OnChainDiligence

com.onchaindiligencePublished by onchaindiligence.comOfficial publisherv1.2.0Updated Nov 8, 2026

Payment evidence and policy preflight, plus paid sanctions and company Evidence Provider checks.

VerifiedStreamable HTTPWeb executableFinanceSecurity & MonitoringBusiness & Commerce

Overview

AI-generated overview

Remote MCP server for crypto payment policy preflight, signed receipts, and OFAC sanctions and company verification checks.

What you can do
  • Screen wallets and names against the OFAC SDN list, and verify UK Companies House and US SEC EDGAR company records
  • Run combined counterparty diligence on an EVM wallet plus a UK company in one call
  • Inspect proposed payments, ERC-20 allowances, swaps, bridges and staking against structured policy, and preflight them for signed ALLOW, REQUIRE_APPROVAL or BLOCK receipts
  • Observe submitted Base or Ethereum transactions to confirm allowance, swap, bridge and staking actions match the authorized preflight
  • Look up and cryptographically verify public OCD receipts by id or by passing a full receipt envelope
When to use it
Use it when an agent or workflow needs to check counterparties against sanctions and company registers, or to gate autonomous crypto payments, allowances, swaps, bridges and staking with policy decisions and verifiable receipts before a wallet acts.
Requirements
A remote streamable HTTP endpoint; no package install. No authentication, environment variables or headers are declared. Some tools are free, while screening, company verification, diligence and preflight tools are described as paid Evidence Provider checks.
Before you install
Several tools are paid, so calls may incur charges. Preflight ALLOW results are policy decisions only and never wallet authority; the server does not execute transactions. Screening covers only the US OFAC SDN list, not EU, UN or UK lists or ownership rules, and is an aid rather than a compliance determination. Receipt verification is a convenience check, and private receipts are indistinguishable from unknown ids.

Installation

In SourceWeft

  1. Open OnChainDiligence in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.onchaindiligence%2Fcompliance/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "onchaindiligence": {
      "type": "http",
      "url": "https://mcp.onchaindiligence.com/mcp"
    }
  }
}

README

This repository has no README.

Tools

21

screen_wallet

Exact match of an EVM wallet address against the digital currency address identifiers on the official US Treasury OFAC SDN List (validated snapshot, refreshed hourly). Returns signed listed / not_listed, the SDN entry, dataset provenance and limits. SDN only: not EU/UN/UK lists, no ownership or 50% rule analysis; a non-match is not legal clearance. Refused before payment if current data is unavailable. Call before sending funds to an address.

Parametersaddressrequired

screen_name

OFAC name screening: fuzzy-match a person or company name against the official US Treasury OFAC Specially Designated Nationals (SDN) list (primary names + strong aliases). Returns scored candidate matches with the matched name, SDN type, and program. SCOPE: this is a screening aid for AML / KYC / sanctions compliance — a match is a candidate to investigate with secondary identifiers (DOB, nationality, ID), NOT a determination. Weak AKAs are not screened, per OFAC guidance.

Parametersnamerequiredthreshold

verify_uk_company

UK company KYB lookup via the official Companies House register. Given a UK registration number, returns legal status (active/dissolved), company type, incorporation date, registered office, and people with significant control (PSC / beneficial owners). Call to confirm a UK business is real, active, and who controls it, for KYB onboarding and counterparty due diligence. Authoritative UK government data.

ParameterscompanyNumberrequired

verify_us_company

US public company verification via SEC EDGAR. Given a ticker, CIK, or company name, returns entity name, CIK, industry (SIC), state of incorporation, exchanges/tickers, address, and latest SEC filing. Ambiguous names return candidates, never a silent selection. Covers SEC-registered PUBLIC companies and funds only -- not private US companies. Call for KYB and counterparty due diligence on listed US entities.

Parametersqueryrequired

diligence

Combined counterparty due diligence in one call: an exact OFAC SDN digital-currency-address screen of an EVM wallet AND a UK Companies House KYB lookup (status, type, PSC / beneficial owners), in parallel. Returns both independent results plus an explicit disclaimer that no verified link between the wallet and the company is established by the data. SDN only; a non-match is not clearance. Refused before payment if current sanctions data is unavailable.

Parameterswalletrequiredcompanyrequired

preflight_payment

Call BEFORE an agent authorizes an autonomous payment. Evaluates it against your policy (max amount, allowed networks/assets, expected recipient, allowed origins) and returns a signed PREFLIGHT receipt -- ALLOW, REQUIRE_APPROVAL, or BLOCK, with reasons -- independently verifiable by anyone. Policy evaluation only: OCD never holds, moves, or authorizes funds. The wallet/x402 client separately authorizes execution after; ALLOW does not guarantee it will proceed.

Parametersactionrequiredpolicyrequiredoptionsreferences

inspect_payment

FREE. Pure deterministic inspection of a proposed payment against structured policy (amount/network/asset/recipient/resource) — no external evidence, no sanctions screening, no cryptographic signing, no receipt. Returns the same ALLOW / REQUIRE_APPROVAL / BLOCK decision semantics as POST /x402/preflight-payment for the deterministic checks alone, so a caller can sanity-check a proposal before deciding whether the paid preflight (adds optional sanctions evidence and a signed, independently-verifiable receipt, $0.01) is worth paying for. This result is NOT cryptographically attested and carries no receipt — receipt is always null.

Parametersactionrequiredpolicyrequired

inspect_allowance

FREE. Deterministically inspect an ERC-20 allowance/revocation request against explicit network/token/spender/value policy. No wallet action, no signing, no chain read unless a separately requested preflight asks for it.

Parametersactionrequiredpolicyrequiredoptions

preflight_allowance

Call BEFORE an agent asks its wallet to approve or revoke a Base USDC ERC-20 allowance. OCD evaluates strict policy and returns a signed portable allowance artifact. ALLOW is policy only, never wallet authority.

Parametersactionrequiredpolicyrequiredoptions

observe_allowance

Given a signed OCD allowance preflight artifact and submitted Base transaction hash, independently inspect its canonical-USDC Approval event, Base safe-head finality, and historical allowance state. OCD never executes the transaction.

Parametersartifacttransaction_hashrequired

inspect_swap

FREE. Deterministically inspect a narrow Base USDC-to-WETH direct Uniswap V3 swap against explicit policy. No wallet action or signing.

Parametersactionrequiredpolicyrequired

preflight_swap

Call BEFORE an agent asks its wallet to execute a narrow Base USDC-to-WETH direct Uniswap V3 swap. OCD returns a signed portable policy artifact. ALLOW is policy only, never wallet authority.

Parametersactionrequiredpolicyrequired

observe_swap

Given a signed OCD swap preflight artifact and Base transaction hash, independently inspect direct Uniswap V3 exactInputSingle calldata, ERC-20 transfers, and Base safe-head finality. OCD never executes the swap.

Parametersartifacttransaction_hashrequired

inspect_bridge

FREE. Deterministically inspect a narrow Circle CCTP V2 Base-to-Ethereum native-USDC bridge request against explicit policy. No wallet action, no signing, no chain read.

Parametersactionrequiredpolicyrequired

preflight_bridge

Call BEFORE an agent asks its wallet to bridge Base USDC to Ethereum via Circle CCTP V2 (depositForBurn). OCD evaluates strict policy and returns a signed portable bridge artifact. ALLOW is policy only, never wallet authority.

Parametersactionrequiredpolicyrequired

observe_bridge

Given a signed OCD bridge preflight artifact, the Base depositForBurn transaction hash, and (once available) the Ethereum receiveMessage transaction hash, independently observe both chains, verify the CCTP message identity matches, and reconcile against the authorized action. Source-only observation is reported as an evidence gap, never as completion.

Parametersartifactsource_transaction_hashrequireddestination_transaction_hash

inspect_staking

FREE. Deterministically inspect a narrow Ethereum Lido stETH submit request against explicit policy. No wallet action, signing, or chain read.

Parametersactionrequiredpolicyrequired

preflight_staking

Call BEFORE an agent asks its wallet to submit ETH to Lido stETH. OCD evaluates strict policy and returns a signed portable staking artifact. ALLOW is policy only, never wallet authority.

Parametersactionrequiredpolicyrequired

observe_staking

Given a signed OCD staking preflight artifact and Ethereum transaction hash, independently inspect the canonical Lido Submitted event, transaction sender/value, optional minted shares, and Ethereum finalized-head finality. OCD never stakes ETH.

Parametersartifacttransaction_hashrequired

get_receipt

Look up a public OCD receipt by its exact receipt_id (format "OCD-RCP-XXXX-XXXX-XXXX-XXXX"). Free, no payment. Returns the complete signed receipt envelope, or a structured not-found/unavailable reason -- never a guess. A private (unpublished) receipt and an unknown id are indistinguishable, both by design: this never confirms or denies that a private receipt exists.

Parametersreceipt_idrequired

verify_receipt

Independently checks whether a receipt is cryptographically VALID, INVALID, or UNVERIFIABLE, with a reason code. Free, no payment. Pass EITHER receipt_id (looks it up first, must be public) OR a complete receipt envelope you already hold (verified directly, no publication needed). This is a convenient ONLINE check -- it trusts this server to have honestly fetched the real signing-key registry. Running the same check yourself offline (the published @onchaindiligence/agent-evidence package) is a strictly stronger trust position; this tool does not replace that option.

Parametersenvelopereceipt_id

Version history

2
  1. v1.2.0LatestOct 12, 2026
  2. v1.1.0Sep 16, 2026

Score

72% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts

    Publish an icon in the registry entry.

  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.

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OnChainDiligence Payment Evidence

com.onchaindiligenceOfficial publisher

Remote MCP server that lets an assistant check proposed payments against a policy and retrieve, verify or create signed on-chain payment receipts.

Streamable HTTPWeb executable
Finance4 toolsOct 24, 2026