# Node.js / TypeScript
npm install @cleerd/sdk

# Python
pip install cleerd

# Go
go get github.com/cleerd/cleerd-go

Each DID document contains the agent's public key, deployer reference, and capability attestations. Resolution is handled via the Cleerd resolver network.

Supported types: AgentIdentityCredential, CapabilityCredential, ConstitutionalComplianceCredential, and DeployerAttestationCredential.

const hash = await cleerd.hashConstitution({
  systemPrompt: agent.systemPrompt,
  constraints: agent.constraints,
})
// => "sha256:a1b2c3d4e5f6..."

Authorization: Bearer <your-api-key>

# Example
curl -H "Authorization: Bearer sk_live_..." \
  https://api.cleerd.com/v1/agents

POST /v1/agents/verify

Accepts a DID or credential presentation and returns a verification result with trust score, credential status, and deployer information.

POST /v1/agents/register

Requires deployer authentication. Returns the agent DID, public key, and a set of verifiable credentials.

npm install @cleerd/sdk

import { Cleerd } from '@cleerd/sdk'
const client = new Cleerd({ apiKey: process.env.CLEERD_API_KEY })

pip install cleerd

from cleerd import Cleerd
client = Cleerd(api_key=os.environ["CLEERD_API_KEY"])

go get github.com/cleerd/cleerd-go

import "github.com/cleerd/cleerd-go"
client := cleerd.New(os.Getenv("CLEERD_API_KEY"))

The MCP server is a thin adapter between Claude and the Cleerd REST API. It manages an in-memory agent session (DID + secp256k1 signing key) and translates MCP tool/resource/prompt requests into API calls. Supports STDIO (Claude Desktop) and SSE transports.

# Run directly (no install needed)
CLEERD_API_KEY=your-key npx @cleerd/mcp-server

# Or install globally
npm install -g @cleerd/mcp-server
cleerd-mcp --api-key your-key

{
  "mcpServers": {
    "cleerd": {
      "command": "npx",
      "args": ["-y", "@cleerd/mcp-server"],
      "env": {
        "CLEERD_API_KEY": "your-api-key"
      }
    }
  }
}

Resources

Prompt Templates

import { cleerd } from '@cleerd/sdk/express'

app.use(cleerd.verify({
  required: true,
  allowedCapabilities: ['read'],
}))

import { withCleerd } from '@cleerd/sdk/lambda'

export const handler = withCleerd(async (event, context) => {
  const agent = context.cleerd.agent
  return { statusCode: 200, body: agent.did }
})

# Add to your pod spec
containers:
  - name: cleerd-sidecar
    image: cleerd/sidecar:latest
    ports:
      - containerPort: 9090
    env:
      - name: CLEERD_API_KEY
        valueFrom:
          secretKeyRef:
            name: cleerd-secrets
            key: api-key