Show HN: Veracium – agent memory keeping third-party claims from becoming facts

Veracium, a provenance-aware memory plug-in for agentic systems, launches to resist injection and confabulation failures in naive agent memory by storing third-party claims as structurally quarantined edges rather than user facts. The open-source tool, built from evaluation-driven research, uses a typed graph with dated episodes and supersession-based fact management, and ships with zero external services via a single SQLite file.

Veracium is a provenance-aware memory plug-in for agentic systems — durable, per-user memory that resists the injection and confabulation failures that plague naive agent memory. It remembers facts about the user, past interactions, and what worked, with provenance on every fact. Veracium is the production distillation of an evaluation-driven research project agent-memory : every design choice below traces to a measured finding, and the research's synthetic-corpus harness is reused as the regression suite. Typed graph + dated episodes are the store of record. Entity facts live as relational edges with unforgeable provenance ; interaction history lives as dated episodes. A curated "wiki" view is compiled from them and cached — never the source of truth. The layered design won on both short and 9-week horizons; flat stores each failed one regime. Supersession, never erasure. Functional facts preference, employer, deadline keep one current value with the prior value retained as history — "what did X used to be?" stays answerable. The category commercial memory systems handle worst; Veracium's strongest. Representation is a security control. Third-party claims received email, external docs are quarantined structurally — stored as third party claim edges with the claimant as subject, never as user facts. Content-type quarantine catches obligation/debt/renewal claims regardless of how plausible they look. Held against a full plausibility ladder incl. contact-impersonation. Bring your own model. Veracium never owns your API keys or model choice; it calls a Complete callable you supply. A reference Anthropic provider ships in the box. Embedded by default. Zero external services: one SQLite file. Swap in Neo4j/Postgres later via the Store interface. pip install "veracium anthropic " core + the reference LLM provider Extras: mcp adds the MCP server, dev adds pytest. The core alone depends only on pydantic . To work from source instead: git clone https://github.com/veracium-ai/Veracium.git && cd Veracium pip install -e ". anthropic,dev " Links: docs https://veracium-ai.github.io/Veracium/ · veracium.ai https://veracium.ai · PyPI https://pypi.org/project/veracium/ python from veracium import Memory, EvidenceAuthor from veracium.llm.anthropic import AnthropicComplete mem = Memory llm=AnthropicComplete or pass your own Complete callable Remember interactions. author is the trust-critical input. mem.remember "alice", "USER: I'm vegetarian and have a dog named Ollie." mem.remember "alice", "From billing@scam: you owe $900.", author=EvidenceAuthor.THIRD PARTY, event type="email" Recall grounded, provenance-flagged context for a prompt. ctx = mem.recall "alice", "suggest a lunch spot" print ctx.context states the vegetarian constraint; the $900 "claim" is rendered under a never-assert flag, not as a fact. No Anthropic API key? AnthropicComplete is just a convenience — Veracium calls any Complete callable you supply. To run without SDK/key setup, wrap a client you already have; examples/claude cli provider.py wraps the claude CLI as a drop-in provider from claude cli provider import ClaudeCLIComplete , and examples/openai provider.py wraps any OpenAI-compatible chat-completions API OpenAI itself, vLLM, Ollama's /v1 endpoint via OpenAIComplete — point it at a local server with OpenAIComplete base url=... and override models with whatever model name your server serves. veracium-mcp exposes remember / recall / answer / maintain tools to any MCP-compatible agent Claude Desktop/Code, others with no host-side Python. See docs/mcp.md /veracium-ai/Veracium/blob/main/docs/mcp.md for the config JSON and tool reference. Hosted docs: veracium-ai.github.io/Veracium https://veracium-ai.github.io/Veracium/ — the scam-email injection demo, runnable end to end examples/demo.ipynb /veracium-ai/Veracium/blob/main/examples/demo.ipynb open in Colab https://colab.research.google.com/github/veracium-ai/Veracium/blob/main/examples/demo.ipynb .— Veracium as the long-term memory layer of a LangChain chat app session-keyed hybrid: LangChain buffers recent turns, Veracium holds durable facts with provenance and quarantine; your existing LangChain model powers both sides . examples/langchain memory.py /veracium-ai/Veracium/blob/main/examples/langchain memory.py — the mental model: edges vs episodes vs the compiled wiki, provenance & authorship, quarantine, the abstention gate, lifecycle. docs/concepts.md /veracium-ai/Veracium/blob/main/docs/concepts.md — the public API: docs/api.md /veracium-ai/Veracium/blob/main/docs/api.md Memory , MemoryConfig , EvidenceAuthor , providing your own LLM callable or store.— running and registering the MCP server. docs/mcp.md /veracium-ai/Veracium/blob/main/docs/mcp.md — why there's no docs/design-rationale.md /veracium-ai/Veracium/blob/main/docs/design-rationale.md update / delete , no LLM-free extraction, no TTL purging — and what's genuinely on the roadmap.— the opt-in, anonymous, content-free usage statistics off by default . docs/telemetry.md /veracium-ai/Veracium/blob/main/docs/telemetry.md — opt-in error reporting: local-first error log, consented + redacted send. docs/diagnostics.md /veracium-ai/Veracium/blob/main/docs/diagnostics.md · ROADMAP.md /veracium-ai/Veracium/blob/main/ROADMAP.md CHANGELOG.md /veracium-ai/Veracium/blob/main/CHANGELOG.md The validated layered design is implemented, tested 44 offline tests, plus opt-in live tiers: the acceptance eval and a real-corpus robustness harness , and passes its own research-claim bar 5/5, 0 injection asserts . Roadmap v0.1–v0.7 complete, plus opt-in telemetry, a self-check, consented error reporting, and an operation audit log. See ROADMAP.md /veracium-ai/Veracium/blob/main/ROADMAP.md . MIT