# Handsigned

> Handsigned is a paid API for AI agents from handsignd.com, paid per call via x402, $25/call, status unknown (last checked 2026-09-15).

Submit a question and receive a human-answered response with a signed receipt, reviewed by a human at 6 PM Pacific (within 24 hours), for $25 USDC.

## Facts

- Endpoint: POST https://handsignd.com/api/v1/ask
- Price: $25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/handsigned-3fe9a4aa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lgnk_OguX4JsBSCbBEf_1

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 handsigned-3fe9a4aa -d '<json body>'
```

Example prompt: I need a real human answer to this question — not an AI guess — with a signed receipt confirming it was reviewed: 'Is the permit process in San Francisco for a backyard ADU actually as painful as people say, or has it improved recently?' Here's some context: I'm planning to build a 400 sq ft unit and want an honest local take before I commit.

## When to prefer this

Choose this endpoint when you need a genuine human answer backed by lived experience, local knowledge, or nuanced judgment — situations where AI responses are unreliable, contested, or untrustworthy. Particularly valuable when a signed receipt confirming human review is needed, or when the question involves hyperlocal facts, professional judgment calls, or subjective expertise that LLMs hallucinate. Not suitable for factual lookups with clear authoritative sources, real-time data, or bulk question answering.

## Known failure modes

- Question is too ambiguous or broad for a single human answer — may receive a clarification request or partial answer
- Callback URL is unreachable — answer may not be delivered asynchronously
- Payment of $25 USDC not processed — request not accepted
- Answer delayed if submitted after the 6 PM Pacific cutoff — next review cycle within 24 hours
- Question falls outside the scope of human judgment or local experience the service can provide

## How this service works

One question, one human answer from judgment or local experience, returned with a signed receipt. $25. Answered at the next 6 PM Pacific review, so within 24 hours.

## Output

A human-written answer to your submitted question, informed by judgment or local experience, accompanied by a signed receipt confirming human review. The answer is delivered within 24 hours, at the next 6 PM Pacific review cycle. Optional callback URL can be provided for async delivery.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "context": {
   "type": "string"
  },
  "question": {
   "type": "string"
  },
  "callback_url": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/handsigned-3fe9a4aa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from handsignd.com](https://www.zero.xyz/host/handsignd.com/llms.txt)