Cambrian API

Name: Cambrian API
Author: cambriannetwork

by cambriannetworkversion 1.9.0i★ 0iComputer or cloud

Registry nameio.github.cambriannetwork/cambrian-api

How to install

Overview

Description from the maker (original English)

Cambrian API MCP: Solana and EVM DeFi data, Deep42 social intelligence, and perpetual risk analysis.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Crypto & blockchain
You need to fill in: CAMBRIAN_API_KEY, Authorization

Install

Pick the AI app you use, then copy the settings.

Passed 3/4 checks · What you ask goes through the maker’s server (mcp.cambrian.org)

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude · about 5 min

You need a Cambrian API key (sign up on the maker’s site, may cost money) · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1

Sign up and create a Cambrian API key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
How to get a key is in the maker’s README below
Done
Open Claude’s Connectors page
CustomizeConnectors
Done
Click “+ Add” → “Add custom connector” and fill in these 2 fields
Copy each value into the field with the same name in Claude, then click Continue
Name · NameCambrian API
Remote MCP server URL · Addresshttps://mcp.cambrian.org/mcp
Under Request headers, add this name and value
Header nameAuthorization
ValueBearer <paste your key here>
Paste the key only into the app’s field, never into a chat or to anyone
Leave Authentication as Claude detected it, then click Add
Done
Turn it on in a chat
+ConnectorsCambrian API
Done
Try it
Use Cambrian API and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Cambrian API or shows a Cambrian API tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Cambrian API yet

Cambrian API needs your own key to connect, but OpenAI’s help page only describes OAuth sign-in; there is no key option we could verify

What you can do instead

A · Use an app that can connect Cambrian API

Steps for Claude →You need a Cambrian API key (sign up on the maker’s site, may cost money) · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1
Steps for Claude Code →You need a Cambrian API key (sign up on the maker’s site, may cost money)
Steps for Cursor →You need a Cambrian API key (sign up on the maker’s site, may cost money)
Steps for VS Code →You need a Cambrian API key (sign up on the maker’s site, may cost money)

B · Others in Crypto & blockchain that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Solana MCP by Vybe✓ ChatGPT
0xinsider✓ ChatGPT
Highwire✓ ChatGPT

Works with Claude Code · about 5 min

You need a Cambrian API key (sign up on the maker’s site, may cost money)

Sign up and create a Cambrian API key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
How to get a key is in the maker’s README below
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done
3
Paste this command and press Enter
```
claude mcp add --transport http cambrian-api https://mcp.cambrian.org/mcp --header 'Authorization: your-value'
```
Replace “your-value” with your key before pressing Enter
Paste the key only into the app’s field, never into a chat or to anyone
Done
Type /mcp in Claude Code
You should see Cambrian API listed as connected
Done
Try it
Use Cambrian API and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Cambrian API or shows a Cambrian API tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor · about 5 min

You need a Cambrian API key (sign up on the maker’s site, may cost money)

Sign up and create a Cambrian API key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
How to get a key is in the maker’s README below
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Fill in your key
In the Cambrian API settings, Authorization is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Cambrian API and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Cambrian API or shows a Cambrian API tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code · about 5 min

You need a Cambrian API key (sign up on the maker’s site, may cost money)

Sign up and create a Cambrian API key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
How to get a key is in the maker’s README below
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Fill in your key
In the Cambrian API settings, Authorization is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Cambrian API and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Cambrian API or shows a Cambrian API tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

Address for apps that connect over the web

Addresshttps://mcp.cambrian.org/mcp

JSON settings are under “For developers” below

Stuck? Ask people who use Cambrian API💬 Discussion →

For developers: Terminal commands and JSON settings

Over the web

Claude Code

claude mcp add --transport http cambrian-api https://mcp.cambrian.org/mcp --header 'Authorization: your-value'

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "cambrian-api": {
      "url": "https://mcp.cambrian.org/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "cambrian-api": {
      "type": "http",
      "url": "https://mcp.cambrian.org/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Installed on your computer

Claude Code

claude mcp add cambrian-api --env CAMBRIAN_API_KEY=your-value -- npx -y cambrian-api-mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "cambrian-api": {
      "command": "npx",
      "args": [
        "-y",
        "cambrian-api-mcp"
      ],
      "env": {
        "CAMBRIAN_API_KEY": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "cambrian-api": {
      "command": "npx",
      "args": [
        "-y",
        "cambrian-api-mcp"
      ],
      "env": {
        "CAMBRIAN_API_KEY": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "cambrian-api": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "cambrian-api-mcp"
      ],
      "env": {
        "CAMBRIAN_API_KEY": "your-value"
      }
    }
  }
}

Values you fill in

CAMBRIAN_API_KEY secret required env
Your Cambrian API key.
Authorization secret required HTTP header
Bearer token in the form: Bearer

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub stars i: 0
Downloads per weeki: 86/wk
Licence i: No licence stated
Connection: Computer or cloud
Transport: stdio, streamable-http
Latest versioni: 1.9.0
Categoryi: Crypto & blockchain
Published to registryi: Oct 8, 2026
Code last changedi: Oct 8, 2026
Maker: cambriannetwork
Packages: npm: cambrian-api-mcp
Repo: cambriannetwork/cambrian-api-mcp
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Open WebUI Raycast

Run on your computer in

All apps, with pros and cons →

What it can do

The server asks you to sign in before it lists its tools.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 11, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account cambriannetwork, which owns the repo
✓ Pass
Still maintained
Code last changed 33 days ago
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 289 ms (HTTP 401)
! Caution
Sign-in with OAuth
Needs a key or token that you copy and paste yourself
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Crypto & blockchaini

More stars than 0% of the other 1638 servers in this category
Published to the registry more recently than 58% of the other 1638 servers in this category
Basic checks equal to or better than 52% of the other 1638 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Cambrian API safe?

It passed 3 of 4 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: CAMBRIAN_API_KEY, Authorization

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed 33 days ago, and the latest version (1.9.0) reached the registry 33 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT Business and above.

What can I use instead?

In the same category: Solana MCP by Vybe, Oracle3 prediction-market arbitrage checks, Polymarket Paper Trader

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Solana MCP by Vybe

Solana MCP developer toolkit: wallets, trades, markets, PnL, transfers, onchain, swaps & API tools.

by vybenetworkWidely used★ 2.6K Stars for the whole repoUpdated 6 months ago

Runs in the cloud

Install

Oracle3 prediction-market arbitrage checks

Kalshi and Polymarket data, venue fees, no-arbitrage checks and paper execution for AI agents.

by YichengYang-EthanGrowing↓ 35/wk★ 568Updated 41 days ago

Runs on your computer

Install

Polymarket Paper Trader

Polymarket paper trading for AI agents: $10k paper money, real order books, official fees.

by agent-nextGrowing↓ 226/wk★ 503Updated 26 days ago

Runs on your computer

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Cambrian API MCP

Model Context Protocol server for the Cambrian API. It exposes the same product surface as the cambrian CLI for agents that need live DeFi, social intelligence, risk, and API documentation tools.

Every call needs a Cambrian API key supplied by the caller. The hosted server and local package both require one; the server never ships or proxies a shared key. Create a key at https://console.cambrian.org/. For x402 pay-per-call access without an API key, use cambrian pay --help; MCP transport still requires a caller-supplied key.

What You Get

a progressive default profile with one concise tool per public Cambrian API endpoint
compact and full profiles for clients with different tool-loading behavior
a composite workflow tool for Solana token snapshots
cambrian_docs for live endpoint and guide docs from https://docs.cambrian.org/llms.txt
stdio transport for local MCP clients
Streamable HTTP transport for hosted and self-hosted deployments

Tool Profiles

Profile	stdio	HTTP	Tool metadata
Progressive (default)	no flag, or `--profile progressive`	`/mcp`	Direct endpoint tools with types, required fields, scalar enums, OpenAPI defaults, numeric bounds, and array item types.
Compact	`--profile compact`	`/mcp/compact`	Three tools: `cambrian_docs`, `cambrian_call`, and `cambrian_solana_token_snapshot`.
Full	`--profile full`	`/mcp/full`	Direct endpoint tools with complete request descriptions, defaults, constraints, and response-size controls.

All profiles use the same progressive documentation flow. cambrian_docs returns the request schema by default. Set detail to response for response fields. The response view also includes the request schema. Set detail to full only for examples and all endpoint prose. The full profile does not preload response documentation for every endpoint.

Progressive omits repeated endpoint descriptions, long patterns, large array enums, and parameter prose. Call cambrian_docs for these details.

Progressive also omits offset, order_asc, and order_desc. These three are the same on every endpoint that has them, and Progressive already strips the per-endpoint sortable-column enum, so repeating them adds about 10 kB to the tool list and tells the agent nothing. The server instructions name them once, and every endpoint still accepts them. limit stays, with its maximum, because it is how an agent bounds a response.

Toolsets

The whole catalog is 159 tools. An agent that only asks about Solana still pays for 116 EVM tools it will never call. Use --toolsets to load only what you need.

Toolset	Tools
`solana`	`cambrian_solana_*` and the Solana token snapshot
`evm`	`cambrian_base_`, `cambrian_ethereum_`, `cambrian_arbitrum_`, and `cambrian_robinhood_`
`deep42`	`cambrian_deep42_*`
`risk`	`cambrian_risk_*`

npx -y cambrian-api-mcp --toolsets solana,risk

CAMBRIAN_TOOLSETS=solana npx -y cambrian-api-mcp

Over HTTP, select per request: https://mcp.cambrian.org/mcp?toolsets=solana.

Omit the option, or pass all, to get every tool. cambrian_docs is always present, so a narrowed client can still discover and read about any endpoint.

Progressive tools/list sizes:

Selection	Tools	Bytes
default (all)	159	39,571
`evm`	117	28,158
`solana`	37	10,904
`deep42`	6	3,663
`risk`	2	2,093

How MCP Clients Load Tools

The MCP client receives the complete tools/list result for the selected profile. MCP does not control how much of that result enters the model context.

Claude Code normally loads tool names and server instructions first. It loads complete selected tool definitions after Tool Search. Codex can do the same when its Tool Search feature is available. Other clients can load every tool definition at the start.

The client loads the definition from the selected profile. It does not restore fields that Progressive omitted. Use cambrian_docs to load the complete request schema, response fields, and examples.

Agent Skill

New users and agent runtimes should start here: skills/cambrian-mcp/SKILL.md. It covers Cambrian API key auth, hosted and local client config, tool naming, cambrian_docs lookup, composite tools, response limits, and error handling in one document.

For the CLI instead of MCP, see the cambrian CLI skill.

Recommended Setup Through The CLI

The cambrian CLI prints and tests ready-to-use MCP client config:

npm install -g cambrian

cambrian mcp config --mode hosted cambrian mcp config --mode local cambrian mcp install --client claude --mode hosted cambrian mcp test --mode hosted

Local stdio

Run the published package directly:

export CAMBRIAN_API_KEY=<your-api-key>

npx -y cambrian-api-mcp

Select another profile only when your MCP client needs it:

npx -y cambrian-api-mcp --profile compact

npx -y cambrian-api-mcp --profile full

Narrow the catalog to the toolsets you need:

npx -y cambrian-api-mcp --toolsets solana,risk

Or install it globally:

npm install -g cambrian-api-mcp

export CAMBRIAN_API_KEY= cambrian-api-mcp

Hosted Streamable HTTP

Use the CLI to print the current hosted URL and client-specific config:

cambrian mcp config --mode hosted

Direct Claude setup:

claude mcp add --transport http cambrian \

https://mcp.cambrian.org/mcp \ --header "Authorization: Bearer YOUR_CAMBRIAN_API_KEY"

Codex config uses TOML:

[mcp_servers.cambrian]

url = "https://mcp.cambrian.org/mcp" bearer_token_env_var = "CAMBRIAN_API_KEY"

The default URL uses the progressive profile. Use https://mcp.cambrian.org/mcp/compact or https://mcp.cambrian.org/mcp/full for another profile.

HTTP requests must include one of:

Authorization: Bearer <CAMBRIAN_API_KEY>

X-Cambrian-Api-Key:

Self-Hosted HTTP

npm install

npm run build node dist/index.js --transport http --host 127.0.0.1 --port 8080

Health endpoint:

curl http://127.0.0.1:8080/health

For hosted deployments, bind to 0.0.0.0:

node dist/index.js --transport http --host 0.0.0.0 --port 8080

Tool Names

Tool names are canonical and prefixed with cambrian_.

Examples:

cambrian_base_dexes
cambrian_ethereum_dexes
cambrian_arbitrum_dexes
cambrian_robinhood_dexes
cambrian_solana_price_current
cambrian_deep42_social_data_alpha_tweet_detection
cambrian_risk_perp_risk_engine
cambrian_docs
cambrian_solana_token_snapshot

Call cambrian_docs without a path to discover the live root index, or use guides/ (for example, guides/x402) for any guide listed there. For an endpoint path, omit detail to get its request schema. Use detail: "response" for response fields and detail: "full" for examples and all endpoint prose.

Endpoint tools come from the same validated runtime registry as the CLI. MCP rechecks that local cache for each tool-list/tool-call request, while OpenAPI network attempts are coalesced and limited to once per source every 15 minutes. If runtime discovery is unavailable, the server uses the endpoint metadata bundled with the installed cambrian package (cambrian/metadata). Tool names, schemas, and argument validation come from cambrian/tools, so each tool sends the same request as the matching cambrian CLI command.

The API serves one generic /api/v1/evm/* surface whose chain_id parameter lists the chains each endpoint supports. The MCP turns that into one fixed-chain tool per supported chain, so an agent never has to remember a magic number and cannot aim an endpoint at a chain it rejects:

Chain	Id	Tool prefix
Base	`8453`	`cambrian_base_*`
Ethereum	`1`	`cambrian_ethereum_*`
Arbitrum	`42161`	`cambrian_arbitrum_*`
Robinhood Chain	`4663`	`cambrian_robinhood_*`

A tool appears for a chain if and only if that endpoint's own chain_id schema allows the chain — from its enum, a fixed minimum/maximum pair, or an exclusive bound. No allowlist and no per-endpoint special case: an endpoint the API widens to include another registered chain ID gains that chain's tools on the next metadata load. Base tools fix chain_id to 8453, Ethereum tools to 1, Arbitrum tools to 42161, and Robinhood tools to 4663.

cambrian_docs accepts an optional chain segment in an EVM path, by id or slug: evm/42161/dexes, evm/arbitrum/dexes, and evm/dexes all resolve the same endpoint, with the chain-scoped forms returning that chain's pinned schema. Robinhood paths also accept evm/4663/dexes and evm/robinhood/dexes.

The chain table comes from the cambrian CLI (EVM_CHAINS in cambrian/tools). src/server.ts adds only cambrian_docs path aliases. To add a chain, add it to the CLI, release the CLI, and bump cambrian here.

Development

npm ci

npm test npm run build npm pack --dry-run

The package depends on the published cambrian package for shared metadata and the API client. Publish cambrian first when changing both packages together, then refresh this package lock and deploy the MCP server through CI/CD.

Deployment

Deployments are handled by GitHub Actions and Cloud Run from the private source repository. Do not deploy manually.

The workflow:

installs dependencies
validates package.json#mcpName matches server.json#name
validates package.json#version matches server.json#version
builds and tests
builds the Docker image
deploys to Cloud Run
smoke-checks staging directly; production is smoke-tested through the public edge URL after DNS and certificate activation

Registry

The official MCP Registry publishes this server under:

io.github.cambriannetwork/cambrian-api

The manifest uses https://mcp.cambrian.org/mcp, which matches the production edge URL. The public release workflow publishes each new Registry version after npm publication.

Cambrian API

Overview

What you can do with it

Install

Sign up and create a Cambrian API key

Open Claude’s Connectors page

Click “+ Add” → “Add custom connector” and fill in these 2 fields

Turn it on in a chat

Try it

What you can do instead

Sign up and create a Cambrian API key

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Sign up and create a Cambrian API key

Click this button to open Cursor

Fill in your key

Open the AI chat in Cursor in Agent mode

Try it

Sign up and create a Cambrian API key

Click this button to open VS Code

Fill in your key

Open the AI chat in VS Code in Agent mode

Try it

Over the web

Installed on your computer

Values you fill in

At a glance

Which apps can use it

Related guides

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Discussion

User reviews

Compared with others in Crypto & blockchaini

Common questions

Alternatives

Solana MCP by Vybe

Oracle3 prediction-market arbitrage checks

Polymarket Paper Trader

README from the maker

Cambrian API MCP

What You Get

Tool Profiles

Toolsets

How MCP Clients Load Tools

Agent Skill

Recommended Setup Through The CLI

Local stdio

Hosted Streamable HTTP

Self-Hosted HTTP

Tool Names

Development

Deployment

Registry