BlazePhoenix on-chain DEX aggregator

On-chain DEX aggregator tools for AI agents. The defining property: every quote is computed by the on-chain Quoter contract (previewPlan, a free eth_call), the same logic that executes the swap, and it runs on your own RPC. There is no pricing server to trust, and every number an agent relays is reproducible by anyone.

• Local server: @blazephoenix/mcp over stdio. Quotes, unsigned calldata, simulation and solvency, all read through the node you configure.
• Remote endpoint: https://blazephoenix.xyz/mcp (streamable HTTP, stateless). Deployment registry, ABIs and the pure quote codec. It performs no RPC call.
• Auth: none · API key: none
• Chains: Base (8453), Ethereum (1), Optimism (10), Arbitrum (42161), Robinhood Chain (4663)

Local server

claude mcp add blazephoenix -e BLAZEPHOENIX_RPC_BASE=<your Base node URL> -- npx -y @blazephoenix/mcp

Any MCP client (JSON config):

{
  "mcpServers": {
    "blazephoenix": {
      "command": "npx",
      "args": ["-y", "@blazephoenix/mcp"],
      "env": { "BLAZEPHOENIX_RPC_BASE": "<your Base node URL>" }
    }
  }
}

The RPC comes from the environment only, never from a tool argument:

Variable	Meaning
BLAZEPHOENIX_RPC_URL	One node, used for every chain it serves
BLAZEPHOENIX_RPC_BASE, _ETH, _OPTIMISM, _ARBITRUM, _ROBINHOOD	A node per chain. Use either this or BLAZEPHOENIX_RPC_URL, not both

A value may hold several URLs separated by commas; they are your fallback order. The server never prints your URLs, since they may carry a key.

Tools

Tool	What it does
get_quote	Swap quote through your RPC: net output after the fee, the minimum the Router enforces, price impact and the Phoenix Check verdict (ok / caution / danger / blocked, fails closed). exact: true dry-runs every concentrated leg.
build_swap	Quote and return verified unsigned Router calldata, with the minimum output and deadline baked in.
simulate_swap	Build the swap and dry-run it from a given account with an eth_call.
check_solvency	Live staking solvency: isSolvent() and the decoded solvency() struct.
get_token_info	Symbol, decimals and name of a token, read from the chain.
get_deployments	The versioned deployment registry: Core, Hub, Solver, Quoter and Router per chain and version.
verify_deployment	Check that the registry addresses for a chain and version match what is deployed on-chain.

Every tool is read-only. The server never signs and never holds a key. build_swap returns calldata for you to review and sign in your own wallet, and the SDK's wallet-taking execute() is deliberately not exposed.

Remote endpoint

claude mcp add --transport http blazephoenix https://blazephoenix.xyz/mcp

{ "mcpServers": { "blazephoenix": { "type": "http", "url": "https://blazephoenix.xyz/mcp" } } }

Tool	What it does
prepare_quote	The exact eth_call to run on your node for a quote, plus a request object
decode_quote	Turns your node's answer into the quote, the Phoenix Check verdict and verified calldata (pure)
get_deployments	The versioned deployment registry
get_abi	Generated ABI of a protocol contract

The source of the endpoint is in Blaze-Phoenix-API.

Install as a plugin or extension

Claude Code plugin (hosted MCP endpoint plus the BlazePhoenix agent skill):

claude plugin marketplace add blazephoenixxyz-crypto/blazephoenix-mcp
claude plugin install blazephoenix@blazephoenix

Gemini CLI extension (hosted MCP endpoint plus a context file):

gemini extensions install https://github.com/blazephoenixxyz-crypto/blazephoenix-mcp

Both connect https://blazephoenix.xyz/mcp, which needs no key and performs no RPC. For the full toolset on your own node, use the local server.

Verify instead of trusting

Nothing here requires trusting BlazePhoenix:

# the solvency claim, straight from the chain, bypassing the site entirely
cast call 0x3f60C7aa0c36a78D200405feBE143d2Cf3fA0c77 "isSolvent()(bool)" --rpc-url https://mainnet.base.org

# re-execute any published fact live, with its block height
curl -s "https://blazephoenix.xyz/api/verify?fact=solvency-live"

# reproduce every live claim in ~60 seconds
curl -sO https://blazephoenix.xyz/repro/verify-everything.sh && bash verify-everything.sh

Build and test

npm install
npm run build
npm test

The test spawns the built server over stdio with no RPC configured and checks the tool surface, that failures come back as tool results, and that no tool takes an RPC, key or signer argument or signs anything.

More machine surfaces

Surface	URL
OpenAPI 3.1	https://blazephoenix.xyz/api/openapi.json
Agent task flows (agents.json)	https://blazephoenix.xyz/.well-known/agents.json
Installable skill file	https://blazephoenix.xyz/skills/blazephoenix/SKILL.md
Capability map	https://blazephoenix.xyz/capabilities.json
Proof-carrying facts (claim/proof/url)	https://blazephoenix.xyz/facts.json
LLM corpus index	https://blazephoenix.xyz/llms.txt
Integration guide for humans	https://blazephoenix.xyz/agents

Security

To report a vulnerability, see SECURITY.md.

License

The code is MIT (see LICENSE). This documentation is CC BY 4.0. The protocol contracts are BUSL-1.1 (free to read, audit and verify; production use before the 2030 change date requires a license). The mechanisms and terminology (Iron Law Φ, Monoslot, Master Conservation Identity) are original BlazePhoenix work: attribute with a link.

Contact: contact@blazephoenix.xyz · Security: https://blazephoenix.xyz/.well-known/security.txt