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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.

TDQS

A4.3/5.0
Behavior4/5

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

Annotations already indicate read-only, non-destructive behavior. The description adds valuable context: it walks the order-book ladder, returns specific fields like slippage and verdict, and highlights forced directional risk. No contradictions with annotations.

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

Conciseness3/5

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

The description is comprehensive but quite verbose, packed into one dense paragraph. While it uses bold labels to structure modes, it could be more concise and front-loaded for quick scanning.

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?

With no output schema, the description fully details return values for both modes, including verdicts, capture_ratio, thin_legs, and forced_directional_risk. It covers all expected outputs and explains the rationale, making the tool self-contained.

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% with descriptions for all 4 parameters. The description adds nuance, e.g., 'size_usd' in basket mode is settlement notional, and 'side' default logic. This enriches understanding beyond the schema alone.

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's purpose: checking realizable vs theoretical edge against live order-book depth. It distinguishes two modes (single-market and basket/partition) with specific verbs and resources, differentiating it from siblings like polymarket_arbitrage and polymarket_edges.

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

Usage Guidelines4/5

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

The description explicitly instructs to use this tool before executing polymarket_arbitrage signals or trades above ~$500, and explains the risk of partial basket fills converting arbs into directional positions. While it doesn't list alternatives, the usage context is clear.

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

Only 7 of 38 tools are specific to CWE (weakness, children, parents, etc.), while the rest are generic data query, prediction market, and utility tools. This creates massive overlap and confusion: an agent looking for CWE data will encounter many unrelated tools with similar generic names like ask_pipeworx, deep_research, etc.

Naming Consistency2/5

CWE-specific tools use a consistent noun pattern (weakness, children, parents, etc.), but the remaining tools mix snake_case, camelCase, and no clear pattern (e.g., ask_pipeworx, bet_research, generate_llms_txt). The overall naming is inconsistent.

Tool Count1/5

38 tools is far too many for a CWE server. The vast majority are unrelated to CWE, making the tool surface bloated and unfocused. A concise set of ~5-10 CWE-specific tools would be appropriate.

Completeness3/5

The CWE-specific tools (weakness, category, view, children, parents, descendants, relationship) cover the main use cases for querying the CWE database. However, the server also includes many unrelated tools that dilute its purpose, making it feel incomplete for someone strictly needing CWE data.