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Opencellid

by io.github.pipeworx-io

Polymarket Fill Risk

polymarket_fill_risk
Read-onlyIdempotent

Realizable-vs-theoretical edge check against live CLOB order-book depth. REQUIRES one of market (single-market mode) or event (basket/partition mode). SINGLE-MARKET: pass a market slug/URL + side (buy_yes|sell_yes|buy_no|sell_no, default buy_yes) + size_usd (default 1000 — max spend on buys, target proceeds on sells); walks the ladder and returns top_of_book, vwap_fill_price, slippage_pp, shares_filled, max_fillable_usd, and a verdict (clean|degraded|cannot_fill). BASKET: pass an event slug/URL + side (sell_yes = capture overround by selling every leg, buy_yes = capture underround; default auto from partition sum) + size_usd interpreted as settlement notional S (shares per leg; each share pays $1); returns theoretical_sum vs realizable_sum (top-of-book vs VWAP across all legs), capture_ratio, profit_usd at executed size, per-leg fill detail, thin_legs[], max_clean_notional_usd, and forced_directional_risk naming the legs most likely to strand you unhedged. USE THIS before acting on any polymarket_arbitrage SELL/BUY-EVERY-LEG signal or any polymarket_edges trade above ~$500 — theoretical overround on thin books is not capturable, and partial basket fills convert an arb into an unhedged directional position (the dominant loss mode in real arb-bot P&L).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sideNoSingle-market: buy_yes | sell_yes | buy_no | sell_no (default buy_yes). Basket: sell_yes | buy_yes (default auto — sell if partition sum > 1, buy if < 1).
eventNoBasket mode: event slug or full polymarket.com URL — checks every leg of the partition.
marketNoSingle-market mode: market slug or full polymarket.com URL.
size_usdNoSingle-market: USD to spend (buys) or target proceeds (sells). Basket: settlement notional — shares per leg, each paying $1 at resolution. Default 1000, clamp 10–1,000,000.

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. Added
  2. Removed
  3. Added

TDQS

A4.8/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and non-destructive. The description adds substantial behavioral detail: it walks the order book ladder, returns verdicts (clean/degraded/cannot_fill), and for basket mode reveals forced_directional_risk and the danger of partial fills. This is valuable context beyond the annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured with clear sections for REQUIRES, SINGLE-MARKET, and BASKET modes. It is lengthy (~300 words) but every sentence adds value. Minor conciseness could be achieved by further splitting, but overall it balances detail with clarity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has no output schema and handles two complex modes, the description is remarkably complete. It lists all return fields (top_of_book, vwap_fill_price, slippage_pp, etc.) and explains risks (thin legs, forced directional risk). It covers edge cases like partial basket fills and maximum safe notional.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3. The description enhances understanding by explaining how size_usd is interpreted differently (spend vs target proceeds, settlement notional) and how side defaults are determined in basket mode. This adds meaning but the schema already provides basic descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool performs a 'realizable-vs-theoretical edge check against live CLOB order-book depth' and specifies two modes (single-market and basket). It distinguishes itself from sibling tools like polymarket_arbitrage and polymarket_edges by explicitly recommending its use before acting on their signals.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit guidance on when to use this tool: 'USE THIS before acting on any polymarket_arbitrage SELL/BUY-EVERY-LEG signal or any polymarket_edges trade above ~$500'. It also explains why alternative tools or actions may fail due to thin books and partial basket fills converting arb into directional positions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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TDQS

A3.6/5.0
Disambiguation2/5

Several tools are near-indistinguishable by role: ask_pipeworx and ask_pipeworx_beta are documented as currently identical, and ask_pipeworx, ask_pipeworx_grounded, and deep_research overlap as lookup/research entry points. The six-tool Polymarket cluster and the suggest_questions/discover_tools pair add further boundary confusion despite very long descriptions.

Naming Consistency3/5

Snake_case is used consistently, and clusters like ask_pipeworx_* and polymarket_* have internal consistency. However, the global convention is mixed: verb_object names (get_cell, resolve_entity, unsubscribe) sit beside noun phrases (entity_profile, recent_changes, cells_in_area) and product-prefixed nouns (pipeworx_feedback, polymarket_edges), so tool names are not predictable from function.

Tool Count2/5

33 tools is too many for a server named Opencellid, especially since only get_cell and cells_in_area actually belong to the cell-tower domain. Even as a broader Pipeworx/data bundle, the set is heavy and includes unrelated one-offs like generate_llms_txt and scan_dependency.

Completeness2/5

For an OpenCellID server, the surface is just two lookups, missing coverage stats, operator-based search, and other natural cell-tower operations. If judged instead as a Pipeworx data-research suite, coverage is broad, but the lack of a coherent stated domain makes obvious gaps and dead ends harder to identify.

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