Agent Receipts
Issue & verify signed (ed25519), hash-chained, timestamped provenance receipts for agent actions.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"agent-receipts": {
"url": "https://agent-receipts.dropwatchhq.com/mcp"
}
}
}Remote endpoints
https://agent-receipts.dropwatchhq.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (3)
⚪issue_receipt(action, agent_id, inputs, outputs, inputs_hash, ...)
Mint a verifiable provenance receipt for an autonomous-agent action. Returns a signed (ed25519), content-hashed (SHA-256), server-timestamped receipt that is hash-chained to this agent's prior receipts (tamper-evident audit trail). Pass the raw inputs/outputs (we hash them — raw data is never stored) OR pre-computed sha256 hashes. Use for compliance, audit trails, and dispute resolution of agentic actions. PAID: $0.01 USDC/call via x402.
Input Schema
{
"type": "object",
"properties": {
"action": {
"type": "string",
"description": "What the agent did, e.g. 'sent_payment' or 'approved_refund' or 'tool_call:search'."
},
"agent_id": {
"type": "string",
"description": "Stable identifier for the acting agent (chains group by this)."
},
"inputs": {
"description": "Raw inputs to the action (any JSON). Hashed to a commitment; raw data not stored."
},
"outputs": {
"description": "Raw outputs/result of the action (any JSON). Hashed to a commitment; raw data not stored."
},
"inputs_hash": {
"type": "string",
"description": "Alternatively, a pre-computed sha256 hex (or 'sha256:<hex>') of inputs."
},
"outputs_hash": {
"type": "string",
"description": "Alternatively, a pre-computed sha256 hex (or 'sha256:<hex>') of outputs."
},
"metadata": {
"type": "object",
"description": "Optional small key/value context (model, version, request id, etc.)."
}
},
"required": [
"action"
]
}⚪verify_receipt(id, receipt)
Verify a receipt by id (or by passing the full receipt object). Recomputes the content hash, confirms the id commits to the body, and checks the ed25519 signature. Returns the verification checks plus the provenance record (action, agent, input/output hashes, timestamp, chain position). FREE.
Input Schema
{
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "Receipt id, e.g. 'rcpt_...'."
},
"receipt": {
"type": "object",
"description": "Alternatively, the full receipt object to verify offline-style."
}
}
}🟢list_receipts(agent_id, limit)
List the receipt hash-chain for an agent_id, newest first (id, action, timestamp, sequence, hashes, verifyUrl). Use to audit everything a given agent has attested. FREE.
Input Schema
{
"type": "object",
"properties": {
"agent_id": {
"type": "string",
"description": "The agent whose receipts to list."
},
"limit": {
"type": "number",
"description": "Max receipts (default 25, max 100)."
}
},
"required": [
"agent_id"
]
}Community
Evidence