Orangepro MCP Server

OrangePro

Find the behaviors your tests miss. Generate grounded tests that actually run.

opro builds a knowledge graph from your local checkout, maps every behavior in your code, shows which ones are tested and which aren't, and generates integration-level tests grounded in real symbols — not hallucinated imports. It runs as a CLI and a local stdio MCP server.

Install the target repository's dependencies first, then run OrangePro from that repository:

cd /path/to/your/repo
npm install # or pnpm install / bun install / the repository's package manager

# Optional: enables AI candidate links, candidate flows, and test generation.
export ANTHROPIC_API_KEY="..." # or OPENAI_API_KEY / OLLAMA_BASE_URL

npx -y @orangepro/mcp-server@latest start . --prompt-version v5
open .orangepro/behavior-coverage.html

With no model key, the same command still performs deterministic analysis, renders the report, and dynamically proves eligible behaviors using existing tests. With a key, it also discovers AI candidate flows and drafts grounded tests for the highest-risk gaps. AI output never changes evidence tiers; only the mutation-kill oracle can mint Dynamically Proven.

The command writes:

.orangepro/
├── behavior-coverage.html   ← open this: system map, risks, flows, behaviors
├── graph.json               ← deterministic evidence graph
├── COVERAGE_REPORT.md       ← coverage and gap summary
├── rtm.md                   ← requirements traceability matrix
└── ai/                      ← candidate AI links/flows when a provider is configured

orangepro_generated/         ← contained generated tests; existing source files are untouched

The report opens on a system map of your repo — entry lanes (GraphQL/HTTP/Jobs) flowing into the services they reach, sized by traffic, colored by evidence tier, risk-ringed — identical on every run. Each rerun shows a delta banner: what changed since last run, or "No changes — identical graph, identical ranking." Every one of the ~N behaviors gets a plain-English description; every top risk gets a deterministic context line and a state-aware next step.

Run opro export when you want a machine-readable evidence pack.

---

Install

# No install needed: run the full local workflow in the current repository
npx -y @orangepro/mcp-server@latest start . --prompt-version v5

# Or global install
npm install -g @orangepro/orangepro-mcp
opro start . --prompt-version v5

# Or from source
git clone https://github.com/OrangeproAI/orangepro-mcp.git
cd orangepro-mcp && npm ci && npm run build && npm link

---

Use with your coding agent

OrangePro runs as an MCP server. Any MCP-compatible agent (Cursor, Claude Code, Codex, Copilot, OpenCode) can drive it.

Quick agent setup

If you already have opro on your PATH, print the exact config for your client:

opro agent --client codex
opro agent --client claude-code
opro agent --client cursor
opro agent --client opencode
opro agent --client generic

No global install is required. These commands use the published package:

# Codex
npx -y @orangepro/mcp-server@latest agent --client codex

# Claude Code
npx -y @orangepro/mcp-server@latest agent --client claude-code

# Cursor
npx -y @orangepro/mcp-server@latest agent --client cursor

# OpenCode
npx -y @orangepro/mcp-server@latest agent --client opencode

# Generic MCP clients, including VS Code/Copilot-style MCP settings
npx -y @orangepro/mcp-server@latest agent --client generic

Manual MCP config

Add to your client's MCP config:

{
  "mcpServers": {
    "orangepro-local": {
      "command": "npx",
      "args": ["-y", "@orangepro/mcp-server@latest", "mcp"]
    }
  }
}

The workflow

Tell your agent:

"Use orangepro_start, then orangepro_generate_tests with base_ref=main. Write each test to its suggested_path, run it, and report pass/fail."

The agent writes the test, runs it, calls orangepro_prove, and the behavior turns Dynamically Proven. One prompt, full loop.

MCP tools (18 total)

---

CLI reference

opro                          # analyze + report + agent next actions
opro start --base main        # same, scoped to a branch diff
opro analyze                  # build the evidence graph
opro score                    # graph readiness (0–100)
opro gaps --limit 10          # top 10 untested behaviors
opro generate --base main     # tests for PR diff
opro generate --single        # top gap, whole repo
opro prove                    # mutation-kill oracle (use the prove_run args returned by generate)
opro rtm                      # traceability matrix
opro export                   # metadata-only evidence pack
opro mcp                      # run as MCP server (stdio)
opro doctor                   # what evidence to add next
opro doctor --proof           # explain why dynamic proof could not close
opro coverage                 # ingest runtime coverage

Add --json to any read command for machine output. Run opro help for the full reference.

---

PR workflow

opro generate --base main              # tests for what this branch changed
opro generate --pr 1234                # checks out PR #1234 — mutates your working tree; needs gh + confirmation (prefer --base)
opro generate --changed                # current branch diff vs main

Each generated test includes:

• Grounding — the real files, symbols, and existing tests it cites
• Run hints — where to write it, how to run it
• Scenario bucket + technique — what failure mode it targets and how

If the environment can't run tests yet (dependencies not installed, runner unconfigured), rejected drafts are kept as Manual tests — scenario, Given/When/Then steps, synthetic test data, and expected outcome in plain English, with the exact blocker named. Install dependencies and re-run opro start to turn them into runnable tests. Runnable tests always replace Manual tests for the same behavior; the two are never mixed.

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Test categories

Generation is evidence-gated. A category is produced only when the graph has supporting evidence — never padded with generic filler. These are the local generation buckets. The report additionally shows each risk's applicable testing categories (contract, boundary limits, integration flow, state lifecycle, failure recovery, …), derived deterministically from graph facts — covered categories from real attached tests render normally; the rest render locked, meaning "warranted here, generated on the platform," never "hidden tests exist." Neither taxonomy changes evidence tiers.

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Evidence tiers

Every behavior gets exactly one tier. Nothing is labeled "tested" on faith.

"Dynamically Proven 0" is normal on first run. Static analysis always runs. Dynamic proof requires running tests against targeted mutations. That's the trust model — nothing is Dynamically Proven until a real test kills a real mutant.

When runtime coverage is available, opro start also compares Runtime-covered and Dynamically Proven behaviors over the same deterministic denominator. It never compares source-line coverage with behavior proof or folds off-denominator proofs into that percentage.

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Language support

OrangePro separates static mapping, generated tests, runtime coverage, and dynamic proof. Those are different confidence bars.

Static mapping works across many languages through tree-sitter and repo metadata. Dynamic proof is deliberately narrower: each language needs a runner, mutation locator, sandbox profile, and false-proof regressions before it can mint Dynamically Proven.

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Model setup (BYOK)

Analysis, scoring, and proof need no model key. Generation does.

Auto-detect order: OpenAI → Ollama → Anthropic. Override with --provider and --model.

Run opro setup to configure interactively. Keys stay in your environment — never written to graph, config, or artifacts.

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AI candidate lanes

With a provider key, OrangePro can stage weak AI behavior→symbol links and AI-suggested candidate flows. These are ready for local use as review/generation worklists, but they are not evidence:

• AI links appear as AI-linked suggestions.
• AI flows are stored separately from deterministic flows.
• Neither lane changes Dynamically Proven, Runtime-covered, Statically Linked, denominator counts, or evidence tiers.

Use them when you want the agent to find likely service-boundary flows faster; ignore them when you want a deterministic-only report.

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How it works

OrangePro separates analysis (what your code does) from proof (whether tests actually verify it).

┌─────────────┐     ┌──────────────┐     ┌─────────────┐
│  Your Code  │ ──► │  Knowledge   │ ──► │  Evidence   │
│  (any lang) │     │    Graph     │     │   Tiers     │
└─────────────┘     └──────────────┘     └─────────────┘
                           │
                    ┌──────┴──────┐
                    ▼             ▼
             ┌───────────┐  ┌──────────┐
             │ Gap Report│  │ Generate │
             │ + Risks   │  │  Tests   │
             └───────────┘  └──────────┘

Reruns are cache-accelerated: unchanged files skip re-parsing, BYOK stages don't re-spend tokens on unchanged inputs, and proof certificates persist in a local ledger until the certified file changes. Upgrading the tool auto-invalidates caches.

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Privacy

• No stored source. Reads code in-process. Never uploads to an OrangePro server.
• No existing-source mutation. Never edits existing source or test files. Writes metadata to .orangepro/; keyed auto-drive may write new, reviewable tests under orangepro_generated/.
• Metadata-only exports. File paths, names, hashes, scores — not raw source.
• Your keys stay yours. Read from env at call time, never persisted.
• BYOK is direct. When AI lanes are enabled, grounded code context is sent directly to the model provider you configure; OrangePro's hosted service is not in that path.

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What's on the hosted platform

This repo is the free local tool. The OrangePro platform adds:

• Persistent knowledge graph across PRs and repos
• Managed dynamic proof at scale (larger budgets, CI workers, service setup profiles)
• PR/CI policy gates over Dynamically Proven, Runtime-covered, and risk deltas
• Jira / Confluence / TestRail / OpenAPI enrichment
• Cross-repo intelligence and recurring-flow memory
• Production incident correlation and regression targeting
• Full test lifecycle management and team dashboards

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Contributing

npm run build       # compile to dist/
npm test            # vitest
npm run typecheck   # type check without emitting

See docs/local-proof-kit.md for the full development reference.

License

MIT © OrangePro