---
title: "KYE Protocol™ — KYE™ App Store | Productised apps for agentic payments, open finance, MCP, evidence and certification"
description: "The KYE™ App Store. 21 productised authority surfaces on KYE Protocol™ — payments, open finance, sandbox, sector apps, MCP, evidence, certification, legal"
url: https://kyeprotocol.com/apps/
lang: en
source: "KYE Protocol"
---

> The KYE™ App Store. 21 productised authority surfaces on KYE Protocol™ — payments, open finance, sandbox, sector apps, MCP, evidence, certification, legal

KYE™ App Store

# Reference authority surfaces on KYE™.

The KYE™ App Store indexes _reference apps_ on KYE Protocol™ — not connectors, not plugins, and **not yet commercial products**. Each card lists the open contracts shipping with v1.0: schemas, sample payloads, manifest, webhook verifier, SDK adapters. Build on top, fork, or take to production yourself.

Connector Hub™ integrates KYE™. App Store productises KYE™. Plugin Marketplace™ extends KYE™.

Illustrative — the authority + evidence record KYE Protocol™ produces for a single governed action (sample data).

Mobile demo · the user-facing showcase

## KYE™ Authority Wallet™ — control AI agents from your phone.

An Android / iOS demo (Expo / React Native) that turns the protocol into an experience. Create AI agents, grant scoped authority, approve / deny / revoke, inspect Decision Maps™, view Evidence Packs™. Synthetic data; simulated agent and payment flows.

- **Flagship scenario:** _Let an AI shopping agent buy on my behalf, but only up to £50, only from approved merchants, and require my approval above £25._ The phone receives a request for £34.99 and asks **approve / deny / modify scope / revoke**.
- **Six screens:** Home, Agent (with revoke + cascade demo), Approval, Decision Map™, Evidence Pack™, Developer mode (request / decision / evidence / webhook JSON + TS SDK snippet).
- **Five demo scenarios shipped:** agent-backed purchasing, travel booking, open-banking payment-prep, healthcare appointment booking, legal contract approval, security key rotation.
- **Demo vs Pro:** the demo is proprietary and runs on synthetic data. The production version — KYE™ Authority Wallet Pro™ — ships real Gateway integration, enterprise approvals, push notifications, evidence archive (commercial). Banks and payment platforms get KYE™ Mobile Approval Gateway™.

[Wallet roadmap →](https://kyeprotocol.com/roadmap/#wallet) APK build pending Play Console →

Demo app uses synthetic data and simulated agent / payment flows. It does not process real payments or replace bank, wallet, legal, healthcare, or identity systems.

Payments & commerce · 4 apps

## The agentic-payments stack.

Every claim here is backed by the open KYE Protocol™ contracts and verifiable end-to-end from the publisher's JWKS — you check it yourself, you don't take our word for it.

### KYE™ Payment Authority Gateway™

Runtime authority gateway for agent-backed payments and delegated purchasing. Checks actor · principal · payment instrument · merchant · basket · amount · currency · jurisdiction · authority grant · approval threshold · state · risk · policy. **Verify delegated payment authority before an agent, workflow, wallet, IPG, MPG, checkout, or payment rail acts. Before the payment is authorised, KYE™ proves the agent was authorised.** **Open:** payment authority schemas · sample decision payloads · webhook verifier · connector manifest · SDK examples. [Reference architecture →](https://kyeprotocol.com/agent-purchasing/) [Try the simulator](https://kyeprotocol.com/agent-purchasing/#simulator)

### KYE™ Checkout Guard™

Detect agent-backed checkout flows; verify whether the agent is allowed to buy _this_ basket from _this_ merchant using _this_ instrument under the customer's limits. Outside scope → deny / pause / require approval before payment execution. **Open:** checkout authority schema · basket-hash schema · sample plugin · webhook verifier · SDK examples. [Checkout reference →](https://kyeprotocol.com/open-banking/) [Connector](https://kyeprotocol.com/connectors/#flagship)

### KYE™ Agent Purchasing Reference App™

Reference app showing how a customer delegates limited card-purchasing authority to an AI agent. KYE™ checks the agent, customer, card token, merchant, basket, spend limits, state, and approval threshold before the purchase proceeds. Every purchase produces a Decision Map™ and evidence pack. **Open:** reference architecture · sample schemas · sample decision payloads · sample evidence JSON · demo connector manifest. [Full reference →](https://kyeprotocol.com/agent-purchasing/) [Live simulator](https://kyeprotocol.com/agent-purchasing/#simulator)

[KYE™ IPG / MPG Connector™ Add KYE™ pre-authorisation checks to internet and mobile payment gateways. Verify agent authority, payment-instrument state, merchant category, basket hash, risk state, and approval threshold before the gateway processes the payment. **Open:** IPG/MPG connector manifest · sample pre-authorisation request · sample webhook event · signature verifier · test harness. Connector details →](https://kyeprotocol.com/connectors/#flagship)

Open finance · 3 apps

## Authority Finality™ for open finance APIs.

Every claim here is backed by the open KYE Protocol™ contracts and verifiable end-to-end from the publisher's JWKS — you check it yourself, you don't take our word for it.

[KYE™ Open Finance Authority Gateway™ Add Authority Finality™ evidence to open banking and open finance APIs. KYE™ proves which app, agent, TPP, API client, or corporate workflow acted for which customer, under what consent, scope, state, and evidence. **Open:** open-finance authority schema · consent-to-authority mapping · sample OpenAPI adapter · sample decision payloads · test fixtures. Open-banking page →](https://kyeprotocol.com/open-banking/)

### KYE™ for open-banking platforms

Wraps an open-banking platform's account-access and payment-initiation calls with KYE™ authority decisions. Governs account access, payment initiation, API clients, TPPs, finance agents, and delegated workflows through one authority model. **Open:** open-banking connector manifest · connector/KYE™ mapping examples · sandbox adapter · sample conformance tests.

### KYE™ Bank Developer Portal Authority Connector™

Add delegated authority and API-client governance to bank developer portals. KYE™ proves which app, agent, TPP, corporate workflow, or API client acted for which customer, under what authority, with what evidence. **Open:** developer-portal connector schema · API-client authority schema · sample API-key binding · sample decision events.

Sandbox & conformance · 2 apps

## Test agentic finance with audit-ready evidence.

Every claim here is backed by the open KYE Protocol™ contracts and verifiable end-to-end from the publisher's JWKS — you check it yourself, you don't take our word for it.

### KYE™ UAE Open Finance Sandbox Connector™

Add KYE™ authority decisions, evidence packs, Decision Maps™, and conformance evidence to UAE-style open-finance sandbox testing. Test customer consent, API-client authority, AI finance agents, transaction initiation, account access, and evidence flows. KYE™ turns sandbox actions into replayable authority decisions and signed evidence packs. **Open:** sandbox authority schemas · synthetic test fixtures · sample evidence payloads · sample API adapter.

### KYE™ Regulatory Sandbox Evidence Harness™

Test agentic finance, delegated authority, and AI-governance workflows in sandbox environments with Decision Maps™, signed evidence packs, self-audit reports, and conformance outputs. **Open:** sandbox evidence schemas · sample test fixtures · self-attestation schema · conformance output format.

Sector apps · 2 apps

## Pensions: dashboards, advisers, retirement agents.

Every claim here is backed by the open KYE Protocol™ contracts and verifiable end-to-end from the publisher's JWKS — you check it yourself, you don't take our word for it.

### KYE™ Pension Authority Connector™

Govern pension dashboard, adviser, scheme, provider, ISP, and retirement-agent access with state-aware authority decisions and evidence packs. KYE™ proves who viewed or acted on pension data, on whose authority, for what purpose, within what scope. **Open:** pension authority schema · member consent model · sample find / view authority payloads · connector manifest.

### KYE™ Pension Sandbox Harness™

Test pension dashboard and provider authority flows with synthetic members, schemes, API endpoints, adviser roles, retirement agents, Decision Maps™, and evidence packs. **Open:** synthetic pension authority examples · sample evidence schema · sandbox connector manifest · test fixtures.

Agentic / MCP · 1 app

## Make KYE™ available to MCP-compatible agents.

Every claim here is backed by the open KYE Protocol™ contracts and verifiable end-to-end from the publisher's JWKS — you check it yourself, you don't take our word for it.

### KYE™ MCP Server & Tool Governance Gateway

Expose KYE™ authority checks, schemas, dictionaries, capability manifests, Decision Maps™, and evidence packs to MCP-compatible agents, IDEs, and developer tools. Agents can _inspect_ authority; production systems still _enforce_ through the KYE™ Runtime Gateway.

**Open:** MCP server skeleton · read-only MCP tools · schema resources · dictionary resources · sample decision tools · local dev MCP server.

[Full MCP server reference →](https://kyeprotocol.com/mcp/)

Audit & certification · 2 apps

## Evidence, not screenshots.

Every claim here is backed by the open KYE Protocol™ contracts and verifiable end-to-end from the publisher's JWKS — you check it yourself, you don't take our word for it.

[KYE™ Evidence Pack Viewer™ Replay decisions, verify signatures, inspect authority grants, check entity state, review payload hashes, trace audit events, and map evidence to controls. For auditors, regulators, banks, enterprises, and customers. **Open:** evidence-pack schema · sample evidence packs · signature-verification library · basic viewer. Auditor view →](https://kyeprotocol.com/auditors/) [KYE™ Certification & Conformance Portal™ Run KYE™ self-tests, publish self-attestations, submit implementations for review, and earn KYE™ Self-Tested™ → KYE™ Self-Attested™ → KYE™ Conformant™ → KYE™ Certified™ badges. **Open:** conformance fixtures · self-attestation schema · certification record schema · basic CLI reporter. Certification program →](https://kyeprotocol.com/certification/)

Legal · 7 apps

## Authority Finality™ for legally relevant actions.

### Non-goal:

KYE™ does not replace lawyers, courts, e-signature platforms, or legal agreements. It provides the technical authority and evidence layer that legal validity, enforceability, dispute resolution, and audit defensibility depend on.

### KYE™ Contract Authority Gateway™

Verify whether a person, agent, director, employee, workflow, or system is authorised before a contract is generated, negotiated, approved, signed, amended, or terminated. Checks actor · principal · delegation chain · signing authority · approval threshold · document state · evidence requirements. **Open:** contract authority schema · sample contract-approval payloads · sample audit events · connector manifest · webhook verifier.

### KYE™ Signature Authority Connector™

Add KYE™ authority checks around e-signature workflows. Prove whether the signer, approver, agent, or workflow had authority to sign or approve the document at the time of signature. Connects to DocuSign-style, Adobe Sign-style, and contract-lifecycle-management systems. **Open:** signature authority schema · sample envelope mapping · sample webhook events · connector manifest.

### KYE™ Power of Attorney & Delegation App™

Model legal or operational delegation where one entity acts on behalf of another — power of attorney, director delegation, employee mandate, agent mandate, corporate signatory authority, family-office authority, trustee authority, guardian / representative authority, adviser authority. **Open:** delegation authority schema · representative authority schema · sample power-of-attorney payload · reason codes.

### KYE™ Legal Evidence Pack Viewer™

Replay authority decisions, verify signatures, inspect delegation chains, check state snapshots, review payload hashes, export legal evidence bundles. For contract disputes, payment disputes, agent-purchase disputes, employment disputes, supplier disputes, board-approval evidence, regulatory evidence, litigation-bundle preparation. **Open:** legal evidence pack schema · basic evidence verifier · sample evidence packs · signature-verification library.

### KYE™ Matter Authority Workspace™

Govern who can access, update, approve, or export information related to legal matters — law-firm matter access, in-house legal matter workspace, external counsel access, privileged-document access, settlement approval, litigation-task delegation, expert-witness document access. **Open:** matter authority schema · legal-matter metadata schema · privilege-classification dictionary · sample audit events.

### KYE™ Legal Hold & Preservation App™

Bind legal holds to entities, systems, data classes, custodians, workflows, and audit evidence. Prove who issued the hold, who acknowledged it, what systems were affected, and when it changed — legal hold notice, document preservation, employee acknowledgement, e-discovery hold, audit preservation, regulatory investigation, data-deletion stop. **Open:** legal hold schema · custodian schema · preservation event schema · sample webhook events.

### KYE™ Settlement Authority App™

Verify whether a person, agent, insurer, claims handler, solicitor, or corporate officer has authority to offer, accept, or approve settlement — insurance settlement, employment settlement, commercial-dispute settlement, customer redress, regulatory remediation, ombudsman settlement. **Open:** settlement authority schema · approval-threshold schema · sample decision payloads.

App manifest

## Every app ships a `kye.app_manifest.v1`.

App manifests declare what the app does, which profiles it supports, the capabilities it exposes, and the deployment modes it supports.

```
{
  "schema_version": "kye.app_manifest.v1",
  "app_id":         "kye:app:payment-authority-gateway",
  "name":           "KYE™ Payment Authority Gateway",
  "display_name":   "KYE™ Payment Authority Gateway™",
  "category":       "payments",
  "app_type":       "runtime_gateway",
  "version":        "1.0.0",
  "publisher": {
    "publisher_entity_id":  "kye:org:kye_protocol",
    "maintainer_entity_ids": ["kye:user:maintainer_001"]
  },
  "description": "Runtime authority gateway for agent-backed payments and delegated purchasing.",
  "supported_profiles": [
    "kye.core.v1", "kye.payment_authority.v1",
    "kye.agent_purchasing.v1", "kye.webhooks.v1", "kye.evidence.v1"
  ],
  "capabilities": [
    "authority_decision", "agent_purchase_check",
    "payment_instrument_binding", "decision_map_generation",
    "evidence_pack_generation", "signed_webhooks"
  ],
  "deployment_modes": ["hosted", "byoc", "on_prem"],
  "status": "active"
}
```

Adjacent reading

## Where to go next.

Every claim here is backed by the open KYE Protocol™ contracts and verifiable end-to-end from the publisher's JWKS — you check it yourself, you don't take our word for it.

[Connector Hub™ →](https://kyeprotocol.com/connectors/) [Plugin Marketplace™](https://kyeprotocol.com/plugins/) [Build with KYE™](https://kyeprotocol.com/build/) [Partner program](https://kyeprotocol.com/partners/)

## Ready to see your AI agents flagged?

Start in shadow mode. We’ll deliver your first Evidence Pack™ in 4–8 weeks.

[Apply for pilot →](https://kyeprotocol.com/pilot-apply/) [Try the sandbox →](https://kyeprotocol.com/sandbox/demos/)

Canonical KYE™ surfaces referenced on this page: [Authority Graph™](https://kyeprotocol.com/authority-lifecycle/) · [Evidence Pack™](https://kyeprotocol.com/evidence-pack/) · [KYE Protocol™](https://kyeprotocol.com/).