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abstract_toolserver

The abstract_* ecosystem exposed as an API-callable AI toolset — every tool is a plain Python function turned into a self-describing HTTP endpoint by abstract_flask. A portable tool layer any model (Claude, hugpy, …) can drive over HTTP instead of being bound to one runtime's tool harness.

Run it

pip install abstract_toolserver          # + the extras you want to expose
python -m abstract_toolserver            # HOST/PORT/DEBUG from TOOLSERVER_* env
from abstract_toolserver import get_toolserver_app
app = get_toolserver_app()               # a normal Flask/WSGI app

Self-describing surface

The app auto-mounts introspection endpoints (from abstract_flask):

Endpoint What it gives an LLM
GET /prefixes the tool categories (/fs, /db, /ui, …)
GET /endpoints every tool as {endpoint, url, methods}
GET /<cat>/<tool>?help=true that tool's signature/help

Call a tool with JSON; unknown keys are pruned to the function signature, and the reply is {"result": ...} (or {"error": ...}). Discover-and-dispatch from a client is already provided by abstract_apis.make_endpoint_call.

curl -s localhost:5000/fs/count_tokens -d '{"text":"hello world"}'
# {"result": 2}
curl -s localhost:5000/db/schema           # {"result": {table: [cols...]}}
curl -s 'localhost:5000/db/query?help=true'

Tool categories

Prefix Tools Backend
/fs search, read_span, extract, read_file, write_file, read_json, find_keys, find_paths, glob, imports, find_content abstract_search, abstract_utilities, abstract_paths
/text count_tokens, chunk, detect_language abstract_utilities
/web text, links, attributes abstract_webtools
/media ocr_image, pdf_text, summarize, keywords, transcribe abstract_ocr, abstract_pandas, media_intelligence
/ai query abstract_ai
/db tables, schema, columns, fetch, query abstract_database
/sys run_cmd stdlib (gated)
/ui capture, monitors, ocr, windows, click_verify abstract_clicks, abstract_windows
/loci list, pointers (the hugpy-station distribution feed), register, archive central locus registry (Postgres)
/handoff request, list, claim, station (seat-API probe) jump-in seats via hugpy-station
/session identity, pull, spin, list, release pull a live Claude Code session into a hugpy-station seat

Safety gates

Backends load lazily, so the server boots on a headless box and a missing backend errors only when its tool is called. Beyond that:

  • /db/query — read-only gate: rejects anything that isn't a single SELECT/WITH, blocks stacked statements and data-modifying keywords. Use /db/fetch (identifier-composed, params-not-SQL) as the default read path.
  • /sys/run_cmd — disabled unless TOOLSERVER_CMD_ALLOWLIST=ls,grep,… is set; only allowlisted binaries run.
  • /fs/read_file · /fs/write_file — local-only; the underlying SSH/remote kwargs are never exposed at the boundary.
  • /session/pull — the agent's own MCP bridge (abstract-claude mcp) fills the calling session's identity (session id, user@host, cwd); the toolserver registers machine + session loci, records a pull handoff, and asks the station (HANDOFF_SPAWN_URL) to seat claude --resume <id> --fork-session there. Without a resume-capable station it stays pending (/session/spin retries) — never a silent fresh seat. A pulled session carries its OWN name in the station (name= → tmux seat and session locus; default sess-<id8>).
  • default loci — the station service user (vm_mgr) and the host are always in the /loci/pointers distribution: seeded once into the registry, re-merged into the feed even before the table exists (TOOLSERVER_DEFAULT_LOCI, TOOLSERVER_STATION_USER).
  • /ui/click_verify — the click→observe→verify loop: locate (text or image template) → click → re-capture → report whether the screen (or a region) changed. The half most tool APIs lack.

Configuration

Env var Purpose
TOOLSERVER_HOST / TOOLSERVER_PORT / TOOLSERVER_DEBUG bind + debug
TOOLSERVER_CMD_ALLOWLIST comma-separated binaries /sys/run_cmd may run
SOLCATCHER_POSTGRESQL_* DB connection (via abstract_database)
HANDOFF_SPAWN_URL / HANDOFF_SPAWN_TOKEN hugpy-station seat API (/api/handoff/spawn) + its X-Console-Token
TOOLSERVER_DEFAULT_LOCI name=user@host[:port][|goal],… — loci every station inherits (default: vm_mgr + this login on this host)
TOOLSERVER_STATION_USER station service user for the fallback default locus (default vm_mgr)

Metadata

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