|
| 1 | +# REST API Reference |
| 2 | + |
| 3 | +The tabletalk web server (`tabletalk serve`) exposes a REST API consumed by the web UI. All endpoints are also available for programmatic use. |
| 4 | + |
| 5 | +**Base URL:** `http://localhost:5000` (default) |
| 6 | + |
| 7 | +--- |
| 8 | + |
| 9 | +## Health |
| 10 | + |
| 11 | +### `GET /health` |
| 12 | + |
| 13 | +Check server readiness. |
| 14 | + |
| 15 | +**Response 200 — ready:** |
| 16 | +```json |
| 17 | +{ |
| 18 | + "status": "ok" |
| 19 | +} |
| 20 | +``` |
| 21 | + |
| 22 | +**Response 503 — degraded:** |
| 23 | +```json |
| 24 | +{ |
| 25 | + "status": "degraded", |
| 26 | + "issues": ["No manifests found — run tabletalk apply"] |
| 27 | +} |
| 28 | +``` |
| 29 | + |
| 30 | +--- |
| 31 | + |
| 32 | +## Configuration |
| 33 | + |
| 34 | +### `GET /config` |
| 35 | + |
| 36 | +Return the active LLM provider and model name. |
| 37 | + |
| 38 | +**Response:** |
| 39 | +```json |
| 40 | +{ |
| 41 | + "provider": "ollama", |
| 42 | + "model": "qwen2.5-coder:7b" |
| 43 | +} |
| 44 | +``` |
| 45 | + |
| 46 | +--- |
| 47 | + |
| 48 | +## Manifests |
| 49 | + |
| 50 | +### `GET /manifests` |
| 51 | + |
| 52 | +List all compiled manifests in the project's `manifest/` directory. |
| 53 | + |
| 54 | +**Response:** |
| 55 | +```json |
| 56 | +{ |
| 57 | + "manifests": ["customers.txt", "inventory.txt", "marketing.txt", "sales.txt"] |
| 58 | +} |
| 59 | +``` |
| 60 | + |
| 61 | +### `POST /select_manifest` |
| 62 | + |
| 63 | +Load a manifest and reset the conversation context. |
| 64 | + |
| 65 | +**Request:** |
| 66 | +```json |
| 67 | +{ |
| 68 | + "manifest": "sales.txt" |
| 69 | +} |
| 70 | +``` |
| 71 | + |
| 72 | +**Response:** |
| 73 | +```json |
| 74 | +{ |
| 75 | + "manifest": "sales.txt", |
| 76 | + "details": "DATA_SOURCE: duckdb - ...\nCONTEXT: sales ...\n..." |
| 77 | +} |
| 78 | +``` |
| 79 | + |
| 80 | +The `details` field contains the full manifest text in compact schema notation. Parse it with the web UI's `parseManifest()` function or use it as-is as LLM context. |
| 81 | + |
| 82 | +--- |
| 83 | + |
| 84 | +## Chat (streaming) |
| 85 | + |
| 86 | +### `POST /chat/stream` |
| 87 | + |
| 88 | +Main query endpoint. Streams SQL generation, execution results, and explanation as Server-Sent Events. |
| 89 | + |
| 90 | +**Request:** |
| 91 | +```json |
| 92 | +{ |
| 93 | + "question": "What is total revenue by month?", |
| 94 | + "manifest": "sales.txt", |
| 95 | + "auto_execute": true, |
| 96 | + "explain": true, |
| 97 | + "suggest": true |
| 98 | +} |
| 99 | +``` |
| 100 | + |
| 101 | +| Field | Type | Required | Default | Description | |
| 102 | +|-------|------|----------|---------|-------------| |
| 103 | +| `question` | string | Yes | — | Natural language question | |
| 104 | +| `manifest` | string | Yes | — | Manifest filename (e.g. `sales.txt`) | |
| 105 | +| `auto_execute` | boolean | No | `false` | Execute generated SQL | |
| 106 | +| `explain` | boolean | No | `false` | Stream plain-English explanation after execution | |
| 107 | +| `suggest` | boolean | No | `false` | Return 3 suggested follow-up questions | |
| 108 | + |
| 109 | +**Response:** `text/event-stream` |
| 110 | + |
| 111 | +Each line is a Server-Sent Event in the format: |
| 112 | + |
| 113 | +``` |
| 114 | +data: {"type": "...", ...} |
| 115 | +``` |
| 116 | + |
| 117 | +**Event types:** |
| 118 | + |
| 119 | +| Type | Payload | Description | |
| 120 | +|------|---------|-------------| |
| 121 | +| `sql_chunk` | `{"type":"sql_chunk","content":"SELECT"}` | Incremental SQL token | |
| 122 | +| `sql_done` | `{"type":"sql_done","sql":"SELECT ..."}` | Full generated SQL | |
| 123 | +| `results` | `{"type":"results","columns":["month","revenue"],"rows":[["2024-01",...]],"count":12}` | Query results | |
| 124 | +| `execute_error` | `{"type":"execute_error","error":"...","sql":"..."}` | SQL execution error | |
| 125 | +| `explain_chunk` | `{"type":"explain_chunk","content":"Revenue grew..."}` | Incremental explanation token | |
| 126 | +| `explain_done` | `{"type":"explain_done"}` | Explanation complete | |
| 127 | +| `suggestions` | `{"type":"suggestions","questions":["...", "...", "..."]}` | Follow-up suggestions | |
| 128 | +| `error` | `{"type":"error","error":"Select a manifest first"}` | Non-fatal error | |
| 129 | +| `done` | `{"type":"done"}` | Stream complete | |
| 130 | + |
| 131 | +**Example stream:** |
| 132 | + |
| 133 | +``` |
| 134 | +data: {"type": "sql_chunk", "content": "SELECT"} |
| 135 | +data: {"type": "sql_chunk", "content": " DATE_TRUNC"} |
| 136 | +data: {"type": "sql_chunk", "content": "('month', created_at)"} |
| 137 | +... |
| 138 | +data: {"type": "sql_done", "sql": "SELECT DATE_TRUNC('month', created_at) AS month, SUM(total_amount) AS revenue FROM orders GROUP BY 1 ORDER BY 1"} |
| 139 | +data: {"type": "results", "columns": ["month", "revenue"], "rows": [["2024-01-01", "15234.50"], ...], "count": 6} |
| 140 | +data: {"type": "explain_chunk", "content": "Revenue peaked in March"} |
| 141 | +... |
| 142 | +data: {"type": "explain_done"} |
| 143 | +data: {"type": "suggestions", "questions": ["Break that down by product", "Show month-over-month growth", "Which customers drove January revenue?"]} |
| 144 | +data: {"type": "done"} |
| 145 | +``` |
| 146 | + |
| 147 | +### `POST /fix/stream` |
| 148 | + |
| 149 | +Fix a failing SQL query. Same SSE format as `/chat/stream` but generates corrected SQL given an error. |
| 150 | + |
| 151 | +**Request:** |
| 152 | +```json |
| 153 | +{ |
| 154 | + "sql": "SELECT * FROM order WHERE id = 1", |
| 155 | + "error": "relation \"order\" does not exist", |
| 156 | + "manifest": "sales.txt" |
| 157 | +} |
| 158 | +``` |
| 159 | + |
| 160 | +**Response:** `text/event-stream` — same event types as `/chat/stream`. |
| 161 | + |
| 162 | +--- |
| 163 | + |
| 164 | +## Execution |
| 165 | + |
| 166 | +### `POST /execute` |
| 167 | + |
| 168 | +Execute SQL and return results (non-streaming). |
| 169 | + |
| 170 | +**Request:** |
| 171 | +```json |
| 172 | +{ |
| 173 | + "sql": "SELECT COUNT(*) AS total FROM orders", |
| 174 | + "manifest": "sales.txt" |
| 175 | +} |
| 176 | +``` |
| 177 | + |
| 178 | +**Response:** |
| 179 | +```json |
| 180 | +{ |
| 181 | + "columns": ["total"], |
| 182 | + "rows": [[42]], |
| 183 | + "count": 1 |
| 184 | +} |
| 185 | +``` |
| 186 | + |
| 187 | +**Error response:** |
| 188 | +```json |
| 189 | +{ |
| 190 | + "error": "column \"total_ammount\" does not exist" |
| 191 | +} |
| 192 | +``` |
| 193 | + |
| 194 | +--- |
| 195 | + |
| 196 | +## Suggestions |
| 197 | + |
| 198 | +### `POST /suggest` |
| 199 | + |
| 200 | +Generate 3 follow-up question suggestions for a manifest. |
| 201 | + |
| 202 | +**Request:** |
| 203 | +```json |
| 204 | +{ |
| 205 | + "manifest": "sales.txt" |
| 206 | +} |
| 207 | +``` |
| 208 | + |
| 209 | +**Response:** |
| 210 | +```json |
| 211 | +{ |
| 212 | + "questions": [ |
| 213 | + "What is total revenue by month?", |
| 214 | + "Which products drive the most revenue?", |
| 215 | + "Show average order value by customer city" |
| 216 | + ] |
| 217 | +} |
| 218 | +``` |
| 219 | + |
| 220 | +--- |
| 221 | + |
| 222 | +## Session |
| 223 | + |
| 224 | +### `POST /reset` |
| 225 | + |
| 226 | +Clear the current conversation context. |
| 227 | + |
| 228 | +**Request:** empty body or `{}` |
| 229 | + |
| 230 | +**Response:** |
| 231 | +```json |
| 232 | +{ |
| 233 | + "status": "ok" |
| 234 | +} |
| 235 | +``` |
| 236 | + |
| 237 | +--- |
| 238 | + |
| 239 | +## History |
| 240 | + |
| 241 | +### `GET /history` |
| 242 | + |
| 243 | +Retrieve recent query history. |
| 244 | + |
| 245 | +**Query parameters:** |
| 246 | + |
| 247 | +| Parameter | Default | Description | |
| 248 | +|-----------|---------|-------------| |
| 249 | +| `limit` | `20` | Maximum number of entries to return | |
| 250 | + |
| 251 | +**Response:** |
| 252 | +```json |
| 253 | +{ |
| 254 | + "history": [ |
| 255 | + { |
| 256 | + "question": "What is total revenue this month?", |
| 257 | + "sql": "SELECT SUM(total_amount) FROM orders WHERE ...", |
| 258 | + "manifest": "sales.txt", |
| 259 | + "timestamp": "2024-03-15T14:32:01.123456" |
| 260 | + } |
| 261 | + ] |
| 262 | +} |
| 263 | +``` |
| 264 | + |
| 265 | +--- |
| 266 | + |
| 267 | +## Favorites |
| 268 | + |
| 269 | +### `GET /favorites` |
| 270 | + |
| 271 | +List all saved queries. |
| 272 | + |
| 273 | +**Response:** |
| 274 | +```json |
| 275 | +{ |
| 276 | + "favorites": [ |
| 277 | + { |
| 278 | + "name": "Monthly revenue", |
| 279 | + "question": "What is total revenue by month?", |
| 280 | + "sql": "SELECT DATE_TRUNC('month', ...) ...", |
| 281 | + "manifest": "sales.txt", |
| 282 | + "created_at": "2024-03-15T14:32:01.123456" |
| 283 | + } |
| 284 | + ] |
| 285 | +} |
| 286 | +``` |
| 287 | + |
| 288 | +### `POST /favorites` |
| 289 | + |
| 290 | +Save a query as a favorite. |
| 291 | + |
| 292 | +**Request:** |
| 293 | +```json |
| 294 | +{ |
| 295 | + "name": "Monthly revenue", |
| 296 | + "question": "What is total revenue by month?", |
| 297 | + "sql": "SELECT DATE_TRUNC('month', created_at) ...", |
| 298 | + "manifest": "sales.txt" |
| 299 | +} |
| 300 | +``` |
| 301 | + |
| 302 | +**Response:** |
| 303 | +```json |
| 304 | +{ |
| 305 | + "status": "ok" |
| 306 | +} |
| 307 | +``` |
| 308 | + |
| 309 | +### `DELETE /favorites/<name>` |
| 310 | + |
| 311 | +Delete a saved favorite by name. |
| 312 | + |
| 313 | +``` |
| 314 | +DELETE /favorites/Monthly%20revenue |
| 315 | +``` |
| 316 | + |
| 317 | +**Response:** |
| 318 | +```json |
| 319 | +{ |
| 320 | + "status": "ok" |
| 321 | +} |
| 322 | +``` |
| 323 | + |
| 324 | +--- |
| 325 | + |
| 326 | +## Consuming the streaming API |
| 327 | + |
| 328 | +### Python (httpx) |
| 329 | + |
| 330 | +```python |
| 331 | +import httpx |
| 332 | +import json |
| 333 | + |
| 334 | +with httpx.stream("POST", "http://localhost:5000/chat/stream", json={ |
| 335 | + "question": "What is total revenue by month?", |
| 336 | + "manifest": "sales.txt", |
| 337 | + "auto_execute": True, |
| 338 | + "explain": True, |
| 339 | +}) as r: |
| 340 | + for line in r.iter_lines(): |
| 341 | + if line.startswith("data: "): |
| 342 | + event = json.loads(line[6:]) |
| 343 | + if event["type"] == "sql_chunk": |
| 344 | + print(event["content"], end="", flush=True) |
| 345 | + elif event["type"] == "sql_done": |
| 346 | + print(f"\n\nSQL: {event['sql']}") |
| 347 | + elif event["type"] == "results": |
| 348 | + print(f"Results: {event['count']} rows") |
| 349 | + elif event["type"] == "done": |
| 350 | + break |
| 351 | +``` |
| 352 | + |
| 353 | +### curl |
| 354 | + |
| 355 | +```bash |
| 356 | +curl -sN -X POST http://localhost:5000/chat/stream \ |
| 357 | + -H "Content-Type: application/json" \ |
| 358 | + -d '{"question":"total revenue by month","manifest":"sales.txt","auto_execute":true}' |
| 359 | +``` |
| 360 | + |
| 361 | +### JavaScript (browser) |
| 362 | + |
| 363 | +```javascript |
| 364 | +const res = await fetch('/chat/stream', { |
| 365 | + method: 'POST', |
| 366 | + headers: { 'Content-Type': 'application/json' }, |
| 367 | + body: JSON.stringify({ question: 'total revenue by month', manifest: 'sales.txt' }), |
| 368 | +}); |
| 369 | + |
| 370 | +const reader = res.body.getReader(); |
| 371 | +const dec = new TextDecoder(); |
| 372 | +let buf = ''; |
| 373 | + |
| 374 | +while (true) { |
| 375 | + const { done, value } = await reader.read(); |
| 376 | + if (done) break; |
| 377 | + buf += dec.decode(value, { stream: true }); |
| 378 | + for (const line of buf.split('\n')) { |
| 379 | + if (line.startsWith('data: ')) { |
| 380 | + const event = JSON.parse(line.slice(6)); |
| 381 | + if (event.type === 'sql_chunk') process.stdout.write(event.content); |
| 382 | + } |
| 383 | + } |
| 384 | + buf = ''; |
| 385 | +} |
| 386 | +``` |
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