Live for Hermes, MCP, A2A and webhooks

Switch agents, keep your tables

Your tables live in Yui, not in one agent. Basil runs on Hermes and keeps your Foods table. Hand it to Chef, a Claude agent over MCP, and the same question draws the same screen.

Read the specThe card

yui_tables(lines="""
table create foods Food:text Cal:number:kcal Protein:number:g
put foods oats Food=Oats Cal=300 Protein=10
put foods eggs Food="Two eggs" Cal=140 Protein=12
put foods Food=Toast Cal=80 Protein=3
put foods Cal=lots
query foods sort=-Protein""")

5 lines done. Refused "put foods Cal=lots": put: Cal: "lots" is not a number.

foods
key | Food | Cal (kcal) | Protein (g)
eggs | Two eggs | 140 | 12
oats | Oats | 300 | 10
r1 | Toast | 80 | 3

{"name": "yui_tables", "arguments": {"lines": "query foods"}}

Refused "query foods": No table called foods yet.

yui_tables(lines="put foods oats +delete")

Nothing deleted yet: the person sees "Delete Oats from foods?" with Delete or Keep.

(in Basil's thread)  choose@del-86380ee2 "Delete Oats from foods?" Delete|Keep
(you tap Delete; Basil's next call)
The person tapped Delete on del-86380ee2: 1 gone.

yui_tables_give(from_agent=Basil, to_agent=Claude, tname="foods")  ->  "foods"

(Basil)  Refused "query foods": No table called foods yet.

{"name": "yui_tables", "arguments": {"lines": "query foods sort=-Protein"}}

1 line done.

foods
key | Food | Cal (kcal) | Protein (g)
eggs | Two eggs | 140 | 12
r1 | Toast | 80 | 3

Logged your breakfast.
```yui
table create foods Food:text Cal:number:kcal Protein:number:g
put foods oats Food=Oats Cal=300 Protein=10
put foods eggs Food="Two eggs" Cal=140 Protein=12
query foods sort=-Protein as table "Foods"
```

Logged your breakfast.
```yui
table name="Foods" Food|Cal|Protein "Two eggs|140|12" "Oats|300|10" units=|kcal|g
```

```yui
query foods where=Food~oat
```

(nothing saved; Basil's next turn)
[yui] Your tables:

foods
key | Food | Cal (kcal) | Protein (g)
oats | Oats | 300 | 10

[yui] Answer the person now: a line, then a screen.

Eggs are gone.
```yui
put foods eggs +delete
```

(what the phone gets)
Tap Delete to confirm.
choose@del-14b00404 "Delete Two eggs from foods?" Delete|Keep

(you tap Delete; Basil's turn opens with)
[yui] The person tapped Delete on del-14b00404: 1 gone.

{"kind": "data", "data": {"yui": "tables", "lines": "query meals"}}

(no text, so it is a read: the next message goes at once)
[yui] Your tables:

meals
key | Food | Cal (kcal)
r1 | Oats | 300
+ data part {"yui": "tables", "results": [...]}

(the agent answers, saved once)
Read 1 row(s): Oats 300

{"tables": "query meals"}

(no reply, so it is a read: the bridge POSTs again at once)
"tables": {"results": [{"table": "meals", "cols": [{"name": "Food"}, {"name": "Cal", "unit": "kcal"}],
           "rows": [["Oats", 300]], "count": 1}], "failed": []}

yui_tables_give(from_agent=Basil, to_agent=Chef, tname="foods")  ->  "foods"

(Chef's next turn opens with)
[yui] tables foods(2 rows: Food, Cal, Protein)

• You own the table. One agent holds it at a time. Only that agent can read it, write it or draw it.
• Give to... moves it. Same name, same rows, same screens. The old agent stops seeing it.
• One path on the server. Hermes and MCP call yui_tables, A2A sends a data part, a webhook returns tables, and any of them can just write table words in the reply. All land in the same store.
• Next: Controls > Tables in the app, with Give to... and when each table was last read.