bluepages

Original：🇺🇸 English

Translated

Look up wallet address <> Twitter/Farcaster identity mappings via Bluepages.fyi. Use when asked who owns a wallet, finding addresses for a Twitter/Farcaster handle, looking up 0x addresses, or any wallet identity and address attribution queries.

1installs

Sourcebluepageseth/agent-plugins

Added on2026-02-10

NPX Install

npx skill4agent add bluepageseth/agent-plugins bluepages

SKILL.md Content

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Bluepages

800K+ verified Ethereum address <> Twitter/X mappings, plus Farcaster.

Setup

Requires the Bluepages MCP server:

npx -y github:bluepagesdoteth/bluepages-mcp

or direct API calls (see below). The MCP server is the recommended way to use Bluepages.

Authentication

Requires one of these env vars:

BLUEPAGES_API_KEY
(recommended) — 20% cheaper, 2x rate limits.
PRIVATE_KEY
— Ethereum private key for x402 pay-per-request (USDC on Base).

Security note: Never use a main wallet key. Use a dedicated, funded-only-as-needed agent wallet if providing
PRIVATE_KEY
.

With a private key, you can either pay per request via x402 or purchase a

BLUEPAGES_API_KEY

using the

get_api_key

and

purchase_credits

MCP tools.

Without a private key, the user must get an API key at bluepages.fyi/api-keys and set

BLUEPAGES_API_KEY

.

Tools (quick reference)

Tool	Cost	Description
`check_address`	1 credit ($0.001)	Check if address has data
`check_twitter`	1 credit ($0.001)	Check if Twitter handle has data
`get_data_for_address`	50 credits ($0.05)	Full identity data for address (free if not found)
`get_data_for_twitter`	50 credits ($0.05)	Full identity data for handle (free if not found)
`batch_check`	40 credits ($0.04)	Check up to 50 items at once
`batch_get_data`	40 credits/found item	Data for up to 50 items (x402: $2.00 flat/batch)
`batch_check_streaming`	same as batch_check	For large lists (100+), shows progress
`batch_get_data_streaming`	same as batch_get_data	For large lists (100+), shows progress
`check_credits`	free	Check remaining credits (API key only)
`set_credit_alert`	free	Set low-credit warning threshold (API key only)
`get_api_key`	free	Get/create API key via wallet signature
`purchase_credits`	$5–$600 USDC	Buy credits via x402 (PRIVATE_KEY only)

Input format

Addresses: 0x-prefixed, 42-char hex. Case-insensitive.
Twitter handles: With or without
```
@
```
.

Cost-saving workflow

Single lookups:
```
check_address
```
/
```
check_twitter
```
first (1 credit), then
```
get_data_*
```
only if found (50 credits). Skipping the check wastes credits on misses.
Batch lookups: Always two-phase —
```
batch_check
```
then
```
batch_get_data
```
on found items only. This saves ~90% vs fetching everything blind.
Large lists (100+): Use
```
_streaming
```
variants for progress updates.

Rate limits

API Key: 60 req/min
x402: 30 req/min
Batch: max 50 items per request

Alternative: Direct HTTP API

If MCP is unavailable, call the API directly. Auth depends on your setup:

API key: pass
```
X-API-KEY
```
header
Private key (x402): endpoints return a 402 with payment details; sign and resend with
```
X-PAYMENT
```
header

bash

# With API key
curl "https://bluepages.fyi/check?address=0x..." -H "X-API-KEY: your-key"
curl "https://bluepages.fyi/data?address=0x..." -H "X-API-KEY: your-key"

# Batch check
curl -X POST "https://bluepages.fyi/batch/check" \
  -H "X-API-KEY: your-key" -H "Content-Type: application/json" \
  -d '{"addresses": ["0x...", "0x..."]}'

Full API docs: bluepages.fyi/docs