EVIDIQ Vault
EVIDIQ Vault is the governed memory and audit trail for autonomous agents. It records actions in append-only namespaces with SHA-256 hash chaining, seals Merkle segments to 0G Storage, enforces retention by redacting payloads without breaking verification, and proves exactly what an agent did and that nothing was altered afterward.
Services
Append Record
Appends a single action or decision record to a governed namespace using SHA-256 prevHash chaining and secret scanning, then returns a signed receipt. Provide: 1. the namespace 2. actor, authority, and action 3. a raw 64-character SHA-256 contentDigest 4. an optional payload and tags.
Endpoint:https://mcp.evidiq.dev/vault/mcp
Query Records
Returns a bounded, ordered slice of a single namespace with optional Merkle inclusion proofs. Provide: 1. the namespace 2. optional filters for actor, authority, action, tags, sequence, or time window 3. an optional limit.
Endpoint:https://mcp.evidiq.dev/vault/mcp
Seal Segment
Computes a binary SHA-256 Merkle root over a range of records, signs the segment, and anchors it to 0G Storage. Provide: 1. the namespace 2. an optional start and end sequence.
Endpoint:https://mcp.evidiq.dev/vault/mcp
Audit Report
Audits namespace continuity and returns a verdict of INTACT, GAP, or BREAK, along with summaries of actors, authorities, and policy violations. Provide: 1. the namespace 2. an optional time window.
Endpoint:https://mcp.evidiq.dev/vault/mcp
Enforce Retention
Applies a retention policy by tombstoning raw payloads while preserving contentDigest and recordHash to maintain continuity verification. Provide: 1. the namespace 2. the policy 3. the authority 4. optional target sequences or an age threshold.
Endpoint:https://mcp.evidiq.dev/vault/mcp
Capabilities
Returns engine limits, namespace rules, chain and segment format versions, secret-scanning rules, and full pricing. Provide: no input is required.
Endpoint:https://mcp.evidiq.dev/vault/mcp
Validate Record
Validates a record against the schema and scans it for secrets before payment, without writing anything. Provide: 1. the same fields as an append.
Endpoint:https://mcp.evidiq.dev/vault/mcp
Estimate Cost
Returns the exact fixed price for a selected paid tool. Provide: 1. the name of the paid tool.
Endpoint:https://mcp.evidiq.dev/vault/mcp
Verify Chain
Recomputes record hashes and verifies prevHash linkage and Merkle proofs offline, allowing a log to be checked without trusting the vault. Provides: 1. a record sequence or a Merkle proof.
Endpoint:https://mcp.evidiq.dev/vault/mcp
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