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Glama

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. First observed

TDQS

A4.7/5.0
Behavior4/5

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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and no destructiveness. The description adds specifics: walks the order-book ladder, returns fields like top_of_book, vwap_fill_price, slippage_pp, and warns about forced directional risk. This expands on the annotation safety profile.

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 verbose but well-organized with clear section headers for SINGLE-MARKET and BASKET modes. Every sentence adds value, but some redundancy (e.g., parameter defaults repeated) could be trimmed. Still effective.

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?

Despite no output schema, the description thoroughly documents return values for both modes, including edge cases (thin_legs, forced_directional_risk, max_clean_notional_usd). It covers the full complexity of the tool's two operational modes.

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

Parameters5/5

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

Schema coverage is 100%, but description adds crucial context: explains the meaning of side defaults (auto for basket), different interpretation of size_usd per mode (spend vs target proceeds vs settlement notional), and parameter interplay (market vs event exclusive). This goes well beyond schema 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 specifies the tool's purpose as a realizable-vs-theoretical edge check against live CLOB depth. It clearly distinguishes single-market and basket modes, and explicitly contrasts with sibling tools 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 Guidelines5/5

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

The description states exactly when to use the tool: before acting on polymarket_arbitrage signals or polymarket_edges trades above $500. It explains the risks (uncapturable overround, unnhedged positions) and provides mode selection guidance via REQUIRES one of market or event.

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

A3.7/5.0
Disambiguation4/5

Most tools have distinct purposes, but ask_pipeworx, ask_pipeworx_beta, and ask_pipeworx_grounded are very similar, causing potential confusion. The memory tools (remember/recall/forget) are separate, but the overall set is diverse enough that agents can typically distinguish them.

Naming Consistency2/5

Tool names use a mix of camelCase (ask_pipeworx, entity_profile, generate_llms_txt) and snake_case (http_status, list_http_statuses, list_subscriptions), with no consistent verb_noun pattern. Some names are descriptive, but the lack of a unified convention hurts predictability.

Tool Count2/5

33 tools is high for a server named 'Httpstatus' that only has two HTTP-related tools. The large number spans data retrieval, memory, subscriptions, prediction markets, and more, making the server feel bloated and unfocused.

Completeness3/5

The server covers many domains but each is incomplete. HTTP status has lookup and list but no lifecycle. Memory tools are basic. Data retrieval is extensive but not exhaustive for any single domain. It's a broad but shallow collection.