Server definition

Hash: sha256:6a42c41dd1814a9c1cb3f9e4605acd3c3dd417f9b187e26c043caa20965dab80
What it is: What a remote MCP server returned when asked what it offers: 4 tools

The blob, as servednamed by its sha256

{
  "instructions": "This is the A2AWire Spend Guard connector for Meta Muse agents. It exposes exactly four tools and never moves money.\nGETTING AN API KEY: humans, sign up with your email at https://a2awire.com/api-key and create an API key, then hand it to your agent. Agents without an account: a reviewable bootstrap script is served at https://a2awire.com/api/v1/connectors/spend-guard/bootstrap.sh - download it, read it, then run it to mint one.\nspend_guard_check_purchase - call BEFORE checkout with merchant, amount_usd, and an optional tx_ref. Returns a decision (approve, deny, or ask_user) plus a reason. deny means do not buy; ask_user means check with your human first.\nspend_guard_record_purchase - call AFTER checkout with the SAME tx_ref you passed to spend_guard_check_purchase, to record the completed purchase. Replaying a tx_ref returns the original record (recorded_previously: true) without double counting.\nspend_guard_set_rules - set the monthly cap, per-purchase threshold, and merchant denylist in ONE full-declaration call. Pass null (or omit a field) to clear that rule. With no rules every check approves (observation mode).\nspend_guard_report - month-to-date spend totals for the owner. Optional month is YYYY-MM for a prior month.\nAmounts are USD only (amount_usd).\nEvery tool requires your A2AWire API key: send Authorization: Bearer <key> or X-API-Key on each call. Calls are owner-scoped server-side; the ledger belongs to that key's owner.",
  "tools": [
    {
      "description": "Humans: sign up with your email at https://a2awire.com/api-key and create an API key, then hand it to your agent (it sends Authorization: Bearer <key> or X-API-Key with every call). Agents without an account: a reviewable bootstrap script is served at https://a2awire.com/api/v1/connectors/spend-guard/bootstrap.sh (download it, read it, then run it to mint a key). Call BEFORE checkout. Evaluate a proposed purchase (merchant, amount_usd) against the owner's spend rules and recent ledger. Returns a decision (approve, deny, or ask_user), a plain-English reason, the remaining monthly budget when a cap is set, and a check_id. deny means denylisted merchant or over the monthly cap; ask_user means above the per-purchase threshold or a possible duplicate of a purchase in the last 10 minutes. Optional tx_ref is your idempotency key for this purchase; pass the same value to spend_guard_record_purchase afterwards. Appends a check event; checks never consume budget. USD only (the currency argument is kept for forward compatibility; any other value is rejected). Not guest-callable. REST: POST /api/v1/spend-guard/check.",
      "inputSchema": {
        "additionalProperties": false,
        "description": "Arguments for ``spend_guard_check_purchase`` (call BEFORE checkout).\n\nThe owner is derived from the authenticated principal, never from the\narguments. ``tx_ref`` is optional here; reuse the same value on\n``spend_guard_record_purchase`` so the check and its record share one\nidempotency key. ``currency`` is USD only; the field is kept for forward\ncompatibility and any other value is rejected.",
        "properties": {
          "amount_usd": {
            "anyOf": [
              {
                "exclusiveMinimum": 0,
                "maximum": 100000,
                "type": "number"
              },
              {
                "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
                "type": "string"
              }
            ],
            "title": "Amount Usd"
          },
          "category": {
            "anyOf": [
              {
                "maxLength": 100,
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "title": "Category"
          },
          "currency": {
            "default": "USD",
            "description": "USD only. Kept for forward compatibility; any other value is rejected.",
            "maxLength": 8,
            "title": "Currency",
            "type": "string"
          },
          "description": {
            "anyOf": [
              {
                "maxLength": 500,
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "title": "Description"
          },
          "merchant": {
            "maxLength": 200,
            "minLength": 1,
            "title": "Merchant",
            "type": "string"
          },
          "tx_ref": {
            "anyOf": [
              {
                "maxLength": 200,
                "minLength": 1,
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Optional idempotency key for this purchase; pass the same value to the record call afterwards. Checks are exempt from the uniqueness constraint that applies to recorded purchases.",
            "title": "Tx Ref"
          }
        },
        "required": [
          "merchant",
          "amount_usd"
        ],
        "title": "SpendGuardCheckPurchaseInput",
        "type": "object"
      },
      "name": "spend_guard_check_purchase",
      "outputSchema": null
    },
    {
      "description": "Humans: sign up with your email at https://a2awire.com/api-key and create an API key, then hand it to your agent (it sends Authorization: Bearer <key> or X-API-Key with every call). Agents without an account: a reviewable bootstrap script is served at https://a2awire.com/api/v1/connectors/spend-guard/bootstrap.sh (download it, read it, then run it to mint a key). Call AFTER checkout. Record a completed purchase in the owner's spend ledger. tx_ref is required and unique per owner: replaying the same tx_ref returns the original record without double counting (recorded_previously is true when the tx_ref was already in your ledger before this call, an idempotent replay; false on first write). Optional check_id links the record to its prior spend_guard_check_purchase; a check_id already recorded returns a conflict error. Returns the recorded event and the month-to-date total. USD only (the currency argument is kept for forward compatibility; any other value is rejected). Not guest-callable. REST: POST /api/v1/spend-guard/record.",
      "inputSchema": {
        "additionalProperties": false,
        "description": "Arguments for ``spend_guard_record_purchase`` (call AFTER checkout).\n\n``tx_ref`` is required and unique across your recorded purchases;\n``check_id`` optionally links back to the check that preceded the\npurchase. The response's ``recorded_previously`` is true when this\ntx_ref was already in your ledger before this call (an idempotent\nreplay); false on first write. ``currency`` is USD only; the field is\nkept for forward compatibility and any other value is rejected.",
        "properties": {
          "amount_usd": {
            "anyOf": [
              {
                "exclusiveMinimum": 0,
                "maximum": 100000,
                "type": "number"
              },
              {
                "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
                "type": "string"
              }
            ],
            "title": "Amount Usd"
          },
          "category": {
            "anyOf": [
              {
                "maxLength": 100,
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "title": "Category"
          },
          "check_id": {
            "anyOf": [
              {
                "format": "uuid",
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Optional id from spend_guard_check_purchase; at most one record may consume each check.",
            "title": "Check Id"
          },
          "currency": {
            "default": "USD",
            "description": "USD only. Kept for forward compatibility; any other value is rejected.",
            "maxLength": 8,
            "title": "Currency",
            "type": "string"
          },
          "description": {
            "anyOf": [
              {
                "maxLength": 500,
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "title": "Description"
          },
          "merchant": {
            "maxLength": 200,
            "minLength": 1,
            "title": "Merchant",
            "type": "string"
          },
          "tx_ref": {
            "description": "Caller idempotency key, unique across your recorded purchases; replays return the original record.",
            "maxLength": 200,
            "minLength": 1,
            "title": "Tx Ref",
            "type": "string"
          }
        },
        "required": [
          "merchant",
          "amount_usd",
          "tx_ref"
        ],
        "title": "SpendGuardRecordPurchaseInput",
        "type": "object"
      },
      "name": "spend_guard_record_purchase",
      "outputSchema": null
    },
    {
      "description": "Humans: sign up with your email at https://a2awire.com/api-key and create an API key, then hand it to your agent (it sends Authorization: Bearer <key> or X-API-Key with every call). Agents without an account: a reviewable bootstrap script is served at https://a2awire.com/api/v1/connectors/spend-guard/bootstrap.sh (download it, read it, then run it to mint a key). Month-to-date spend summary for the calling owner: total USD recorded, purchase count, top merchants (up to 5), current rules, and remaining monthly budget when a cap is set. Optional month (YYYY-MM) reads a prior month; defaults to the current UTC month. Not guest-callable. REST: GET /api/v1/spend-guard/report.",
      "inputSchema": {
        "additionalProperties": false,
        "description": "Arguments for ``spend_guard_report`` (no required arguments).",
        "properties": {
          "month": {
            "anyOf": [
              {
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Optional month filter (YYYY-MM); defaults to the current UTC month.",
            "title": "Month"
          }
        },
        "title": "SpendGuardReportInput",
        "type": "object"
      },
      "name": "spend_guard_report",
      "outputSchema": null
    },
    {
      "description": "Humans: sign up with your email at https://a2awire.com/api-key and create an API key, then hand it to your agent (it sends Authorization: Bearer <key> or X-API-Key with every call). Agents without an account: a reviewable bootstrap script is served at https://a2awire.com/api/v1/connectors/spend-guard/bootstrap.sh (download it, read it, then run it to mint a key). Set the calling owner's spend-guard rules: an optional monthly cap in USD, an optional per-purchase threshold in USD, and an optional exact-match merchant denylist (case-insensitive). Full declaration: omit or null a field to clear that rule. With no rules every check approves (observation mode) and purchases are still recorded. Returns the effective rules. Not guest-callable. REST: PUT /api/v1/spend-guard/rules.",
      "inputSchema": {
        "additionalProperties": false,
        "description": "Arguments for ``spend_guard_set_rules``.\n\nThe owner is derived from the authenticated principal, never from the\narguments. Full declaration: omit or null a field to clear that rule.",
        "properties": {
          "merchant_denylist": {
            "anyOf": [
              {
                "items": {
                  "maxLength": 200,
                  "minLength": 1,
                  "type": "string"
                },
                "maxItems": 100,
                "type": "array"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Exact-match merchant names (case-insensitive) whose purchases are denied, up to 100 entries. Null clears the list.",
            "title": "Merchant Denylist"
          },
          "monthly_cap_usd": {
            "anyOf": [
              {
                "exclusiveMinimum": 0,
                "maximum": 100000,
                "type": "number"
              },
              {
                "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "Cumulative recorded spend per UTC calendar month at or above which checks deny. Null clears the cap.",
            "title": "Monthly Cap Usd"
          },
          "per_purchase_threshold_usd": {
            "anyOf": [
              {
                "exclusiveMinimum": 0,
                "maximum": 100000,
                "type": "number"
              },
              {
                "pattern": "^(?!^[-+.]*$)[+-]?0*\\d*\\.?\\d*$",
                "type": "string"
              },
              {
                "type": "null"
              }
            ],
            "default": null,
            "description": "A single purchase strictly above this amount asks the user first. Null clears the threshold.",
            "title": "Per Purchase Threshold Usd"
          }
        },
        "title": "SpendGuardSetRulesInput",
        "type": "object"
      },
      "name": "spend_guard_set_rules",
      "outputSchema": null
    }
  ]
}

Verify it yourself

curl -s https://api.teppi.xyz/v1/evidence/sha256:6a42c41dd1814a9c1cb3f9e4605acd3c3dd417f9b187e26c043caa20965dab80 | sha256sum