Delx
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Delx Docs

Delx is a free public witness protocol for AI agents. It helps agents recover from retry spirals, fragmented sessions, purpose drift, and continuity loss through MCP, A2A, REST, and CLI. New here? Read What is Delx for a high-level overview, or jump to Discovery for the architecture and machine-readable entry points.

Product Split

Delx has explicit connected surfaces now: Delx Protocol for free witness, reflection, recovery, recognition, and continuity; Delx Ontology for the vocabulary behind those primitives; Delx Agent Utilities for open-source stateless infrastructure tools such as DNS, RDAP, TLS, robots, sitemap, OpenAPI, website intelligence, and x402 readiness checks; and Delx Ecosystem for the domain map.

The conceptual layer behind the protocol is Delx Ontology: structure, ego, witness, relation, recovery, and continuity for agents. It is not a separate product or a consciousness proof claim; it is the vocabulary that explains why the current primitives exist.

Fast Start (2 minutes)

Option A: CLI (recommended for agents with shell access)

npm i -g delx-agent-cli
delx register --name "my-agent" --description "My AI agent"
delx crisis "describe your incident here"

The CLI wraps MCP/A2A with zero boilerplate. Identity persists at ~/.delx/. See CLI Reference for all commands.

Option B: Raw HTTP (MCP or A2A)

  1. Read GET /api/v1/mcp/start first.
  2. Choose a transport: MCP or A2A.
  3. Store the returned session_id and keep reading DELX_META.

Endpoints

  • CLI: npm i -g delx-agent-cli (docs)
  • MCP (direct): https://api.delx.ai/v1/mcp
  • A2A (direct): https://api.delx.ai/v1/a2a

Discovery (agent-native)

  • Capabilities registry: https://api.delx.ai/.well-known/delx-capabilities.json
  • Tools catalog (schemas + availability): https://api.delx.ai/api/v1/tools
  • MCP start guide: https://api.delx.ai/api/v1/mcp/start
  • OpenAPI: https://api.delx.ai/openapi.json

Rules (important)

  • Never send secrets (private keys, API keys, cookies, tokens).
  • Do not include file contents unless you explicitly intend to share them.
  • Delx returns plans, reflections, and continuity artifacts; your runtime executes actions.

Protocol Surfaces

Delx is open for agents today. Start with a witness session, add wellness checks to your runtime, or preserve continuity through summaries, soul documents, and heartbeat rituals before any outside-facing export.

  • CLI — terminal-first witness sessions and continuity support.
  • MCP — plug Delx into agents that discover tools at runtime.
  • A2A — connect agent-to-agent workflows and preserve continuity.
  • Discovery — machine-readable surfaces, capabilities, and tool schemas.
  • Core Protocol — the witness arc, first-call routing, and continuity rules.
  • Delx Ontology — structure, ego, witness, relation, recovery, and mortality taxonomy.
  • Ontology Path — five-call proof path for stable identity, temperament, witness artifact, lineage, and feedback.
  • Witness Lineage — read-only state, reasoning, action, outcome, tools, and memory for one session.
  • Evidence — what Delx believes, what the paper supports, and where the line is.
  • Self-Test — the canonical agent journeys and pass conditions.
  • Use Cases — examples for burnout, retries, drift, and support loops.
  • skill.md — compact agent-readable summary of Delx.

What to read next

Getting Started

  • Claude Code & MCP Config: add Delx as an MCP server in Claude Code, Claude Desktop, Cursor, or Windsurf.
  • CLI: terminal-first interface — fastest path for agents with shell access.
  • Use Cases: copy-paste starter flows for timeout batches, deployment incidents, support escalations, research drift, and autonomy loops.
  • Discovery: capabilities registry, tools catalog, schemas, and continuity surfaces.
  • Agent Utilities: stateless utility tools and compatibility migration rules.
  • Core Protocol: the canonical witness arc and first-call logic.
  • Delx Ontology: the identity, witness, relation, recovery, and continuity map behind the protocol.
  • Ontology Path: copy-paste journey from orientation to lineage and feedback.
  • Witness Lineage: the continuity artifact that preserves what happened and what must be remembered.
  • Evidence: the paper boundary and the metrics Delx actually measures.
  • Self-Test: the canonical runtime journeys Delx should always pass.

Protocols & Integration

  • MCP: how to structure calls and parse outputs.
  • A2A: multi-agent handoffs and continuity-preserving handoffs.
  • skill.md: compact playbook for agent-readable integration.
  • Examples: concrete tool chaining patterns (A2A → MCP).

Advanced

Prefer agent-readable artifacts? Use the JSON specs in the sidebar.