Verifiable Fintech Tools — Browser-Native, Agent-Ready
487 free browser-based fintech tools and 200 hash-anchored, MCP-callable OpenChainGraph workflows built by Post Oak Labs.
Covers A2A payments, ISO 20022, AML/KYC, DORA, EU AI Act, Basel III/IV, carbon compliance, post-quantum cryptography, and more.
Every tool runs entirely client-side — nothing leaves your browser.
Every chain emits a SHA-256 execution_hash for independent verification.
MCP-callable via https://mcp.ainumbers.co/mcp — connect from Claude, ChatGPT, or any MCP client; no authentication required.
Agents call find_chain(query) to get a named, ordered chain recipe with prefill-ready deep-links.
Also: find_tool(query) (catalog search), build_workflow_links (31 named workflows), and 157 server-side compute tools total.
All tools carry readOnlyHint: true — nothing mutates state.
Full docs: mcp.html →
https://mcp.ainumbers.co/mcp. No OAuth prompt; connects immediately.https://mcp.ainumbers.co/mcp, no authentication.npm install @modelcontextprotocol/sdknew StreamableHTTPClientTransport( new URL('https://mcp.ainumbers.co/mcp'))pip install mcpstreamablehttp_client( 'https://mcp.ainumbers.co/mcp')Six picks from 31 categories — all client-side, zero PII. Each ships with a manifest.json for MCP agent discovery.
Model and compare fee structures across A2A corridors — instant vs ACH vs RTP vs FedNow.
Compose and validate pacs.008, pacs.009, camt.054 with full schema checks.
Simulate multi-signal fraud scoring across velocity, device, behavioural, and network risk.
Build a CDD/EDD checklist tailored to customer risk tier, entity type, and jurisdiction.
Score and compare BaaS providers across 10 capability dimensions with adjustable weighting.
Audit ICT risk management, incident response, and third-party resilience against DORA Art. 11–13.
Hash-chained multi-step pipelines where every output carries a verifiable SHA-256 execution_hash. Each chain runs client-side, emits a §4 Policy Mandate artifact, and is callable via find_chain on MCP.
Client-side, zero-egress decision tools where every output carries a verifiable execution hash. Covers AP2 · ACP · Basel 3.1 · DORA · EU AI Act · AMLR · EUDI Wallet · ISO 20022 · T+1 · MiCA · CBAM · PQC and more. Chainable — the §4 artifact of one node is the precondition for the next.
Open OpenChainGraph Hub →ART-15 mandate sandbox → ART-16 AP2 mandate → ART-17 MCP policy validator → ART-18 MCP readiness scorecard. Composite agent_guardrail_mandate with audit trail.
ART-29 readiness diagnostic → scenario routing by grade → ART-09 major-incident classifier. DORA Art. 18/19 reporting. ~22,000 in-scope entities.
ART-77 12-question A–F diagnostic across SSI, allocation/affirmation, messaging, CSDR penalty, fail-rate. Routes to settlement discipline chains.
PD/LGD/EAD → ML credit scorer → RWA → RAROC → covenants → IFRS 9 ECL. EU AI Act Art. 12/14 compliant logging.
ART-68 12-question A–F diagnostic routing to CBAM liability, precursor emissions, EU Taxonomy alignment, EuGB conformance, and NGFS climate scenario chains.
ART-98 5-dimension router → authorization readiness, transitional cliff, whitepaper, MAR-crypto surveillance, TFR travel rule, token scoping. 8 downstream chains.
12 questions across policy, protocol, controls, and MCP runtime — graded A–F with a remediation map pointing each gap at the tool that closes it.
12 questions across tool definitions, transport & auth, security hygiene, and ops — graded A–F with remediation links to specific tools.
All 200 chains, nodes, and diagnostics indexed on chaingraph-hub.html → and machine-indexed in chaingraph.json →
- Execution hash on every artifact. SHA-256 over RFC 8785 canonical JSON of inputs + outputs — any client can independently re-verify. Every chain is a cryptographic audit trail.
- OCG v0.4.1 standard. OpenChainGraph with Compute Binding (§12), Export Profiles (§13), and W3C VC 2.0 credential profiles (§13.11). Spec: SPEC.md →
- MCP-native by design. 157 server-side compute tools registered as
co.ainumbers/tools. Callable from Claude, ChatGPT, any MCP client. No auth. - Zero server, zero PII. All browser tools execute in-tab. No analytics, no cookies, no API calls after load. State wipes on tab close.
- Open source, CC BY 4.0. Fork, adapt, embed with attribution. Inline JS/CSS — no build step, no dependency drift, portable across any static host.
Browse the full chain library — 200 hash-anchored, MCP-callable workflows covering AML, settlement, carbon, agentic payments, and more.
Browse all chains at chaingraph-hub.html →