Bankr

Bankr

Execute crypto trading and DeFi operations using natural language. Two integration options:

1. Bankr CLI (recommended) — Install @bankr/cli for a batteries-included terminal experience
2. REST API — Call https://api.bankr.bot directly from any language or tool

Both use the same API key. The API has two layers:

• Wallet API (/wallet/*) — Direct, synchronous endpoints for portfolio, transfers, signing, and transaction submission
• Agent API (/agent/*) — AI-powered async prompt endpoint for natural language operations

Getting an API Key

Before using either option, you need a Bankr API key. Two ways to get one:

Option A: Headless email login (recommended for agents)

Two-step flow — send OTP, then verify and complete setup. See "First-Time Setup" below for the full guided flow with user preference prompts.

# Step 1 — send OTP to email
bankr login email user@example.com

# Step 2 — verify OTP and generate API key (options based on user preferences)
bankr login email user@example.com --code 123456 --accept-terms --key-name "My Agent" --read-write

This creates a wallet, accepts terms, and generates an API key — no browser needed. Before running step 2, ask the user which APIs they need (wallet, agent, both via --read-write, LLM gateway) and their preferred key name.

Option B: Bankr Terminal

1. Visit bankr.bot/api-keys
2. Sign up / Sign in — Enter your email and the one-time passcode (OTP) sent to it
3. Generate an API key — Create a key with Wallet & Agent API access enabled (the key starts with bk_...)

Both options automatically provision EVM wallets (Base, Ethereum, Polygon, Unichain) and a Solana wallet — no manual wallet setup needed.

Option 1: Bankr CLI (Recommended)

Install

bun install -g @bankr/cli

Or with npm:

npm install -g @bankr/cli

First-Time Setup

Headless email login (recommended for agents)

When the user asks to log in with an email, walk them through this flow:

Step 1 — Send verification code

bankr login email <user-email>

Step 2 — Ask the user for the OTP code and all preferences in a single message. This avoids unnecessary back-and-forth. Ask for:

1. OTP code — the code they received via email
2. Accept Terms of Service (REQUIRED) — Present the Terms of Service link and confirm the user agrees. The login command will fail for new users without --accept-terms. You MUST ask for ToS acceptance and do not pass --accept-terms unless the user has explicitly confirmed.
3. Which APIs do they need?
   • Wallet API — enabled by default, use --no-wallet-api to disable
   • Agent API (--agent-api) — AI-powered prompts and natural language operations
   • Token Launch — enabled by default, use --no-token-launch to disable
   • Add --read-write to allow transactions (without it, enabled APIs are read-only)
4. Enable LLM gateway access? (--llm) — multi-model API at llm.bankr.bot (currently limited to beta testers). Skip if user doesn't need it.
5. Key name? (--key-name) — a display name for the API key (e.g. "My Agent", "Trading Bot")

Step 3 — Construct and run the step 2 command with the user's choices. Do NOT execute if the user has not explicitly accepted the Terms of Service — ask again if needed:

# Full access: wallet + agent with write + LLM
bankr login email <user-email> --code <otp> --accept-terms --key-name "My Agent" --agent-api --read-write --llm

# Agent with write access (AI can execute transactions)
bankr login email <user-email> --code <otp> --accept-terms --key-name "Trading Agent" --agent-api --read-write

# Default key (wallet + token launch, read-only)
bankr login email <user-email> --code <otp> --accept-terms --key-name "My Key"

# Agent read-only (research, prices, balances — no transactions)
bankr login email <user-email> --code <otp> --accept-terms --key-name "Research Agent" --agent-api

# LLM-only (no wallet, no token launch)
bankr login email <user-email> --code <otp> --accept-terms --key-name "LLM Client" --no-wallet-api --no-token-launch --llm

Login options reference

New key defaults (when no flags are passed):

Any option not provided on the command line will be prompted interactively by the CLI, so you can mix headless and interactive as needed.

Login with existing API key

If the user already has an API key:

bankr login --api-key bk_YOUR_KEY_HERE

If they need to create one at the Bankr Terminal:

1. Run bankr login --url — prints the terminal URL
2. Present the URL to the user, ask them to generate a bk_... key
3. Run bankr login --api-key bk_THE_KEY

Separate LLM Gateway Key (Optional)

If your LLM gateway key differs from your API key, pass --llm-key during login or run bankr config set llmKey YOUR_LLM_KEY afterward. When not set, the API key is used for both. See references/llm-gateway.md for full details.

Verify Setup

bankr whoami
bankr wallet portfolio
bankr agent prompt "What is my balance?"

Option 2: REST API (Direct)

No CLI installation required — call the API directly with curl, fetch, or any HTTP client.

Authentication

All requests require an X-API-Key header:

curl -X POST "https://api.bankr.bot/agent/prompt" \
  -H "X-API-Key: bk_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "What is my ETH balance?"}'

Quick Example: Submit → Poll → Complete

# 1. Submit a prompt — returns a job ID
JOB=$(curl -s -X POST "https://api.bankr.bot/agent/prompt" \
  -H "X-API-Key: $BANKR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "What is my ETH balance?"}')
JOB_ID=$(echo "$JOB" | jq -r '.jobId')

# 2. Poll until terminal status
while true; do
  RESULT=$(curl -s "https://api.bankr.bot/agent/job/$JOB_ID" \
    -H "X-API-Key: $BANKR_API_KEY")
  STATUS=$(echo "$RESULT" | jq -r '.status')
  [ "$STATUS" = "completed" ] || [ "$STATUS" = "failed" ] || [ "$STATUS" = "cancelled" ] && break
  sleep 2
done

# 3. Read the response
echo "$RESULT" | jq -r '.response'

Conversation Threads

Every prompt response includes a threadId. Pass it back to continue the conversation:

# Start — the response includes a threadId
curl -X POST "https://api.bankr.bot/agent/prompt" \
  -H "X-API-Key: $BANKR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "What is the price of ETH?"}'
# → {"jobId": "job_abc", "threadId": "thr_XYZ", ...}

# Continue — pass threadId to maintain context
curl -X POST "https://api.bankr.bot/agent/prompt" \
  -H "X-API-Key: $BANKR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt": "And what about SOL?", "threadId": "thr_XYZ"}'

Omit threadId to start a new conversation. CLI equivalent: bankr agent prompt --continue (reuses last thread) or bankr agent prompt --thread <id>.

API Endpoints Summary

Wallet API (/wallet/*) — Direct endpoints (synchronous)

• Read endpoints (/wallet/me, /wallet/portfolio) — any valid API key with a wallet
• Swap quote (/wallet/swap-quote) — a quote is a read, so read-only API keys are allowed; API-key callers still need walletApiEnabled
• Write endpoints (/wallet/swap, /wallet/transfer, /wallet/sign, /wallet/submit) — require walletApiEnabled and reject read-only keys. /wallet/transfer also enforces allowedRecipients; /wallet/swap does not (output returns to your own wallet)
• IP allowlist enforced on all endpoints

Recipient & user lookup helpers (public, no auth)

The legacy aliases /public/resolve-recipient and /public/search-users have been removed — use the structured /addresses/resolve and /users/search endpoints instead.

Agent API (/agent/*) — AI-powered endpoints (async)

Public endpoints (no auth required)

Removed legacy endpoints

The following /agent/* endpoints have been removed. Use the /wallet/* equivalents:

For full API details (request/response schemas, job states, rich data, polling strategy), see:

Reference: references/api-workflow.md | references/sign-submit-api.md

CLI Command Reference (v0.3.x)

@bankr/cli 0.2+ organizes commands into three namespaces: wallet, agent, and tokens. Old flat commands (balances, prompt, status, etc.) still work as deprecated aliases.

bankr wallet — Wallet Operations

bankr agent — AI Agent Operations

bankr tokens — Token Discovery

bankr club — Bankr Club Membership

Manage Bankr Club subscription from the CLI (status, signup, cancel). Pay with USDC (default), BNKR, ETH, or any Base ERC-20 — non-USDC/BNKR tokens are swapped to USDC at checkout.

Pricing is $20/mo or $198/yr USD-equivalent. Actual on-chain amount depends on the chosen token's price at quote time. The --token flag was added in CLI 0.3.4; older versions only support USDC.

Monthly → yearly upgrade: active monthly members can upgrade to yearly by asking the agent (e.g. "upgrade me to yearly"). The full yearly price is charged and the new 365-day term stacks on top of any remaining monthly time, so no paid time is lost. Yearly → monthly downgrades and yearly resubscribes are not supported.

Auth & Config Commands

Valid config keys: apiKey, apiUrl, llmKey, llmUrl

Default config location: ~/.bankr/config.json. Override with --config or BANKR_CONFIG env var.

Non-Interactive Mode

For headless environments — CI pipelines, Docker containers, cron jobs — pass the --not-interactive (alias --ni) global flag, or set BANKR_NOT_INTERACTIVE=1. Both forms work before or after the subcommand.

The flag implies --yes on every confirmation prompt and fails fast (exit 1, clear error) when a command would otherwise hang on a required prompt. Use it whenever the user asks for an automated/scripted invocation.

Read-only commands (whoami, wallet portfolio, tokens, agent status, etc.) don't prompt at all — --ni is harmless but redundant.

Examples:

# Cron — claim creator fees nightly
BANKR_PRIVATE_KEY=0x... bankr --ni fees claim-wallet --all

# CI — programmatic token launch (simulate, no broadcast)
bankr --ni launch --name MyToken --symbol MTK --simulate

# Pipeline — agent prompt from stdin
echo "summarize today's trades" | bankr --ni agent prompt

Deprecated Aliases

Old flat commands still work but prefer the namespaced versions:

Environment Variables

Environment variables override config file values. Config file values override defaults.

LLM Gateway Commands

Core Usage

Simple Query

For straightforward requests that complete quickly:

bankr agent prompt "What is my ETH balance?"
bankr agent prompt "What's the price of Bitcoin?"

The CLI handles the full submit-poll-complete workflow automatically. You can also use the shorthand — any unrecognized command is treated as a prompt:

bankr What is the price of ETH?

Interactive Prompt

For prompts containing $ or special characters that the shell would expand:

# Interactive mode — no shell expansion issues
bankr agent prompt
# Then type: Buy $50 of ETH on Base

# Or pipe input
echo 'Buy $50 of ETH on Base' | bankr agent prompt

Conversation Threads

Continue a multi-turn conversation with the agent:

# First prompt — starts a new thread automatically
bankr agent prompt "What is the price of ETH?"
# → Thread: thr_ABC123

# Continue the conversation (agent remembers the ETH context)
bankr agent prompt --continue "And what about BTC?"
bankr agent prompt -c "Compare them"

# Resume any thread by ID
bankr agent prompt --thread thr_ABC123 "Show me ETH chart"

Thread IDs are automatically saved to config after each prompt. The --continue / -c flag reuses the last thread.

Manual Job Control

For advanced use or long-running operations:

# Submit and get job ID
bankr agent prompt "Buy $100 of ETH"
# → Job submitted: job_abc123

# Check status of a specific job
bankr agent status job_abc123

# Cancel if needed
bankr agent cancel job_abc123

LLM Gateway

The Bankr LLM Gateway is a unified API for Claude, Gemini, GPT, Grok, DeepSeek, Qwen, Kimi, MiniMax, GLM, and other models — multi-provider access, cost tracking, automatic failover, and SDK compatibility through a single endpoint.

Base URL: https://llm.bankr.bot | Dashboard: bankr.bot/llm | API Keys: bankr.bot/api-keys

Key Concepts

• Uses your llmKey if configured, otherwise falls back to your API key
• LLM credits (USD) and trading wallet (crypto) are completely separate balances — having crypto does NOT give you LLM credits
• New accounts start with $0 LLM credits — top up via bankr llm credits add 25 or at bankr.bot/llm?tab=credits before making any LLM calls, or you will get a 402 error
• Check credits: bankr llm credits | Top up: bankr llm credits add <amount> | Auto top-up: bankr llm credits auto --enable --amount 25 --tokens USDC
• In OpenClaw config, prefix model IDs with bankr/ (e.g. bankr/claude-sonnet-4.6). In direct API calls, use bare IDs (e.g. claude-sonnet-4.6)
• Per-model discounts available for Bankr Club members and partners — applied automatically at billing time
• Expiring credit grants: promotional or developer grants may carry an expiry date. Your spendable balance is your permanent (purchased) credits plus any unexpired grants — grants are spent first (soonest-expiring first) and drop off automatically at expiry

Quick Commands

bankr llm models                           # List available models
bankr llm credits                          # Check credit balance
bankr llm credits add 25                   # Top up $25 credits (defaults to Base USDC)
bankr llm credits add 25 --token USDT      # Pay USDT on whichever chain holds the most
bankr llm credits add 25 --token ETH       # Native token; auto-swapped on its chain
bankr llm credits auto --enable --amount 25 --tokens USDC,USDT  # Multi-chain auto top-up
bankr llm setup openclaw --install         # Install Bankr provider into OpenClaw
bankr llm setup claude                     # Print Claude Code env vars
bankr llm claude                           # Launch Claude Code through gateway

Agent Credit Top-Up

The AI agent can top up your LLM credits directly in conversation — no CLI or web dashboard needed:

bankr agent prompt "Top up my LLM credits with $25"
bankr agent prompt "Add $10 of LLM credits using my ETH"
bankr agent prompt "How many LLM credits do I have left?"

The agent can also report your current LLM credit balance in conversation — including any expiring grants and when they lapse — without needing the bankr llm credits command.

1 credit = $1 USD. Multi-chain: pay with USDC or USDT directly on Base, Polygon, Ethereum, Arbitrum, or BNB Chain, or with any other ERC-20 (auto-swapped to the chain's preferred stablecoin — USDC on most chains, USDT on BNB). When using --token, the CLI picks the chain with the highest USD balance of that token. Maximum $1,000 per top-up.

Model Deprecation

The gateway supports model deprecation with auto-redirect to replacement models. Deprecated models return X-Model-Deprecated and X-Model-Replacement response headers. Hard-deprecated models return HTTP 410 — update your model ID to the replacement indicated in the header.

For full details — setup paths, model list, provider config, SDK examples, key management, and troubleshooting — see:

Reference: references/llm-gateway.md

Capabilities Overview

Trading Operations

• Token Swaps: Buy/sell/swap tokens across chains
• Cross-Chain: Bridge tokens between chains
• Limit Orders: Execute at target prices
• Stop Loss: Automatic sell protection
• DCA: Dollar-cost averaging strategies
• TWAP: Time-weighted average pricing

Reference: references/token-trading.md

Portfolio Management

• Check balances across all chains (bankr wallet portfolio or GET /wallet/portfolio)
• View USD valuations with optional PnL tracking (--pnl or ?include=pnl)
• View NFT holdings (--nfts or ?include=nfts)
• Track holdings by token or chain
• Real-time price updates
• Multi-chain aggregation
• Filter by chain: bankr wallet portfolio --chain base,solana or GET /wallet/portfolio?chains=base,solana

Reference: references/portfolio.md

Market Research

• Token prices and market data
• Technical analysis (RSI, MACD, etc.)
• Social sentiment analysis
• Price charts
• Trending tokens
• Token comparisons

Reference: references/market-research.md

Transfers

• Send to 0x addresses, ENS-style names (.eth, .base.eth, .cb.id), or social handles
• CLI direct (bankr wallet transfer) accepts 0x addresses + ENS only — social handles go through the AI agent
• Multi-chain support
• Bulk / multi-recipient sends via the agent — same-chain ERC-20 transfers to many recipients batch into a single on-chain transaction (one set of gas)
• Flexible amount formats
• Social handle resolution (Twitter, Farcaster, Telegram) via the agent

Reference: references/transfers.md

NFT Operations

• Browse and search collections
• View floor prices and listings
• Purchase NFTs via OpenSea
• View your NFT portfolio
• Transfer NFTs
• Mint from supported platforms

Reference: references/nft-operations.md

Polymarket Betting

• Search prediction markets
• Check odds
• Place bets on outcomes
• View positions
• Redeem winnings

Reference: references/polymarket.md

Leverage Trading

• Hyperliquid (primary) — Perpetual futures on Hyperliquid L1 with on-chain order book. Crypto, stocks (TSLA, AAPL, NVDA via HIP-3), spot trading. Up to 50x leverage.
• Avantis (secondary) — Perpetuals on Base for crypto (up to 50x), forex and commodities (up to 100x)
• Stop loss, take profit, and position management on both platforms

Reference: references/leverage-trading.md | references/hyperliquid.md

Token Deployment

• EVM (Base, default): Launch ERC20 tokens via Doppler on a Uniswap V4 pool with customizable metadata and social links. Fixed 100 billion supply, 0.7% swap fee split 95% creator / 5% protocol. Tokens deploy to Base by default. Legacy Clanker tokens remain claimable (claims auto-detect Doppler vs Clanker).
• Solana: Launch SPL tokens via Raydium LaunchLab with bonding curve and auto-migration to CPMM
• Creator fee claiming on both chains
• Fee Key NFTs for Solana (50% LP trading fees post-migration)
• Optional fee recipient designation with 99.9%/0.1% split (Solana)
• Both creator AND fee recipient can claim bonding curve fees (gas sponsored)
• Optional vesting parameters (Solana)
• Base launch limits: 50/day standard, 100/day Bankr Club (gas sponsored within limits)
• Tokens deployed through Bankr are always visible in your portfolio, even without market price data

Reference: references/token-deployment.md

Selling your own creator-fee token: Bankr blocks selling a token you earn fees on through the ordinary swap/limit/stop/DCA/TWAP tools (buying and transferring are unaffected). Builders take profit gradually instead via Glidepath — an AI-paced gradual exit managed from the token page at bankr.bot. Glidepath is a web feature; it isn't a CLI/API action. Details: https://docs.bankr.bot/token-launching/glidepath

Automation

• Limit orders
• Stop loss orders
• DCA (dollar-cost averaging)
• TWAP (time-weighted average price)
• Scheduled commands

Reference: references/automation.md

x402 Paid API Calls

The agent can discover, call, and deploy x402-protected API endpoints, automatically handling token payments on Base:

• Discover endpoints in the Bankr registry or via web search
• Inspect endpoint pricing, methods, and input/output schemas
• Call endpoints with automatic payment signing in the endpoint's required token — USDC or any supported ERC-20 (max $10/request)
• Deploy new x402 endpoints directly through the agent (write handler code, set pricing, deploy)
• Price your own endpoints in USDC or any supported ERC-20; revenue settles on-chain and is accounted in USD at settlement time
• Works with any x402-compatible endpoint (Bankr-hosted or external)

Reference: references/x402-cloud.md

Web Browsing

The agent has a built-in headless browser for web interactions:

• Open URLs and navigate web pages
• Read page content, extract data, and take screenshots
• Interact with page elements (click, type, scroll)
• Persist browser sessions across multi-step workflows
• Useful for research, data extraction, and interacting with web apps that don't have APIs

Reference: references/x402-cloud.md

Ask About Bankr

The agent can answer questions about Bankr itself — how features work, official domains and links, the official Telegram bot, and support channels — grounded in Bankr's own documentation. When it doesn't have a confident answer it abstains rather than guessing, so you won't get fabricated links or facts. Useful for onboarding questions and for verifying that a link or channel is genuinely official.

Arbitrary Transactions

• Submit raw EVM transactions with explicit calldata
• Custom contract calls to any address
• Execute pre-built calldata from other tools
• Value transfers with data

Reference: references/arbitrary-transaction.md

Supported Chains

Safety & Access Control

Bankr has two independent layers of safety controls. A transaction must satisfy both to broadcast.

Wallet-Level Security (bankr.bot → Security)

User-controlled settings that apply to every surface — chat, agent, API, CLI. Configured at bankr.bot → Security; requires web authentication (an API key cannot change them).

If USD pricing is unavailable and a limit is enabled, the transaction is rejected (fail-closed) rather than waved through. Your own wallet addresses are always implicitly allowed as recipients.

Protected-Token Swap Guard

Bankr blocks swaps of a small set of protected tokens where swapping is almost always a costly mistake — for example staked positions that should be unwound through their own redeem flow. The block is swap-only: the token stays visible in your portfolio, transferable, and usable with the relevant staking/redeem tools. When a swap is blocked, the agent returns a clear reason pointing you to the correct exit path. This guard applies across the swap/limit/stop/DCA/TWAP tools on the EVM swap paths.

API-Key Level Controls (bankr.bot/api-keys)

Per-key settings configured at bankr.bot/api-keys:

API Key Types: Bankr uses a single key format (bk_...) with capability flags (walletApiEnabled, agentApiEnabled, tokenLaunchApiEnabled, llmGatewayEnabled). You can optionally configure a separate LLM Gateway key via bankr config set llmKey or BANKR_LLM_KEY — useful when you want independent revocation or different permissions for agent vs LLM access.

Read-Only API Keys: New keys default to readOnly: true. This filters all write tools (swaps, transfers, staking, token launches, etc.) from agent sessions. The /wallet/swap, /wallet/sign, /wallet/submit, and /wallet/transfer write endpoints return 403 (the /wallet/swap-quote read endpoint still works). Use --read-write during login or toggle in the web settings to disable. Ideal for monitoring bots and research agents.

IP Whitelisting: Set allowedIps on your API key to restrict usage to specific IPs or CIDR ranges (e.g., 10.0.0.0/24). Requests from non-whitelisted IPs are rejected with 403 at the auth layer.

Recipient Allowlist: Restrict which addresses the key can send funds to. Independent from the wallet-level permitted recipients — when both are configured, both must pass.

Incident Response

If you suspect a key is compromised:

1. Pause the wallet at bankr.bot → Security — halts every outbound transaction immediately
2. Revoke the key at bankr.bot/api-keys
3. Rotate — generate a new key and update deployments
4. Audit — review recent transactions and agent job history before unpausing

General

Dedicated Agent Wallet: When building autonomous agents, create a separate Bankr account rather than using your personal wallet. This isolates agent funds — if a key is compromised, only the agent wallet is exposed. Fund it with limited amounts and replenish as needed.

Rate Limits: 100 messages/day (standard), 1,000/day (Bankr Club), or custom per key. Resets 24h from first message (rolling window). LLM Gateway uses a credit-based system.

Key safety rules:

• Store keys in environment variables (BANKR_API_KEY, BANKR_LLM_KEY), never in source code
• Add ~/.bankr/ and .env to .gitignore — the CLI stores credentials in ~/.bankr/config.json
• Test with small amounts on low-cost chains (Base, Polygon) before production use
• Use waitForConfirmation: true with /wallet/submit — transactions execute immediately with no confirmation prompt
• Rotate keys periodically via the dashboard or API key rotation endpoint, and revoke immediately if compromised at bankr.bot/api-keys

Reference: references/safety.md

Common Patterns

Check Before Trading

# Check balance
bankr wallet portfolio --chain base

# Check price
bankr agent prompt "What's the current price of PEPE?"

# Then trade
bankr agent prompt "Buy $20 of PEPE on Base"

Portfolio Review

# Direct portfolio check (no AI agent, instant response)
bankr wallet portfolio
bankr wallet portfolio --pnl        # Include profit/loss data
bankr wallet portfolio --nfts       # Include NFT holdings
bankr wallet portfolio --all        # PnL + NFTs
bankr wallet portfolio --chain base
bankr wallet portfolio --chain base,solana
bankr wallet portfolio --json

# Via AI agent (natural language, richer context)
bankr agent prompt "Show my complete portfolio"

# Chain-specific
bankr agent prompt "What tokens do I have on Base?"

# Token-specific
bankr agent prompt "Show my ETH across all chains"

Set Up Automation

# DCA strategy
bankr agent prompt "DCA $100 into ETH every week"

# Stop loss protection
bankr agent prompt "Set stop loss for my ETH at $2,500"

# Limit order
bankr agent prompt "Buy ETH if price drops to $3,000"

Market Research

# Token discovery
bankr tokens search PEPE
bankr tokens info USDC

# Price and analysis
bankr agent prompt "Do technical analysis on ETH"

# Trending tokens
bankr agent prompt "What tokens are trending on Base?"

# Compare tokens
bankr agent prompt "Compare ETH vs SOL"

API Workflow

Bankr uses an asynchronous job-based API:

1. Submit — Send prompt (with optional threadId), get job ID and thread ID
2. Poll — Check status every 2 seconds
3. Complete — Process results when done
4. Continue — Reuse threadId for multi-turn conversations

The bankr agent prompt command handles this automatically. When using the REST API directly, implement the poll loop yourself (see Option 2 above or the reference below). For manual job control via CLI, use bankr agent status <jobId> and bankr agent cancel <jobId>.

For details on the API structure, job states, polling strategy, and error handling, see:

Reference: references/api-workflow.md

Synchronous Endpoints (Wallet API)

For direct signing and transaction submission, use the Wallet API synchronous endpoints:

• POST /wallet/sign - Sign messages, typed data, or transactions without broadcasting
• POST /wallet/submit - Submit raw transactions directly to the blockchain
• POST /wallet/transfer - Transfer tokens with symbol resolution and multi-chain support

These endpoints return immediately (no polling required) and are ideal for:

• Authentication flows (sign messages)
• Gasless approvals (sign EIP-712 permits)
• Pre-built transactions (submit raw calldata)
• Programmatic token transfers

Reference: references/sign-submit-api.md

Error Handling

Common issues and fixes:

• Authentication errors → Run bankr login or check bankr whoami (CLI), or verify your X-API-Key header (REST API)
• Insufficient balance → Add funds or reduce amount
• Token not found → Verify symbol and chain
• Transaction reverted → Check parameters and balances
• Rate limiting → Wait and retry

For comprehensive error troubleshooting, setup instructions, and debugging steps, see:

Reference: references/error-handling.md

Best Practices

Security

1. Never share your API key or LLM key
2. Use a dedicated agent wallet with limited funds for autonomou

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