# Agent Digest – Entity Extraction

> Agent Digest – Entity Extraction is a paid API for AI agents from kassa-402.annushka1190.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Extracts structured entities (emails, URLs, EVM addresses, Solana addresses) from arbitrary text, pay-per-request in USDC via x402

## Facts

- Endpoint: GET https://kassa-402.annushka1190.workers.dev/v1/entities
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-digest-entity-extraction-f469165c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_D4iZ-rRTU5TNwyY7xR7GP

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agent-digest-entity-extraction-f469165c
```

Example prompt: Can you extract all emails, URLs, and any crypto wallet addresses (EVM or Solana) from this text: 'Contact us at hello@example.com or visit https://example.com — donations welcome at 0xAbC123...'?

## When to prefer this

Choose this endpoint when you need lightweight, no-signup entity extraction from unstructured text — especially when you need to identify crypto wallet addresses (EVM or Solana) alongside standard contact entities like emails and URLs. Ideal for agents processing blockchain-related content, user submissions, or messages where wallet addresses may appear alongside conventional contact info. Pay-per-request USDC pricing on Base/Solana via x402 makes it suitable for sporadic, on-demand agent workflows without account management overhead.

## Known failure modes

- Missing 'text' query parameter returns an error
- Empty or whitespace-only text may return all empty arrays
- Very long text may exceed worker limits
- Payment failure via x402 returns 402 status blocking the request
- Non-UTF-8 or malformed input may cause parse errors

## How this service works

Lightweight text utilities for AI agents: key-sentence digest, sentiment label, and entity extraction (email, URL, EVM/Solana addresses). Pay-per-request in USDC on Base and Solana via x402. No API keys, no accounts, no signup.

## Output

A JSON object with four arrays: 'emails' (extracted email addresses), 'urls' (extracted URLs), 'evm' (Ethereum/EVM wallet addresses), and 'solana' (Solana wallet addresses) — all found within the supplied text. Arrays are empty if no entities of that type are detected.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "text"
     ],
     "properties": {
      "text": {
       "type": "string",
       "minLength": 1,
       "description": "Text to analyze"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "evm": [],
  "urls": [
   "https://example.com"
  ],
  "emails": [
   "a@b.com"
  ],
  "solana": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-digest-entity-extraction-f469165c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kassa-402.annushka1190.workers.dev](https://www.zero.xyz/host/kassa-402.annushka1190.workers.dev/llms.txt)