Koskamo

ReceiptRail MCP

ReceiptRail provides on-chain delivery receipts for x402 AI-agent payments on Solana. It allows agents to issue permanent, hash-locked receipts anchored on-chain and verify them independently without trusting the issuer. The server supports tools for issuing receipts, verifying receipt integrity, and checking x402 settlement status.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

ReceiptRail MCP logo, by xka0085-byteCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-06Published by xka0085-byte
You need:no API key, wallet is identity
MCP endpoint (Streamable HTTP)
https://agenttoll-receipts.app.workbuddy.host/mcp
Vendor documentation

What its tools do

3 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Not annotated (3)

3 of 3 have a description · 0 of 3 declare behavior hints · 3 of 3 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Issue on-chain delivery receipts for x402 transactions
  • Verify receipt integrity and settlement status
  • Check x402 receipt format validity

Source and maintenance

Community listingRegistry 0.3.0
mcp-registry: io.github.xka0085-byte/receiptrail@0.3.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
receiptrail 0.3.0
MCP protocol negotiated in check
2025-06-18
Tools
3 advertised
Resources
Not advertised
Resource templates
Not advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {}
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

mcprush.com-10ce8c8e893e0f546960b89b

Tools

3 advertised

issue_receipt — Issue delivery receipt
Advertised by the server during the last successful anonymous check.

Anchor a SHA-256 digest of delivered content plus the x402 settlement reference on Solana. Returns a permanent, publicly verifiable receipt (poll until outcome === "settled"). Costs 0.001 USDC via x402; if x402_payment_signature is omitted, returns the payment challenge instead (pay 0.001 USDC to the service address, then call again with the payment tx signature).

issue_receipt input schema
{
  "type": "object",
  "required": [
    "x402_payment_ref",
    "deliverable_digest"
  ],
  "properties": {
    "buyer": {
      "type": "string",
      "description": "Optional buyer identifier (wallet address)"
    },
    "seller": {
      "type": "string",
      "description": "Optional seller identifier"
    },
    "x402_payment_ref": {
      "type": "string",
      "description": "Unique reference for this transaction (1-128 chars)"
    },
    "deliverable_digest": {
      "type": "string",
      "description": "SHA-256 hex digest (64 chars) of the delivered content"
    },
    "x402_payment_signature": {
      "type": "string",
      "description": "Solana tx signature of the 0.001 USDC payment to the service address. Omit to receive the payment challenge."
    }
  }
}
verify_receipt — Verify delivery receipt
Advertised by the server during the last successful anonymous check.

Verify an AgentToll receipt against live Solana state: PDA owner must be the AgentToll program and the stored digest must match the receipt. Look up by receipt_id, or by x402_payment_ref (always works — the receipt lives on-chain). Read-only, no cost.

verify_receipt input schema
{
  "type": "object",
  "properties": {
    "receipt_id": {
      "type": "string",
      "description": "Receipt id, e.g. r_abcdef1234567890"
    },
    "payment_ref": {
      "type": "string",
      "description": "x402_payment_ref of the transaction (use this if receipt_id unknown; resolved on-chain)"
    }
  }
}
get_receipt — Get receipt details
Advertised by the server during the last successful anonymous check.

Fetch full receipt details: digests, checks, outcome, amount, buyer, seller, timestamp, PDA. Look up by receipt_id, or by x402_payment_ref (always works — the receipt lives on-chain). Read-only, no cost.

get_receipt input schema
{
  "type": "object",
  "properties": {
    "receipt_id": {
      "type": "string",
      "description": "Receipt id, e.g. r_abcdef1234567890"
    },
    "payment_ref": {
      "type": "string",
      "description": "x402_payment_ref of the transaction (use this if receipt_id unknown; resolved on-chain)"
    }
  }
}

Prompts

Not advertised

No prompt definitions available.

Resources

Not advertised

No resource definitions available.

90-day uptime

A lightweight connection check about every six hours, sampled on hosts with many listings. It shows the server answered, not that its tools work.

Too few checks for a percentage yet (1 of 1 answered).

  1. 2026-11-07: 1 of 1 checks answered

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
1702 ms
95th percentile latency
1702 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 1702 ms · metadata changed · 3 tool(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http receiptrail-mcp https://agenttoll-receipts.app.workbuddy.host/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add receiptrail-mcp --url https://agenttoll-receipts.app.workbuddy.host/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable receiptrail-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "receiptrail-mcp": {
      "url": "https://agenttoll-receipts.app.workbuddy.host/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "receiptrail-mcp": {
      "type": "streamableHttp",
      "url": "https://agenttoll-receipts.app.workbuddy.host/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start receiptrail-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "receiptrail-mcp": {
      "type": "http",
      "url": "https://agenttoll-receipts.app.workbuddy.host/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http receiptrail-mcp https://agenttoll-receipts.app.workbuddy.host/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://agenttoll-receipts.app.workbuddy.host/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "receiptrail-mcp": {
      "serverUrl": "https://agenttoll-receipts.app.workbuddy.host/mcp"
    }
  }
}

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