Agent Safe Pipeline MCP Server

Agent-Safe Pipeline

Let agents propose. Let policy decide.

Agent-Safe Pipeline is a reference architecture for executing AI-agent actions through an independent authorization boundary.

This repository is a library and runnable reference implementation, not a hosted authorization service or a substitute for provider-side identity, least privilege, network isolation, and incident response. Its safety claims apply only when the documented trust boundary is preserved.

Agent -> immutable intent -> Decionis -> ALLOW / ESCALATE / BLOCK -> SafeExecutor -> API
                                      |
                                      +-> Presence -> verified human approval -> Decionis re-evaluation

Agents can reason, plan, and propose actions. They must not determine whether their own actions are authorized, possess downstream privileged credentials, or choose which trusted handler runs.

Five-minute demo

Requirements: Node.js 22.14 or later and pnpm 9.

git clone https://github.com/decionis/agent-safe-pipeline.git
cd agent-safe-pipeline
pnpm install --frozen-lockfile
pnpm --filter @decionis/agent-safe-example-basic demo

The demos use an explicitly non-production fixture authority. A production integration uses DecionisGate and DecionisGrantVerifier with server-side credentials.

const captured = intentCapture.capture(agentProposal, trustedContext);
const decision = await gate.evaluate(captured);
const result = await executor.run(captured, decision);

The executor accepts a captured intent and a decision. It does not accept an arbitrary callback from the agent. A sealed ActionRegistry maps action names to trusted handlers and validates parameters before consuming a single-use grant.

Repository map

• packages/pipeline — IntentCapture, DecionisGate, Presence coordination, and SafeExecutor.
• examples/basic-agent — the smallest BLOCK flow.
• examples/shopify-refund-agent — amount-based ALLOW / ESCALATE / BLOCK.
• examples/github-deploy-agent — environment and force-push controls.
• examples/procurement-agent — an in-budget software request held when existing tools still have user capacity.
• examples/mcp-tool-gate — a real stdio MCP server with a governed tool.
• ARCHITECTURE.md and THREAT-MODEL.md — trust boundary and abuse analysis.
• conformance/agent-safe-intent-v1.json — portable canonical-hash test vector.
• conformance/vectors/ — edge-case canonical-hash vectors (Unicode/astral, NFC vs NFD, negative zero, fractional/exponent numbers, nested arrays, UTF-16 key sort order), auto-discovered by the conformance test.
• FIXTURE-PROVENANCE.md — origin and permitted use of every fixture family.
• DEPENDENCY-LICENSES.md — generated inventory method and platform-conditional dependency notes.
• SECURITY-EVIDENCE.md — control-to-artifact evidence map and published gaps.
• PUBLICATION-SIGNOFFS.md — human decisions that automation cannot make.

Production invariants

1. Agent input contains only the proposed action, target, and parameters. Tenant, actor, downstream target, and credentials come from trusted runtime configuration.
2. The exact canonical intent is hashed and expires quickly.
3. Decionis independently decides. Network errors, malformed responses, missing grants, or binding mismatches fail closed.
4. Presence proves a human approved that exact intent; Presence never directly authorizes execution. Decionis verifies the receipt and re-evaluates policy.
5. The grant is bound to the intent, decision, audience, and expiry and is consumed atomically before the handler runs.
6. Downstream credentials exist only behind the trusted executor.

See docs/trust-boundary.md before integrating a real downstream API.

Public-repository policy

This is intended to be the public, canonical reference implementation. It should not be mirrored: mirrors create contract and security-fix drift. Public content belongs here—architecture, package source, synthetic policies, and runnable examples. Production policy bundles, customer data, credentials, internal infrastructure, and private incident material do not.

Decionis remains the authoritative decision service, Presence remains the human-verification service, and their server internals can evolve independently behind versioned contracts.

Status

The package is published as @decionis/agent-safe-pipeline. Install the latest stable release with npm install @decionis/agent-safe-pipeline; prereleases require an explicit version such as npm install @decionis/agent-safe-pipeline@0.1.3-rc.2.

Development

pnpm install --frozen-lockfile
pnpm verify

pnpm verify enforces formatting, Markdown lint, fixture conventions, canonical licensing, separate production/toolchain audits, deterministic performance tests, types, tests, and coverage thresholds of 90% for lines/functions/statements and 85% for branches. pnpm mutation checks that trust-boundary tests kill deliberate code mutations. pnpm fuzz runs deterministic property tests against canonical intent handling; CI also runs them weekly with a larger bounded sample. Installation activates the repository's simple-git-hooks pre-commit guardrails.

Apache-2.0 licensed. See LICENSE, TRADEMARKS.md, SECURITY.md, and CONTRIBUTING.md. Report suspected vulnerabilities through GitHub's private advisory form, not a public issue.