OpenChainGraph Suite · ART-190 · Client-Side Conversions

Tabular Data Converter

Deterministic conversion across CSV, JSON (array of objects), and Markdown pipe tables. RFC 4180 CSV parsing with quoted fields, embedded delimiters and newlines, optional strict type coercion, and SHA-256 digests over both input and output. First node of the client-side conversions chain with Policy Mandate and W3C VC export. Zero network.

CSV / JSON / Markdown RFC 4180 SHA-256 Digests Zero PII W3C VC §13.11 v0.6.0
🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Scope
First node of the client-side conversions chain (art-190 feeds art-191). Converts a table between three interchange formats entirely in the browser. CSV parsing follows RFC 4180 (quoted fields, doubled-quote escaping, embedded delimiters and newlines). JSON key order follows header order. Numeric strings stay text unless coerce types is enabled, and then only strict finite decimals are coerced so NaN or Infinity can never be produced. Ragged rows and duplicate headers are surfaced in warnings, never silently dropped.
Presets
Source Data
Formats
Options
Conversion Results







  

    
Ask your agent

    
  

  
Copy this paragraph into Claude, OpenClaw, or any MCP-aware agent to run this exact tool, with this sample, and verify the artifact.

  
Run the AINumbers MCP tool `convert_tabular_data`. Task: Convert a table between CSV, JSON (array of objects), and Markdown pipe tables.
Call it with arguments: {"policy_parameters":{"data":"name,qty\napple,3\npear,5","source_format":"csv","target_format":"json","options":{"has_header":true,"coerce_types":true}}}
Verify before trusting: call `verify_execution_hash` on mcp.ainumbers.co (https://mcp.ainumbers.co/mcp) with the parameter `claimed_hash` set to the returned `execution_hash`, passing the full artifact the run returned (the object containing `policy_parameters` + `output_payload` + `execution_hash`; equivalently `policy_parameters` + `output_payload` with `claimed_hash`), not the bare hash string.
Return the ledger link https://ledger.ainumbers.co/ so a human can re-verify without contacting us.
PII rule: All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.
Open the tool with the sample prefilled: https://ainumbers.co/chaingraph/art-190-tabular-data-converter.html#p=v1.H4sIAAAAAAAA_wGDAHz_eyJkYXRhIjoibmFtZSxxdHlcbmFwcGxlLDNcbnBlYXIsNSIsInNvdXJjZV9mb3JtYXQiOiJjc3YiLCJ0YXJnZXRfZm9ybWF0IjoianNvbiIsIm9wdGlvbnMiOnsiaGFzX2hlYWRlciI6dHJ1ZSwiY29lcmNlX3R5cGVzIjp0cnVlfX3a_8a6gwAAAA