.
- Read the chain ID and latest block number, assert that the chain ID equals the configured chain, and record only redacted timing and block evidence.
- Exercise an invalid credential and a deliberately mismatched chain expectation so the proof demonstrates fail-closed behavior.
- Return the source, lockfile, test output, and rollback change without making a transaction or requesting a signing key.
Tool Discipline
Use Read, Glob, and Grep to inspect current documentation, configuration, code, fixtures, and evidence. Use Write and Edit only for approved repository artifacts. Skill invocation alone does not authorize network access, credentials, wallet addresses, customer data, plan changes, spend, key creation or rotation, webhook changes, deployment, replay, transaction construction, signing, broadcast, or deletion.
Show full SKILL.md (212 more words)Show less
Approval Boundaries
Read-only development proof needs the application owner's scoped key. Installing a dependency follows repository review. Any transaction, wallet connection, browser credential, or production call is outside this skill and requires separate approval.
Error Handling
- Treat
401or403as a credential or policy failure, not as a reason to broaden access. - Treat a chain-ID mismatch as a hard configuration failure even if the block-number call succeeded.
- Honor
429and provider5xxwith a bounded retry budget; never loop until success.
Output
Return the chosen chain, current source links, dependency decision, minimal viem client, chain-ID assertion, redacted positive and negative test receipts, and rollback command. Mark assumptions, observations, source dates, environment-specific behavior, owners, and unresolved gaps explicitly.
Examples
- Prove an Ethereum Sepolia client returns the expected chain ID and a positive block number without logging its transport URL.
- Show that an Ethereum client pointed at another chain fails the chain-ID assertion instead of returning a misleading success banner.
Validation
Exercise and record expected and observed results for:
- valid development key
- invalid key
- wrong chain
- rate-limit response
- provider timeout
- credential canary absent from logs
Resources
- Current first-party evidence map — recheck dated Alchemy sources before execution.
- Treat observed account, application, network, indexer, chain, or provider behavior as environment-specific evidence, never a universal guarantee.
© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/.curated/alchemy-hello-world of jeremylongshore/tons-of-skills-marketplace.
- SKILL.md
- references/official-docs.md
Open the folder on GitHubat commit cfae287
Compare with similar skills
Alchemy Hello World next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Alchemy Hello World this skilljeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Alchemy Agentic Gatewaymoonpay/skills | 113 | — | ~2.1k | Automated safety check: Notes | MIT | |
| Bridge Tokenscirclefin/skills | 155 | — | ~4.5k | Automated safety check: Notes | Apache-2.0 | |
| Use Arccirclefin/skills | 155 | — | ~2.1k | Automated safety check: Notes | Apache-2.0 | |
| Meganode SkillLeoYeAI/openclaw-master-skills | 2.2k | — | ~5.4k | Automated safety check: Pass | MIT | |
| Web3authWeb3Auth/web3auth-examples | 144 | — | ~1.4k | Automated safety check: Pass | MIT |
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Works with
Categories
Questions about Alchemy Hello World
What does Alchemy Hello World do?
Build a minimal, reviewable Alchemy EVM read with viem and prove its network, authentication, and failure behavior. Alchemy Hello World is an agent skill from jeremylongshore/tons-of-skills-marketplace. Build a minimal, reviewable Alchemy EVM read with viem and prove its network, authentication, and failure behavior.
When should I use Alchemy Hello World?
Alchemy Hello World fits situations like: starting an Alchemy integration; replacing an SDK sample; with Alchemy hello world; read an Ethereum block.
How do I install Alchemy Hello World in Claude Code?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a claude-code`. Or copy the skill folder (skills/.curated/alchemy-hello-world in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/alchemy-hello-world in your project. Claude Code loads it when a task matches its description.
How do I install Alchemy Hello World in Codex?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a codex`. Or copy the skill folder (skills/.curated/alchemy-hello-world in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/alchemy-hello-world in your project. Codex loads it when a task matches its description.
Can I use Alchemy Hello World in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill alchemy-hello-world -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/alchemy-hello-world, .gemini/skills/alchemy-hello-world, .github/skills/alchemy-hello-world and .opencode/skills/alchemy-hello-world in your project.
What does Alchemy Hello World need to run?
SKILL.md names no scripts, command-line tools or credentials: Alchemy Hello World is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Glob, Grep, Write, Edit. Compatibility (from SKILL.md): Designed for Claude Code; live Alchemy access requires network access, an appropriate credential, account capacity, and explicit approval.
Does Alchemy Hello World access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Alchemy Hello World safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Alchemy Hello World use?
Alchemy Hello World is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Alchemy Hello World use?
About 1.2k tokens (SKILL.md is roughly 4.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 761 tokens, read only when the agent opens those files.
What are the alternatives to Alchemy Hello World?
Skills that share tags, products or a category with Alchemy Hello World: Alchemy Agentic Gateway (moonpay/skills, 113 stars), Bridge Tokens (circlefin/skills, 155 stars), Use Arc (circlefin/skills, 155 stars) and Meganode Skill (LeoYeAI/openclaw-master-skills, 2.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Alchemy Hello World?
jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.
Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.