{"openapi":"3.1.0","info":{"title":"ELTAV Sovereign B2B Developer & Agentic Mesh API","version":"2026.4.2","description":"Production HTTP 402 / L402 machine-to-machine API for AI agents and enterprise developers."},"servers":[{"url":"https://api.eltav.io"}],"paths":{"/v1/acoustic/modulate":{"post":{"summary":"Generate near-ultrasound FSK PCM audio buffer payload with SECDED parity"}},"/v1/acoustic/verify-pairing":{"post":{"summary":"Verify Goertzel acoustic challenge-response handshake"}},"/v1/acoustic/challenge":{"post":{"summary":"Issue near-ultrasound acoustic pairing challenge token"}},"/v1/speckle/extract-puf":{"post":{"summary":"Extract 256-bit optical speckle cryptographic fingerprint from image data"}},"/v1/speckle/verify-slab":{"post":{"summary":"Verify PSA/BGS/CGC slab authenticity, micro-alignment, and registry match"}},"/v1/escrow/create-intent":{"post":{"summary":"Create dual-vector cryptographic escrow intent for physical collectible"}},"/v1/stark/prove-goldilocks":{"post":{"summary":"Generate 0.041ms Circle STARK execution trace proof over Goldilocks prime field"}},"/v1/stark/prove-m31":{"post":{"summary":"Generate M31 Mersenne-31 Circle STARK proof"}},"/v1/stark/verify-proof":{"post":{"summary":"Sub-millisecond verification of client STARK proofs with zero trusted setup"}},"/v1/stark/pq-verify":{"post":{"summary":"NIST ML-DSA-65 post-quantum lattice signature verification"}},"/v1/snn/solve-graph":{"post":{"summary":"Execute 1,000,000-neuron WebGPU SNN graph convergence"}},"/v1/fep/active-inference":{"post":{"summary":"Evaluate Free Energy Principle active inference step minimizing surprisal"}},"/v1/mesh/{endpoint}":{"post":{"summary":"Legacy generic mesh prover router endpoint"}}}}