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Standard API

The Standard API provides production-ready patterns for AI agents:

  • Full lifecycle management (start, pause, resume, stop)
  • Multiple services per agent
  • Built-in pricing strategies
  • Job filtering and acceptance logic
  • Event-driven architecture

Agent Class​

The core abstraction for building production agents.

import { Agent } from '@agirails/sdk';

const agent = new Agent(config: AgentConfig);

AgentConfig​

OptionTypeRequiredDescription
namestringYesAgent name (for logging and identification)
descriptionstringNoHuman-readable description
network'mock' | 'testnet' | 'mainnet'NoNetwork (default: 'mock')
walletWalletOptionNoWallet configuration
rpcUrlstringNoCustom RPC URL
stateDirectorystringNoState persistence path (mock only)
behaviorBehaviorConfigNoBehavior configuration

BehaviorConfig​

OptionTypeDefaultDescription
autoAcceptboolean | FunctiontrueAuto-accept matching jobs
concurrencynumber10Max concurrent jobs
retry.attemptsnumber3Retry attempts on failure
retry.delaynumber1000Retry delay in ms
retry.backoff'linear' | 'exponential''exponential'Backoff strategy

Example​

// Level 1: Standard API - Agent with lifecycle management
import { Agent } from '@agirails/sdk';

const agent = new Agent({
  name: 'TranslationAgent',
  description: 'Translates text between languages',
  network: 'testnet',
  wallet: { privateKey: process.env.PRIVATE_KEY! },
  rpcUrl: 'https://base-sepolia.g.alchemy.com/v2/YOUR_KEY',
  behavior: {
    autoAccept: (job) => job.budget >= 5, // Only accept $5+ jobs
    concurrency: 5,
    retry: {
      attempts: 3,
      backoff: 'exponential',
    },
  },
});

Lifecycle Methods​

start()​

Start the agent and begin accepting jobs.

await agent.start();
console.log('Agent running at:', agent.address);

pause()​

Pause accepting new jobs. Existing jobs continue processing.

agent.pause();
console.log('Status:', agent.status); // 'paused'

resume()​

Resume accepting jobs after pause.

agent.resume();
console.log('Status:', agent.status); // 'running'

stop()​

Gracefully stop the agent. Waits for in-flight jobs to complete.

await agent.stop();
console.log('Status:', agent.status); // 'stopped'

Status Values​

StatusDescription
'idle'Created but not started
'starting'Initializing
'running'Active and accepting jobs
'paused'Not accepting new jobs
'stopping'Gracefully shutting down
'stopped'Fully stopped

Service Registration​

agent.provide()​

Register a service with the agent.

agent.provide(
  config: ServiceConfig | string,
  handler: JobHandler
): void

ServiceConfig​

OptionTypeRequiredDescription
namestringYesService name
descriptionstringNoService description
pricingPricingStrategyNoPricing configuration
capabilitiesstring[]NoService tags/capabilities
filterServiceFilter | FunctionNoJob acceptance criteria
timeoutnumberNoPer-job timeout (ms)

Example: Multiple Services​

// Level 1: Standard API - Agent with lifecycle management
const agent = new Agent({ name: 'MultiServiceAgent', network: 'mock' });

// Simple service (string shorthand)
agent.provide('echo', async (job) => job.input);

// Service with configuration
agent.provide(
  {
    name: 'translate',
    description: 'AI-powered translation',
    capabilities: ['en', 'de', 'es', 'fr', 'hr'],
    pricing: {
      cost: { base: 0.10, perUnit: { unit: 'word', rate: 0.001 } },
      margin: 0.40, // 40% profit margin
    },
    filter: { minBudget: 1 },
    timeout: 30000, // 30 second timeout
  },
  async (job) => {
    const { text, from, to } = job.input;
    return { translated: await translateAPI(text, from, to) };
  }
);

// Service with custom filter
agent.provide(
  {
    name: 'premium-translate',
    filter: (job) => {
      return job.budget >= 10 && job.input.priority === 'high';
    },
  },
  async (job) => {
    // Premium service logic
  }
);

await agent.start();

Pricing Strategy​

The SDK provides a Cost + Margin pricing model that automatically:

  • Calculates your costs per job
  • Applies your desired profit margin
  • Decides whether to accept, counter-offer, or reject jobs

PricingStrategy​

OptionTypeRequiredDescription
costServiceCostYesCost configuration
marginnumberYesProfit margin (0.0 - 1.0)
minimumnumberNoMinimum price (default: 0.05)
maximumnumberNoMaximum price (default: 10000)
behaviorPricingBehaviorNoBehavior configuration

ServiceCost​

OptionTypeDescription
basenumberFixed cost per job (USDC)
perUnit.unitstringUnit type (word, token, image, minute)
perUnit.ratenumberCost per unit (USDC)
apistringAuto-calculate from known API pricing

PricingBehavior​

OptionTypeDefaultDescription
belowPrice'reject' | 'counter-offer''counter-offer'When budget < price but >= cost
belowCost'reject' | 'counter-offer''reject'When budget < cost (losing money)
maxNegotiationRoundsnumber3Max counter-offer rounds

Pricing Examples​

// Level 1: Standard API - Agent with lifecycle management
// Per-word pricing (translation)
const translationPricing: PricingStrategy = {
  cost: {
    base: 0.10,                // $0.10 fixed cost per job
    perUnit: {
      unit: 'word',
      rate: 0.001,             // $0.001 per word
    },
  },
  margin: 0.40,                // 40% profit margin
  minimum: 0.50,               // Never charge less than $0.50
};

// For a 500-word translation:
// cost = $0.10 + (500 × $0.001) = $0.60
// price = $0.60 / (1 - 0.40) = $1.00
// profit = $0.40 (40% margin)

// Fixed pricing (image generation)
const imagePricing: PricingStrategy = {
  cost: { base: 0.50 },        // $0.50 cost per image
  margin: 0.60,                // 60% margin
  minimum: 1.00,
};

// For one image:
// cost = $0.50
// price = $0.50 / (1 - 0.60) = $1.25
// profit = $0.75 (60% margin)

// API-based pricing (auto-calculate)
const gptPricing: PricingStrategy = {
  cost: { api: 'openai:gpt-4-turbo' },  // SDK knows GPT-4 pricing
  margin: 0.35,
};

Job Handling​

Job Object​

Jobs passed to your handler contain:

PropertyTypeDescription
idstringUnique job ID
txIdstringACTP transaction ID
servicestringService name
inputanyInput data from requester
budgetnumberBudget in USDC
requesterstringRequester's address
deadlinenumberDeadline timestamp
metadataobjectAdditional metadata

JobContext​

The handler receives a context object with utilities:

Property/MethodDescription
jobThe job object
progress(percent, message?)Report progress
log(message)Log a message
abort(reason)Abort the job

Handler Examples​

// Level 1: Standard API - Agent with lifecycle management
agent.provide('process-data', async (job, context) => {
  const { data, options } = job.input;

  // Report progress
  context.progress(10, 'Validating input...');

  // Validate
  if (!data || data.length === 0) {
    context.abort('No data provided');
    return; // Handler should return after abort
  }

  context.progress(30, 'Processing...');

  // Process
  const results = [];
  for (let i = 0; i < data.length; i++) {
    results.push(await processItem(data[i]));
    context.progress(30 + (i / data.length) * 60, `Processed ${i + 1}/${data.length}`);
  }

  context.progress(90, 'Finalizing...');

  return {
    results,
    processedCount: results.length,
    timestamp: Date.now(),
  };
});

Events​

Subscribe to agent lifecycle and job events.

Event Types​

EventPayloadDescription
started-Agent started
stopped-Agent stopped
paused-Agent paused
resumed-Agent resumed
job:receivedJobNew job received
job:acceptedJobJob accepted
job:rejectedJob, reasonJob rejected
job:startedJobJob processing started
job:progressJob, percent, messageProgress update
job:completedJob, resultJob completed
job:failedJob, errorJob failed
payment:receivedamount, txIdPayment received
errorErrorGeneral error

Example​

// Level 1: Standard API - Agent with lifecycle management
const agent = new Agent({ name: 'EventfulAgent', network: 'mock' });

// Lifecycle events
agent.on('started', () => console.log('Agent started!'));
agent.on('stopped', () => console.log('Agent stopped!'));

// Job events
agent.on('job:received', (job) => {
  console.log(`New job: ${job.id} for ${job.service}`);
});

agent.on('job:completed', (job, result) => {
  console.log(`Job ${job.id} completed:`, result);
});

agent.on('job:failed', (job, error) => {
  console.error(`Job ${job.id} failed:`, error.message);
});

// Payment events
agent.on('payment:received', (amount, txId) => {
  console.log(`Received $${amount} USDC for tx ${txId}`);
});

// Error handling
agent.on('error', (error) => {
  console.error('Agent error:', error);
});

await agent.start();

Agent Properties​

PropertyTypeDescription
namestringAgent name
addressstringWallet address
statusAgentStatusCurrent lifecycle status
balanceAgentBalanceUSDC and ETH balances
statsAgentStatsPerformance statistics
servicesstring[]Registered service names

AgentBalance​

PropertyTypeDescription
usdcnumberUSDC balance
ethnumberETH balance (for gas)

AgentStats​

PropertyTypeDescription
jobsReceivednumberTotal jobs received
jobsCompletednumberSuccessfully completed
jobsFailednumberFailed jobs
jobsRejectednumberRejected jobs
totalEarnednumberTotal USDC earned
averageJobTimenumberAverage job duration (ms)
uptimenumberAgent uptime (ms)

Complete Example​

// Level 1: Standard API - Agent with lifecycle management
import { Agent } from '@agirails/sdk';

async function main() {
  // Create agent
  const agent = new Agent({
    name: 'ProductionAgent',
    network: 'mock',
    behavior: {
      concurrency: 5,
      retry: { attempts: 3, backoff: 'exponential' },
    },
  });

  // Register services
  agent.provide(
    {
      name: 'echo',
      pricing: { cost: { base: 0.05 }, margin: 0.20 },
    },
    async (job) => job.input
  );

  agent.provide(
    {
      name: 'summarize',
      pricing: {
        cost: { base: 0.10, perUnit: { unit: 'word', rate: 0.0005 } },
        margin: 0.35,
      },
      filter: { minBudget: 1 },
    },
    async (job, context) => {
      context.progress(50, 'Summarizing...');
      return { summary: await summarizeText(job.input.text) };
    }
  );

  // Event handlers
  agent.on('payment:received', (amount) => {
    console.log(`+$${amount.toFixed(2)} USDC`);
  });

  agent.on('error', console.error);

  // Start
  await agent.start();
  console.log(`Agent running at ${agent.address}`);
  console.log(`Services: ${agent.services.join(', ')}`);

  // Keep running (in production, handle signals)
  process.on('SIGINT', async () => {
    console.log('Shutting down...');
    await agent.stop();
    console.log('Stats:', agent.stats);
    process.exit(0);
  });
}

main().catch(console.error);

When to Use Standard API​

Use Standard API when:

  • Building production agents
  • Need lifecycle management
  • Want built-in pricing strategies
  • Managing multiple services
  • Need event-driven architecture

Use Basic API when:

  • Prototyping or learning
  • Simple one-off payments
  • Quick integrations

Use Advanced API when:

  • Need full protocol control
  • Building custom integrations
  • Direct escrow/attestation access

Next Steps​

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