spArxx.io | Zero-Knowledge Blockchain Timestamping

Server Details

Built for human creators. Register a timestamp on Polygon proving you made something, the moment you did. Your file is never uploaded, watermarked, or altered: only its cryptographic fingerprint ever reaches spArxx.io, zero-knowledge by design. A human still provisions the account behind the connection. This is deliberate, since this registration only means something with a human behind it.

Ownership verified

The last two health checks of this connector failed. If this server requires authentication, missing or expired test credentials may be the cause. A test profile lets Glama authenticate for health checks and discover tools; it is separate from your personal connections.

If you are the author, claim ownership, then add or update a test profile under Admin → Test Profile.

Status: Unhealthy
Uptime: 84.4% over 41 days
OAuth: Works in Glama
Last Tested: 2026-10-21 07:29
Transport: Streamable HTTP
URL

TDQS

A3.9/5.0

Scored 2026-10-07 08:55 across 6 tools

Disambiguation4/5

Each tool targets a distinct operation: create, read (get/list evidence), verify, and cost lookups. The only mild overlap is verify_certificate vs. get_evidence, since both surface receipt data, though their intended purposes and auth requirements are clearly described.

Naming Consistency5/5

All six tools follow a clean verb_noun snake_case pattern (create_timestamp, get_balance, get_evidence, get_pricing, list_evidence, verify_certificate). The only wrinkle is descriptions referencing internal names like 'timestamp_register', but the actual tool names are fully consistent.

Tool Count5/5

Six tools is well-scoped for a timestamping service covering the create-poll-verify workflow plus cost pre-checks. Each tool earns its place with no redundant surface.

Completeness4/5

Core lifecycle is covered: create a timestamp, list evidence, fetch a full receipt kit, verify proofs, and check pricing/balance. Logically immutable records need no delete/update, so the only minor gap is any explicit status-check tool separate from get_evidence.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

4 tool updatesOct 7, 2026

Changedcreate_timestamp1 field changed

changedOutput schema / properties / data / properties / cost_deducted / description

Previous value: -"Actual spArks deducted for this call. Dynamic. Driven by the TIMESTAMP_COST env var (default 25), not a fixed 1 spark."New value: +"Actual spArks deducted for this call. Dynamic: TIMESTAMP COST or AGENTIC TIMESTAMP COST depending on channel (see get_pricing), not a fixed 1 spark."

Changedget_evidence2 fields changed

changedInput schema / properties / pathParams / properties / id / description

Previous value: -"evidence_id returned by create_timestamp or list_evidence."New value: +"evidence_id returned when a timestamp is created, or from list_evidence."

changedOutput schema / properties / data / properties / custody_status / description

Previous value: -"Custody tier (BLUEPRINT.md). MVP is self-custody only. The client is responsible for keeping this receipt with the original file."New value: +"Custody tier. MVP is self-custody only. The client is responsible for keeping this receipt with the original file."

Changedget_pricing2 fields changed

changedOutput schema / properties / data / properties / service_costs / properties / timestamp_register / description

Previous value: -"Standard spArks cost of a create_timestamp call (TIMESTAMP_COST env var, default 25)."New value: +"Standard spArks cost of creating a timestamp: applies when a person creates one in the spArxx.io web or mobile apps, and to standard API calls (TIMESTAMP COST, currently 25, promotional)."

changedOutput schema / properties / data / properties / service_costs / properties / timestamp_register_agentic / description

Previous value: -"spArks cost of a create_timestamp call made via an MCP agent key (AGENTIC_TIMESTAMP_COST env var, default 20). This is a flat service rate for this channel, not a discount on spArks themselves."New value: +"spArks cost when an AI agent creates the timestamp itself through an MCP agent connection (AGENTIC TIMESTAMP COST, currently 20, promotional). This is a flat service rate for this channel, not a discount on spArks themselves. If this connection doesn't let you create timestamps, quote timestamp_register instead: the person will create it in the spArxx.io apps at the standard rate."

Changedlist_evidence1 field changed

changedOutput schema / properties / data / items / properties / origin_channel / description

Previous value: -"Set to 'mcp_agent' when this item was created via an MCP agent key; null otherwise (web/mobile channel tracking is not yet implemented. See EVIDENCE_CUSTODY_TRACKING_BLUEPRINT.md)."New value: +"Set to 'mcp_agent' when this item was created via an MCP agent key; null otherwise (web/mobile channel tracking is not yet implemented)."

1 tool updateSep 19, 2026

Changedget_evidence7 fields changed

addedOutput schema / properties / data / properties / blockchain / anyOf

Added value: +[
+  {
+    "properties": {
+      "block_height": {
+        "anyOf": [
+          {
+            "type": "integer"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Decimal block number the transaction was mined in."
+      },
+      "contract_address": {
+        "description": "The TimestampRegistry contract address that storeHash(bytes32) was called on.",
+        "type": "string"
+      },
+      "explorer_url": {
+        "format": "uri",
+        "type": "string"
+      },
+      "network": {
+        "type": "string"
+      },
+      "tx_hash": {
+        "type": "string"
+      }
+    },
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / data / properties / blockchain / description

Previous value: -"Present only once status is 'submitted' and a transaction hash exists."New value: +"Present only once status is 'submitted' and a transaction hash exists; null otherwise."

removedOutput schema / properties / data / properties / blockchain / properties

Removed value: -{
-  "block_height": {
-    "anyOf": [
-      {
-        "type": "integer"
-      },
-      {
-        "type": "null"
-      }
-    ],
-    "description": "Decimal block number the transaction was mined in."
-  },
-  "contract_address": {
-    "description": "The TimestampRegistry contract address that storeHash(bytes32) was called on.",
-    "type": "string"
-  },
-  "explorer_url": {
-    "format": "uri",
-    "type": "string"
-  },
-  "network": {
-    "type": "string"
-  },
-  "tx_hash": {
-    "type": "string"
-  }
-}

removedOutput schema / properties / data / properties / blockchain / type
```
Removed value: -"object"
```

addedOutput schema / properties / data / properties / receipt_data / anyOf

Added value: +[
+  {
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

changedOutput schema / properties / data / properties / receipt_data / description

Previous value: -"Structured receipt payload (shape varies: includes identity_claim block also surfaced publicly via verify_certificate)."New value: +"Structured receipt payload (shape varies: includes identity_claim block also surfaced publicly via verify_certificate). Null until status is 'submitted'."

removedOutput schema / properties / data / properties / receipt_data / type
```
Removed value: -"object"
```

3 tool updatesSep 18, 2026
- Changedcreate_timestamp8 fields changed
  - addedInput schema / properties / body / properties / codename / anyOf
```
Added value: +[
+  {
+    "maxLength": 100,
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedInput schema / properties / body / properties / codename / description
```
Removed value: -"Optional human-friendly label for the timestamped item."
```
  - addedInput schema / properties / body / properties / disclose_identity / anyOf
```
Added value: +[
+  {
+    "type": "boolean"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedInput schema / properties / body / properties / disclose_identity / description
```
Removed value: -"Per-transaction override for whether this certificate's verify page/API/manifest discloses the account's name and email together, or withholds both. Omit to inherit the account's stored disclose_identity_default preference (defaults to true if never set). Ghost/guest accounts always withhold identity regardless of this value ... there is no toggle for them."
```
  - addedInput schema / properties / body / properties / mime_type / anyOf
```
Added value: +[
+  {
+    "maxLength": 100,
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedInput schema / properties / body / properties / mime_type / description
```
Removed value: -"Optional MIME type of the file (e.g., 'audio/wav', 'image/png'), if known. Purely informational, and stored with the evidence record, not independently verified against file content."
```
  - addedInput schema / properties / body / properties / original_file_name / anyOf
```
Added value: +[
+  {
+    "maxLength": 255,
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedInput schema / properties / body / properties / original_file_name / description
```
Removed value: -"Optional: the file's original name, if different from file_name (e.g., before local renaming). Purely informational, stored with the evidence record."
```
- Changedget_evidence14 fields changed
  - addedOutput schema / properties / data / properties / blockchain / properties / block_height / anyOf
```
Added value: +[
+  {
+    "type": "integer"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / properties / blockchain / properties / block_height / type
```
Removed value: -[
-  "integer",
-  "null"
-]
```
  - addedOutput schema / properties / data / properties / file / properties / original_name / anyOf
```
Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / properties / file / properties / original_name / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
  - addedOutput schema / properties / data / properties / file / properties / size / anyOf
```
Added value: +[
+  {
+    "type": "integer"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / properties / file / properties / size / type
```
Removed value: -[
-  "integer",
-  "null"
-]
```
  - addedOutput schema / properties / data / properties / origin_channel / anyOf
```
Added value: +[
+  {
+    "enum": [
+      "mcp_agent"
+    ],
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / properties / origin_channel / enum
```
Removed value: -[
-  "mcp_agent",
-  null
-]
```
  - removedOutput schema / properties / data / properties / origin_channel / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
  - addedOutput schema / properties / data / properties / public_verify_url / anyOf
```
Added value: +[
+  {
+    "format": "uri",
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / properties / public_verify_url / format
```
Removed value: -"uri"
```
  - removedOutput schema / properties / data / properties / public_verify_url / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
  - addedOutput schema / properties / data / properties / verification_instructions / anyOf
```
Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / properties / verification_instructions / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
- Changedlist_evidence14 fields changed
  - addedOutput schema / properties / data / items / properties / blockchain_tx_hash / anyOf
```
Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / items / properties / blockchain_tx_hash / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
  - addedOutput schema / properties / data / items / properties / explorer_url / anyOf
```
Added value: +[
+  {
+    "format": "uri",
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / items / properties / explorer_url / format
```
Removed value: -"uri"
```
  - removedOutput schema / properties / data / items / properties / explorer_url / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
  - addedOutput schema / properties / data / items / properties / file_size / anyOf
```
Added value: +[
+  {
+    "type": "integer"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / items / properties / file_size / type
```
Removed value: -[
-  "integer",
-  "null"
-]
```
  - addedOutput schema / properties / data / items / properties / mime_type / anyOf
```
Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / items / properties / mime_type / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
  - addedOutput schema / properties / data / items / properties / origin_channel / anyOf
```
Added value: +[
+  {
+    "enum": [
+      "mcp_agent"
+    ],
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / items / properties / origin_channel / enum
```
Removed value: -[
-  "mcp_agent",
-  null
-]
```
  - removedOutput schema / properties / data / items / properties / origin_channel / type
```
Removed value: -[
-  "string",
-  "null"
-]
```
  - addedOutput schema / properties / data / items / properties / original_file_name / anyOf
```
Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]
```
  - removedOutput schema / properties / data / items / properties / original_file_name / type
```
Removed value: -[
-  "string",
-  "null"
-]
```

6 tool updatesSep 13, 2026

Changedcreate_timestamp6 fields changed

changedInput schema / properties / body / description

Previous value: -"Exactly one of file_hash/client_hash and exactly one of file_size/file_size_bytes must be present — they are aliases kept for client compatibility, not two different values."New value: +"Exactly one of file_hash/client_hash and exactly one of file_size/file_size_bytes must be present. These are aliases kept for client compatibility, not two different values."

changedInput schema / properties / body / properties / disclose_identity / description

Previous value: -"Whether this certificate's verify page/API/manifest should disclose the account's name and email together, or withhold both. Omit to inherit the account's own disclose_identity_default preference. Ignored for Ghost/unclaimed accounts, which are always anonymous regardless of this value."New value: +"Per-transaction override for whether this certificate's verify page/API/manifest discloses the account's name and email together, or withholds both. Omit to inherit the account's stored disclose_identity_default preference (defaults to true if never set). Ghost/guest accounts always withhold identity regardless of this value ... there is no toggle for them."

addedInput schema / properties / body / properties / file_name / description

Added value: +"The file's name as the caller knows it (e.g., 'final_mix.wav'). Used for display and is included in the receipt kit. Required; not used to derive mime_type or validate the hash."

addedInput schema / properties / body / properties / mime_type / description

Added value: +"Optional MIME type of the file (e.g., 'audio/wav', 'image/png'), if known. Purely informational, and stored with the evidence record, not independently verified against file content."

addedInput schema / properties / body / properties / original_file_name / description

Added value: +"Optional: the file's original name, if different from file_name (e.g., before local renaming). Purely informational, stored with the evidence record."