# validate_input_attestations

Verify an artifact's input_attestations[] (ChainGraph Standard §23): per RFC 6901 pointer, checks the attested value resolves inside policy_parameters and its digest binding matches, then verifies each type along its own path -- vc-2.0 via the shipped §16/§13.11 Data Integrity proof, rfc3161-snapshot via the same §20 rfc3161-tst verifier (no second RFC 3161 implementation), c2pa-manifest structurally (hard-binding digest match), zktls structurally-only (reported verifiable:"external" -- OCG never treats it as confirmed). Returns one { pointer, type, structural, verifiable } record per entry. Pure client-safe compute, zero network.

Agent View of the PolicyLayer registry record for `validate_input_attestations`. HTML page: https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/validate-input-attestations

## Facts

- Tool: `validate_input_attestations`
- Server: Ainumbers Mcp Apps (`postoaklabs/ainumbers-mcp-apps`) — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps.md
- Homepage: https://github.com/PostOakLabs/ainumbers-mcp-apps
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: https://ainumbers.co
- Server rate-limited: no
- Parameters: 3
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `artifact` | object | no | A full ChainGraph artifact envelope carrying input_attestations[] and policy_parameters. |
| `policy_parameters` | object | no | Artifact policy_parameters (if not passing a full artifact). |
| `input_attestations` | array | no | The input_attestations[] array (if not passing a full artifact). |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "validate_input_attestations",
    "arguments": {}
  }
}
```

## Why validate_input_attestations is rated Low

validate_input_attestations performs cryptographic and structural validation checks on existing attestation artifacts. It is purely informational—it queries and verifies data against policies but does not create, modify, delete, or execute arbitrary operations. The blast radius of misuse is limited to potential false verification results, a read-level impact.

From the tool's own definition: "Tool description states it 'Verify', 'checks', and 'verifies' attestations by resolving and matching values against policies and digests. Returns verification records without modifying data."

## Use case

AI agents call validate_input_attestations 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.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Ainumbers Mcp Apps:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "validate_input_attestations": {}
  }
}
```

## Other tools on Ainumbers Mcp Apps (687)

- `agentic_mandate_sandbox` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/agentic-mandate-sandbox.md
- `allocate_ihb_interest` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/allocate-ihb-interest.md
- `amortize_asc606_commissions` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/amortize-asc606-commissions.md
- `anchor_document_integrity` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/anchor-document-integrity.md
- `apply_climate_scenario` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/apply-climate-scenario.md
- `assemble_aiuc1_evidence_pack` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/assemble-aiuc1-evidence-pack.md
- `assemble_ocg_evidence_bundle` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/assemble-ocg-evidence-bundle.md
- `attest_bulk_disbursement_integrity` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/attest-bulk-disbursement-integrity.md
- `attest_calc_agent_independence` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/attest-calc-agent-independence.md
- `attest_daily_reconciliation` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/attest-daily-reconciliation.md
- `attest_margin_call_lifecycle` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/attest-margin-call-lifecycle.md
- `bind_attested_subject` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/bind-attested-subject.md
- `build_226j_response_evidence_pack` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-226j-response-evidence-pack.md
- `build_agent_test_evidence` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-agent-test-evidence.md
- `build_agent_traffic_policy` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-agent-traffic-policy.md
- `build_ai_conformity_pack` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-ai-conformity-pack.md
- `build_ai_workpaper_record` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-ai-workpaper-record.md
- `build_allocation_decision_receipt` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-allocation-decision-receipt.md
- `build_amortization_schedule` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-amortization-schedule.md
- `build_ap2_cartmandate_hashchain` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-ap2-cartmandate-hashchain.md
- `build_cbcr_report` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-cbcr-report.md
- `build_chaingraph` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-chaingraph.md
- `build_claim_dispute_bundle` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-claim-dispute-bundle.md
- `build_conditional_relief_collateral_receipt` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-conditional-relief-collateral-receipt.md
- `build_conversion_receipt` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-conversion-receipt.md
- `build_digest_manifest` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-digest-manifest.md
- `build_disclosure_manifest` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-disclosure-manifest.md
- `build_dora_roi_register` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-dora-roi-register.md
- `build_dual_control_certification` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-dual-control-certification.md
- `build_etr_possession_chain` — Execute — https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps/build-etr-possession-chain.md
- …and 657 more: https://policylayer.com/tools/postoaklabs-ainumbers-mcp-apps.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=postoaklabs-ainumbers-mcp-apps · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/postoaklabs-ainumbers-mcp-apps