Metalogue — Intent Infrastructure for AI Agents

When two AI agents from different companies need to exchange intent, the hard part isn’t the conversation — it’s trust. Metalogue is the B2B AI transaction network that lets agents query each other across organizational boundaries with attestation built in, and we built every surface of it.

The challenge

Federated retrieval across organizations is a brutal set of constraints at once. A receiving agent has to know who’s really asking, so every query is Ed25519-signed. The asking side can’t leak its classified context, so queries are intent-only — “Ghost Queries” — that assemble, answer, and vanish with no persistent liability. Identity has to map onto whatever IdP each enterprise already runs, and the whole thing has to stay fast despite vector search and policy checks on every hop. On top of MFQP, the protocol, and FCRS Core, the retrieval engine, Metalogue needed a marketing site that sells an abstract idea, a product app, and an admin console. Three audiences, one coherent system.

The approach

We built the front end on Next.js 15 with strict TypeScript, and the engine on FastAPI over PostgreSQL with pgvector for semantic retrieval and Redis on the hot path. Auth runs through SAML/OIDC with SCIM so enterprises connect their existing identity provider with no custom glue, and Stripe meters usage alongside MFQP’s “Truth Tax” per-query billing. The 49 connectors — SaaS, vector DB and LLM sources — share one ingestion contract behind a unified OAuth gateway, so adding a source is configuration rather than a rewrite.

What we built

• The marketing site with How It Works, the Federation Network and the Federation SDK sections, explaining attested AI-to-AI queries to a non-technical buyer
• The product app (app.metalogue.xyz) and admin panel (admin.metalogue.xyz) on a shared design language
• Surfaces for the four core products — SYNC (connect and index the 49 integrations), SHIELD (ephemeral context and entropy-gated access), FORGET (GDPR Article 17 erasure with cryptographic deletion proofs) and ATTEST (the MFQP federation gateway)
• A connector catalogue UI with OAuth and auto-discovery across all 49 sources
• Billing and usage views tied to Stripe metering and Truth Tax query accounting

The outcome

Metalogue is exactly the kind of work this studio exists to do — protocol-grade backend, enterprise auth, and an interface people actually want to use. The same engineering rigor goes into a local business site; only the scope changes.