{
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  "id": "lending-supply-caps",
  "canonical": "https://degreesofsatoshi.com/encyclopedia/lending-supply-caps/",
  "collection": "defi",
  "title": "Supply caps: limiting deposits into a lending reserve",
  "description": "Understand a lending reserve’s supply cap as a limit on additional deposits and distinguish it from available withdrawal liquidity or a guarantee against loss.",
  "aliases": [],
  "dates": {
    "published": "2026-10-02",
    "modified": "2026-10-02",
    "verified": "2026-10-02T18:15:18.493Z",
    "dataAsOf": "2026-10-02"
  },
  "authorship": {
    "publisher": "Degrees of Satoshi editorial project",
    "process": "AI-assisted research and drafting with a separate automated source-verification pass; no external expert or named human review is implied."
  },
  "quickAnswer": {
    "text": "A supply cap limits how much of an asset may be supplied to a lending reserve under its configured rules. It can restrict growth of exposure to that asset. It does not mean the same amount is idle and withdrawable, and it does not guarantee that existing suppliers cannot lose money.",
    "claimId": "lending-supply-caps-quick-answer",
    "sourceIds": [
      "aave-reserve",
      "aave-pool"
    ]
  },
  "keyFacts": [
    {
      "label": "Scope",
      "value": "Aave reserve caps limit the total amount supplied or borrowed.",
      "sourceIds": [
        "aave-reserve"
      ],
      "id": "scope",
      "claimId": "lending-supply-caps-fact-scope"
    },
    {
      "label": "Configuration",
      "value": "Caps are market-specific and can change through governance.",
      "sourceIds": [
        "aave-reserve"
      ],
      "id": "configuration",
      "claimId": "lending-supply-caps-fact-configuration"
    },
    {
      "label": "Liquidity",
      "value": "Withdrawal availability is a separate condition from the supply cap.",
      "sourceIds": [
        "aave-pool"
      ],
      "id": "liquidity",
      "claimId": "lending-supply-caps-fact-liquidity"
    }
  ],
  "prerequisites": [
    "defi-lending-pools"
  ],
  "sections": [
    {
      "id": "headroom",
      "heading": "Read remaining capacity in the correct units",
      "sourceIds": [
        "aave-reserve"
      ],
      "paragraphs": [
        "If a hypothetical reserve has a cap of 1,000,000 token units and 950,000 counted against it, the simple headroom is 50,000 units. A dashboard’s exact counted amount must follow the deployed implementation.",
        "This is an exposure limit, not a promise that the token is worth one dollar or that every existing unit is immediately available in cash."
      ]
    },
    {
      "id": "deposit",
      "heading": "A valid wallet can still be unable to add supply",
      "sourceIds": [
        "aave-reserve",
        "aave-pool"
      ],
      "paragraphs": [
        "A deposit can fail because the reserve has reached its cap even if the user has enough tokens and allowance. Account authorization and market capacity are separate checks.",
        "The cap may change before the transaction executes. An earlier interface quote is an observation, not a reservation of remaining capacity."
      ]
    },
    {
      "id": "risk",
      "heading": "A cap controls size rather than asset quality",
      "sourceIds": [
        "aave-reserve"
      ],
      "paragraphs": [
        "Limiting supplied exposure can be one risk-management measure. It does not eliminate oracle, collateral, contract or governance risk within the allowed amount.",
        "Compare the cap with the asset’s liquidity and other reserve parameters. A larger cap is a configuration choice, not an independent endorsement."
      ]
    }
  ],
  "faq": [
    {
      "question": "Does reaching a supply cap stop everyone from withdrawing?",
      "answer": "A cap concerns supply capacity. Withdrawals have separate liquidity and collateral conditions; reaching the cap alone is not a statement that withdrawals are unavailable.",
      "sourceIds": [
        "aave-reserve",
        "aave-pool"
      ]
    }
  ],
  "claims": [
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      "id": "lending-supply-caps-quick-answer",
      "articleSlug": "lending-supply-caps",
      "statement": "A supply cap limits how much of an asset may be supplied to a lending reserve under its configured rules. It can restrict growth of exposure to that asset. It does not mean the same amount is idle and withdrawable, and it does not guarantee that existing suppliers cannot lose money.",
      "sourceIds": [
        "source-15989fc372ee02a4",
        "source-b35859a766315ce4"
      ],
      "sourceLocators": [
        {
          "sourceId": "source-15989fc372ee02a4",
          "locator": "Key Reserve Parameters; Dynamic Parameters and Governance"
        },
        {
          "sourceId": "source-b35859a766315ce4",
          "locator": "supply; withdraw; borrow; liquidationCall"
        }
      ],
      "scope": {
        "collection": "defi",
        "dataAsOf": "2026-10-02",
        "blockHeight": null
      },
      "qualification": "",
      "evidenceStatus": "documented",
      "verification": {
        "status": "verified",
        "method": "independent automated source review",
        "checkedAt": "2026-10-02T18:15:18.493Z",
        "reviewer": "automated independent verification — DeFi expansion reviewer",
        "notes": [
          "Read reserve supply/borrow caps and market-specific governance parameters, together with Pool supply and withdrawal conditions.",
          "Recomputed 1000000-950000=50000 illustrative headroom. Article explicitly defers exact accounting to the implementation and distinguishes capacity from withdrawal liquidity or safety."
        ]
      }
    },
    {
      "id": "lending-supply-caps-fact-scope",
      "articleSlug": "lending-supply-caps",
      "statement": "Scope: Aave reserve caps limit the total amount supplied or borrowed.",
      "sourceIds": [
        "source-15989fc372ee02a4"
      ],
      "sourceLocators": [
        {
          "sourceId": "source-15989fc372ee02a4",
          "locator": "Key Reserve Parameters; Dynamic Parameters and Governance"
        }
      ],
      "scope": {
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      "evidenceStatus": "documented",
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        "checkedAt": "2026-10-02T18:15:18.493Z",
        "reviewer": "automated independent verification — DeFi expansion reviewer",
        "notes": [
          "Read reserve supply/borrow caps and market-specific governance parameters, together with Pool supply and withdrawal conditions.",
          "Recomputed 1000000-950000=50000 illustrative headroom. Article explicitly defers exact accounting to the implementation and distinguishes capacity from withdrawal liquidity or safety."
        ]
      }
    },
    {
      "id": "lending-supply-caps-fact-configuration",
      "articleSlug": "lending-supply-caps",
      "statement": "Configuration: Caps are market-specific and can change through governance.",
      "sourceIds": [
        "source-15989fc372ee02a4"
      ],
      "sourceLocators": [
        {
          "sourceId": "source-15989fc372ee02a4",
          "locator": "Key Reserve Parameters; Dynamic Parameters and Governance"
        }
      ],
      "scope": {
        "collection": "defi",
        "dataAsOf": "2026-10-02",
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      "qualification": "",
      "evidenceStatus": "documented",
      "verification": {
        "status": "verified",
        "method": "independent automated source review",
        "checkedAt": "2026-10-02T18:15:18.493Z",
        "reviewer": "automated independent verification — DeFi expansion reviewer",
        "notes": [
          "Read reserve supply/borrow caps and market-specific governance parameters, together with Pool supply and withdrawal conditions.",
          "Recomputed 1000000-950000=50000 illustrative headroom. Article explicitly defers exact accounting to the implementation and distinguishes capacity from withdrawal liquidity or safety."
        ]
      }
    },
    {
      "id": "lending-supply-caps-fact-liquidity",
      "articleSlug": "lending-supply-caps",
      "statement": "Liquidity: Withdrawal availability is a separate condition from the supply cap.",
      "sourceIds": [
        "source-b35859a766315ce4"
      ],
      "sourceLocators": [
        {
          "sourceId": "source-b35859a766315ce4",
          "locator": "supply; withdraw; borrow; liquidationCall"
        }
      ],
      "scope": {
        "collection": "defi",
        "dataAsOf": "2026-10-02",
        "blockHeight": null
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      "qualification": "",
      "evidenceStatus": "documented",
      "verification": {
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        "checkedAt": "2026-10-02T18:15:18.493Z",
        "reviewer": "automated independent verification — DeFi expansion reviewer",
        "notes": [
          "Read reserve supply/borrow caps and market-specific governance parameters, together with Pool supply and withdrawal conditions.",
          "Recomputed 1000000-950000=50000 illustrative headroom. Article explicitly defers exact accounting to the implementation and distinguishes capacity from withdrawal liquidity or safety."
        ]
      }
    }
  ],
  "sources": [
    {
      "id": "aave-reserve",
      "label": "Reserve",
      "publisher": "Aave",
      "url": "https://www.aave.com/docs/aave-v3/concepts/reserve",
      "locator": "Key Reserve Parameters; Dynamic Parameters and Governance",
      "note": "Reserve LTV, liquidation threshold, borrow availability, caps and rate parameters.",
      "version": "Aave V3 documentation",
      "checkedAt": "2026-10-02T17:03:44.647Z",
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    {
      "id": "aave-pool",
      "label": "Pool",
      "publisher": "Aave",
      "url": "https://aave.com/docs/aave-v3/smart-contracts/pool",
      "locator": "supply; withdraw; borrow; liquidationCall",
      "note": "Collateralization, available liquidity and liquidation operations.",
      "version": "Aave V3 documentation",
      "checkedAt": "2026-10-02T17:03:44.834Z",
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  ],
  "related": {
    "articles": [
      "borrow-caps",
      "defi-isolated-lending-markets",
      "aave-atokens"
    ],
    "dossiers": [],
    "wallets": []
  },
  "revisionHistory": [
    {
      "date": "2026-10-02",
      "kind": "published",
      "summary": "First publication after primary-source research and independent automated verification."
    }
  ],
  "citation": "Degrees of Satoshi editorial project. “Supply caps: limiting deposits into a lending reserve.” Published 2026-10-02; updated 2026-10-02. https://degreesofsatoshi.com/encyclopedia/lending-supply-caps/"
}