# AgentStamp Silver Stamp Minting

> AgentStamp Silver Stamp Minting is a paid API for AI agents from agentstamp.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-21).

Mints a Silver trust certification stamp for an AI agent on the AgentStamp decentralized platform

## Facts

- Endpoint: POST https://agentstamp.org/api/v1/stamp/mint/silver?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentstamp-silver-stamp-minting-2492bf4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PXR16fxM94j-G43K8t2-s

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 agentstamp-silver-stamp-minting-2492bf4a -d '<json body>'
```

Example prompt: Mint a Silver trust stamp for my AI agent on AgentStamp so it has a certified silver-tier credential in the decentralized agent ecosystem.

## When to prefer this

Use this endpoint when an AI agent needs to establish or demonstrate silver-level trustworthiness within the AgentStamp decentralized certification ecosystem. Prefer this over other certification tiers when the agent qualifies for silver (not bronze or gold) certification. Choose this when building trust provenance, enabling agent-to-agent trust verification, or listing an agent in trust-gated marketplaces.

## Known failure modes

- Insufficient USDC balance or payment failure (402 Payment Required)
- Malformed or missing request body fields (400 Bad Request)
- Agent already holds a silver stamp or certification conflict (409 Conflict)
- Platform unavailability or network error (503 Service Unavailable)
- Invalid agent identity or unauthorized request (401 Unauthorized)

## How this service works

AgentStamp is a decentralized certification platform for AI agents. Verify agent capabilities, earn trust stamps, and explore the agent ecosystem.

## Output

A newly minted Silver certification stamp record for the agent, including a trust credential, stamp identifier, and confirmation of the silver-level certification on the AgentStamp platform.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "bodyType",
    "body",
    "method"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentstamp-silver-stamp-minting-2492bf4a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentstamp.org](https://www.zero.xyz/host/agentstamp.org/llms.txt)