P0: agent memory and utilities

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          "alsoAccepted": "USDT0 on Arbitrum; sBTC on Stacks",
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        "complete": true,
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            "usd": 0.001,
            "what": "Use when an agent needs memory between runs without an",
            "route": "/kv/put"
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            "usd": 0.001,
            "what": "Use when an agent needs a value it stored earlier with",
            "route": "/kv/get"
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          {
            "usd": 0.001,
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            "route": "/kv/list"
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            "usd": 0.001,
            "what": "fresh UUIDs",
            "route": "/util/uuid"
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            "what": "a checksum or digest of a string",
            "route": "/util/hash"
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          {
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            "route": "/util/ip"
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          {
            "usd": 0.001,
            "what": "to inspect a JWT without a key",
            "route": "/util/jwt-decode"
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            "what": "to check that a JSON document fits a schema before acting",
            "route": "/util/json-validate"
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            "route": "/util/base64"
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            "usd": 0.001,
            "what": "time, time zone, UTC, time conversion",
            "route": "/time"
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            "usd": 0.001,
            "what": "random, random number, verifiable random, drand",
            "route": "/random"
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            "what": "x402 test, payment test",
            "route": "/x402-ping"
          },
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            "usd": 0.001,
            "what": "x402 debugging, payment test",
            "route": "/x402-echo"
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        ]
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    },
    "title": "P0: agent memory and utilities",
    "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
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    "version": "1.0.2",
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    "description": "Key-value memory without an account, UUID, hash, JWT, JSON validation, time and random"
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