JSON Repair
json-repairRepair common malformed JSON with an auditable deterministic repair log.
local-preview← All Tools Malformed model outputRepair JSON and inspect every deterministic change. Oversized API responseExtract the exact fields needed before model context. Unknown large structureKeep representative values and explicit truncation markers. Linked transformationExport a bounded request for
🧰 Context Workbench
Inspect, repair, extract, and shrink context before it reaches a model.
GUIDED CONTEXT WORKBENCH · DELIBERATE ACTIONS ONLY
Choose one context job
Mode links select a view only. Query strings never load payloads, run tools, send requests, or restore prior work.
SELECTED MODE
Repair
Input: Malformed structured output
Deliberate action: Preview deterministic repair
Result: Repaired output and exact receipt
Continue to the preserved browser-local repair controls below. Nothing runs when a mode is selected.
SELECTED MODE
Distill
Input: Oversized context
Deliberate action: Build a bounded Context Pack
Result: Model-ready pack and report
Continue to the preserved browser-local distill controls below. Nothing runs when a mode is selected.
SELECTED MODE
Pipeline
Input: One submitted context value
Deliberate action: Compose and validate up to five steps
Result: Local previews and inert HTTP/MCP/recipe exports
SELECTED MODE
Handoff
Input: Submitted agent state
Deliberate action: Build an Agent Handoff Pack
Result: Reviewable handoff artifact
Continue to the preserved browser-local handoff controls below. Nothing runs when a mode is selected.
SELECTED MODE
Review
Input: Submitted evidence
Deliberate action: Build a review pack
Result: Escaped deterministic report
Continue to the preserved browser-local review controls below. Nothing runs when a mode is selected.
SELECTED MODE
File
Input: One browser-local file
Deliberate action: Process bounded chunks locally
Result: Bounded output and file manifest
Continue to the preserved browser-local file controls below. Nothing runs when a mode is selected.
VISUAL PIPELINE · 1–5 ORDERED STEPS
Compose locally, then export deliberately
Every step names its binding. Local preview supports three tools; the other eleven remain visible and export-only.
Canonical 14-tool pipeline catalog
JSON Query
json-queryExtract bounded values with simple JSONPath-style dot, bracket, index, and wildcard paths.
local-previewJSON Shrink
json-shrinkShrink JSON with explicit in-band truncation markers and byte/token estimates.
local-previewStructured Output Rescue
structured-output-rescueRepair, canonicalize, schema-check, and optionally validate tool-call JSON without inventing or coercing values.
export-onlyContext Distill
context-distillProject, sort, deduplicate, and reduce JSON records or logs to a hard byte budget with explicit omission evidence.
export-onlyAgent Contract Check
agent-contract-checkDiff saved/current tool schemas, validate arguments, and emit one bounded retry-safety hint without executing the tool.
export-onlyJSON Formatter
json-formatterFormat, minify, or validate JSON.
export-onlyCSV to JSON
csv-to-jsonConvert CSV rows to JSON.
export-onlyJSON to CSV
json-to-csvConvert JSON arrays to CSV.
export-onlyCSV ↔ JSONL Converter
csv-jsonl-converterConvert CSV rows to JSONL records and JSONL back to CSV for agent datasets.
export-onlyBase64 Encode / Decode
base64Encode or decode Base64 text.
export-onlyURL Encoder / Decoder
url-encoderEncode or decode URL text.
export-onlyMarkdown Cleaner / Link Stripper
markdown-cleanerClean Markdown for agents by stripping links, images, HTML, and repeated navigation.
export-onlyLog Context Trimmer
log-context-trimmerTrim noisy logs into agent-ready context with token savings.
export-onlyOrdered steps
Binding choices are limited to the submitted input or a past step.
Nothing has run or been sent. Choose a mode or preview locally.
Explicit exports
All three artifacts come from one admitted canonical composition. Building creates browser-local Blob artifacts; it does not submit them.
HTTP POST /api/pipeline
MCP run_pipeline
Inert recipe
LOCAL PREVIEW · API/MCP EXPORT
Start with the outcome
No network request runs during paste or preview. Load sample → Run locally → Inspect receipt → Copy API or MCP request.
THREE USEFUL STARTS
Choose the job you need to finish
Each path loads a reviewable sample and runs through the same deterministic browser-local cores used by HTTP and MCP.
- Format
- —
- Shape
- —
- Exact size
- —
- Estimated tokens
- —
- Risk flags
- —
Transformation receipt
Export the same request
Nothing is sent automatically. Pick a format and copy it into your own HTTP or MCP client.
Versioned workflow recipe
Portable review artifact only. Import, dry review, and Context recipe diagram generation never execute or send the recipe.
SVG source
Advanced review packs
CONTEXT OPS CA3–CA12 · BROWSER-LOCAL
Build a job-first Context Pack
Prepare API, CI, RAG, handoff, contract, evaluation, failure, accessibility, patch, log, structured-data, HTTP-security, or file-integrity review context for one model turn. Every omission stays visible in a utilito.context-pack.v1 receipt; submitted values are never summarized by a model.
Nothing is uploaded. Start with a sample or use the current Context input.
Context Pack receipt
Copy the same Context Pack request
Available only after a successful local build. The request uses response_mode: full and sends nothing until you submit it.
LOCAL FILE — NEVER UPLOADED
Bounded file mode
Inspect JSONL, CSV, logs, or a top-level JSON array in bounded chunks. Monolithic JSON objects fail honestly instead of being buffered or uploaded.
Choose a local file. No request will be made.
Deterministic file manifest
Start with the job, not the tool
repairextractshrinkPOST /api/run or hosted MCP.run_toolLinked API endpoints
POST /api/run · POST /api/batch · POST /api/pipelineWhat this tool does
Context Workbench previews deterministic repair, extraction, and reduction locally, then exports the same API or MCP request.
Why it is useful
A human can inspect exact byte changes and visible repairs before any context is sent to a server or model.
Local product front door
Paste once, inspect shape and size, choose a job, preview the result, then copy JSON, curl, or MCP arguments.
Exact receipts
Bytes are exact. Token counts are clearly labeled estimates. Repairs and truncation remain visible.
Privacy note
Paste and preview stay in this browser. Exported requests are inert until you submit them.
Important limitation
Do not paste secrets or regulated data. Server execution remains bounded by the published API limits.