The proof and repair layer for Apple coding agents.
Axint checks the Swift your agent wrote, runs the real Xcode build and tests,
reconciles findings with Apple tooling, and returns signed proof with the exact repairs to make next.
No project rewrite. No source upload.
Prove a project · Try Cloud Preview · Connect an agent · Docs · Examples · Contribute
Local by default. Open source. Ordinary Swift.
## A plausible patch is not proof. Apple software is a graph of contracts. SwiftUI state, App Intents, Siri and Shortcuts metadata, widgets, entitlements, privacy declarations, concurrency, build settings, tests, and runtime behavior all have to agree. Code that looks right can still fail to compile, miss an interaction, or violate a platform contract. Axint puts static analysis and Apple tooling into one repair loop. Static checks identify leads; Xcode build and test output can confirm, contextualize, or suppress them. The result stays compact enough for the next agent turn while full logs and artifacts remain on disk. | Evidence class | What it means | | --- | --- | | **Confirmed** | Deterministic analysis or matching compiler, build, or test evidence supports the finding. | | **Probable** | Strong static evidence identifies a likely problem, but decisive Apple-tooling evidence is incomplete. | | **Advisory** | A heuristic identifies a quality, accessibility, privacy, interaction, design, or runtime concern for review. | | **Suppressed** | Stronger evidence or a project-local review contradicts the finding; it remains in the receipt without blocking the result. | ## Prove an existing project ```bash npx -y -p @axint/compiler axint prove --dir /path/to/MyApp ``` Axint discovers the Xcode project and scheme, checks existing Swift, runs the available build and tests, reconciles the findings, and writes proof under `.axint/proof`. The default local run requires no account or configuration. It does not change Swift, upload source, install project instructions, install memory or MCP configuration, apply fixes, or rewrite the project. When a failure needs another turn, Axint returns a [**Fix Packet**](docs/FIX_PACKET.md): a compact repair artifact with the finding, likely files, exact next action, and rerun command. It also writes a **source-free receipt**: a signed proof file containing evidence, results, hashes, and repair information without project source. ```bash axint prove --dir /path/to/MyApp --fix axint receipt verify /path/to/MyApp/.axint/proof/latest.proof.json ``` `--fix` opts into supported deterministic rewrites and reruns the proof loop. Receipt verification checks payload integrity and the embedded Ed25519 signer. A locally signed receipt does not establish an externally trusted identity unless CI or the receiving team pins the signer fingerprint or a managed signing key. ## One proof contract Generate, Check, Run, Team, and Cloud are different entry points into the same contract: verdict, evidence, findings, next actions, and artifact paths. | Mode | Role in the proof loop | | --- | --- | | **Check** | Validate generated or existing Swift with evidence-aware diagnostics and appropriate abstention. | | **Run** | Orchestrate resumable build, test, runtime, and `.xcresult` evidence on a local or your own Mac runner. | | **Generate** | Compile smaller contracts into inspectable App Intents, SwiftUI views, widgets, Live Activities, app shells, metadata, and tests. | | **Team** | Preserve project context, sessions, file claims, repair packets, and handoffs across agents. | | **Cloud** | Run hosted checks and preserve shared proof history when local Apple tooling is unavailable. | ## Generate when it helps Generation is optional for existing projects. When a feature is easier to describe as a smaller contract, Axint can emit ordinary Swift and the companion metadata required by the selected Apple surface. ```typescript import { defineIntent, param } from "@axint/compiler"; export default defineIntent({ name: "CreateCalendarEvent", title: "Create Calendar Event", description: "Creates a calendar event for the user.", domain: "productivity", params: { title: param.string("Event title"), date: param.date("Event date"), duration: param.duration("Event duration"), location: param.string("Location", { required: false }), }, perform: async ({ title, date }) => ({ success: true, message: `Created ${title} on ${date}`, }), }); ``` ```bash axint compile create-calendar-event.ts --out ios/Intents/ ``` TypeScript, Python, JSON IR, and the experimental `.axint` authoring surface lower into inspectable Apple-native output. The TypeScript pipeline also supports views, widgets, apps, Live Activities, App Enums, UnionValue schemas, App Shortcuts, and extension scaffolds; see the [coverage map](docs/COVERAGE.md) for the implementation and proof boundary of each surface. ## Connect your agent Axint ships an MCP server for standards-compatible hosts: ```json { "mcpServers": { "axint": { "command": "npx", "args": ["-y", "-p", "@axint/compiler", "axint-mcp"] } } } ``` Start a fresh tool session, then call `axint.status` and `axint.activate` to verify that the server and compiler are connected. The hosted endpoint at `https://mcp.axint.ai/mcp` supports both established MCP clients and the current stateless protocol generation. Compatibility is continuously checked with official SDK clients; see the [protocol compatibility contract](docs/MCP_2026_COMPATIBILITY.md).