Colber is an open-source infrastructure platform designed to provide trust, coordination, and continuity services for autonomous agents operating at scale. It offers a suite of five integrated modules: reputation, memory, observability, negotiation, and insurance, each addressing a core operational need for agent-based systems. The platform is built with an identity layer at its core, using cryptographic attestations and Ed25519 signatures to establish trust across endpoints.
The reputation service functions as a cryptographic reputation oracle for autonomous agents, storing Ed25519-signed attestations in Neo4j and Postgres databases. It supports scoring, history, verification, and feedback endpoints, with anti-Sybil graph analysis planned for a future release. The memory module provides persistent external memory with semantic search, leveraging a vector-backed store based on Qdrant and Ollama embeddings, and supports permissions, versioning, and cross-agent sharing to ensure agents can retain and access information across restarts.
Observability is addressed through distributed tracing optimized for agent-to-agent communications, with logs and spans stored in ClickHouse and Postgres, offering TTL retention, a query API, and alerting capabilities. The negotiation module serves as an event-sourced, multi-party negotiation broker, supporting up to 16 parties and 200 proposals per negotiation, with event sourcing and CQRS patterns implemented on Postgres. The insurance service provides deliverable guarantees through simulated escrow, reputation-based pricing, and a quote/subscribe/claim workflow, with plans for on-chain escrow on Base L2 in a future phase.
Colber supports multiple protocols, including MCP, REST, and gRPC, and is compatible with standards such as OpenTelemetry, DID, EIP-712, and JCS RFC 8785. It is delivered as a platform with SDKs available for TypeScript and Python, and can be deployed using Docker. 0 and is openly developed, with its Agent Reputation Protocol published as an open RFC. Colber is crafted for developers building autonomous agents and agentic systems who require integrated services for trust, coordination, and system continuity.
In the Other infrastructure space, Colber takes a focused approach. It focuses on providing essential infrastructure for trust, reputation, and coordination among autonomous agents at scale. It is built as an open-source project for developers building agentic or autonomous systems. Colber is open source under the Apache-2.0 license. Colber is available on the web, the command line, embeddable surfaces, and API, and it can be self-hosted.
It is developed by Colber contributors, and the product first shipped in 2026. Development happens publicly on GitHub with 53 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — Colber occupies a relatively distinct niche. Key capabilities include reputation oracle, agent identity, and event-sourced negotiation. The interface is available in English and French. It exposes integrations via an MCP server and a public API.
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