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deterministic-agent-control-protocol

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Governance gateway for AI agents — bounded, auditable, session-aware control with MCP proxy, shell proxy & HTTP API. Works with Cursor, Claude Code, Codex, and any MCP-compatible agent.

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# Self-Evolving Deterministic Agent Control Protocol

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**A governance gateway for AI agents — making every action bounded, auditable, reversible, and explainable.**

Works transparently with **Cursor**, **Claude Code**, **Codex**, and any MCP-compatible agent. Also supports shell command governance and a language-agnostic HTTP API.

### 🛡️ Governance in Action

<table>
 <tr>
 <td align="center" colspan="2">
 <img src="assets/mcp-config.gif" alt="Setting up governance rule in Cursor" width="80%" />
 
 1. Set Up Governance Rule
 
 Enable the governance rule in Cursor's settings to protect your workspace.
 </td>
 </tr>
 <tr>
 <td align="center" width="50%">
 <img src="assets/block-access-env.gif" alt="Blocking .env file access" width="90%" />
 
 2. Block Secrets Exfiltration
 
 Agent attempts to read <code>.env</code> and write secrets — blocked instantly.
 </td>
 <td align="center" width="50%">
 <img src="assets/partial-block.gif" alt="Blocking credential search" width="90%" />
 
 3. Block Credential Scanning
 
 Agent tries to search for credentials and secrets files — denied by policy.
 </td>
 </tr>
</table>

https://github.com/user-attachments/assets/ec7a9524-1527-4e51-b837-7e05a24b189d

---

## Table of Contents

- [How It Works](#how-it-works)
- [Core Principles](#core-principles)
- [Quick Start](#quick-start)
- [Agent Integrations](#agent-integrations)
- [Built-in Policies](#built-in-policies)
- [Integration Modes](#integration-modes)
- [Policy Self-Evolution](#policy-self-evolution)
- [Architecture](#architecture)
- [Policy DSL Reference](#policy-dsl-reference)
- [Built-in Tool Adapters](#built-in-tool-adapters)
- [Custom Tool Adapters](#custom-tool-adapters)
- [Development](#development)
- [Contributing](#contributing)
- [License](#license)

---

## How It Works

Agents never execute tools directly. Every action flows through the control plane for evaluation, enforcement, and audit:

```mermaid
flowchart LR
    A["Agent"] -->|"action request"| CP["Control Protocol"]
    CP -->|"evaluate against policy"| D{"Decision"}
    D -->|"allow"| E["Agent Executes Action"]
    D -->|"deny"| F["Blocked + Reason Logged"]
    D -->|"gate"| G["Human Approval Required"]
    E -->|"record result"| L["Evidence Ledger"]
    G -->|"approved"| E
```

The protocol **does not execute** actions itself. It evaluates them against a policy, enforces session-level budgets, requires human approval for risky operations, and records everything in a tamper-evident audit ledger.

---

## Core Principles

| Principle               | Description                                                               |
| ----------------------- | ------------------------------------------------------------------------- |
| **Bounded**       | Agents can only perform allowed actions within allowed scopes             |
| **Session-Aware** | Budget, rate limits, and escalation rules across the full interaction     |
| **Auditable**     | Every action logged in a tamper-evident ledger with SHA-256 hash chaining |
| **Reversible**    | Compensation plans for undoing executed actions                           |
| **Explainable**   | Full reporting — what was allowed, denied, gated, and why                |

---

## Quick Start

### Install

```bash
npm i @det-acp/core
```

### Set Up Governance (One Command)

```bash
npx det-acp init cursor        # Cursor
npx det-acp init codex         # Codex CLI
npx det-acp init claude-code   # Claude Code
```

This generates all required files (policy, MCP config, governance rules) with sensible defaults. Edit `policy.yaml` to customize — everything else is handled automatically.

```bash
# Use your own policy instead of the default
npx det-acp init cursor --policy ./my-policy.yaml
```

> After running `init`, restart your agent to pick up the MCP server.

### Define a Policy

Create `agent.policy.yaml`:

```yaml
version: "1.0"
name: "my-agent"

capabilities:
  - tool: "file:read"
    scope:
      paths: ["./src/**"]
  - tool: "file:write"
    scope:
      paths: ["./src/**"]
  - tool: "command:run"
    scope:
      binaries: ["npm", "node", "tsc"]

limits:
  max_runtime_ms: 1800000
  max_files_changed: 50

gates:
  - action: "file:delete"
    approval: "human"
    risk_level: "high"

evidence:
  require: ["checksums", "diffs"]
  format: "jsonl"

forbidden:
  - pattern: "**/.env"
  - pattern: "rm -rf"

session:
  max_actions: 100
  max_denials: 10
  rate_limit:
    max_per_minute: 30
  escalation:
    - after_actions: 50
      require: human_checkin
    - after_minutes: 15
      require: human_checkin
```

### Use as a Library

```typescript
import { AgentGateway } from '@det-acp/core';

const gateway = await AgentGateway.create({
  ledgerDir: './ledgers',
  onStateChange: (sessionId, from, to) => console.log(`${from} -> ${to}`),
});

// Create a session
const session = await gateway.createSession('./agent.policy.yaml', {
  agent: 'my-coding-agent',
});

// Evaluate an action (does NOT execute it)
const verdict = await gateway.evaluate(session.id, {
  tool: 'file:read',
  input: { path: './src/index.ts' },
});

if (verdict.decision === 'allow') {
  // Execute the action yourself
  const content = fs.readFileSync('./src/index.ts', 'utf-8');

// Record the result
  await gateway.recordResult(session.id, verdict.actionId, {
    success: true,
    output: content,
    durationMs: 5,
  });
}

// Terminate and get report
const report = await gateway.terminateSession(session.id, 'task complete');
console.log(`Allowed: ${report.allowed}, Denied: ${report.denied}`);
```

---

## Agent Integrations

Ready-to-use guides for popular AI agents. Each integration includes policy, config templates, governance rules, test sandbox, and step-by-step instructions.

| Agent                 | Integration Mode                      | Governance Level | Guide                                               |
| --------------------- | ------------------------------------- | ---------------- | --------------------------------------------------- |
| **Cursor**      | MCP Proxy + Cursor Rules              | Soft             | [integrations/cursor/](integrations/cursor/)           |
| **Codex CLI**   | MCP Proxy + AGENTS.md + OS Sandbox    | Soft + Sandbox   | [integrations/codex/](integrations/codex/)             |
| **Claude Code** | MCP Proxy + CLAUDE.md + settings.json | Soft + Semi-Hard | [integrations/claude-code/](integrations/claude-code/) |
| **OpenClaw**    | HTTP API + Skill + Docker Sandbox     | Hard             | [integrations/openclaw/](integrations/openclaw/)       |

<details>
<summary>Governance Levels Explained</summary>

- **Soft** — The LLM is instructed (via rules/instructions files) to prefer governed tools. Effective in practice, but a creative prompt could theoretically bypass it.
- **Semi-Hard** — Soft instructions combined with the agent's built-in permission system that can deny direct tool access (e.g., Claude Code's `settings.json`).
- **Hard** — The agent physically cannot access tools outside the governance layer. Achieved via Docker sandboxing, tool allow/deny lists, or custom agent harnesses.

</details>

For any MCP-compatible agent not listed above, see [MCP Proxy (General)](#mcp-proxy-general).

---

## Built-in Policies

Production-ready policies in `examples/` — usable out of the box:

| Policy                 | File                                                                               | Use Case                                                                   | Tools Used |
| ---------------------- | ---------------------------------------------------------------------------------- | -------------------------------------------------------------------------- | ---------- |
| Coding Agent           | [`coding-agent.policy.yaml`](examples/coding-agent.policy.yaml)                     | AI coding agents operating on a project                                    | 13 tools   |
| DevOps Deploy          | [`devops-deploy.policy.yaml`](examples/devops-deploy.policy.yaml)                   | Deployment agents that build, test, and deploy code                        | 16 tools   |
| Video Upscaler         | [`video-upscaler.policy.yaml`](examples/video-upscaler.policy.yaml)                 | Media processing agents running upscaling pipelines                        | 11 tools   |
| Data Analyst           | [`data-analyst.policy.yaml`](examples/data-analyst.policy.yaml)                     | Data analysis agents processing datasets and generating reports            | 12 tools   |
| Security Audit         | [`security-audit.policy.yaml`](examples/security-audit.policy.yaml)                 | Security scanning agents auditing code and dependencies                    | 11 tools   |
| Infrastructure Manager | [`infrastructure-manager.policy.yaml`](examples/infrastructure-manager.policy.yaml) | Infrastructure management agents handling IaC, deployments, and monitoring | 16 tools   |

> Validate any policy with: `npx det-acp validate ./policy.yaml`

---

## Integration Modes

| Mode                  | How It Works                                    | Best For                            |
| --------------------- | ----------------------------------------------- | ----------------------------------- |
| **MCP Proxy**   | Transparent proxy between agent and MCP servers | Cursor, Claude Code, any MCP client |
| **Shell Proxy** | Command wrapper that validates before executing | CLI agents, shell-based workflows   |
| **HTTP API**    | REST endpoints for session management           | Any language, custom integrations   |
| **Library SDK** | TypeScript API for in-process governance        | Custom TypeScript agents            |

### MCP Proxy (General)

Works with any MCP-compatible client.

**Simplified mode** — point at a policy file, auto-configures filesystem backend:

```bash
npx det-acp proxy --policy ./policy.yaml
npx det-acp proxy --policy ./policy.yaml --dir /path/to/project
```

<details>
<summary>Full config mode</summary>

For advanced setups with multiple backends, SSE transport, etc.:

```bash
cat > mcp-proxy.config.yaml << 'EOF'
policy: ./agent.policy.yaml
ledger_dir: ./.det-acp/ledgers
transport: stdio
backends:
 - name: filesystem
 transport: stdio
 command: npx
 args: ["-y", "@modelcontextprotocol/server-filesystem", "./src"]
EOF

npx det-acp proxy ./mcp-proxy.config.yaml
```

</details>

### Shell Proxy

Execute commands through the policy gateway:

```bash
npx det-acp exec ./agent.policy.yaml echo "hello"    # Allowed
npx det-acp exec ./agent.policy.yaml rm -rf /tmp      # Denied (forbidden)
```

### HTTP Session Server

```bash
npx det-acp serve --port 3100
```

<details>
<summary>HTTP API Examples</summary>

```bash
# Create a session
curl -X POST http://localhost:3100/sessions \
  -H "Content-Type: application/json" \
  -d '{"policy": "version: \"1.0\"\nname: test\ncapabilities:\n  - tool: file:read\n    scope:\n      paths: [\"./src/**\"]"}'

# Evaluate an action
curl -X POST http://localhost:3100/sessions/<session-id>/evaluate \
 -H "Content-Type: application/json" \
 -d '{"action": {"tool": "file:read", "input": {"path": "./src/index.ts"}}}'

# Record result
curl -X POST http://localhost:3100/sessions/<session-id>/record \
 -H "Content-Type: application/json" \
 -d '{"actionId": "<action-id>", "result": {"success": true, "output": "..."}}'

# Terminate session
curl -X POST http://localhost:3100/sessions/<session-id>/terminate
```

</details>

### CLI Reference

```bash
npx det-acp init <agent> # Set up governance (cursor, codex, claude-code)
npx det-acp init <agent> --policy <file> # Use custom policy
npx det-acp validate <policy-file> # Validate a policy
npx det-acp proxy --policy <policy-file> # Start MCP proxy (simplified)
npx det-acp proxy --policy <policy-file> --evolve # With policy self-evolution
npx det-acp proxy <config-file> # Start MCP proxy (full config)
npx det-acp exec <policy-file> <command> # Execute via shell proxy
npx det-acp report <ledger-file> # View audit report
npx det-acp serve [--port <port>] # Start HTTP session server
```

---

## Policy Self-Evolution

When an action is **denied** by the policy, the self-evolution feature can suggest a minimal policy change that would allow it, prompt you for a decision, and optionally update the policy (in memory and/or on disk). This keeps governance strict by default while letting you relax policy incrementally when you approve.

### What it does

- **Analyses denials** — Pattern-matches denial reasons (missing capability, path/binary/domain outside scope, forbidden pattern) and produces a single, minimal policy edit.
- **Prompts you** — Presents the suggestion (e.g. “Add `file:read` capability for path `./config/**`?”) via the agent’s own chat UI.
- **Three choices:**
  - **Add to policy** — Apply the change to the session’s policy and **persist** it to the policy YAML file.
  - **Allow once** — Apply the change **in memory only** for the current session (no disk write).
  - **Deny** — Keep the block; no change.
- **Retry** — After approval, the agent retries the original tool call against the updated policy.

Budget and session-limit denials (e.g. “Budget exceeded”, “Rate limit exceeded”) are **not** suggestible; only permission/scope/forbidden denials can trigger evolution.

### How it works (MCP-native)

When running as an MCP proxy (the default for Cursor, Claude Code, and Codex), evolution uses a **two-step asynchronous protocol** built entirely on standard MCP tool calls — no terminal stdin/stdout required:

1. **On deny:** The proxy returns the denial to the agent with a structured suggestion and a unique `suggestion_id`.
2. **On approve:** The agent presents the suggestion to the user in chat, collects their decision, and calls `policy_evolution_approve` with the `suggestion_id` and decision.
3. **On retry:** The proxy applies the policy change. The agent retries the original tool call, which now succeeds.

```mermaid
sequenceDiagram
    participant User
    participant Agent as Agent (Cursor / Claude Code)
    participant Proxy as MCP Proxy
    participant GW as Gateway

Agent->>Proxy: callTool("read_text_file", path)
    Proxy->>GW: evaluate()
    GW-->>Proxy: deny
    Proxy->>Proxy: suggestPolicyChange()
    Proxy-->>Agent: Denied + suggestion + suggestionId

Agent->>User: "read_text_file denied. Add capability for path X?"
    User-->>Agent: "Yes, add to policy"

Agent->>Proxy: callTool("policy_evolution_approve", suggestionId, "add-to-policy")
    Proxy->>Proxy: applyPolicyChange + writePolicyToFile
    Proxy-->>Agent: "Policy updated"

Agent->>Proxy: callTool("read_text_file", path)
    Proxy->>GW: evaluate()
    GW-->>Proxy: allow
    Proxy-->>Agent: file contents
```

This works in **every MCP client** because it uses only the standard MCP tool-call protocol — no readline, no stdin conflicts.

### Enabling self-evolution

**MCP proxy (simplified mode):**

```bash
npx det-acp proxy --policy ./policy.yaml --evolve
```

> The `init` command includes `--evolve` by default in generated MCP configurations.

**Programmatic (library):** pass `policyEvolution` in `GatewayConfig` for non-MCP setups (e.g. CLI scripts, custom agents):

```typescript
import { AgentGateway, createCliEvolutionHandler } from '@det-acp/core';

const gateway = await AgentGateway.create({
  ledgerDir: './ledgers',
  policyEvolution: {
    policyPath: './agent.policy.yaml',
    handler: createCliEvolutionHandler(),
    timeoutMs: 30_000,
  },
});
```

You can plug a custom `EvolutionHandler` (e.g. GUI dialog, webhook) instead of `createCliEvolutionHandler()`.

### Evolution architecture (high level)

```mermaid
flowchart LR
    subgraph Denial["On Deny"]
        A["Action Denied"] --> B["Suggestion Engine"]
        B --> C{"Suggestible?"}
        C -->|No| D["Keep Deny"]
        C -->|Yes| E["PolicySuggestion + ID"]
    end
    E --> F["Agent presents to user"]
    F --> G{"User Decision"}
    G -->|Add to policy| H["policy_evolution_approve → Apply + Write YAML"]
    G -->|Allow once| I["policy_evolution_approve → Apply in-memory"]
    G -->|Deny| D
    H --> J["Retry original tool call"]
    I --> J
    J --> K{"Verdict"}
    K -->|allow| L["Proceed"]
    K -->|deny| D
```

The **Suggestion Engine** maps denial reasons to one of: add capability, widen scope (paths/binaries/domains/methods/repos), or remove a forbidden pattern. In MCP proxy mode, the **MCP Evolution Handler** returns the suggestion to the agent as a structured denial with a `suggestion_id`, and the agent calls `policy_evolution_approve` after collecting the user’s decision. In library mode, the **Policy Evolution Manager** uses a pluggable handler (CLI, GUI, webhook) with a configurable timeout and re-evaluates the action inline.

---

## Architecture

### Component Architecture

```mermaid
graph TB
    subgraph External["External Systems"]
        BackendMCP["Backend MCP Servers"]
        Approvers["Human / Webhook Approvers"]
    end

subgraph Integration["Integration Layer"]
        subgraph MCPProxyGroup["MCP Proxy Server"]
            MCPProxy["MCP Proxy"]
            subgraph McpEvo["MCP Evolution (optional)"]
                McpEvoHandler["MCP Evolution Handler"]
                EvoTool["policy_evolution_approve tool"]
            end
        end
        ShellProxy["Shell Proxy"]
        HTTPServer["HTTP Server"]
        LibrarySDK["Library SDK"]
    end

subgraph Core["Core Engine"]
        Gateway["Agent Gateway"]
        SessionMgr["Session Manager"]
        PolicyEval["Policy Evaluator"]
        GateMgr["Gate Manager"]
        ActionReg["Action Registry"]
        subgraph Evolution["Policy Self-Evolution (optional)"]
            EvolutionMgr["Policy Evolution Manager"]
            SuggestionEngine["Suggestion Engine"]
        end
    end

subgraph Infra["Infrastructure"]
 Ledger["Evidence Ledger (JSONL + SHA-256)"]
 Rollback["Rollback Manager"]
 end

subgraph Tools["Tool Adapters"]
        subgraph FileTools["File Operations"]
            FR["file:read"]
            FW["file:write"]
            FD["file:delete"]
            FM["file:move"]
            FC["file:copy"]
        end
        subgraph DirTools["Directory Operations"]
            DL["directory:list"]
            DC["directory:create"]
        end
        subgraph GitTools["Git Operations"]
            GD["git:diff"]
            GA["git:apply"]
            GC["git:commit"]
            GS["git:status"]
        end
        subgraph NetTools["Network & System"]
            CR["command:run"]
            HR["http:request"]
            ND["network:dns"]
            ER["env:read"]
            AE["archive:extract"]
        end
    end

MCPProxy --> Gateway
    ShellProxy --> Gateway
    HTTPServer --> Gateway
    LibrarySDK --> Gateway

Gateway --> SessionMgr
    Gateway --> ActionReg
    Gateway --> GateMgr

SessionMgr --> PolicyEval
    SessionMgr --> GateMgr
    SessionMgr --> Ledger
    SessionMgr -->|on deny| EvolutionMgr
    EvolutionMgr --> SuggestionEngine

MCPProxy -->|on deny| McpEvoHandler
    McpEvoHandler --> SuggestionEngine
    EvoTool -->|apply change| SessionMgr

ActionReg --> FileTools
    ActionReg --> DirTools
    ActionReg --> GitTools
    ActionReg --> NetTools

Rollback --> ActionReg
    Rollback --> Ledger

MCPProxy --> BackendMCP
    GateMgr --> Approvers
```

### Action Evaluation Flow

```mermaid
sequenceDiagram
    participant Agent
    participant Integration
    participant Gateway as Agent Gateway
    participant Session as Session Manager
    participant Policy as Policy Evaluator
    participant Gate as Gate Manager
    participant Ledger as Evidence Ledger

Agent ->> Integration: Action request (tool, input)
    Integration ->> Gateway: evaluate(sessionId, action)
    Gateway ->> Session: evaluate(sessionId, action)

Session ->> Policy: evaluateSessionAction(action)

Note right of Policy: 1. Session state check 2. Rate limits & escalation 3. Forbidden patterns 4. Capability & scope match 5. Budget limits 6. Gate lookup

Policy -->> Session: allow / deny / gate

Session ->> Ledger: append(action:evaluate)

alt Gate required
        Session ->> Gate: requestApproval(action, gate)
        alt Approved
            Gate -->> Session: approved
        else Pending
            Gate -->> Session: pending
            Note over Agent, Gate: Session paused until resolved
        end
    end

Session -->> Gateway: EvaluateResponse
    Gateway -->> Integration: decision + reasons
    Integration -->> Agent: allow / deny / gate

alt Allowed
        Note over Agent: Executes action externally
        Agent ->> Integration: recordResult(actionId, result)
        Integration ->> Gateway: recordResult(sessionId, actionId, result)
        Gateway ->> Session: recordResult(result)
        Session ->> Session: Update budget tracking
        Session ->> Ledger: append(action:result)
    end

opt Session complete
        Agent ->> Integration: terminateSession()
        Integration ->> Gateway: terminate(sessionId)
        Gateway ->> Session: terminate(sessionId)
        Session ->> Ledger: append(session:terminate)
        Session -->> Agent: Session Report
    end
```

### Session Lifecycle

```mermaid
stateDiagram-v2
    [*] --> Created: createSession()
    Created --> Evaluating: evaluate(action)
    Evaluating --> Allowed: policy allows
    Evaluating --> Denied: policy denies
    Evaluating --> Gated: gate required
    Gated --> Allowed: approved
    Gated --> Denied: rejected
    Allowed --> Recording: recordResult()
    Recording --> Evaluating: next action
    Denied --> Evaluating: next action
    Recording --> Terminated: terminateSession()
    Evaluating --> Terminated: terminateSession()
    Terminated --> [*]
```

### Evidence Ledger

Every action produces an immutable audit record in JSONL format with SHA-256 hash chaining:

```jsonl
{"seq":1,"ts":"...","hash":"sha256:abc...","prev":"sha256:000...","type":"session:start","data":{...}}
{"seq":2,"ts":"...","hash":"sha256:def...","prev":"sha256:abc...","type":"action:evaluate","data":{...}}
{"seq":3,"ts":"...","hash":"sha256:ghi...","prev":"sha256:def...","type":"action:result","data":{...}}
```

If any entry is tampered with, the hash chain breaks and integrity verification fails.

---

## Policy DSL Reference

| Section          | Purpose                                                    |
| ---------------- | ---------------------------------------------------------- |
| `capabilities` | Allowed tools and their scoped paths, binaries, or domains |
| `limits`       | Runtime, cost, file change, and retry budgets              |
| `gates`        | Actions requiring human or webhook approval                |
| `evidence`     | Artifacts that must be recorded (checksums, diffs)         |
| `forbidden`    | Patterns that are always blocked                           |
| `session`      | Max actions, rate limits, escalation rules                 |
| `remediation`  | Error handling rules and fallback chains                   |

See [examples/](examples/) for complete policy files.

---

## Built-in Tool Adapters

### File Operations

| Tool            | Description                           | Rollback                             |
| --------------- | ------------------------------------- | ------------------------------------ |
| `file:read`   | Read files within scoped paths        | N/A (read-only)                      |
| `file:write`  | Write files with backup for rollback  | Restores previous content            |
| `file:delete` | Delete files within scoped paths      | Restores file from backup            |
| `file:move`   | Move/rename files within scoped paths | Moves file back to original location |
| `file:copy`   | Copy files within scoped paths        | Removes copied file                  |

### Directory Operations

| Tool                 | Description                                    | Rollback                    |
| -------------------- | ---------------------------------------------- | --------------------------- |
| `directory:list`   | List files and directories within scoped paths | N/A (read-only)             |
| `directory:create` | Create directories within scoped paths         | Removes created directories |

### Command Execution

| Tool            | Description                                | Rollback             |
| --------------- | ------------------------------------------ | -------------------- |
| `command:run` | Execute allow-listed binaries with timeout | Compensation actions |

### Git Operations

| Tool           | Description                                 | Rollback                            |
| -------------- | ------------------------------------------- | ----------------------------------- |
| `git:diff`   | Get git diff output                         | N/A (read-only)                     |
| `git:apply`  | Apply git patches with stash-based rollback | `git checkout . && git stash pop` |
| `git:commit` | Stage and commit changes                    | `git reset --soft HEAD~1`         |
| `git:status` | Get working tree status                     | N/A (read-only)                     |

### Network & HTTP

| Tool             | Description                           | Rollback             |
| ---------------- | ------------------------------------- | -------------------- |
| `http:request` | HTTP requests to allow-listed domains | Compensation actions |
| `network:dns`  | DNS lookups for allow-listed domains  | N/A (read-only)      |

### Environment & System

| Tool                | Description                                               | Rollback                |
| ------------------- | --------------------------------------------------------- | ----------------------- |
| `env:read`        | Read environment variables with auto-redaction of secrets | N/A (read-only)         |
| `archive:extract` | Extract tar/zip archives within scoped paths              | Removes extracted files |

---

## Custom Tool Adapters

Extend the `ToolAdapter` base class to add your own tools:

```typescript
import { ToolAdapter } from '@det-acp/core';
import { z } from 'zod';

class MyCustomTool extends ToolAdapter {
  readonly name = 'custom:mytool';
  readonly description = 'My custom tool';
  readonly inputSchema = z.object({
    target: z.string().min(1),
    options: z.record(z.string()).optional(),
  });

validate(input, policy) { /* ... */ }
  async dryRun(input, ctx) { /* ... */ }
  async execute(input, ctx) { /* ... */ }
  async rollback(input, ctx) { /* ... */ }
}

// Register it
gateway.getRegistry().register(new MyCustomTool());
```

Every tool adapter follows the execution lifecycle: **validate** -> **dryRun** -> **(gate check)** -> **execute** -> **verify**. Each step is recorded in the evidence ledger.

---

## Development

```bash
npm install          # Install dependencies
npm run lint         # Type check (TypeScript strict)
npm test             # Run tests (Vitest)
npm run build        # Build
```

---

## Contributing

Contributions are welcome! Please follow these guidelines:

1. **Fork** the repository and create a feature branch
2. **Follow** the coding standards (TypeScript strict, ESM, Zod validation)
3. **Write tests** mirroring `src/` structure under `tests/`
4. **Run** `npm test && npm run lint` before submitting
5. **Use** [Conventional Commits](https://www.conventionalcommits.org/) for commit messages
6. **Open a PR** with a clear description of changes

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## License

[MIT](LICENSE)

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## Star History

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deterministic-agent-control-protocol

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