build_evidence_pack
Composes a session receipt (build_session_receipt logic), an optional §27.6 HA evidence bundle (ha_bundle_export logic, included only when ha_records is supplied and non-empty), and a disclosure manifest (build_disclosure_manifest logic) from one array of already-produced artifacts, all keyed to ...
This record as markdown: /tools/postoaklabs-ainumbers-mcp-apps/build-evidence-pack.md
What build_evidence_pack does on Ainumbers Mcp Apps
AI agents call build_evidence_pack to retrieve information from Ainumbers Mcp Apps without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
sd_jwt | boolean | — | When true, also return an SD-JWT export of the HA bundle (mirrors ha_bundle_export, default false; no-op when ha_records is absent). |
framing | string | — | Optional framing context for the session receipt's PTG-01 regulator prompt. |
artifacts | array | Yes | Already-produced artifacts this pack documents, in call order. |
ha_records | array | — | §27 human_accountability_records -- omit entirely for no HA section. |
room_label | string | — | Label for the disclosure-manifest room. |
session_id | string | — | Session identifier to embed in the receipt, if the caller tracks one. |
subject_hash | string | — | The sha256: subject hash the pack documents (defaults to artifacts[0].execution_hash if omitted). |
kernel_version | string | — | Version tag of the kernel that produced verification_result. |
policy_version | string | — | Version tag of the policy the kernel was evaluated against. |
submission_receipt | string | — | Populate ONLY after a real transmission -- never fabricate (same rule as ha_bundle_export). |
verification_result | string | — | The §16/§18/§20 verdict. |
Parameters from the server's own tool schema.
Why build_evidence_pack is rated Low
Aggregates and formats existing artifacts into a pack; no data modification or external side effects.
From the tool's definition Composes session receipt, evidence bundle, disclosure manifest from already-produced artifacts
Risk signalsHigh parameter count (14 properties)
Attacks that exploit this kind of access
The rule that runs build_evidence_pack safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Ainumbers Mcp Apps, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For build_evidence_pack, this is the rule to start with:
build_evidence_pack is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Ainumbers Mcp Apps, apply this rule, and every build_evidence_pack call is checked against it from then on.
Questions about build_evidence_pack
Composes a session receipt (build_session_receipt logic), an optional §27.6 HA evidence bundle (ha_bundle_export logic, included only when ha_records is supplied and non-empty), and a disclosure manifest (build_disclosure_manifest logic) from one array of already-produced artifacts, all keyed to the same input hashes -- replacing what today takes 4-6 separate tool calls with hand-carried hashes. Calls the same in-process functions those standalone tools use; if any one section fails to build, the whole call fails isError:true with that section's own message -- no partial pack. It is categorised as a Read tool in the Ainumbers Mcp Apps MCP Server, which means it retrieves data without modifying state.
build_evidence_pack accepts 11 parameters: sd_jwt, framing, artifacts, ha_records, room_label, session_id, subject_hash, kernel_version, policy_version, submission_receipt, verification_result. Required: artifacts. The full parameter table on this page comes from the server's own tool schema.
Register the Ainumbers Mcp Apps MCP server in PolicyLayer and add a rule for build_evidence_pack: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Ainumbers Mcp Apps. Nothing to install.
build_evidence_pack is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the build_evidence_pack rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for build_evidence_pack. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
build_evidence_pack is provided by the Ainumbers Mcp Apps MCP server (postoaklabs/ainumbers-mcp-apps). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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