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Alchemy for AI agents

Alchemy is a blockchain development platform providing APIs for reading and building on Ethereum and other chains. Web3 developers use it to query wallets, tokens and NFTs. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect AlchemySee the 36 actions ↓
Developer toolsAPI keyMCP + RESTalchemy.com
AUDIT LOG · ALCHEMYPOLICY: acme-support
09:41:07 · claude · u_8f2read
alchemy.get_nft_metadata
Get NFT Metadata✓ allowed · 212ms
09:41:08 · claude · u_8f2read
alchemy.get_nft_sales_v3
Get NFT Sales V3✓ allowed · 164ms
09:41:09 · claude · u_8f2write
alchemy.is_airdrop
Check If NFT Is Airdrop✓ approved · approved by user
EVERY ALCHEMY CALL, ON THE RECORD
01 · USE CASES

What agents do in Alchemy.

01

Check token balances

Look up the token balances held by a wallet address across supported chains.

02

Look up NFT metadata

Pull the metadata and rarity info for a specific NFT before listing or displaying it.

03

Get transaction history for an address

Retrieve the recent transaction history of a wallet address for a report or audit.

02 · ACTIONS

36 Alchemy actions, graded by risk.

Every Alchemy action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

28

Look things up. Allowed by default.

  • alchemy.get_nft_metadata
    Get NFT Metadata
  • alchemy.get_nft_sales_v3
    Get NFT Sales V3
  • alchemy.get_floor_price_v3
    Get NFT Floor Price
  • alchemy.get_token_balances
    Get Token Balances
  • alchemy.get_token_metadata
    Get Token Metadata
  • alchemy.get_nf_ts_for_owner
    Get NFTs for Owner
  • alchemy.get_owners_for_nftv3
    Get NFT Owners (v3)
  • alchemy.get_prices_by_symbol
    Get Token Prices By Symbol
  • alchemy.get_historical_prices
    Get Historical Token Prices
  • alchemy.get_tokens_by_address
    Get Tokens By Address
  • alchemy.get_transaction_count
    Get Transaction Count
  • alchemy.get_nft_metadata_batch
    Get NFT Metadata Batch
  • alchemy.get_nf_ts_for_contract
    Get NFTs for Contract
  • alchemy.get_collection_metadata
    Get NFT Collection Metadata
  • alchemy.get_owners_for_contract
    Get Owners for Contract
  • alchemy.get_contract_metadata_v3
    Get Contract Metadata V3
+ 12 MORE

write

8

Create and change things. Allow, or ask the user first.

  • alchemy.is_airdrop
    Check If NFT Is Airdrop
  • alchemy.is_airdrop_nft
    Check If NFT Is Airdrop
  • alchemy.is_spam_contract
    Check if Contract is Spam
  • alchemy.compute_rarity_v3
    Compute NFT Rarity
  • alchemy.is_spam_contract_v3
    Check if Contract is Spam (V3)
  • alchemy.is_holder_of_contract
    Check NFT Holder Status
  • alchemy.invalidate_contract_v3
    Invalidate NFT Contract Cache
  • alchemy.is_holder_of_collection
    Check Collection Ownership

destructive

0

Delete, cancel or archive. Ask first, or deny outright.

  • No destructive actions.
03 · HOW IT WORKS

Alchemy in three steps.

  1. 01Your users connect AlchemyThey add their Alchemy api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, and writes like “check If NFT Is Airdrop” can wait for the user to approve.
  3. 03Any agent can actYour agent calls Alchemy through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('alchemy', {
  read: 'allow',
  write: 'ask',        // is_airdrop
  destructive: 'deny',  
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How Alchemy connects.

Users add their Alchemy api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same Alchemy connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use Alchemy from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More developer tools apps.

GitHub896 actionsSupabase129 actions0CodeKit8 actionsAbly25 actionsAbstract3 actionsAddressfinder17 actionsAddresszen2 actionsAlgolia133 actions
ALL DEVELOPER TOOLS APPS →
07 · FAQ

Alchemy and Arc0, answered.

Q01

Can I use Alchemy with Claude, ChatGPT or Cursor?

Yes. Connect Alchemy to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Alchemy actions you allow.

Q02

How do users connect Alchemy?

Users add their Alchemy api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which Alchemy actions can my agent take?

36 in total: 28 read, 8 write and 0 destructive, such as “check If NFT Is Airdrop”. Your policies decide which of them each agent may call.

Q04

Can I make my agent read-only in Alchemy?

Yes. Allow read actions and deny writes in the Alchemy policy. Your agent can still look things up, and any write it attempts is blocked and logged.

Q05

Can my own backend call Alchemy too?

Yes. The same Alchemy connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Alchemy into your agent.

Your users connect Alchemy once, under your brand. Your agent gets 36 actions behind your policies, with every call on the record.

Connect AlchemyBrowse all apps →

Free to build · MCP + REST · Audit log on every plan